CN102269661A - 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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- CN102269661A CN102269661A CN2011101826250A CN201110182625A CN102269661A CN 102269661 A CN102269661 A CN 102269661A CN 2011101826250 A CN2011101826250 A CN 2011101826250A CN 201110182625 A CN201110182625 A CN 201110182625A CN 102269661 A CN102269661 A CN 102269661A
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- 230000006835 compression Effects 0.000 title abstract description 13
- 238000007906 compression Methods 0.000 title abstract description 13
- 238000012360 testing method Methods 0.000 title abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims abstract description 14
- 230000008020 evaporation Effects 0.000 claims abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000011056 performance test Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 8
- 241001131796 Botaurus stellaris Species 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 206010008190 Cerebrovascular accident Diseases 0.000 description 3
- 208000006011 Stroke Diseases 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
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 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 air-cooled Condensing units performance test system, be used for the performance parameters such as refrigerating capacity of acoustic wind cold compression condensation unit, belong to the Building Environment and Equipment Engineering technical field.
Background technology
" the second cold-producing medium calorimetric device method " is the representative test method that among standard GB/T 21363-2008 " positive displacement refrigerant compression condensation unit " air-cooled Condensing units is made a service test.Accompanying drawing 1 is the structural representation of above-mentioned national standard apoplexy cold compression condensation unit performance test system.On the one hand, air-cooled Condensing units is discharged heat between environment; On the other hand, the refrigerant gas of from air-cooled Condensing units, discharging, through entering calorimeter after the throttling second kind of cold-producing medium freezed, this part refrigerating capacity has been carried out bakingout process by the electrical heating coil pipe, the refrigerant gas that comes out from calorimeter with certain degree of superheat, return air-cooled Condensing units, finish refrigeration cycle.The pressure and temp measuring point has been arranged in the outlet of the import and export of air-cooled Condensing units, the import of throttle mechanism and calorimeter respectively, is used for accurate Calculation enthalpy everywhere.Second kind of cold-producing medium in the calorimeter uses the heating of electrical heating coil pipe, and electrical heating power can be measured.
By standard GB/T 21363-2008 " positive displacement refrigerant compression condensation unit " as can be known, 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 purpose, in the air-cooled Condensing units performance test system of the second cold-producing medium calorimetric device method 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 second kind of cold-producing medium on the other hand.Yet, cold still be heat all be the unwelcome secondary product of this pilot system because they all need to consume outside energy it is 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, attempt to realize that the cold and hot amount of evaporation coil refrigerating capacity in the discharge heat of apoplexy cold compression condensation unit between experimental enviroment and the calorimeter offsets.Yet, can know that by the first law of thermodynamics input work sum of the refrigerating capacity of evaporator and compressor equals the heat exhaust of condenser.That is to say that a difference is arranged between the heat exhaust of condenser and the refrigerating capacity of evaporator, this difference is exactly the input work of compressor.Therefore, even separating heat tube can well also can't be realized the heat balance in the calorimeter from the heat transfer of high temperature section to low-temperature zone, the temperature of calorimeter will be more and more higher.Further, the adopting heat pipes for heat transfer amount that is used for heating second kind of cold-producing medium can't accurately be measured, so the refrigerant mass fluxes of air-cooled Condensing units can't accurately be measured, the refrigerating capacity of air-cooled Condensing units can't obtain.
Summary of the invention
At the weak point in the existing air-cooled Condensing units performance test system, the purpose of this invention is to provide a kind of performance test system that is used for air-cooled Condensing units, this system can realize the energy homeostasis, operation energy consumption is low, and accurate performance parameter such as acoustic wind cold compression condensation unit refrigerating capacity.
In order to realize the foregoing invention purpose, the technical scheme that the present invention takes is:
A kind of air-cooled Condensing units performance test system 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, table cooling coil and evaporation coil; Described air-supply orifice plate adopts following return air, goes up the air supply mode of air-supply; Adopt controllable silicon power regulator control electrical heating coil pipe, make electrical heating 0 ~ 100% adjustable continuously, realize the heat balance between experimental enviroment fast, thereby set up temperature, humidity working condition between experimental enviroment;
Refrigerant-cycle systems, the refrigerant liquid of the High Temperature High Pressure of coming out from tested Condensing units, become gas-liquid two-phase fluid by throttling valve by throttling, enter the evaporation coil in the calorimeter then, be heated into superheated vapor by second cold-producing medium and get back to Condensing units, finish whole refrigeration cycle; For the refrigerating capacity of accurate Calculation Condensing units, pressure-measuring-point and temperature point are set respectively in the import of the import and export of tested Condensing units, calorimeter outlet and throttling valve; The environment temperature of calorimeter and second refrigerant pressure in the calorimeter also are provided with corresponding measuring point;
Energy equilibrium and metering system, by centrifugal pump table cooling coil in the air-treatment unit and the refrigerating medium (water or bittern) in the heating coil in the calorimeter are set up the refrigerating medium circulation, the location arrangements flowmeter of also close centrifugal pump between described centrifugal pump and calorimeter; Arrange temperature point before and after the calorimeter heating coil.
