CN102269661B - Testing system for performance of air-cooled compression condensing unit - Google Patents
Testing system for performance of air-cooled compression condensing unit Download PDFInfo
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- CN102269661B CN102269661B CN201110182625.0A CN201110182625A CN102269661B CN 102269661 B CN102269661 B CN 102269661B CN 201110182625 A CN201110182625 A CN 201110182625A CN 102269661 B CN102269661 B CN 102269661B
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- 239000003507 refrigerant Substances 0.000 claims abstract description 26
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
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- 238000005070 sampling Methods 0.000 claims abstract description 4
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
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- 238000012545 processing Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000019439 energy homeostasis Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention discloses a testing system for performance of an air-cooled compression condensing unit, and belongs to the technical field of building environment and equipment engineering. The testing system comprises an air circulation processing system, a refrigerant circulating system and an energy balancing and metering system, wherein the air circulation processing system comprises a testing environment room, a fan, an air processing unit and a compression condensing unit matched therewith, and an air sampling device; high-temperature high-pressure refrigerant liquid from the compression condensing unit to be tested is throttled into a gas-liquid diphasic fluid by a throttle valve, enters an evaporation coil in a calorimeter instrument, and is heated by a second refrigerant into overheat steam to return to the compression condensing unit to be tested, so that the whole refrigeration circulation is completed; and secondary refrigerants in a surface cooling coil in the air processing unit in a centrifugal pump and a heating coil in the calorimeter instrument forms a secondary refrigerant circulation by a centrifugal pump. The system can realize energy self-balance, reduce running energy consumption and accurately test performance parameters, such as refrigerating capacity, of the air-cooled compression condensing unit.
Description
Technical field
The present invention relates to a kind of performance testing system of air-cooled compression condensing unit, be used for the performance parameters such as the refrigerating capacity of acoustic wind cold compression condensation unit, belong to Building Environment and Equipment Engineering technical field.
Background technology
" second refrigerant calorimeter method " is the representative test method in standard GB/T/T 21363-2008 < < positive displacement Condensing unit > >, air-cooled Condensing units being made a service test.Accompanying drawing 1 is the structural representation of performance testing system of air-cooled compression condensing unit in above-mentioned national standard.On the one hand, air-cooled Condensing units is discharged heat between environment; On the other hand, the refrigerant gas of discharging from air-cooled Condensing units, after throttling, entering calorimeter freezes to the second cold-producing medium, this part refrigerating capacity has been carried out bakingout process by electrical heating coil pipe, from the calorimeter refrigerant gas with certain degree of superheat out, return air-cooled Condensing units, complete refrigeration cycle.Pressure and temp measuring point has been arranged respectively in the outlet of the import and export of air-cooled Condensing units, the import of throttle mechanism and calorimeter, is used for accurate Calculation enthalpy everywhere.The second cold-producing medium in calorimeter, is used the heating of electrical heating coil pipe, and electrical heating power can be measured.
From standard GB/T/T 21363-2008 < < positive displacement Condensing unit > >, the control of the temperature between environment, the pressure of inspiration(Pi) of tested air-cooled Condensing units and suction temperature is this pilot system key point.In order to reach this object, in the second refrigerant calorimeter method performance testing system of air-cooled compression condensing unit of this standard recommendation, air-cooled Condensing units is discharged heat between environment on the one hand, and the evaporation coil of calorimeter freezes to the second cold-producing medium on the other hand.But cold or heat are all the unwelcome secondary products of this pilot system, because they all need to consume outside energy, it are offset.
Chinese invention patent: separated heat pipe type condensing unit performance testing system by using calorimetric method (publication number CN1995950A) adopt the method for separating heat tube will be between experimental enviroment and calorimeter connect, the cold and hot amount of attempting to realize evaporation coil refrigerating capacity in the discharge heat of apoplexy cold compression condensation unit between experimental enviroment and calorimeter offsets.But, by the first law of thermodynamics, can be known that the input work sum of the refrigerating capacity of evaporator and compressor equals the heat exhaust of condenser.That is to say between the heat exhaust of condenser and the refrigerating capacity of evaporator, there is a difference, this difference is exactly the input work of compressor.Therefore,, even if the heat transfer that separating heat tube can well be from high temperature section to low-temperature zone also cannot realize the heat balance in calorimeter, the temperature of calorimeter will be more and more higher.Further, the adopting heat pipes for heat transfer amount that is used for heating the second cold-producing medium cannot accurate-metering, so the refrigerant mass fluxes of air-cooled Condensing units cannot Accurate Determining, the refrigerating capacity of air-cooled Condensing units cannot obtain.
