CN108534208A - A kind of big temperature difference heat-exchange system - Google Patents

A kind of big temperature difference heat-exchange system Download PDF

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Publication number
CN108534208A
CN108534208A CN201810459682.0A CN201810459682A CN108534208A CN 108534208 A CN108534208 A CN 108534208A CN 201810459682 A CN201810459682 A CN 201810459682A CN 108534208 A CN108534208 A CN 108534208A
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China
Prior art keywords
heat exchanger
water
heat
magnetic suspension
pipeline
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Pending
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CN201810459682.0A
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Chinese (zh)
Inventor
杨善余
刘磊
尚丰伟
牟宗昊
牛慧
吴世俊
董娟
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Ji'nan Golden Furui Heating Engineering Co Ltd
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Ji'nan Golden Furui Heating Engineering Co Ltd
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Priority to CN201810459682.0A priority Critical patent/CN108534208A/en
Publication of CN108534208A publication Critical patent/CN108534208A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/18Hot-water central heating systems using heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1039Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/10Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1058Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/12Heat pump
    • F24D2200/123Compression type heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00Components of central heating installations excluding heat sources
    • F24D2220/04Sensors
    • F24D2220/042Temperature sensors

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The present invention provides a kind of big temperature difference heat-exchange systems, including magnetic suspension heat pump unit, first-class heat exchanger and secondary heat exchanger, the first-class heat exchanger to be connected by pipeline with secondary heat exchanger, and forms first circulation circuit for return piping with primary net;The first-class heat exchanger is connected with magnetic suspension heat pump unit by pipeline, and forms second circulation circuit for return piping with secondary network, is once cooled down to once netting to supply water, and is heated up for secondary network water supply;The secondary heat exchanger connect to form third circulation loop by pipeline with magnetic suspension heat pump unit, is cooled down twice to once netting water supply.The invention enables the temperature difference of primary net supply and return water temperature to significantly increase, 35% or more the heat conveying capacity of pipe network, not increased in main pipeline network, can improve 30% or more area of heat-supply service;Low grade residual heat, which is recycled, for power plant creates advantage.