By the first law of thermodynamics as can be known, in the refrigeration cycle that tested air-cooled Condensing units etc. are formed, the heat exhaust of condenser equals the input work sum of evaporator capacity and compressor.A part of heat in the condenser enters the table cooling coil by refrigerating medium (water or bittern) and is brought in the calorimeter, is used to heat second cold-producing medium, and the refrigerating capacity in heat of this part and the calorimeter in the evaporation coil balances each other.Unnecessary condenser heat is pulled away through the refrigeration of the evaporation coil in the air-treatment unit.
The present invention can be achieved as follows beneficial effect:
(1) energy homeostasis, promptly set up the refrigerating medium circulation of air-treatment unit table cooling coil and calorimeter heating coil by centrifugal pump, 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 the pilot system operation energy consumption.
(2) introduce the energy meter instrument and meter, promptly behind centrifugal pump, arrange flowmeter, arrange temperature point before and after the calorimeter heating coil, the adding heat and can accurately measure of heating coil, and then can realize the accurate mensuration of tested Condensing units performance parameter.
(3) the air current composition form of blowing on the return air orifice plate under the employing between experimental enviroment, wind speed field, temperature field and moisture field are evenly distributed between experimental enviroment.
Description of drawings
Fig. 1 is the structural representation of standard GB/T 21363-2008 apoplexy cold compression condensation unit performance test system.
Fig. 2 is the structural representation of the air-cooled Condensing units performance test system of the present invention.
Fig. 3 is the structural representation of air-supply orifice plate in the 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 made up of air circulation disposal system, refrigerant-cycle systems and energy equilibrium and three parts of metering system.
In the refrigeration system circulation, the refrigerant liquid of the High Temperature High Pressure of coming out from tested air-cooled Condensing units 6, become gas-liquid two-phase fluid by throttling valve 8 by throttling, enter the evaporation coil 10 in the calorimeter 9 then, be heated into superheated vapor by second cold-producing medium and get back to tested air-cooled Condensing units 6, finish whole refrigeration cycle.For the refrigerating capacity of the air-cooled Condensing units of accurate Calculation, pressure-measuring-point 7 and temperature point 12 are set respectively in the import of the import and export of tested air-cooled Condensing units 6, calorimeter 9 outlets, throttling valve 8.Second refrigerant pressure in the environment temperature of calorimeter 9 and the calorimeter also is provided with corresponding measuring point.Arrange flowmeters 13 in centrifugal pump 14 back, temperature point is arranged in heating coil 11 front and back of calorimeter, the adding heat and can accurately measure of heating coil 11, and then can realize the accurate mensuration of tested Condensing units 6 performance parameters.
The air-treatment circulation system mainly is made up of the air-cooled Condensing units 19 of air-supply static pressure layer 4, air-treatment unit 18 and adapted thereof between experimental enviroment 1, between blower fan 2, experimental enviroment, air sampling device 15 etc.1 adopts the following return air of orifice plate 5 air-supplies, the air current composition form of upward blowing between the whole test environment.In the air-treatment unit 18, the partial condensation heat enters table cooling coil 16 by refrigerating medium (water or bittern) and is brought in the calorimeter 9, and this part condenser heat is used for the refrigerating capacity of balance calorimeter evaporation coil 10.And the evaporation coil 17 that another part condenser heat enters in the air-treatment unit 18 carries out suitably excessive refrigeration processing, adopt controllable silicon electrical heating coil pipe 3 then, realize 0 ~ 100% continuously adjustable controlled heating, set up temperature, humidity working condition between experimental enviroment fast, 1 heat balance between the realization experimental enviroment.
In energy equilibrium and the metering system, table cooling coil 16 in the air-treatment unit 18 and the refrigerating medium (water or bittern) in the heating coil 11 in the calorimeter 9 are set up the refrigerating medium circulation by centrifugal pump 14.For the heat that adds of heating coil 11 in the hot device of accurately measured quantity, arrange flowmeter 13 and temperature point 12 in the energy homeostasis system.By the first law of thermodynamics as can be known, in the refrigeration cycle that tested air-cooled Condensing units 6 grades are formed, the heat exhaust of condenser equals the input work sum of evaporator capacity and compressor.A part of heat in the condenser enters calorimeter 9 by table cooling coil 16, is used to heat second cold-producing medium, and the refrigerating capacity in heat of this part and the calorimeter in the evaporation coil 10 balances each other.Unnecessary condenser heat is pulled away through 17 refrigeration of the evaporation coil in the air-treatment unit 18.