Summary of the invention
For the weak point in existing performance testing system of air-cooled compression condensing unit, the object of this invention is to provide a kind of performance test system for air-cooled Condensing units, this system can realize energy homeostasis, operation energy consumption is low, and can the air-cooled Condensing units refrigerating capacity of Accurate Determining etc. performance parameter.
In order to realize foregoing invention object, the technical scheme that the present invention takes is:
A kind of performance testing system of air-cooled compression condensing unit, comprises air circulation disposal system, refrigerant-cycle systems and energy equilibrium and metering system:
The air-treatment circulation system comprises between experimental enviroment, Condensing units, the air sampling device of blower fan, air-supply static pressure layer, air-treatment unit and adapted thereof; Described air-treatment unit comprises air-supply orifice plate, electrical heating coil pipe, Surface cooling coil and evaporation coil; Described air-supply orifice plate adopts the air supply mode of lower return air, upper air-supply; Adopt power of controlled silicon adjuster control electrical heating coil pipe, make electrical heating 0 ~ 100% adjustable continuously, realize fast the heat balance between experimental enviroment, thereby set up temperature, humidity working condition between experimental enviroment;
Refrigerant-cycle systems, from the refrigerant liquid of tested Condensing units High Temperature High Pressure out, by throttling valve, by throttling, become gas-liquid two-phase fluid, then enter the evaporation coil in calorimeter, by second refrigerant, be heated into superheated vapor and get back to Condensing units, complete whole refrigeration cycle; For the refrigerating capacity of accurate Calculation Condensing units, in the import of the import and export of tested Condensing units, calorimeter outlet and throttling valve, pressure-measuring-point and temperature point are set respectively; Second refrigerant pressure in environment temperature and calorimeter to calorimeter also arranges corresponding measuring point;
Energy equilibrium and metering system, by centrifugal pump, the refrigerating medium in the heating coil in the Surface cooling coil in air-treatment unit and calorimeter (water or bittern) is set up to refrigerating medium circulation, the location arrangements flowmeter of also close centrifugal pump between described centrifugal pump and calorimeter; Before and after calorimeter heating coil, arrange temperature point.
From the first law of thermodynamics, in the refrigeration cycle of the composition such as tested air-cooled Condensing units, the heat exhaust of condenser equals the input work sum of evaporator capacity and compressor.A part of heat in condenser enters Surface cooling coil by refrigerating medium (water or bittern) and is brought in calorimeter, and for heating second refrigerant, the refrigerating capacity in the heat of this part and calorimeter in evaporation coil balances each other.Unnecessary condenser heat is pulled away through the evaporation coil refrigeration in air-treatment unit.
The present invention can be achieved as follows beneficial effect:
(1) energy homeostasis, by centrifugal pump, set up the refrigerating medium circulation of air-treatment unit Surface cooling coil and calorimeter heating coil, a part of heat that tested air-cooled Condensing units is emitted has been offset the refrigerating capacity of calorimeter refrigeration coil, thereby effectively reduces pilot system operation energy consumption.
(2) introduce energy meter instrument and meter, after centrifugal pump, arrange flowmeter, arrange temperature point before and after calorimeter heating coil, the heat that adds of heating coil can accurate-metering, and then can realize the Accurate Determining of tested Condensing units performance parameter.
(3) between experimental enviroment, adopt the Air Distribution of blowing on lower return air orifice plate, between experimental enviroment, wind speed field, temperature field and moisture field are evenly distributed.
Accompanying drawing explanation
Fig. 1 is the structural representation of performance testing system of air-cooled compression condensing unit in standard GB/T/T 21363-2008.
Fig. 2 is the structural representation of performance testing system of air-cooled compression condensing unit of the present invention.
Fig. 3 is the structural representation of orifice plate of blowing in pilot system of the present invention.
Specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 2, this pilot system is comprised of air circulation disposal system, refrigerant-cycle systems and energy equilibrium and three parts of metering system.
