CN108344528A - A kind of multi-connected air conditioning system heat exchange measuring method and device - Google Patents

A kind of multi-connected air conditioning system heat exchange measuring method and device Download PDF

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CN108344528A
CN108344528A CN201810077165.7A CN201810077165A CN108344528A CN 108344528 A CN108344528 A CN 108344528A CN 201810077165 A CN201810077165 A CN 201810077165A CN 108344528 A CN108344528 A CN 108344528A
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mixture
enthalpy
outlet
indicate
mass flow
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CN108344528B (en
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石文星
张国辉
丁连锐
王宝龙
李先庭
于洋
李子爱
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Tsinghua University
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Tsinghua University
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device

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Abstract

The present invention provides a kind of multi-connected air conditioning system heat exchange measuring methods and device, this method to include：According to the principle of the conservation of energy of each component in disengaging multi-connected air conditioning system, obtain the 5th mass flow of the mixture of the refrigerant and lubricating oil composition at the second outlet of four-way valve, obtain the 11st enthalpy that mixture is exported in the major loop of recooler, fiveth enthalpy of the acquisition mixture in the second outlet of four-way valve, according to the 5th mass flow, the 5th enthalpy, the 11st enthalpy, the refrigerating capacity of multi-connected air conditioning system is obtained；And/or it obtains mixture and the heating capacity of multi-connected air conditioning system is obtained according to the 5th mass flow, the 8th enthalpy, the 11st enthalpy in the 8th enthalpy of the second outlet of oil eliminator.Through the invention, solve the problems, such as that the heat exchange measurements in the prior art to multi-connected air conditioning system are inaccurate.

Description

A kind of multi-connected air conditioning system heat exchange measuring method and device
Technical field
The present invention relates to Refrigeration ＆ Air-Conditioning equipment technical fields, and in particular to a kind of multi-connected air conditioning system heat exchange measurement Method and device.
Background technology
Multi-connected air conditioning system in actual use, due to weather conditions, installation site, service condition and load item The influence of the factors such as part, live runnability with to test indoor test performance gap larger, therefore, actual measurement multiple air conditioner The actual performance of adjusting system in use is always urgent problem to be solved in industry.Currently, the in-site measurement of power consumption Technical comparing is ripe, but (heat) amount of freezing then can not be measured accurately, therefore is difficult to analyze the actual performance of multi-connected air conditioning system, It is unfavorable for the optimization operation and management of multi-connected air conditioning system.
In the prior art, for multi-connected air conditioning system on-site performance, mainly start with from the outside of refrigeration cycle, Room air enthalpy potential method and outdoor air enthalpy potential method is used to measure, i.e., by measurement be tested heat exchanger intake (or Exhaust air rate), air inlet (or air draft) humiture, calculate the heat exchange amount of air and refrigerant；Measure refrigeration heat pump system simultaneously Compressor power consumption, and then calculate refrigeration heat pump system refrigeration (heat) amount and refrigeration (heat) Energy Efficiency Ratio.Using above-mentioned When two methods, since because air flow field is unevenly distributed, therefore its air quantity can not be measured accurately under the conditions of at the scene；If using Outer wind channel mode measures, and the operating status that will influence refrigeration heat pump system, causes test result that cannot reflect reality The problem of situation.When using outdoor air enthalpy potential method, especially when there is outer wind disturbance, the refrigeration (heat) of refrigeration heat pump system The measurement error of amount is very big；When using room air enthalpy potential method, not only air quantity can not be measured accurately, but also influence indoor occupant Work, especially under conditions of multiple indoor unit ends, these problems make the prior art be difficult to meet engineering test It is required that.
Thus, start with from multi-connected air conditioning system unit refrigerant side, measure the flow and state parameter of refrigerant, calculates Going out refrigeration (heat) amount of multi-connected air conditioning system becomes a kind of preferable technical solution.But under the field condition of engineering, Using inserting-type flowmeter, i.e., incoming stream gauge must then destroy refrigeration to measure the flow of refrigerant on refrigerant tubing Agent pipeline, the reliability for influencing multi-connected air conditioning system even damage multi-connected air conditioning system, thus do not have can be real for this method Shi Xing.
In order to solve the above-mentioned technical problem, Chinese patent literature CN202442818U discloses a kind of at construction project scene High-precision multi-connected air conditioner (heat pump) unit that the refrigerating capacity of multiple air-conditioning (heat pump) unit indoor unit is accurately measured Indoor unit refrigerating capacity on-spot tester is docked detector with tested indoor unit, it is to be ensured that by adjusting lifting gear without leakage Indoor unit outlet air is directly led back to return air inlet by wind, deflector after equal stream trellis, and warming and humidifying component carries out heating to outlet air and adds It is wet, so that the air condition at return air inlet is reached the state of requirement, it is then defeated for balancing refrigerating capacity and moisture removal institute by measuring The heat that enters and water determine the refrigerating capacity of multi-connected air conditioner (heat pump) unit indoor unit, not due to the distribution of live air flow field Uniformly, this method can not really reflect actual conditions, therefore cause the refrigerating capacity definitive result of multi-connected air conditioning system inaccurate Really.
Invention content
In view of this, the present invention provides a kind of multi-connected air conditioning system heat exchange measuring method and device, it is existing to solve There is the problem of the heat exchange measurements inaccuracy in technology to multi-connected air conditioning system.
According in a first aspect, an embodiment of the present invention provides a kind of multi-connected air conditioning system exchange heat measuring method, it is described The entrance of the exhaust outlet connection oil eliminator of the compressor of multi-connected air conditioning system, the first outlet of the oil eliminator connect institute State the air entry of compressor, the second outlet of the oil eliminator is by connecting the entrance of four-way valve, and the first of the four-way valve The entrance of outlet connection outdoor heat exchanger, the entrance of the outlet connection recooler of outdoor heat exchanger, the first of gas-liquid separator enters Mouth connects the bypass circulation outlet of the recooler, and second entrance connects the second outlet of the four-way valve, the gas-liquid separation The outlet of device connects the entrance of the compressor, the major loop outlet connection indoor heat exchanger of the recooler, the multiple Air-conditioning system heat exchange measuring method include：According to the original for passing in and out the conservation of energy of each component in the multi-connected air conditioning system Reason obtains the 5th mass flow of the mixture of the refrigerant and lubricating oil composition at the second outlet of the four-way valve；It obtains The 11st enthalpy that the mixture is exported in the major loop of recooler；Obtain the mixture four-way valve second outlet 5th enthalpy obtains the multi-connected air conditioner according to the 5th mass flow, the 5th enthalpy, the 11st enthalpy The refrigerating capacity of system；And/or obtain the mixture the second outlet of oil eliminator the 8th enthalpy, according to the described 5th Mass flow, the 8th enthalpy, the 11st enthalpy, obtain the heating capacity of the multi-connected air conditioning system.
Through the above steps, it according to the principle of the conservation of energy of each component in disengaging multi-connected air conditioning system, obtains first The mass flow of the mixture for the outlet that four-way valve is connect with gas-liquid separator, then obtain mixture recooler major loop The enthalpy and mixture of outlet obtain multiple in the enthalpy for the outlet that four-way valve is connect with gas-liquid separator according to above-mentioned parameter The refrigerating capacity of air-conditioning system, and/or, the enthalpy for the entrance that mixture is connect in oil eliminator with four-way valve is obtained, according to above Parameter obtains the heating capacity of multi-connected air conditioning system, and refrigerating capacity and/or the heating of multi-connected air conditioning system are obtained by the process Amount makes its result of calculation more can be accurate due to directly acquiring the enthalpy of each module outlet or inlet and the mass flow of mixture The really heat exchange amount of reflection system, solves and calculates heating capacity or refrigerating capacity using air quantity is measured in the prior art, due to existing Because air flow field is unevenly distributed under field condition, therefore its air quantity can not be measured accurately；If surveyed using outer wind channel mode The problem of measuring, and the operating status that refrigeration heat pump system will be influenced, causing test result that cannot reflect actual conditions.
With reference to first aspect, in first aspect first embodiment of the embodiment of the present invention, it is calculated by the following formula institute State the refrigerating capacity of multi-connected air conditioning system：Qe=G5(h5-h11), wherein QeIndicate the refrigerating capacity of the multi-connected air conditioning system, Unit is kW, G5Indicate the 5th mass flow of the mixture at the second outlet of the four-way valve, unit kg/s, h5 Indicate the mixture the second outlet of four-way valve the 5th enthalpy, h11Indicate that the mixture goes out in the major loop of recooler 11st enthalpy of mouth, unit kJ/kg.
First embodiment with reference to first aspect is described more in first aspect second embodiment of the embodiment of the present invention Connection formula air-conditioning system further includes：Compressor oil return capillary, the entrance of the compressor oil return capillary and the of oil eliminator One outlet connection, the outlet of the compressor oil return capillary is connect with the air inlet of the compressor；Electromagnetic valve outlet oil return The entrance of capillary, the electromagnetic valve outlet oil return capillary is connect with the entrance of the four-way valve, and the four-way valve outlet returns The outlet of oily capillary is connect with the second outlet of the four-way valve, each group in the multi-connected air conditioning system according to disengaging The principle of the conservation of energy of part obtains the of the mixture of refrigerant at the second outlet of the four-way valve and lubricating oil composition Five mass flows, including：Obtain the power, leaking heat, the mixture of the compressor compressor air entry first The second enthalpy, the mixture of enthalpy, the mixture in the outlet of compressor oil return capillary go out gas-liquid separator Mouthful third enthalpy, the mixture in the 4th enthalpy of the outlet of electromagnetic valve outlet oil return capillary, the mixture in gas It is the 7th enthalpy that 6th enthalpy of the second entrance of liquid/gas separator, the mixture are exported in the bypass circulation of recooler, described Eightth enthalpy of the mixture in exhaust outlet of compressor；The mixture is in the 9th enthalpy of outdoor heat exchanger import, the mixing The 11st enthalpy that object is exported in the tenth enthalpy, the mixture of recooler import in the major loop of recooler；According to described Power, leaking heat, first enthalpy and the 8th enthalpy of compressor, obtain the mixing of the compressor air suction mouth The first mass flow of object；According to the first mass flow of the mixture, first enthalpy, second enthalpy, described Three enthalpies, the 4th enthalpy, the 5th enthalpy, the 6th enthalpy, the 7th enthalpy, the 8th enthalpy, obtain 5th mass flow of the mixture at the second outlet of the four-way valve.Through the above steps, refrigerant and profit are obtained Each enthalpy of the mixture of lubricating oil composition in multi-connected air conditioning system at the import or export of each component, then keeps according to energy Permanent principle obtains the mass flow of the mixture at the second outlet of four-way valve, exists since the process synthesis considers mixture The energy variation of the various components of multi-connected air conditioning system, so that measurement result is more accurate.