Description

A kind of big temperature difference heat-exchange system
Technical field
The present invention relates to Heat Supply Engineering technical field, specifically a kind of big temperature difference heat-exchange system can collect on a large scale Middle heating field application.
Background technology
North city scale rapid development, heating area expand year by year at present, and heating pipe network pressure is very big.City heat supply Water water temperature of pipe network is at 90 DEG C or more, and for return water temperature at 50 DEG C or more, the supply and return water temperature of secondary network is 70/50 DEG C, and one The return water heat load of 50 DEG C of secondary net or more is very big, is not utilized more fully, and the cooling to power plant after power plant is returned to System is also very unfavorable.
On the one hand the utilization rate of urban heating network can be provided by increasing the heat supply temperature difference, make limited heating network supply more Big area of heat-supply service;On the other hand power plant's cooling effect can be improved by reducing return water temperature, effectively promote comprehensive electric generating efficiency, because This improves the heat supply temperature difference by various modes, is always the major technique direction that Heat Supply Engineering technical field is inquired into.
Invention content
Present invention aim to address above-mentioned the deficiencies in the prior art, provide a kind of big temperature difference heat-exchange system.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of big temperature difference heat-exchange system, including magnetic suspension heat pump unit, first-class heat exchanger and secondary heat exchanger, the level-one Heat exchanger is connected with secondary heat exchanger by pipeline, and forms first circulation circuit for return piping with primary net;The level-one Heat exchanger is connected with magnetic suspension heat pump unit by pipeline, and forms second circulation circuit for return piping with secondary network, to one Secondary net water supply is once cooled down, and is heated up for secondary network water supply;The secondary heat exchanger is logical with magnetic suspension heat pump unit It crosses pipeline to connect to form third circulation loop, be cooled down twice to once netting water supply.
Preferably, the heat-exchange system further includes PLC controller, flow control valve, secondary network water circulating pump, secondary cycle Pump and temperature sensor;
The PLC controller to collecting temperature signal and controls flow-rate adjustment valve opening, the frequency conversion control that secondary cycle pumps The working condition of amount processed and magnetic suspension heat pump unit is mounted in the airborne switch board of magnetic suspension heat pump unit;
The flow control valve adjusts thermal energy input quantity to adjust primary net water supply flow, is mounted on primary net and supplies water On pipeline;
The secondary network water circulating pump, to adjust the circulating water flow for entering magnetic suspension heat pump unit, adjusting is effectively changed Heat is mounted on secondary network return piping;
The secondary cycle pump, to adjust the circulating water flow of third circulation loop, adjusts effective heat exchange amount, is mounted on Third circulation loop enters on the pipeline of secondary heat exchanger;
The temperature sensor, to detect water temperature, simultaneously up-delivering signal is separately mounted to secondary network water supply to PLC controller Pipeline, magnetic suspension heat pump unit between pipeline, secondary network return piping, magnetic suspension heat pump unit and first-class heat exchanger and two level On pipeline between heat exchanger;
The flow control valve, temperature sensor, secondary cycle pump and magnetic suspension heat pump unit are electrical with PLC controller Connection.
Preferably, the magnetic suspension heat pump unit includes evaporator and condenser, and first-class heat exchanger passes through pipe with condenser Line is connected;Secondary heat exchanger is connect with evaporator;The evaporator is absorbing the circulating water heating after secondary heat exchanger exchanges heat Amount, and pass to condenser;Condenser makes secondary network return water temperature increase to discharge heat to secondary network return water.
Further, the first-class heat exchanger include the first water inlet of first-class heat exchanger, the first water outlet of first-class heat exchanger, The second water outlet of the second water inlet of first-class heat exchanger and first-class heat exchanger;The secondary heat exchanger include secondary heat exchanger first into The mouth of a river, the second water outlet of the first water outlet of secondary heat exchanger, the second water inlet of secondary heat exchanger and secondary heat exchanger;The level-one The first water inlet of heat exchanger is connect with primary net water supply line, and the first water outlet of first-class heat exchanger is intake with secondary heat exchanger first Mouth is connected by pipeline, and the first water outlet of secondary heat exchanger is connect with primary net return piping.
Further, the condenser includes condenser inlet and condensator outlet, the condenser inlet and secondary network Return piping connects, and condensator outlet connect with the second water inlet of first-class heat exchanger, the second water outlet of first-class heat exchanger with it is secondary Net water supply line connects.
Further, the evaporator includes evaporator and evaporator outlet, and the evaporator outlet is changed with two level The second water inlet of hot device connects, and evaporator is connect with the second water outlet of secondary heat exchanger.
Further, the flow control valve is electric butterfly valve.
Further, the magnetic suspension heat pump unit uses magnetic suspension centrifuge heat pump.