In refrigeration system circulation, from the refrigerant liquid of tested air-cooled Condensing units 6 High Temperature High Pressure out, by throttling valve 8, by throttling, become gas-liquid two-phase fluid, then enter the evaporation coil 10 in calorimeter 9, by second refrigerant, be heated into superheated vapor and get back to tested air-cooled Condensing units 6, complete whole refrigeration cycle.For the refrigerating capacity of the air-cooled Condensing units of accurate Calculation, at import and export, the calorimeter 9 of tested air-cooled Condensing units 6, export, the import of throttling valve 8 arranges respectively pressure-measuring-point 7 and temperature point 12.Second refrigerant pressure in environment temperature and the calorimeter of calorimeter 9 also arranges corresponding measuring point.At the rear layout flowmeter 13 of centrifugal pump 14, temperature points are arranged in the heating coil of calorimeter 11 front and back, and the heat that adds of heating coil 11 can accurate-metering, and then can realize the Accurate Determining of tested Condensing units 6 performance parameters.
The air-treatment circulation system mainly by between experimental enviroment 1, air-cooled Condensing units 19 of blow between blower fan 2, experimental enviroment static pressure layer 4, air-treatment unit 18 and adapted thereof, air sampling device 15 etc. form.The lower return air that between whole experimental enviroment, 1 employing orifice plate 5 is blown, the Air Distribution of upper air-supply.In air-treatment unit 18, partial condensation heat enters Surface cooling coil 16 by refrigerating medium (water or bittern) and is brought in calorimeter 9, and this part condenser heat is for the refrigerating capacity of balance calorimeter evaporation coil 10.And the evaporation coil 17 that another part condenser heat enters in air-treatment unit 18 carries out suitably excessive refrigeration processing, then adopt controllable silicon electrical heating coil pipe 3, realize 0 ~ 100% continuously adjustable controlled heating, temperature, humidity working condition between Rapid Establishment experimental enviroment, realize between experimental enviroment 1 heat balance.
In energy equilibrium and metering system, by centrifugal pump 14, the refrigerating medium in the heating coil 11 in the Surface cooling coil in air-treatment unit 18 16 and calorimeter 9 (water or bittern) is set up to refrigerating medium circulation.For the heat that adds of heating coil 11 in Accurate Determining calorimetric device, in energy homeostasis system, arrange flowmeter 13 and temperature point 12.From the first law of thermodynamics, in the refrigeration cycle of tested air-cooled Condensing units 6 compositions such as grade, the heat exhaust of condenser equals the input work sum of evaporator capacity and compressor.A part of heat in condenser enters calorimeter 9 by Surface cooling coil 16, and for heating second refrigerant, the refrigerating capacity in the heat of this part and calorimeter in evaporation coil 10 balances each other.Unnecessary condenser heat freezes and is pulled away through the evaporation coil 17 in air-treatment unit 18.
As shown in Figure 3,20 is the air outlet of air-treatment unit on air-supply orifice plate.
Air-treatment unit 18 provides ambient temperature conditions condition for air-cooled Condensing units, the admission pressure of the air-cooled Condensing units of throttle mechanism control, the intake air temperature of the tested air-cooled Condensing units 6 of electrical heating amount control, so under nominal condition, the value that the difference of the suction inlet refrigerant vapour specific enthalpy of unit and escape hole refrigerant liquid specific enthalpy is multiplied by compressor refrigerant mass rate is the refrigerating capacity of tested air-cooled Condensing units 6.
The present invention has inherited the stability of second refrigerant calorimeter method performance testing system of air-cooled compression condensing unit, by centrifugal pump 14, the refrigerating medium in the heating coil 10 in the Surface cooling coil in air-treatment unit 18 16 and calorimeter 9 (water or bittern) is set up to refrigerating medium circulation, recovery section condenser heat is used for heating second refrigerant, realize system capacity homeostasis, reduce pilot system operation energy consumption, meet people stable to air-cooled Condensing units (the particularly above unit of 30KW) performance test system, the requirement of energy-saving run, be expected to produce huge social benefit.