Second embodiment with reference to first aspect, in first aspect third embodiment of the embodiment of the present invention, by with Lower formula calculates the first mass flow of the mixture of the compressor air suction mouth：Pe+G1h1=Qloss+G1h8, wherein PeTable Show the power of the compressor, unit kW, G1Indicate the first mass flow of the mixture of the compressor air suction mouth, it is single Position is kg/s, h1Indicate the mixture in the first enthalpy of the air entry of compressor, unit kJ/kg, QlossIndicate the pressure The leaking heat of contracting machine, unit kW, h8Indicate the mixture in the 8th enthalpy of exhaust outlet of compressor, unit kJ/kg；It is logical Cross the 5th mass flow of the mixture that following formula calculates at the second outlet of the four-way valve：
Wherein, h2Indicate the mixture in the second enthalpy of the outlet of compressor oil return capillary, h3Indicate the mixing Object is in the third enthalpy of the outlet of gas-liquid separator, h4Indicate the mixture in the outlet of electromagnetic valve outlet oil return capillary 4th enthalpy, h5Indicate the mixture in the 5th enthalpy of the second outlet of four-way valve, h6Indicate the mixture in gas-liquid point 6th enthalpy of the second entrance from device, h7Indicate the 7th enthalpy that the mixture is exported in the bypass circulation of recooler, on The unit for stating enthalpy is kJ/kg, G2Indicate the second mass of mixture described in the exit of the compressor oil return capillary Flow, G3Indicate that the gas-liquid separator exports the third mass flow of the mixture, G4Indicate the electromagnetic valve outlet oil return 4th mass flow of mixture described in the exit of capillary, G5Indicate the mixture at the second outlet of the four-way valve The 5th mass flow, G6Indicate the 6th mass flow of the mixture at the second entrance of the gas-liquid separator, G7It indicates 7th mass flow of mixture described in the bypass circulation exit of the recooler, the unit of above-mentioned mass flow is kg/ s。
First embodiment with reference to first aspect is described more in the 4th embodiment of first aspect of the embodiment of the present invention Connection formula air-conditioning system further includes：Electromagnetic valve outlet oil return capillary, the entrance of the electromagnetic valve outlet oil return capillary with it is described The entrance of four-way valve connects, and the outlet of the four-way valve outlet oil return capillary is connect with the second outlet of the four-way valve, institute It states according to the principle for passing in and out the conservation of energy of each component in the multi-connected air conditioning system, obtains the second outlet of the four-way valve 5th mass flow of the mixture of refrigerant and the lubricating oil composition at place, including：Obtain power, the leakage heat of the compressor Third enthalpy, the mixture that amount, the mixture are exported in gas-liquid separator go out electromagnetic valve outlet oil return capillary Mouthful the 4th enthalpy, the mixture in the 6th enthalpy of the second entrance of gas-liquid separator, the mixture in recooler Bypass circulation outlet the 7th enthalpy, the mixture the exhaust outlet of compressor the 8th enthalpy；The mixture is in outdoor 9th enthalpy of the import of heat exchanger, the mixture are in the tenth enthalpy of the import of recooler, the mixture in recooler Major loop outlet the 11st enthalpy；According to the power of the compressor, leaking heat, the third enthalpy and the 8th enthalpy Value, obtains the third mass flow of the mixture in the exit of the gas-liquid separator；According to the third mass flow, The third enthalpy, the 4th enthalpy, the 5th enthalpy, the 6th enthalpy, the 7th enthalpy, obtain the four-way 5th mass flow of the mixture at the second outlet of valve.By the above process, by obtaining multi-connected air conditioning system The enthalpy of mixture at the import or export of middle difference component, then by passing in and out the principle of the conservation of energy of each component, energy Reach the mass flow for more accurately obtaining mixture in the outlet that four-way valve is connect with gas-liquid separator.
4th embodiment with reference to first aspect passes through following formula in the 5th embodiment of first aspect present invention Calculate the third mass flow of the mixture in the exit of the gas-liquid separator：Pe+G3h3=Qloss+G3h8, wherein Pe Indicate the power of the compressor, unit kW, G3Indicate the third of the mixture in the exit of the gas-liquid separator Mass flow, unit kg/s, h3The mixture is indicated in the third enthalpy of the outlet of gas-liquid separator, unit kJ/kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate the mixture the exhaust outlet of compressor the 8th enthalpy Value, unit kJ/kg；It is calculated by the following formula the 5th quality stream of the mixture at the second outlet of the four-way valve Amount：
Wherein, h3Indicate the mixture in the third enthalpy of the outlet of gas-liquid separator, h4Indicate the mixture in electricity Magnet valve exports the 4th enthalpy of the outlet of oil return capillary, h5Indicate the mixture the second outlet of four-way valve the 5th enthalpy Value, h6Indicate the mixture in the 6th enthalpy of the second entrance of gas-liquid separator, h7Indicate the mixture in recooler 7th enthalpy of bypass circulation outlet, the unit of above-mentioned enthalpy is kJ/kg, G3Indicate the outlet place of the gas-liquid separator State the third mass flow of mixture, G4Indicate the 4th of mixture described in the exit of the electromagnetic valve outlet oil return capillary Mass flow, G5Indicate the 5th mass flow of the mixture at the second outlet of the four-way valve, G6Indicate the gas-liquid point The 6th mass flow from the mixture at the second entrance of device, G7It indicates described in the bypass circulation exit of the recooler The unit of 7th mass flow of mixture, above-mentioned mass flow is kg/s.
First embodiment with reference to first aspect, in first aspect sixth embodiment of the embodiment of the present invention, described According to the principle for passing in and out the conservation of energy of each component in the multi-connected air conditioning system, obtain at the second outlet of the four-way valve 5th mass flow of the mixture of refrigerant and lubricating oil composition, including：Obtain the power, leaking heat, institute of the compressor State that the 7th enthalpy that mixture exports in the bypass circulation of recooler, the mixture is in the tenth enthalpy of recooler import, institute State the 11st enthalpy that mixture is exported in the major loop of recooler；According to the power of the compressor, leaking heat, the described 5th Enthalpy, the 7th enthalpy, the tenth enthalpy, the 11st enthalpy, obtain the institute at the second outlet of the four-way valve State the 5th mass flow of mixture.
Sixth embodiment with reference to first aspect, in the 7th embodiment of first aspect of the embodiment of the present invention, by with Lower formula calculates the 5th mass flow of the mixture at the second outlet of the four-way valve：
Wherein, PeIndicate the power of the compressor, unit kW, G5Indicate the system at the second outlet of the four-way valve 5th mass flow of the mixture of cryogen and lubricating oil composition, unit kg/s, h5Indicate the mixture in four-way valve 5th enthalpy of second outlet, unit kJ/kg, G7Indicate of mixture described in the bypass circulation exit of the recooler Seven mass flows, unit kg/s, h7Indicate that the 7th enthalpy that the mixture is exported in the bypass circulation of recooler, unit are KJ/kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate the mixture the 8th of exhaust outlet of compressor Enthalpy, unit kJ/kg, h10Indicate the mixture in the tenth enthalpy of recooler import, unit kJ/kg, h11Indicate institute State the 11st enthalpy that mixture is exported in the major loop of recooler, unit kJ/kg.
With reference to first aspect, it in the 8th embodiment of first aspect of the embodiment of the present invention, is calculated by the following formula described The heating capacity of multi-connected air conditioning system：Qc=G5(h8-h11), wherein QcIndicate the heating capacity of the multi-connected air conditioning system, it is single Position is kW, G5Indicate the 5th mass flow of the mixture at the second outlet of the four-way valve, unit kg/s, h8Table Show the mixture in the 8th enthalpy of the second outlet of oil eliminator, unit kJ/kg, h11Indicate the mixture cold again 11st enthalpy of the major loop outlet of device, unit kJ/kg.
8th embodiment with reference to first aspect, in the 9th embodiment of first aspect of the embodiment of the present invention, when described When recooler is closed, the 5th mass flow of the mixture is obtained by following steps：Obtain power, the leakage of the compressor Heat, the mixture the second outlet of four-way valve the 5th enthalpy；According to the power of the compressor, leaking heat, described 5th enthalpy, the 8th enthalpy obtain the 5th mass flow of the mixture at the second outlet of the four-way valve.
9th embodiment with reference to first aspect, in the tenth embodiment of first aspect of the embodiment of the present invention, by with Lower formula calculates the 5th mass flow of the mixture in the four-way valve exit：Pe+G5h5=Qloss+G5h8, wherein Pe Indicate the power of the compressor, unit kW, G5Indicate the refrigerant at the second outlet of the four-way valve and lubricating oil group At mixture the 5th mass flow, unit kg/s, h5Indicate the mixture four-way valve second outlet the 5th Enthalpy, unit kJ/kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate that the mixture is detached in oil 8th enthalpy of the second outlet of device, unit kJ/kg.