Beneficial effects of the present invention:
(1) temperature difference of primary net supply and return water temperature significantly increases, 35% or more the heat conveying capacity of pipe network, in main pipe In the case of net is not increased, 30% or more area of heat-supply service can be improved.
(2) present invention is that power plant's recycling low grade residual heat creates advantage.Since heat supply network return water temperature is reduced to 30 DEG C hereinafter, can be more prone to recycle plant condenser waste heat, to establish base to improve power plant system efficiency of energy utilization Plinth.
(3) magnetic suspension heat pump unit is mainly by evaporating and condensing two shell and tube exchangers and compressor set at structure is tight It gathers, it is low noise, efficient, the 50% of only traditional lithium bromide chiller volume, it is easily installed, is suitble to the transformation of existing heat exchange station, The device space need not specially be increased, improve the feasibility of heat exchange station reducing energy consumption.
Description of the drawings
A part of attached drawing for constituting the present invention is used to provide further understanding of the present invention.In the accompanying drawings:
Fig. 1 is a kind of annexation figure of big temperature difference heat-exchange system of the present invention.
In figure:1, magnetic suspension heat pump unit;101, evaporator;1011 evaporators;1012, evaporator outlet;102、 Condenser;1021, condenser inlet;1022 condensator outlets;2, first-class heat exchanger;201, the first water inlet of first-class heat exchanger; 202, the first water outlet of first-class heat exchanger;203, the second water inlet of first-class heat exchanger;204, the second water outlet of first-class heat exchanger;3、 Secondary heat exchanger;301, the first water inlet of secondary heat exchanger;302, the first water outlet of secondary heat exchanger;303, secondary heat exchanger Two water inlets;304, the second water outlet of secondary heat exchanger;4, flow control valve;5, secondary network water circulating pump;6, secondary cycle pumps; 7, temperature sensor.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of big temperature difference heat-exchange system, including magnetic suspension heat pump unit 1, first-class heat exchanger 2 and two level are changed Hot device 3, the magnetic suspension heat pump unit 1 include evaporator 101 and condenser 102, the first-class heat exchanger 2 and secondary heat exchanger 3 are connected by pipeline, and form first circulation circuit for return piping with primary net;The first-class heat exchanger 2 and condenser 102 It is connected by pipeline, and second circulation circuit is formed for return piping with secondary network, once cooled down to once netting to supply water, and It heats up for secondary network water supply;The secondary heat exchanger 3 connect to form third circulation loop by pipeline with evaporator 101, It is cooled down twice to once netting water supply.The evaporator 101 to absorb through secondary heat exchanger 3 heat exchange after circulating water heating Amount, and pass to condenser 102;Condenser 102 makes secondary network return water temperature increase to discharge heat to secondary network return water, Heat displacement is carried out after first-class heat exchanger 2, and pipeline water temperature is increased again and is conveyed to user through secondary network water supply line;First Circulation loop, second circulation circuit and third circulation loop work at the same time.
The first-class heat exchanger 2 includes the first water inlet of first-class heat exchanger 201, the first water outlet of first-class heat exchanger 202, one The second water inlet of grade heat exchanger 203 and the second water outlet of first-class heat exchanger 204;The secondary heat exchanger 3 includes secondary heat exchanger First water inlet 301, the first water outlet of secondary heat exchanger 302, the second water inlet of secondary heat exchanger 303 and secondary heat exchanger second Water outlet 304;The first water inlet of the first-class heat exchanger 201 is connect with primary net water supply line, and first-class heat exchanger first is discharged Mouthfuls 202 are connect with the first water inlet of secondary heat exchanger 301 by pipeline, the first water outlet of secondary heat exchanger 302 with once net back Water pipeline connects.
The condenser 102 include condenser inlet 1021 and condensator outlet 1022, the condenser inlet 1021 with Secondary network return piping connects, and condensator outlet 1022 is connect with the second water inlet of first-class heat exchanger 203, first-class heat exchanger second Water outlet 204 is connect with secondary network water supply line.
The evaporator 101 include evaporator 1011 and evaporator outlet 1012, the evaporator outlet 1012 with The second water inlet of secondary heat exchanger 303 connects, and evaporator 1011 is connect with the second water outlet of secondary heat exchanger 304.
The heat-exchange system further includes PLC controller, flow control valve 4, secondary network water circulating pump 5,6 and of secondary cycle pump Temperature sensor 7;
The PLC controller to collecting temperature signal and carries out processing analysis, by a series of special algorithms, control The frequency control amount of 4 aperture of flow control valve processed, secondary cycle pump 6, adjusts the running parameter of magnetic suspension heat pump unit 1, to Under the premise of safe operation, so that system is in optimum Working, keep the high energy efficiency ratio of system, is mounted on magnetic suspension heat pump In the airborne switch board of unit 1;
The flow control valve 4, be electric butterfly valve, according to the supply and return water temperature of secondary network change, by PLC controller come Computing system thermal energy inputs, while adjusting primary net water supply flow, adjusts thermal energy input quantity, is mounted on primary net water supply line On;