As shown in Figure 3,20 are the air outlet of air-treatment unit on the air-supply orifice plate.
Air-treatment unit 18 provides the ambient temperature conditions condition for air-cooled Condensing units, throttle mechanism is controlled the admission pressure of air-cooled Condensing units, the electrical heating amount is controlled the intake air temperature of tested air-cooled Condensing units 6, 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 multiply by the compressor refrigerant mass rate is the refrigerating capacity of tested air-cooled Condensing units 6.
The present invention has inherited the stability of the air-cooled Condensing units performance test system of the second cold-producing medium calorimetric device method, by centrifugal pump 14 table cooling coil 16 in the air-treatment unit 18 and the refrigerating medium (water or bittern) in the heating coil 10 in the calorimeter 9 are set up the refrigerating medium circulation, the recovery section condenser heat is used to heat second cold-producing medium, realize the system capacity homeostasis, reduce the pilot system operation energy consumption, it is stable to air-cooled Condensing units (the particularly above unit of 30KW) performance test system to satisfy people, the requirement of energy-saving run is expected to produce the huge social benefit.
Claims (2)
1. air-cooled Condensing units performance test system is characterized in that described pilot system comprises air circulation disposal system, refrigerant-cycle systems and energy equilibrium and metering system:
The described 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, table cooling coil and evaporation coil; Described air-supply orifice plate adopts following return air, goes up the air supply mode of air-supply; Described electrical heating coil pipe adopts the control of controllable silicon power regulator;
Described refrigerant-cycle systems, the refrigerant liquid of the High Temperature High Pressure of coming out from tested Condensing units, become gas-liquid two-phase fluid by throttling valve by throttling, enter the evaporation coil in the calorimeter then, be heated into superheated vapor by second cold-producing medium and get back to tested Condensing units, finish whole refrigeration cycle; Import at the import and export of tested Condensing units, calorimeter outlet and throttling valve is provided with pressure-measuring-point and temperature point respectively; The environment temperature of described calorimeter and second refrigerant pressure in the calorimeter also are provided with corresponding measuring point;
Described energy equilibrium and metering system, by centrifugal pump table cooling coil in the described air-treatment unit and the refrigerating medium in the heating coil in the calorimeter are set up the refrigerating medium circulation, the location arrangements flowmeter of also close centrifugal pump between described centrifugal pump and calorimeter; Arrange temperature point before and after the described calorimeter heating coil.
2. a kind of air-cooled Condensing units performance test system according to claim 1 is characterized in that, described refrigerating medium adopts water or bittern.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN201110182625.0A CN102269661B (en) | 2011-07-01 | 2011-07-01 | Testing system for performance of air-cooled compression condensing unit |
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| CN102269661B CN102269661B (en) | 2014-04-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539191A (en) * | 2012-01-06 | 2012-07-04 | 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 |
| CN104807665A (en) * | 2015-05-15 | 2015-07-29 | 天津市医疗器械质量监督检验中心 | Humidifying capability testing device for humidifier |
| CN107271208A (en) * | 2017-06-14 | 2017-10-20 | 合肥通用机械研究院 | Evaporative condenser performance test apparatus |
| CN113847963A (en) * | 2021-08-06 | 2021-12-28 | 合肥通用机械研究院有限公司 | Mass flow calculation method of performance testing device of refrigeration compressor |
| CN115859867A (en) * | 2023-02-27 | 2023-03-28 | 中国飞机强度研究所 | Method for calculating refrigerant charge of laboratory refrigeration system for airplane test |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539191A (en) * | 2012-01-06 | 2012-07-04 | 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 |
| CN104807665A (en) * | 2015-05-15 | 2015-07-29 | 天津市医疗器械质量监督检验中心 | Humidifying capability testing device for humidifier |
| CN107271208A (en) * | 2017-06-14 | 2017-10-20 | 合肥通用机械研究院 | Evaporative condenser performance test apparatus |
| 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 |
| CN113847963A (en) * | 2021-08-06 | 2021-12-28 | 合肥通用机械研究院有限公司 | Mass flow calculation method of performance testing device of refrigeration compressor |
| 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 |
| CN115859867A (en) * | 2023-02-27 | 2023-03-28 | 中国飞机强度研究所 | Method for calculating refrigerant charge of laboratory refrigeration system for airplane test |
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| CN102269661B (en) | 2014-04-30 |
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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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