8th embodiment with reference to first aspect in the 11st embodiment of first aspect of the embodiment of the present invention, works as institute When stating recooler unlatching, the 5th mass flow of the mixture obtains as follows：Obtain the compressor power, The third enthalpy that leaking heat, the mixture are exported in gas-liquid separator；According to the power of the compressor, leaking heat, described Third enthalpy, the 8th enthalpy, obtain the third mass flow of the mixture in the exit of the gas-liquid separator；It obtains The 7th enthalpy for taking the mixture to be exported in the bypass circulation of recooler；According to the third mass flow, the third enthalpy Value, the 5th enthalpy, the 7th enthalpy, obtain the 5th mass of the mixture at the second outlet of the four-way valve Flow.
11st embodiment with reference to first aspect, in the 12nd embodiment of first aspect of the embodiment of the present invention, It is calculated by the following formula the third mass flow of the mixture：Pe+G3h3=Qloss+G3h8, wherein PeIndicate the compression The power of machine, unit kW, G3Indicate that the gas-liquid separator exports the third mass flow of the mixture, unit kg/ S, h3Indicate the third enthalpy that the mixture is exported in gas-liquid separator, unit kJ/kg, QlossIndicate the compressor Leaking heat, unit kW, h8Indicate the mixture in the 8th enthalpy of the second outlet of oil eliminator, unit kJ/kg；It is logical Cross the 5th mass flow of the mixture that following formula calculates at the second outlet of the four-way valve：
Wherein, G3Indicate that the gas-liquid separator exports the third mass flow of the mixture, unit kg/s, h3Table Show the third enthalpy that the mixture is exported in gas-liquid separator, unit kJ/kg, G5Indicate the second outlet of the four-way valve Locate the 5th mass flow of the mixture, unit kg/s, h5Indicate the mixture four-way valve second outlet Five enthalpies, unit kJ/kg, G7Indicate the 7th mass flow of mixture described in the bypass circulation exit of the recooler, Unit is kg/s, h7Indicate the 7th enthalpy that the mixture is exported in the bypass circulation of recooler, unit kJ/kg.
It is described an embodiment of the present invention provides a kind of multi-connected air conditioning system heat exchange measuring device according to second aspect The entrance of the exhaust outlet connection oil eliminator of the compressor of multi-connected air conditioning system, the first outlet of the oil eliminator connect institute State the air entry of compressor, the second outlet of the oil eliminator is by connecting the entrance of four-way valve, and the first of the four-way valve The entrance of outlet connection outdoor heat exchanger, the entrance of the outlet connection recooler of outdoor heat exchanger, the first of gas-liquid separator enters Mouth connects the bypass circulation outlet of the recooler, and second entrance connects the second outlet of the four-way valve, the gas-liquid separation The outlet of device connects the entrance of the compressor, the major loop outlet connection indoor heat exchanger of the recooler, which is characterized in that Multi-connected air conditioning system heat exchange measuring device includes：First processing module, for according to the disengaging multi-connected air conditioner The principle of the conservation of energy of each component in system obtains what refrigerant and lubricating oil at the second outlet of the four-way valve formed 5th mass flow of mixture；First acquisition module, the exported in the major loop of recooler for obtaining the mixture 11 enthalpies；Second processing module, for obtain the mixture the second outlet of four-way valve the 5th enthalpy, according to described 5th mass flow, the 5th enthalpy, the 11st enthalpy, obtain the refrigerating capacity of the multi-connected air conditioning system；With/ Or, third processing module, for obtain the mixture the second outlet of oil eliminator the 8th enthalpy, according to the described 5th Mass flow, the 8th enthalpy, the 11st enthalpy, obtain the heating capacity of the multi-connected air conditioning system.By above-mentioned Device can more accurately obtain multiple using the principle of the conservation of energy of each component in disengaging multi-connected air conditioning system The refrigerating capacity and/or heating capacity of air-conditioning system.
According to the third aspect, an embodiment of the present invention provides a kind of computer equipment, at least one processor；And with institute State the memory of at least one processor communication connection；Wherein, be stored with can be by least one processor for the memory The computer program of execution, the computer program is executed by least one processor, so that at least one processing The heat exchange that device executes the multi-connected air conditioning system described in any one embodiment of first aspect or first aspect measures Amount method.
It is described computer-readable an embodiment of the present invention provides a kind of computer readable storage medium according to fourth aspect It is stored with computer program on storage medium, such as first aspect or first are realized when the computer program is executed by processor The heat exchange measuring method of multi-connected air conditioning system described in any one embodiment of aspect.
Technical solution of the present invention has the following advantages that：
The present invention provides a kind of multi-connected air conditioning system heat exchange measuring method and device, the multi-connected air conditioning system The entrance of the exhaust outlet connection oil eliminator of compressor, the air entry of the first outlet connect compressor of oil eliminator, oil separation The second outlet of device is by the entrance of connection four-way valve, and the entrance of the first outlet connection outdoor heat exchanger of four-way valve, outdoor is changed The entrance of the outlet connection recooler of hot device, the bypass circulation outlet of the first entrance connection recooler of gas-liquid separator, second Entrance connects the second outlet of four-way valve, the entrance of the outlet connect compressor of gas-liquid separator, the major loop outlet of recooler Indoor heat exchanger is connected, multi-connected air conditioning system heat exchange measuring method includes：According to each in disengaging multi-connected air conditioning system The principle of the conservation of energy of component obtains the 5th of the mixture of the refrigerant and lubricating oil composition at the second outlet of four-way valve Mass flow obtains the 11st enthalpy that mixture is exported in the major loop of recooler, obtains mixture the second of four-way valve 5th enthalpy of outlet obtains the refrigeration of multi-connected air conditioning system according to the 5th mass flow, the 5th enthalpy, the 11st enthalpy Amount；And/or obtain mixture the second outlet of oil eliminator the 8th enthalpy, according to the 5th mass flow, the 8th enthalpy, 11st enthalpy obtains the heating capacity of multi-connected air conditioning system.Through the above steps, according to each in disengaging multi-connected air conditioning system The principle of the conservation of energy of component obtains the mass flow of the mixture for the outlet that four-way valve is connect with gas-liquid separator first, Then enthalpy and mixture of the mixture in the major loop outlet of recooler is obtained what four-way valve was connect with gas-liquid separator to go out Mouthful enthalpy, the refrigerating capacity of multi-connected air conditioning system is obtained according to above-mentioned parameter, and/or, obtain mixture oil eliminator with The enthalpy of the entrance of four-way valve connection, obtains the heating capacity of multi-connected air conditioning system according to the above parameter, is obtained by the process The refrigerating capacity and/or heating capacity of multi-connected air conditioning system, due to directly acquiring enthalpy and the mixing of each module outlet or inlet The mass flow of object, the heat exchange amount of system can be accurately reflected by making its result of calculation more, be solved in the prior art using measurement wind Amount calculates heating capacity or refrigerating capacity, since because air flow field is unevenly distributed, therefore its air quantity can not be accurate under the conditions of at the scene It measures；If the operating status for being measured using outer wind channel mode, and influencing refrigeration heat pump system, leads to test result The problem of cannot reflecting actual conditions.
Description of the drawings
The features and advantages of the present invention can be more clearly understood by reference to attached drawing, attached drawing is schematically without that should manage Solution is carries out any restrictions to the present invention, in the accompanying drawings：
Fig. 1 is the flow chart of multi-connected air conditioning system heat exchange measuring method according to the ... of the embodiment of the present invention；
Fig. 2 is the schematic diagram (one) of multi-connected air conditioning system according to the ... of the embodiment of the present invention；
Fig. 3 is the schematic diagram (two) of multi-connected air conditioning system according to the ... of the embodiment of the present invention；
Fig. 4 is the schematic diagram (three) of multi-connected air conditioning system according to the ... of the embodiment of the present invention；
Fig. 5 is the schematic diagram (four) of multi-connected air conditioning system according to the ... of the embodiment of the present invention；
Fig. 6 is the schematic diagram (five) of multi-connected air conditioning system according to the ... of the embodiment of the present invention；
Fig. 7 is the structure diagram of multi-connected air conditioning system heat exchange measuring device according to the ... of the embodiment of the present invention；
Fig. 8 is the hardware of the computer equipment of multi-connected air conditioning system heat exchange measuring method provided in an embodiment of the present invention Structural schematic diagram；
Reference numeral：Compressor -21, oil eliminator -22, four-way valve -23, outdoor heat exchanger -24, recooler -25, gas-liquid Separator -26, indoor heat exchanger -27, compressor oil return capillary -28, electromagnetic valve outlet oil return capillary -29.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of multi-connected air conditioning system heat exchange measuring method.In a preferred embodiment, should Multi-connected air conditioning system heat exchange measuring method can be applied in multi-connected air conditioning system as shown in Figure 2, the multi-connected air conditioner The entrance of the exhaust outlet connection oil eliminator 22 of the compressor 21 of system, the first outlet connect compressor 21 of oil eliminator 22 Air entry, the entrance of the second outlet connection four-way valve 23 of oil eliminator 22, the first outlet of four-way valve 23 connect outdoor heat exchange The entrance of device 24, the entrance of the outlet connection recooler 25 of outdoor heat exchanger 24, the first entrance connection of gas-liquid separator 26 is again The bypass circulation of cooler 25 exports, and second entrance connects the second outlet of four-way valve 23, the outlet connection pressure of gas-liquid separator 26 The entrance of contracting machine 21, the major loop outlet connection indoor heat exchanger 27 of recooler 25.