The secondary network water circulating pump 5 adjusts the frequency control amount of secondary network water circulating pump 5, and then adjusts and enter magnetcisuspension The circulating water flow of superficial heat pump assembly 1 ensures effective heat exchange amount, is mounted on secondary network return piping, secondary network water circulating pump 5 Frequency control amount be usually quantitative, be adjusted according to secondary network end subscriber service condition or synoptic climate situation;
The secondary cycle pump 6, according to the variation of secondary network supply and return water temperature and primary net water supply flow, will have a direct impact on Circular flow to the leaving water temperature of first-class heat exchanger 2, secondary heat exchanger 3 can also change therewith, by PLC controller calculating come It determines that the frequency control amount of secondary cycle pump 6 ensures effective heat exchange amount to adjust the circulating water flow of third circulation loop, pacifies On the pipeline that third circulation loop enters secondary heat exchanger 3;
The temperature sensor 7, to detect water temperature, simultaneously up-delivering signal is separately mounted to secondary network confession to PLC controller Pipeline, magnetic suspension heat pump unit 1 between water pipeline, secondary network return piping, magnetic suspension heat pump unit 1 and first-class heat exchanger 2 On pipeline between secondary heat exchanger 3;
The flow control valve 4, temperature sensor 7, secondary cycle pump 6 and magnetic suspension heat pump unit 1 are and PLC controller It is electrically connected.
The magnetic suspension heat pump unit 1 uses magnetic suspension centrifuge heat pump, its main feature is that low noise, efficient, structure is tight It gathers, is easily installed, be suitble to the transformation of existing heat exchange station, need not specially increase the device space, improve heat exchange station reducing energy consumption Feasibility.
As shown in Figure 1, the system optimum Working:90 DEG C of primary nets supply water and enter first-class heat exchanger 2 by pipeline, with Heat displacement is carried out into the secondary network return water for being once warming up to 48 DEG C by condenser 102 of first-class heat exchanger 2 simultaneously, once Net supplies water flows out the secondary heat exchanger 3 that 50 DEG C of water enter big flow after heat is replaced, and secondary network return water flows after heat is replaced Go out the secondary network that temperature is 60 DEG C to supply water, secondary network supplies water to user's thermal losses, the secondary network return water of 45 DEG C of outflow;Two level Heat exchanger 3 connect to form third circulation loop by pipeline with evaporator 101, and flowing out 20 DEG C of recirculated waters from evaporator 101 enters Secondary heat exchanger 3 flows out in 30 DEG C of recirculated waters to evaporator 101,101 absorption cycle hydro-thermal of evaporator after heat is replaced Amount passes to condenser 102, and condenser 102 discharges heat and is once warming up to 48 DEG C to 45 DEG C of secondary network return water progress, once Net supply water 50 DEG C of water after the displacement of first-class heat exchanger 2 enter 20 DEG C of recirculated waters that secondary heat exchanger 3 and evaporator 101 flow out into After the displacement of row heat, the primary net return water of 25 DEG C of outflow.
Primary net water supply 50 DEG C of water of outflow after first-class heat exchanger 2 carries out heat displacement contain sizable heat load, directly It connects and flows back to a pipe network unfortunately, the third circulation loop being made up of secondary heat exchanger 3 and evaporator 101, by evaporator It is that magnetic suspension heat pump unit 1 provides low-temperature heat source, while 50 DEG C of water being replaced that 20 DEG C of recirculated waters, which are replaced as 30 DEG C of recirculated waters, in 101 It is flowed out at 25 DEG C of water.30 DEG C of optimum condition, that is, inflow temperature of evaporator 101,20 DEG C of leaving water temperature, COP (Energy Efficiency Ratio) can be with Reach 8.2, count the power that secondary cycle pump 6 and secondary network water circulating pump 5 consume in, system energy efficiency can reach 7.5, entirely change The efficiency of hot systems can reach 87%.According to the calculation of price of using energy source gradient, reuptaked in 2 return water of first-class heat exchanger Heat is utilized, and has very high economic value.
The load of heat exchange end, that is, secondary network is continually changing, and PLC controller mainly passes through secondary network supply backwater temperature difference It is calculated, is worked according to control flow control valve 4 is calculated, the adjusting of primary net water supply flow makes system reach thermal balance; The adjusting of primary net water supply flow will have a direct impact on the leaving water temperature of first-class heat exchanger 2, and the circular flow of secondary heat exchanger 3 also can Change therewith, system must determine the frequency control amount of secondary cycle pump 6, magnetic suspension heat pump machine by PLC controller calculating The inside of group 1 can be also adjusted by PLC controller, and self-balancing adjusting is carried out between each variable, makes magnetic suspension heat pump machine Group 1 keeps optimum Working;PLC controller adjusts flow control valve 4, controls primary net by a series of special algorithms 3 flow of water supply flow and secondary heat exchanger adjusts 1 running parameter of magnetic suspension heat pump unit, thus under the premise of safe operation, So that system is in optimum Working, keeps the high energy efficiency ratio of system.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc. With replacing, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this Within the protection domain of invention.