Claims (2)
1. a performance testing system of air-cooled compression condensing unit, is characterized in that, described pilot system comprises air circulation disposal system, refrigerant-cycle systems and energy equilibrium and metering system:
Described air circulation disposal system comprises between experimental enviroment, Condensing units, the air sampling device of blower fan, air-supply static pressure layer, air-treatment unit and adapted thereof; Described air-treatment unit comprises air-supply orifice plate, electrical heating coil pipe, Surface cooling coil and evaporation coil; Described air-supply orifice plate adopts the air supply mode of lower return air, upper air-supply; Described electrical heating coil pipe adopts the control of power of controlled silicon adjuster; Air passes through Surface cooling coil, evaporation coil and electrical heating coil pipe successively, then via blower fan, enters air-supply static pressure layer;
Described refrigerant-cycle systems, from the refrigerant liquid of tested Condensing units High Temperature High Pressure out, by throttling valve, by throttling, become gas-liquid two-phase fluid, then enter the evaporation coil in calorimeter, by second refrigerant, be heated into superheated vapor and get back to tested Condensing units, complete whole refrigeration cycle; Import at the import and export of tested Condensing units, calorimeter outlet and throttling valve arranges respectively pressure-measuring-point and temperature point; Second refrigerant pressure in environment temperature and calorimeter to described calorimeter also arranges corresponding measuring point;
Described energy equilibrium and metering system, by centrifugal pump, the refrigerating medium in the Surface cooling coil in described air-treatment unit and the heating coil in calorimeter is set up to refrigerating medium circulation, the location arrangements flowmeter of also close centrifugal pump between described centrifugal pump and calorimeter; Before and after described calorimeter heating coil, arrange temperature point.
2. a kind of performance testing system of air-cooled compression condensing unit according to claim 1, is characterized in that, described refrigerating medium adopts water or bittern.
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| CN201110182625.0A CN102269661B (en) | 2011-07-01 | 2011-07-01 | Testing system for performance of air-cooled compression condensing unit |
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| CN102539191B (en) * | 2012-01-06 | 2014-07-02 | 合肥通用机械研究院 | Air-cooling cold (hot) water unit experiment device with surface-cooling coil pipe regulation function |
| CN104155136A (en) * | 2014-08-21 | 2014-11-19 | 重庆大学 | Air cooler refrigerating capacity measuring apparatus |
| CN104807665B (en) * | 2015-05-15 | 2017-04-26 | 天津市医疗器械质量监督检验中心 | Humidifying capability testing device for humidifier |
| CN107271208B (en) * | 2017-06-14 | 2019-04-09 | 合肥通用机械研究院有限公司 | Evaporative condenser performance test apparatus |
| CN113847963B (en) * | 2021-08-06 | 2023-10-13 | 合肥通用机械研究院有限公司 | Mass flow calculation method of refrigeration compressor performance test device |
| CN115859867B (en) * | 2023-02-27 | 2023-05-30 | 中国飞机强度研究所 | Method for calculating refrigerant charge amount of laboratory refrigeration system for aircraft test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS63289277A (en) * | 1987-05-20 | 1988-11-25 | Toshiba Corp | Tester for refrigeration compressor |
| KR20050075803A (en) * | 2004-01-16 | 2005-07-22 | 삼성전자주식회사 | Performance testing device of refrigeration cycle |
| WO2006039580A1 (en) * | 2004-09-30 | 2006-04-13 | Carrier Corporation | Refrigeration system and method with controllable heat recovery |
| CN2816786Y (en) * | 2005-09-02 | 2006-09-13 | 合肥通用环境控制技术有限责任公司 | Novel device for detecting performance of refrigerating compression-condensation machine group |
| CN1995950A (en) * | 2006-10-27 | 2007-07-11 | 上海海事大学 | Separated heat pipe type condensing unit performance testing system by using calorimetric method |
| CN101581294B (en) * | 2009-06-12 | 2011-03-30 | 南京师范大学 | Condensation heat-recovering type performance test system for refrigeration compressors |
| CN101975677A (en) * | 2010-10-13 | 2011-02-16 | 上海海普环境设备有限公司 | Air conditioner performance test device |
| CN202119637U (en) * | 2011-07-01 | 2012-01-18 | 南京师范大学 | Performance testing system of air-cooled compression condensing unit |
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Inventor after: Zhang Zhongbin Inventor after: Huang Hu Inventor after: Shen Yu Inventor before: Zhang Zhongbin Inventor before: Huang Hu Inventor before: Jiang Qing Inventor before: Shao Shenjin Inventor before: Chen Zemin |
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Effective date of registration: 20160704 Address after: Yuen Road Qixia District of Nanjing City, Jiangsu Province, No. 1 210046 Patentee after: NANJING NORMAL University Address before: Yuen Road Qixia District of Nanjing City, Jiangsu Province, No. 1 210046 Patentee before: Nanjing Normal University Patentee before: NANJING CANATAL DATA-CENTRE ENVIRONMENTAL TECH Co.,Ltd. Patentee before: DANYANG SUKE AIR ENERGY RES CT Co.,Ltd. |
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