As shown in Figure 1, the multi-connected air conditioning system heat exchange measuring method of the embodiment of the present invention includes：
Step S101：According to the principle of the conservation of energy of each component in disengaging multi-connected air conditioning system, four-way valve is obtained 5th mass flow of the mixture of refrigerant and lubricating oil composition at second outlet；Specifically, more in disengaging due to energy In connection formula air-conditioning system when each component, the energy for entering component and the conservation of energy for exporting the component are acquired according to the principle Four-way valve connects the 5th mass flow of the refrigerant of the outlet of gas-liquid separator and the mixture of lubricating oil composition.
Step S102：The 11st enthalpy that said mixture is exported in the major loop of recooler is obtained, since recooler connects It is connected between outdoor heat exchanger and indoor heat exchanger, obtains the enthalpy that mixture is exported in the major loop of recooler, it can be more Accurately measure the refrigerating capacity of multi-connected air conditioning system.
Step S103：Obtain said mixture the second outlet of four-way valve the 5th enthalpy, according to the 5th mass flow, 5th enthalpy, the 11st enthalpy obtain the refrigerating capacity of multi-connected air conditioning system；And/or
Step S104：Obtain said mixture the second outlet of oil eliminator the 8th enthalpy, according to the 5th quality stream Amount, the 8th enthalpy, the 11st enthalpy, obtain the heating capacity of multi-connected air conditioning system.
Through the above steps, it according to the principle of the conservation of energy of each component in disengaging multi-connected air conditioning system, obtains first The mass flow of the mixture for the outlet that four-way valve is connect with gas-liquid separator, then obtain mixture recooler major loop The enthalpy and mixture of outlet obtain multiple in the enthalpy for the outlet that four-way valve is connect with gas-liquid separator according to above-mentioned parameter The refrigerating capacity of air-conditioning system, and/or, the enthalpy for the entrance that mixture is connect in oil eliminator with four-way valve is obtained, according to above Parameter obtains the heating capacity of multi-connected air conditioning system, and refrigerating capacity and/or the heating of multi-connected air conditioning system are obtained by the process Amount makes its result of calculation more can be accurate due to directly acquiring the enthalpy of each module outlet or inlet and the mass flow of mixture The really heat exchange amount of reflection system, solves and calculates heating capacity or refrigerating capacity using air quantity is measured in the prior art, due to existing Because air flow field is unevenly distributed under field condition, therefore its air quantity can not be measured accurately；If surveyed using outer wind channel mode The problem of measuring, and the operating status that refrigeration heat pump system will be influenced, causing test result that cannot reflect actual conditions.
Specifically, the refrigerating capacity of multi-connected air conditioning system is calculated by following formula (1)：
Qe=G5(h5-h11) (1)
In formula (1), QeIndicate the refrigerating capacity of the multi-connected air conditioning system, unit kW, G5Indicate the four-way valve 23 Second outlet at the mixture the 5th mass flow, unit kg/s, h5Indicate the mixture in four-way valve 23 Second outlet the 5th enthalpy, h11Indicate the 11st enthalpy that the mixture is exported in the major loop of recooler 25, unit For kJ/kg.
In a specific embodiment, as shown in Fig. 2, multi-connected air conditioning system further includes compressor oil return capillary 28, the entrance of the compressor oil return capillary 28 is connect with the first outlet of oil eliminator 22, compressor oil return capillary 28 Outlet is connect with the air inlet of compressor 21, electromagnetic valve outlet oil return capillary 29, the electromagnetic valve outlet oil return capillary 29 Entrance is connect with the entrance of four-way valve 23, and the outlet of four-way valve outlet oil return capillary 29 connects with the second outlet of four-way valve 23 It connects, the 5th matter of the mixture of refrigerant and lubricating oil composition at the second outlet of the four-way valve in above-mentioned specific implementation mode Flow, the i.e. mass flow of mixture at the midpoints Fig. 25 are measured, can be obtained by following steps：
Power, leaking heat, the mixture for obtaining compressor 21 exist in the first enthalpy, the mixture of the air entry of compressor 21 Third enthalpy in the outlet of gas-liquid separator 26 of second enthalpy of the outlet of compressor oil return capillary 28, mixture, mixing Object the 4th enthalpy of the outlet of electromagnetic valve outlet oil return capillary 29, mixture gas-liquid separator 26 second entrance The 7th enthalpy that six enthalpies, mixture are exported in the bypass circulation of recooler 25, mixture compressor 21 exhaust outlet the Eight enthalpies, mixture are in the tenth enthalpy in 25 import of recooler of the 9th enthalpy of 24 import of outdoor heat exchanger, mixture, mixing The 11st enthalpy that object is exported in the major loop of recooler 25, wherein 2 midpoint 1 of enthalpy corresponding diagram of each point to the position of point 11 The enthalpy of the mixture at place, specifically, at point 1 to point 7 enthalpy of refrigerant by compressor 21 pressure of inspiration(Pi) and each point Temperature calculates separately to obtain, the pressure of inspiration(Pi) of compressor 21 by the pressure sensor acquisition in the air entry of compressor 21 is arranged, Temperature at each point is by being arranged the temperature sensor acquisition in various point locations；The enthalpy of refrigerant is by compressor at point 8 and point 9 Temperature at 21 pressure at expulsion and each point calculates separately to obtain, and wherein the pressure at expulsion of compressor 21 is by being arranged in compressor 21 Exhaust outlet pressure sensor obtain；When recooler 25 is closed, the enthalpy of refrigerant at 11 is put by the temperature of 11 positions of point Degree calculates saturated liquid enthalpy, when recooler 26 is opened, puts the enthalpy of refrigerant at 10 by the temperature computation of 10 positions of point Saturated liquid enthalpy, the enthalpy for putting refrigerant at 11 are obtained by the pressure at expulsion of compressor 21 and the temperature computation of point 11；Respectively The enthalpy of lubricating oil is determined by the temperature of various point locations at point position, and above procedure has respectively obtained a little 1 to putting at 11 positions The enthalpy of refrigerant and the enthalpy of lubricating oil, and the enthalpy of the mixture of refrigerant at various point locations and lubricating oil composition by with Lower formula (2), (3) are calculated：
Gn=Gn,ref+Gn,oil (2)
In formula (2), GnIndicate the n-th mass flow of the mixture of refrigerant and lubricating oil composition, unit kg/s； Gn,refIndicate the mass flow of refrigerant at the positions point n, unit kg/s；Gn,oilIndicate the quality stream of lubricating oil at the positions point n Amount, unit kg/s；Wherein, n=1,2 ... ..., 11.
hn=Gn,ref×hn,ref+Gn,oil×hn,oil (3)
In formula (3), hnIndicate the n-th enthalpy of the mixture of refrigerant and lubricating oil composition, unit kJ/kg；Gn,ref Indicate the mass flow of refrigerant at the positions point n, unit Kg/s；Gn,oilIndicate the mass flow of lubricating oil at the positions point n, it is single Position is Kg/s；hn,refIndicate the enthalpy of refrigerant at the positions point n, unit kJ/kg；hn,oilIndicate lubricating oil at the positions point n Enthalpy, unit kJ/kg, wherein n=1,2 ... ..., 11.
According to the power of compressor, leaking heat, the first enthalpy and the 8th enthalpy, the mixture of compressor air suction mouth is obtained One mass flow specifically calculates the first mass flow of mixture by following formula (4)：
Pe+G1h1=Qloss+G1h8 (4)
In formula (4), PeIndicate the power of compressor 21, unit kW, G1Indicate the mixture the of 21 air entry of compressor One mass flow, unit kg/s, h1Mixture is indicated in the first enthalpy of the air entry of compressor 21, unit kJ/kg, QlossIndicate the leaking heat of compressor 21, unit kW, h8Indicate mixture in the 8th enthalpy of 21 exhaust outlet of compressor, unit For kJ/kg.
According to the first mass flow of mixture, the first enthalpy, the second enthalpy, third enthalpy, the 4th enthalpy, the 5th enthalpy Value, the 6th enthalpy, the 7th enthalpy, the 8th enthalpy, obtain the 5th mass flow of the mixture at the second outlet of four-way valve 23. Specifically, the 5th mass flow of the mixture at the second outlet of four-way valve 23 is calculated by following formula (5)：
In formula (5), h2Indicate mixture in the second enthalpy of the outlet of compressor oil return capillary 28, h3Indicate mixing Object is in the third enthalpy of the outlet of gas-liquid separator 26, h4Indicate mixture in the outlet of electromagnetic valve outlet oil return capillary 29 4th enthalpy, h5Indicate mixture in the 5th enthalpy of the second outlet of four-way valve 23, h6Indicate mixture in gas-liquid separator 26 Second entrance the 6th enthalpy, h7Indicate the 7th enthalpy that mixture is exported in the bypass circulation of recooler 25, above-mentioned enthalpy Unit be kJ/kg, G2Indicate the second mass flow of the exit mixture of compressor oil return capillary 28, G3Indicate gas Liquid/gas separator 26 exports the third mass flow of the mixture, G4Indicate the exit of the electromagnetic valve outlet oil return capillary 4th mass flow of mixture, G5Indicate the 5th mass flow of mixture at the second outlet of four-way valve 23, G6Indicate gas-liquid 6th mass flow of mixture, G at the second entrance of separator 267Indicate the bypass circulation exit mixture of recooler 25 The 7th mass flow, the unit of above-mentioned mass flow is kg/s.
By formula (4), the equation is energy conservation equation, can obtain the first mass flow G of mixture1, then By G1It substitutes into formula (5), parameter G can be both obtained with simultaneous2To G7To get to the 5th mass flow G of mixture5, then lead to It crosses formula (1) and obtains the refrigerating capacity of multi-connected air conditioning system.By this kind of computational methods, due to acquiring each component disengaging in detail Then temperature and pressure at mouthful is calculated to obtain mixture corresponding mass flow and enthalpy at various point locations Refrigerating capacity keeps refrigerating capacity result of calculation more accurate.