Claims (8)

1. a kind of big temperature difference heat-exchange system, including magnetic suspension heat pump unit (1), first-class heat exchanger (2) and secondary heat exchanger (3), The first-class heat exchanger (2) is connected with secondary heat exchanger (3) by pipeline, and forms first circulation for return piping with primary net Circuit;The first-class heat exchanger (2) is connected with magnetic suspension heat pump unit (1) by pipeline, and linear for return pipe with secondary network At second circulation circuit, once cooled down to once netting to supply water, and is heated up for secondary network water supply;The secondary heat exchanger (3) it connect to form third circulation loop by pipeline with magnetic suspension heat pump unit (1), be cooled down twice to once netting water supply.
2. a kind of big temperature difference heat-exchange system according to claim 1, it is characterised in that:The heat-exchange system further includes PLC Controller, flow control valve (4), secondary network water circulating pump (5), secondary cycle pump (6) and temperature sensor (7);
The PLC controller, to collecting temperature signal and control flow control valve (4) aperture, secondary cycle pump (6) frequency conversion The working condition of controlled quentity controlled variable and magnetic suspension heat pump unit (1) is mounted in the airborne switch board of magnetic suspension heat pump unit (1);
The flow control valve (4) adjusts thermal energy input quantity to adjust primary net water supply flow, is mounted on primary net and supplies water On pipeline;
The secondary network water circulating pump (5) is adjusted effective to adjust the circulating water flow for entering magnetic suspension heat pump unit (1) Heat exchange amount is mounted on secondary network return piping;
The secondary cycle pump (6) adjusts effective heat exchange amount, is mounted on to adjust the circulating water flow of third circulation loop Third circulation loop enters on the pipeline of secondary heat exchanger (3);
The temperature sensor (7), to detect water temperature, simultaneously up-delivering signal is separately mounted to secondary network water supply to PLC controller Pipeline, magnetic suspension heat pump unit between pipeline, secondary network return piping, magnetic suspension heat pump unit (1) and first-class heat exchanger (2) (1) on the pipeline between secondary heat exchanger (3);
The flow control valve (4), temperature sensor (7), secondary cycle pump (6) and magnetic suspension heat pump unit (1) are controlled with PLC Device processed is electrically connected.
3. a kind of big temperature difference heat-exchange system according to claim 1, it is characterised in that:The magnetic suspension heat pump unit (1) Including evaporator (101) and condenser (102), first-class heat exchanger (2) is connected with condenser (102) by pipeline;Secondary heat exchange Device (3) is connect with evaporator (101);The evaporator (101) to absorb through secondary heat exchanger (3) heat exchange after circulating water heating Amount, and pass to condenser (102);Condenser (102) makes secondary network return water temperature to discharge heat to secondary network return water It increases.
4. a kind of big temperature difference heat-exchange system according to claim 3, it is characterised in that:The first-class heat exchanger (2) includes The first water inlet of first-class heat exchanger (201), the first water outlet of first-class heat exchanger (202), the second water inlet of first-class heat exchanger (203) With the second water outlet of first-class heat exchanger (204);The secondary heat exchanger (3) includes the first water inlet of secondary heat exchanger (301), two Grade the first water outlet of heat exchanger (302), the second water inlet of secondary heat exchanger (303) and the second water outlet of secondary heat exchanger (304); The first water inlet of the first-class heat exchanger (201) is connect with primary net water supply line, the first water outlet of first-class heat exchanger (202) with The first water inlet of secondary heat exchanger (301) is connected by pipeline, the first water outlet of secondary heat exchanger (302) and primary net return pipe Line connects.
5. a kind of big temperature difference heat-exchange system according to claim 4, it is characterised in that:The condenser (102) includes cold Condenser import (1021) and condensator outlet (1022), the condenser inlet (1021) connect with secondary network return piping, cold Condenser outlet (1022) connect with the second water inlet of first-class heat exchanger (203), the second water outlet of first-class heat exchanger (204) with it is secondary Net water supply line connects.
6. a kind of big temperature difference heat-exchange system according to claim 4, it is characterised in that:The evaporator (101) includes steaming Send out device import (1011) and evaporator outlet (1012), the evaporator outlet (1012) and the second water inlet of secondary heat exchanger (303) it connects, evaporator (1011) is connect with the second water outlet of secondary heat exchanger (304).
7. a kind of big temperature difference heat-exchange system according to claim 2, it is characterised in that:The flow control valve (4) is electricity Dynamic butterfly valve.
8. a kind of big temperature difference heat-exchange system according to claim 6, it is characterised in that:The magnetic suspension heat pump unit (1) Using magnetic suspension centrifuge heat pump.
CN201810459682.0A 2018-05-15 2018-05-15 A kind of big temperature difference heat-exchange system Pending CN108534208A (en)

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Cited By (7)

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CN109708180A (en) * 2019-02-21 2019-05-03 苏州必信空调有限公司 Its heat-exchange system and application its thermoelectric heating system of a kind of big temperature difference temperature rise heat exchanger and application
CN110822754A (en) * 2019-12-13 2020-02-21 苏州必信空调有限公司 Distributed heating system
WO2020103271A1 (en) * 2018-11-20 2020-05-28 青岛海尔空调电子有限公司 Heat pump system
CN114608052A (en) * 2022-02-25 2022-06-10 北京市京海换热设备制造有限责任公司 Combined heat and power distributed heating plant device
CN114659150A (en) * 2022-04-02 2022-06-24 陈连祥 Overline large-temperature-difference residual and waste heat energy central heating system
CN115031280A (en) * 2022-06-10 2022-09-09 丁丰 Multi-path large-temperature-difference low-energy-consumption heat supply and heat supply method thereof
CN115218252A (en) * 2022-07-11 2022-10-21 朴瑞(北京)企业管理有限公司 Intelligent efficient heat exchange system for urban energy-saving heat supply

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