As shown in figure 3, in a specific embodiment, the 5th mass flow of said mixture can also be by following Step obtains：
Calculate the third mass flow of the mixture in the exit of gas-liquid separator 26：
Pe+G3h3=Qloss+G3h8 (6)
In formula (6), PeIndicate the power of compressor 21, unit kW, G3Indicate the mixed of the exit of gas-liquid separator 26 Close the third mass flow of object, unit kg/s, h3Indicate mixture in the third enthalpy of the outlet of gas-liquid separator 26, unit For kJ/kg, QlossIndicate the leaking heat of compressor 21, unit kW, h8Indicate mixture compressor 21 exhaust outlet the 8th Enthalpy, unit kJ/kg, wherein formula (3) of the computational methods of each enthalpy in above-mentioned specific implementation mode has been described in detail, Details are not described herein.After obtaining the third mass flow of mixture, the second outlet of four-way valve 23 is calculated by following formula (7) 5th mass flow of the mixture at place：
In formula (7), h3Indicate mixture in the third enthalpy of the outlet of gas-liquid separator 26, h4Indicate mixture in electricity Magnet valve exports the 4th enthalpy of the outlet of oil return capillary 29, h5Fiveth enthalpy of the expression mixture in the second outlet of four-way valve 23 Value, h6Indicate mixture in the 6th enthalpy of the second entrance of gas-liquid separator 26, h7Bypass of the expression mixture in recooler 25 The unit of 7th enthalpy of circuit outlet, above-mentioned enthalpy is kJ/kg, G3Indicate the exit mixture of gas-liquid separator 26 Third mass flow, G4Indicate the 4th mass flow of the exit mixture of electromagnetic valve outlet oil return capillary 29, G5Indicate four 5th mass flow of mixture, G at the second outlet of port valve 236Indicate mixture at the second entrance of gas-liquid separator 26 6th mass flow, G7Indicate the 7th mass flow of the bypass circulation exit mixture of recooler 25, above-mentioned mass flow Unit be kg/s.Formula (3) of the computational methods of wherein each enthalpy in above-mentioned specific implementation mode has been described in detail, This is repeated no more.After obtaining the 5th mass flow of mixture according to above-mentioned formula (7), is substituted into formula (1), obtained more The refrigerating capacity of connection formula air-conditioning system, this kind of computational methods, the calculating side of refrigerating capacity in specific implementation mode corresponding compared with Fig. 2 Method, required pressure sensor and temperature sensor are reduced, and simplify calculating process.
In multi-connected air conditioning system shown in Fig. 3, refrigerating capacity can also be calculated by following formula (8)：
Qe=G3(h3-h10) (8)
In formula (8), QeIndicate the refrigerating capacity of multi-connected air conditioning system, unit kW, G3Indicate that gas-liquid separator 26 exports The third mass flow of mixture, unit kg/s, h3Indicate mixture in the third enthalpy of the outlet of gas-liquid separator 26, list Position is kJ/kg, h10Indicate mixture in the tenth enthalpy of the import of recooler 25, unit kJ/kg.
As shown in figure 4, in a specific embodiment, calculate the four-way valve by following formula (9) second goes out 5th mass flow of the mixture at mouthful：
In formula (9), PeIndicate the power of compressor 21, unit kW, G5Indicate the system at the second outlet of four-way valve 23 5th mass flow of the mixture of cryogen and lubricating oil composition, unit kg/s, h5Indicate mixture the of four-way valve 23 5th enthalpy of two outlets, unit kJ/kg, G7Indicate the 7th quality stream of the bypass circulation exit mixture of recooler 25 Amount, unit kg/s, h7Indicate the 7th enthalpy that mixture is exported in the bypass circulation of recooler 25, unit kJ/kg, Qloss Indicate the leaking heat of compressor 21, unit kW, h8Mixture is indicated in the 8th enthalpy of 21 exhaust outlet of compressor, unit is KJ/kg, h10Indicate mixture in the tenth enthalpy of 25 import of recooler, unit kJ/kg, h11Indicate mixture in recooler 11st enthalpy of 25 major loop outlet, unit kJ/kg.As shown in figure 4, in Fig. 4 required pressure sensor number Amount specific implementation mode corresponding compared with above-mentioned Fig. 2 and Fig. 3 with the quantity of temperature sensor reduces very much, this kind of computational methods Also with the principle of the conservation of energy, the 5th mass flow of mixture is first obtained, then by the 5th mass flow of mixture It substitutes into formula (1) and obtains the refrigerating capacity of multi-connected air conditioning system.
In another embodiment, the corresponding refrigeration of the schematic diagram of Fig. 2 to multi-connected air conditioning system shown in Fig. 4 Amount, can also be obtained by following formula (10)：
Qe=Qc-Pe+Qloss-Pf (10)
In formula (10), QeIndicate the refrigerating capacity of multi-connected air conditioning system, unit kW, QcIndicate outdoor heat exchanger 24 Heat exhaust, unit kW, PeIndicate the power of compressor 21, unit kW, QlossIndicate that the leaking heat of compressor 21, unit are KW, PfIndicate the power of outside wind turbine, unit kW, wherein when multi-connected air conditioning system installs outside wind turbine, consider Parameter PfIf the outside wind turbine is fitted without in multi-connected air conditioning system, without the concern for parameter Pf；Outside is changed The heat exhaust Q of hot device 24c=(G7+G5)(h9-h10), h9Indicate mixture in the 9th enthalpy of 24 import of outdoor heat exchanger, unit For kJ/kg, h10Indicate mixture in the tenth enthalpy of 25 import of recooler, unit kJ/kg, G5Indicate the of the four-way valve 5th mass flow of the mixture of refrigerant and the lubricating oil composition in two exits, unit kg/s, G7It is cold again described in indicating 7th mass flow of mixture, unit kg/s described in the bypass circulation exit of device.
In a specific embodiment, the heating capacity of multi-connected air conditioning system is calculated by following formula (11)：
Qc=G5(h8-h11) (11)
In formula (11), QcIndicate the heating capacity of multi-connected air conditioning system, unit kW, G5Indicate the second of four-way valve 23 5th mass flow of the mixture in exit, unit kg/s, h8Indicate mixture oil eliminator 22 second outlet 8th enthalpy, unit kJ/kg, h11Indicate the 11st enthalpy that mixture is exported in the major loop of recooler 25, unit kJ/ kg.The schematic diagram of the corresponding multi-connected air conditioning system of the formula is Fig. 5 to air-conditioning system structure chart shown in fig. 6.Pass through the public affairs Formula first obtains the 5th mass flow of mixture, and the heating capacity of multi-connected air conditioning system, calculating process letter is then calculated It is single, it easy can accurately obtain the heating capacity of multi-connected air conditioning system.
In a specific embodiment, as shown in figure 5, when recooler 25 is closed, the 5th mass of said mixture Flow is obtained by following steps：
The 5th enthalpy of power, leaking heat, mixture in the second outlet of four-way valve 23 for obtaining compressor 21, according to pressure Power, leaking heat, the 5th enthalpy, the 8th enthalpy of contracting machine 21, obtain the 5th of the mixture at the second outlet of four-way valve 23 Mass flow.Specifically, the 5th mass flow of the mixture in four-way valve exit is calculated by following formula (12)：
Pe+G5h5=Qloss+G5h8 (12)
In formula (12), PeIndicate the power of compressor 21, unit kW, G5Indicate the system at the second outlet of four-way valve 5th mass flow of the mixture of cryogen and lubricating oil composition, unit kg/s, h5Indicate mixture the second of four-way valve 5th enthalpy of outlet, unit kJ/kg, QlossIndicate the leaking heat of compressor, unit kW, h8Indicate mixture in oil 8th enthalpy of the second outlet from device, unit kJ/kg.Wherein, the enthalpy of refrigerant at 5 positions is put by the suction of compressor 21 Atmospheric pressure and the temperature computation put at 5 positions obtain, and put the enthalpy of refrigerant at 8 positions by the pressure at expulsion and point of compressor 21 Temperature computation at 8 positions obtains, and the enthalpy of lubricating oil is determined by the temperature of each point at each point, is made of refrigerant and lubricating oil The enthalpy of mixture calculate separately to obtain by the refrigerant and the enthalpy of lubricating oil, mass flow of each point, specifically calculated Journey is shown in the detailed description of formula (3), and details are not described herein.By the energy conservation equation, the of mixture can be calculated Then five mass flows are substituted into formula (11), the heating capacity of multi-connected air conditioning system can be calculated.
In another embodiment, as shown in fig. 6, when recooler is opened, the 5th mass flow of mixture It is obtained by following steps：
Calculate the third mass flow of the mixture：
Pe+G3h3=Qloss+G3h8 (13)
In formula (13), PeThe power of the compressor 21, unit kW, G3Indicate that gas-liquid separator 26 exports mixture Third mass flow, unit kg/s, h3Indicate the third enthalpy that mixture is exported in gas-liquid separator 26, unit kJ/ Kg, QlossIndicate the leaking heat of compressor 21, unit kW, h8Indicate mixture oil eliminator 22 second outlet the 8th After obtaining the third mass flow of mixture, the of four-way valve 23 is calculated by following formula (14) by enthalpy, unit kJ/kg 5th mass flow of the mixture in two exits：
In formula (14), G3Indicate that gas-liquid separator 26 exports the third mass flow of mixture, unit kg/s, h3Table Show the third enthalpy that mixture is exported in gas-liquid separator 26, unit kJ/kg, G5It indicates to mix at the second outlet of four-way valve 23 Close the 5th mass flow of object, unit kg/s, h5Indicate mixture in the 5th enthalpy of the second outlet of four-way valve 23, unit For kJ/kg, G7Indicate the 7th mass flow of the bypass circulation exit mixture of recooler 25, unit kg/s, h7Indicate mixed Close the 7th enthalpy that object is exported in the bypass circulation of recooler 25, unit kJ/kg.Wherein, system at 7 positions of point 3, point 5 and point The enthalpy of cryogen is calculated separately by the pressure of inspiration(Pi) of compressor 22 and the temperature of each point of multi-connected air conditioning system, is put at 8 positions 21 pressure at expulsion of enthalpy compressor and temperature computation of lubricating oil, refrigerant and lubricating oil can be obtained by refrigerant and lubricating oil The corresponding enthalpy of the mixture of composition.The 5th mass flow that mixture is calculated by the formula, is then substituted into In formula (11), the heating capacity of multi-connected air conditioning system is calculated.
Multi-connected air conditioning system shown in fig. 5, heating capacity can also be calculated by following formula (15)：
Qc=Qe+Pe-Qloss (15)
In formula (15), QcIndicate the heating capacity of multi-connected air conditioning system, unit kW, QeIndicate outdoor heat exchanger 24 Caloric receptivity, unit kW, PeIndicate the power of compressor 21, unit kW, QlossIndicate the leaking heat of the compressor, unit For kW, wherein Qe=G3(h3-h11), G3Indicate that gas-liquid separator 26 exports the third mass flow of mixture, h3Indicate mixing The third enthalpy that object is exported in gas-liquid separator, h11Indicate the 11st enthalpy that mixture is exported in the major loop of recooler 25. Specifically, enthalpy of the refrigerant at 3 positions of point is obtained by the pressure of inspiration(Pi) of compressor 21 and the temperature computation of the point, refrigerant It is obtained by the pressure at expulsion of compressor 21 and the temperature computation of the point putting the enthalpy at 8 positions, refrigerant is being put at 11 positions Enthalpy obtained by temperature computation saturated liquid enthalpy, lubricating oil is determined in the enthalpy of each point by the temperature of each point, and refrigerant It is obtained, is had by the refrigerant and the enthalpy of lubricating oil, mass flow calculation of each point with the enthalpy of the mixture of lubricating oil composition Body calculating process has been described in detail in formula (3), and details are not described herein.
A kind of multi-connected air conditioning system heat exchange measuring device is additionally provided in the present embodiment, and the device is for realizing upper Embodiment and preferred embodiment are stated, repeating no more for explanation had been carried out.As used below, term " module " can be with Realize the combination of the software and/or hardware of predetermined function.Although device described in following embodiment is preferably come with software real It is existing, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.
In a preferred embodiment, the multi-connected air conditioning system heat exchange measuring device of the embodiment of the present invention can be used for measuring The heat exchange amount of multi-connected air conditioning system as shown in Figure 2.The exhaust outlet of the compressor 21 of the multi-connected air conditioning system connects oil The second outlet of entrance from device 22, the air entry of the first outlet connect compressor 21 of oil eliminator 22, oil eliminator 22 is logical The entrance of connection four-way valve 23 is crossed, the first outlet of four-way valve 23 connects the entrance of outdoor heat exchanger 24, outdoor heat exchanger 24 The entrance of outlet connection recooler 25, the bypass circulation outlet of the first entrance connection recooler 25 of gas-liquid separator 26, second Entrance connects the second outlet of four-way valve 23, the entrance of the outlet connect compressor 21 of gas-liquid separator 26, the master of recooler 25 Circuit outlet connects indoor heat exchanger 27.
As shown in fig. 7, the multi-connected air conditioning system heat exchange measuring device of the embodiment of the present invention includes：First processing module 31, for the principle according to the conservation of energy of each component in disengaging multi-connected air conditioning system, obtain the second outlet of four-way valve 23 5th mass flow of the mixture of refrigerant and the lubricating oil composition at place；First acquisition module 32, exists for obtaining mixture 11st enthalpy of the major loop outlet of recooler 25；Second processing module 33, for obtaining mixture the of four-way valve 23 5th enthalpy of two outlets obtains the system of multi-connected air conditioning system according to the 5th mass flow, the 5th enthalpy, the 11st enthalpy Cold；And/or third processing module 34, for obtain mixture the second outlet of oil eliminator 22 the 8th enthalpy, according to 5th mass flow, the 8th enthalpy, the 11st enthalpy obtain the heating capacity of multi-connected air conditioning system.
By multi-connected air conditioning system heat exchange measuring device, each component of disengaging is utilized by first processing module 31 The principle of the conservation of energy obtains mass flow of the mixture at the second outlet of four-way valve 23, then Second processing module 32 Enthalpy and the 5th mass flow by obtained each point, obtain the heating capacity of multi-connected air conditioning system, and/or, third processing Module 33 is obtained the heating capacity of multi-connected air conditioning system, can be passed through by the enthalpy and the 5th mass flow of obtained each point Enthalpy and mass flow solve to obtain heat exchange amount and convert to obtain refrigerating capacity or system by measuring air quantity in the prior art Heat, the problem of result of calculation inaccuracy.
The further function description of above-mentioned modules is identical as above-mentioned corresponding embodiment, and details are not described herein.
The embodiment of the present invention additionally provides a kind of computer equipment, and Fig. 8 is multi-connected air conditioner provided in an embodiment of the present invention The hardware architecture diagram of the computer equipment of system heat exchange measuring method, as shown in figure 8, the computer equipment includes one Or multiple processors 41 and memory 42, in Fig. 8 by taking a processor 41 as an example.
The computer equipment can also include：Input unit 43 and output device 44.
Processor 41, memory 42, input unit 43 and output device 44 can be connected by bus or other modes, In Fig. 8 for being connected by bus.
Processor 41 can be central processing unit (Central Processing Unit, CPU).Processor 41 can be with For other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field- Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic, The combination of the chips such as discrete hardware components or above-mentioned all kinds of chips.General processor can be microprocessor or the processing Device can also be any conventional processor etc..
Memory 42 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non- Transient computer executable program and module, such as the multi-connected air conditioning system heat exchange measuring method pair in the embodiment of the present invention Answer program instruction/module (for example, first processing module shown in Fig. 7 31, the first acquisition module 32, Second processing module 33, Third processing module 34 etc.).Processor 41 is stored in non-transient software program, instruction and mould in memory 42 by operation The multiple described in above method embodiment is realized in block, the various function application to execute server and data processing Air-conditioning system heat exchange measuring method.
Memory 42 may include storing program area and storage data field, wherein storing program area can storage program area, At least one required application program of function；Storage data field can be stored according to multi-connected air conditioning system heat exchange measuring device Use created data etc..In addition, memory 42 may include high-speed random access memory, can also include non-transient Memory, for example, at least a disk memory, flush memory device or other non-transient solid-state memories.In some implementations In example, it includes the memory remotely located relative to processor 41 that memory 42 is optional, these remote memories can pass through net Network is connected to multi-connected air conditioning system heat exchange measuring device.The example of above-mentioned network includes but not limited to internet, in enterprise Portion's net, LAN, mobile radio communication and combinations thereof.
Input unit 43 can receive inquiry request input by user (or other number or character informations), and generate with it is more The related key signals input of user setting and function control of connection formula air-conditioning system heat exchange measuring device.Output device 44 can Equipment is shown including display screen etc., to export result of calculation.
One or more of modules are stored in the memory 42, when by one or more of processors 41 When execution, method as shown in Figures 1 to 6 is executed.
The said goods can perform the method that the embodiment of the present invention is provided, and has the corresponding function module of execution method and has Beneficial effect.The not technical detail of detailed description in the present embodiment, for details, reference can be made in embodiment as shown in Figures 1 to 6 Associated description.
The embodiment of the present invention also provides a kind of non-transient computer storage medium, and the computer storage media is stored with meter Calculation machine executable instruction, the multi-connected air conditioning system which can perform in above-mentioned any means embodiment change Calorimetry method.Wherein, the storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), flash memory (Flash Memory), hard disk (HardDisk Drive, abbreviation：) or solid state disk (Solid-State Drive, SSD) etc. HDD；The storage medium may be used also With the combination of the memory including mentioned kind.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims (16)

  1. The measuring method 1. a kind of multi-connected air conditioning system exchanges heat, the exhaust outlet connection of the compressor of the multi-connected air conditioning system The entrance of oil eliminator, the first outlet of the oil eliminator connect the air entry of the compressor, and the of the oil eliminator The entrance of two outlet connection four-way valves, the entrance of the first outlet connection outdoor heat exchanger of the four-way valve, outdoor heat exchanger The first entrance of the entrance of outlet connection recooler, gas-liquid separator connects the bypass circulation outlet of the recooler, and second enters Mouth connects the second outlet of the four-way valve, and the outlet of the gas-liquid separator connects the entrance of the compressor, described cold again The major loop outlet connection indoor heat exchanger of device, which is characterized in that multi-connected air conditioning system heat exchange measuring method includes：
    According to the principle for passing in and out the conservation of energy of each component in the multi-connected air conditioning system, obtain the four-way valve second goes out 5th mass flow of the mixture of refrigerant and lubricating oil composition at mouthful；
    Obtain the 11st enthalpy that the mixture is exported in the major loop of recooler；
    Obtain the mixture the second outlet of four-way valve the 5th enthalpy, according to the 5th mass flow, the described 5th Enthalpy, the 11st enthalpy, obtain the refrigerating capacity of the multi-connected air conditioning system；And/or
    Obtain the mixture the second outlet of oil eliminator the 8th enthalpy, according to the 5th mass flow, described Eight enthalpies, the 11st enthalpy, obtain the heating capacity of the multi-connected air conditioning system.
  2. The measuring method 2. multi-connected air conditioning system according to claim 1 exchanges heat, which is characterized in that pass through following formula Calculate the refrigerating capacity of the multi-connected air conditioning system：
    Qe=G5(h5-h11),
    Wherein, QeIndicate the refrigerating capacity of the multi-connected air conditioning system, unit kW, G5Indicate the second outlet of the four-way valve 5th mass flow of the mixture at place, unit kg/s, h5Indicate the mixture four-way valve second outlet 5th enthalpy, h11Indicate the 11st enthalpy that the mixture is exported in the major loop of recooler, unit kJ/kg.
  3. The measuring method 3. multi-connected air conditioning system according to claim 2 exchanges heat, which is characterized in that the multiple air conditioner Adjusting system further includes：Compressor oil return capillary, the first outlet of the entrance and oil eliminator of the compressor oil return capillary Connection, the outlet of the compressor oil return capillary is connect with the air inlet of the compressor；Electromagnetic valve outlet oil return capillary, The entrance of the electromagnetic valve outlet oil return capillary is connect with the entrance of the four-way valve, the four-way valve outlet oil return capillary Outlet connect with the second outlet of the four-way valve,
    It is described according to the principle for passing in and out the conservation of energy of each component in the multi-connected air conditioning system, obtain the of the four-way valve 5th mass flow of the mixture of refrigerant and the lubricating oil composition in two exits, including：
    Obtain the first enthalpy in the air entry of compressor of the power, leaking heat, the mixture of the compressor, the mixing Object the second enthalpy of the outlet of compressor oil return capillary, the mixture the outlet of gas-liquid separator third enthalpy, The mixture is in the 4th enthalpy of the outlet of electromagnetic valve outlet oil return capillary, the mixture the second of gas-liquid separator The 7th enthalpy that 6th enthalpy of entrance, the mixture are exported in the bypass circulation of recooler, the mixture are in compressor 8th enthalpy of exhaust outlet；The mixture is in the 9th enthalpy of outdoor heat exchanger import, the mixture in recooler import The tenth enthalpy, the mixture recooler major loop export the 11st enthalpy；
    According to the power of the compressor, leaking heat, first enthalpy and the 8th enthalpy, the compressor air suction is obtained The first mass flow of the mixture of mouth；
    According to the first mass flow of the mixture, first enthalpy, second enthalpy, the third enthalpy, described 4th enthalpy, the 5th enthalpy, the 6th enthalpy, the 7th enthalpy, the 8th enthalpy, obtain the four-way valve 5th mass flow of the mixture at second outlet.
  4. The measuring method 4. multi-connected air conditioning system according to claim 3 exchanges heat, which is characterized in that pass through following formula Calculate the first mass flow of the mixture of the compressor air suction mouth：
    Pe+G1h1=Qloss+G1h8,
    Wherein, PeIndicate the power of the compressor, unit kW, G1Indicate the mixture of the compressor air suction mouth One mass flow, unit kg/s, h1The mixture is indicated in the first enthalpy of the air entry of compressor, unit kJ/kg, QlossIndicate that the leaking heat of the compressor, unit are kW, h8Indicate the mixture exhaust outlet of compressor the 8th enthalpy Value, unit kJ/kg；
    It is calculated by the following formula the 5th mass flow of the mixture at the second outlet of the four-way valve：
    Wherein, h2Indicate the mixture in the second enthalpy of the outlet of compressor oil return capillary, h3Indicate that the mixture exists The third enthalpy of the outlet of gas-liquid separator, h4Indicate the mixture the 4th of the outlet of electromagnetic valve outlet oil return capillary Enthalpy, h5Indicate the mixture in the 5th enthalpy of the second outlet of four-way valve, h6Indicate the mixture in gas-liquid separator Second entrance the 6th enthalpy, h7Indicate the 7th enthalpy that the mixture is exported in the bypass circulation of recooler, above-mentioned enthalpy The unit of value is kJ/kg, G2Indicate the second mass flow of mixture described in the exit of the compressor oil return capillary, G3Indicate that the gas-liquid separator exports the third mass flow of the mixture, G4Indicate the electromagnetic valve outlet oil return capillary 4th mass flow of mixture described in the exit of pipe, G5Indicate of the mixture at the second outlet of the four-way valve Five mass flows, G6Indicate the 6th mass flow of the mixture at the second entrance of the gas-liquid separator, G7Described in expression 7th mass flow of mixture described in the bypass circulation exit of recooler, the unit of above-mentioned mass flow is kg/s.
  5. The measuring method 5. multi-connected air conditioning system according to claim 2 exchanges heat, which is characterized in that the multiple air conditioner Adjusting system further includes：Electromagnetic valve outlet oil return capillary, entrance and the four-way valve of the electromagnetic valve outlet oil return capillary Entrance connection, the outlet of the four-way valve outlet oil return capillary connect with the second outlet of the four-way valve,
    It is described according to the principle for passing in and out the conservation of energy of each component in the multi-connected air conditioning system, obtain the of the four-way valve 5th mass flow of the mixture of refrigerant and the lubricating oil composition in two exits, including：
    Obtain third enthalpy, the mixing that the power, leaking heat, the mixture of the compressor are exported in gas-liquid separator Object the 4th enthalpy of the outlet of electromagnetic valve outlet oil return capillary, the mixture gas-liquid separator second entrance Six enthalpies, the mixture recooler bypass circulation export the 7th enthalpy, the mixture compressor exhaust outlet The 8th enthalpy, the mixture the 9th enthalpy of the import of outdoor heat exchanger, the mixture recooler import The 11st enthalpy that tenth enthalpy, the mixture are exported in the major loop of recooler；
    According to the power of the compressor, leaking heat, the third enthalpy and the 8th enthalpy, the gas-liquid separator is obtained Exit the mixture third mass flow；
    According to the third mass flow, the third enthalpy, the 4th enthalpy, the 5th enthalpy, the 6th enthalpy, 7th enthalpy obtains the 5th mass flow of the mixture at the second outlet of the four-way valve.
  6. The measuring method 6. multi-connected air conditioning system according to claim 5 exchanges heat, which is characterized in that pass through following formula Calculate the third mass flow of the mixture in the exit of the gas-liquid separator：
    Pe+G3h3=Qloss+G3h8
    Wherein, PeIndicate the power of the compressor, unit kW, G3Indicate the described mixed of the exit of the gas-liquid separator Close the third mass flow of object, unit kg/s, h3Indicate the mixture in the third enthalpy of the outlet of gas-liquid separator, list Position is kJ/kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate the mixture compressor exhaust outlet The 8th enthalpy, unit kJ/kg；
    It is calculated by the following formula the 5th mass flow of the mixture at the second outlet of the four-way valve：
    Wherein, h3Indicate the mixture in the third enthalpy of the outlet of gas-liquid separator, h4Indicate the mixture in solenoid valve Export the 4th enthalpy of the outlet of oil return capillary, h5Indicate the mixture in the 5th enthalpy of the second outlet of four-way valve, h6 Indicate the mixture in the 6th enthalpy of the second entrance of gas-liquid separator, h7Indicate the mixture recooler bypass The unit of 7th enthalpy of circuit outlet, above-mentioned enthalpy is kJ/kg, G3It indicates to mix described in the exit of the gas-liquid separator Close the third mass flow of object, G4Indicate the 4th mass of mixture described in the exit of the electromagnetic valve outlet oil return capillary Flow, G5Indicate the 5th mass flow of the mixture at the second outlet of the four-way valve, G6Indicate the gas-liquid separator Second entrance at the mixture the 6th mass flow, G7It indicates to mix described in the bypass circulation exit of the recooler The unit of 7th mass flow of object, above-mentioned mass flow is kg/s.
  7. The measuring method 7. multi-connected air conditioning system according to claim 2 exchanges heat, which is characterized in that described according to disengaging The principle of the conservation of energy of each component in the multi-connected air conditioning system, obtains the refrigerant at the second outlet of the four-way valve 5th mass flow of the mixture formed with lubricating oil, including：
    Obtain the 7th enthalpy, the institute that the power, leaking heat, the mixture of the compressor are exported in the bypass circulation of recooler State the 11st enthalpy that mixture is exported in the tenth enthalpy, the mixture of recooler import in the major loop of recooler；
    According to the power of the compressor, leaking heat, the 5th enthalpy, the 7th enthalpy, the tenth enthalpy, described 11 enthalpies obtain the 5th mass flow of the mixture at the second outlet of the four-way valve.
  8. The measuring method 8. multi-connected air conditioning system according to claim 7 exchanges heat, which is characterized in that pass through following formula Calculate the 5th mass flow of the mixture at the second outlet of the four-way valve：
    Wherein, PeIndicate the power of the compressor, unit kW, G5Indicate the refrigerant at the second outlet of the four-way valve With the 5th mass flow of the mixture of lubricating oil composition, unit kg/s, h5Indicate the mixture the second of four-way valve 5th enthalpy of outlet, unit kJ/kg, G7Indicate the 7th matter of mixture described in the bypass circulation exit of the recooler Measure flow, unit kg/s, h7Indicate the 7th enthalpy that the mixture is exported in the bypass circulation of recooler, unit kJ/ Kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate the mixture exhaust outlet of compressor the 8th enthalpy Value, unit kJ/kg, h10Indicate the mixture in the tenth enthalpy of recooler import, unit kJ/kg, h11Described in expression The 11st enthalpy that mixture is exported in the major loop of recooler, unit kJ/kg.
  9. The measuring method 9. multi-connected air conditioning system according to claim 1 exchanges heat, which is characterized in that pass through following formula Calculate the heating capacity of the multi-connected air conditioning system：
    Qc=G5(h8-h11),
    Wherein, QcIndicate the heating capacity of the multi-connected air conditioning system, unit kW, G5Indicate the second outlet of the four-way valve 5th mass flow of the mixture at place, unit kg/s, h8Indicate the mixture oil eliminator second outlet The 8th enthalpy, unit kJ/kg, h11Indicate the 11st enthalpy that the mixture is exported in the major loop of recooler, unit For kJ/kg.
  10. The measuring method 10. multi-connected air conditioning system according to claim 9 exchanges heat, which is characterized in that when described cold again When device is closed, the 5th mass flow of the mixture is obtained by following steps：
    Obtain the power, leaking heat, the mixture of the compressor the second outlet of four-way valve the 5th enthalpy；
    According to the power of the compressor, leaking heat, the 5th enthalpy, the 8th enthalpy, the of the four-way valve is obtained 5th mass flow of the mixture in two exits.
  11. The measuring method 11. multi-connected air conditioning system according to claim 10 exchanges heat, which is characterized in that pass through following public affairs Formula calculates the 5th mass flow of the mixture in the four-way valve exit：
    Pe+G5h5=Qloss+G5h8,
    Wherein, PeIndicate the power of the compressor, unit kW, G5Indicate the refrigerant at the second outlet of the four-way valve With the 5th mass flow of the mixture of lubricating oil composition, unit kg/s, h5Indicate the mixture the second of four-way valve 5th enthalpy of outlet, unit kJ/kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate the mixing Object is in the 8th enthalpy of the second outlet of oil eliminator, unit kJ/kg.
  12. The measuring method 12. multi-connected air conditioning system according to claim 9 exchanges heat, which is characterized in that when described cold again When device is opened, the 5th mass flow of the mixture obtains as follows：
    Obtain the third enthalpy that the power, leaking heat, the mixture of the compressor are exported in gas-liquid separator；
    According to the power of the compressor, leaking heat, the third enthalpy, the 8th enthalpy, the gas-liquid separator is obtained Exit the mixture third mass flow；
    Obtain the 7th enthalpy that the mixture is exported in the bypass circulation of recooler；
    According to the third mass flow, the third enthalpy, the 5th enthalpy, the 7th enthalpy, the four-way is obtained 5th mass flow of the mixture at the second outlet of valve.
  13. The measuring method 13. multi-connected air conditioning system according to claim 12 exchanges heat, which is characterized in that pass through following public affairs Formula calculates the third mass flow of the mixture：
    Pe+G3h3=Qloss+G3h8
    Wherein, PeIndicate the power of the compressor, unit kW, G3Indicate that the gas-liquid separator exports the mixture Third mass flow, unit kg/s, h3Indicate the third enthalpy that the mixture is exported in gas-liquid separator, unit kJ/ Kg, QlossIndicate the leaking heat of the compressor, unit kW, h8Indicate the mixture oil eliminator second outlet 8th enthalpy, unit kJ/kg；
    It is calculated by the following formula the 5th mass flow of the mixture at the second outlet of the four-way valve：
    Wherein, G3Indicate that the gas-liquid separator exports the third mass flow of the mixture, unit kg/s, h3Indicate institute State the third enthalpy that mixture is exported in gas-liquid separator, unit kJ/kg, G5Indicate the second outlet place of the four-way valve State the 5th mass flow of mixture, unit kg/s, h5Indicate the mixture the second outlet of four-way valve the 5th enthalpy Value, unit kJ/kg, G7Indicate the 7th mass flow of mixture described in the bypass circulation exit of the recooler, unit For kg/s, h7Indicate the 7th enthalpy that the mixture is exported in the bypass circulation of recooler, unit kJ/kg.
  14. The exhaust outlet of the measuring device 14. a kind of multi-connected air conditioning system exchanges heat, the compressor of the multi-connected air conditioning system connects The entrance of oil eliminator is connect, the first outlet of the oil eliminator connects the air entry of the compressor, the oil eliminator Second outlet is by the entrance of connection four-way valve, and the entrance of the first outlet connection outdoor heat exchanger of the four-way valve, outdoor is changed The first entrance of the entrance of the outlet connection recooler of hot device, gas-liquid separator connects the bypass circulation outlet of the recooler, Second entrance connects the second outlet of the four-way valve, and the outlet of the gas-liquid separator connects the entrance of the compressor, institute State the major loop outlet connection indoor heat exchanger of recooler, which is characterized in that the multi-connected air conditioning system heat exchange measurement dress Set including：
    First processing module, for according to the principle for passing in and out the conservation of energy of each component in the multi-connected air conditioning system, obtaining 5th mass flow of the mixture of refrigerant and lubricating oil composition at the second outlet of the four-way valve；
    First acquisition module, the 11st enthalpy exported in the major loop of recooler for obtaining the mixture；
    Second processing module, for obtain the mixture the second outlet of four-way valve the 5th enthalpy, according to the described 5th Mass flow, the 5th enthalpy, the 11st enthalpy, obtain the refrigerating capacity of the multi-connected air conditioning system；And/or
    Third processing module, for obtain the mixture the second outlet of oil eliminator the 8th enthalpy, according to described Five mass flows, the 8th enthalpy, the 11st enthalpy, obtain the heating capacity of the multi-connected air conditioning system.
  15. 15. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The heat exchange measuring of the multi-connected air conditioning system as described in any one of claim 1 to 13 is realized when being executed by processor Method.
  16. 16. a kind of computer equipment, which is characterized in that including：
    At least one processor；And
    The memory being connect at least one processor communication；Wherein, be stored with can be by described at least one for the memory The computer program that a processor executes, the computer program are executed by least one processor so that it is described at least One processor perform claim requires the heat exchange measuring method of the multi-connected air conditioning system described in any one of 1 to 13.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109489295A (en) * 2018-11-21 2019-03-19 青岛海信日立空调***有限公司 Multi-connected air conditioning system and its control method
CN109855245A (en) * 2019-02-13 2019-06-07 青岛海尔空调电子有限公司 Multi-online air-conditioning system and its heat exchange amount calculation method
WO2020238183A1 (en) * 2019-05-24 2020-12-03 青岛海尔空调电子有限公司 Multi-split air conditioning system and heat exchange calculation amount method therefor
WO2022156220A1 (en) * 2021-01-21 2022-07-28 广东美的暖通设备有限公司 Multi-split unit operational capacity detection method, multi-split unit, storage medium, and device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338951A (en) * 2008-08-18 2009-01-07 南京天加空调设备有限公司 Water cooling heat pump type multiple air-conditioning unit
CN202442818U (en) * 2011-12-28 2012-09-19 曹阳 High-precision multi-connection type air-conditioning (heat pump) set indoor unit refrigerating capacity on-site tester
CN104633771A (en) * 2013-11-13 2015-05-20 珠海格力电器股份有限公司 Multi-connected air conditioning unit and control method thereof
CN105299845A (en) * 2015-11-20 2016-02-03 广东美的制冷设备有限公司 Virtual running parameter detecting method and device of air conditioner system
US20170159982A1 (en) * 2013-01-24 2017-06-08 Advantek Consulting Engineering, Inc. Optimizing energy efficiency ratio feedback control for direct expansion air-conditioners and heat pumps
CN107328041A (en) * 2017-08-31 2017-11-07 广东美的制冷设备有限公司 Air conditioner and its efficiency computational methods
CN107514759A (en) * 2017-08-31 2017-12-26 广东美的制冷设备有限公司 Air conditioner and its efficiency computational methods

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338951A (en) * 2008-08-18 2009-01-07 南京天加空调设备有限公司 Water cooling heat pump type multiple air-conditioning unit
CN202442818U (en) * 2011-12-28 2012-09-19 曹阳 High-precision multi-connection type air-conditioning (heat pump) set indoor unit refrigerating capacity on-site tester
US20170159982A1 (en) * 2013-01-24 2017-06-08 Advantek Consulting Engineering, Inc. Optimizing energy efficiency ratio feedback control for direct expansion air-conditioners and heat pumps
CN104633771A (en) * 2013-11-13 2015-05-20 珠海格力电器股份有限公司 Multi-connected air conditioning unit and control method thereof
CN105299845A (en) * 2015-11-20 2016-02-03 广东美的制冷设备有限公司 Virtual running parameter detecting method and device of air conditioner system
CN107328041A (en) * 2017-08-31 2017-11-07 广东美的制冷设备有限公司 Air conditioner and its efficiency computational methods
CN107514759A (en) * 2017-08-31 2017-12-26 广东美的制冷设备有限公司 Air conditioner and its efficiency computational methods

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
余珏 等: "基于现场实测的地铁站设备管理用房设备发热量计算方法研究", 《建筑科学》 *
黄文宇 等: "空气源热泵现场性能测试技术的研究进展", 《暖通空调HV&HC》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109489295A (en) * 2018-11-21 2019-03-19 青岛海信日立空调***有限公司 Multi-connected air conditioning system and its control method
CN109489295B (en) * 2018-11-21 2021-03-30 青岛海信日立空调***有限公司 Multi-connected air conditioning system and control method thereof
CN109855245A (en) * 2019-02-13 2019-06-07 青岛海尔空调电子有限公司 Multi-online air-conditioning system and its heat exchange amount calculation method
WO2020164228A1 (en) * 2019-02-13 2020-08-20 青岛海尔空调电子有限公司 Multi-split air-conditioning system, and method for calculating heat exchange capacity thereof
CN109855245B (en) * 2019-02-13 2021-09-21 青岛海尔空调电子有限公司 Multi-split air conditioning system and heat exchange amount calculation method thereof
WO2020238183A1 (en) * 2019-05-24 2020-12-03 青岛海尔空调电子有限公司 Multi-split air conditioning system and heat exchange calculation amount method therefor
US11892213B2 (en) 2019-05-24 2024-02-06 Qingdao Haier Air-Conditioning Electronic Co., Ltd Multi-connection air conditioning system and method for calculating heat exchange amount thereof
WO2022156220A1 (en) * 2021-01-21 2022-07-28 广东美的暖通设备有限公司 Multi-split unit operational capacity detection method, multi-split unit, storage medium, and device

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