CN103808524A - Water-water/water-glycol type water source heat pump assembly performance testing device - Google Patents
Water-water/water-glycol type water source heat pump assembly performance testing device Download PDFInfo
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- CN103808524A CN103808524A CN201410057880.6A CN201410057880A CN103808524A CN 103808524 A CN103808524 A CN 103808524A CN 201410057880 A CN201410057880 A CN 201410057880A CN 103808524 A CN103808524 A CN 103808524A
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Abstract
The invention discloses a water-water/water-glycol type water source heat pump assembly performance testing device. The w water-water/water-glycol type water source heat pump assembly performance testing device is of a pipe water mixing/dividing wall heat exchanging structural design and comprises a cooling water system, a coolant water system, a pipe water mixing/dividing wall heat exchanging system, a heat dissipation system and a glycol solution storage system. According to the water-water/water-glycol type water source heat pump assembly performance testing device, test determination and calculation on main tests on the coolant water side is performed through liquid coolant; test determination and calculation on verification tests on the cooling water side is performed through an assembly heat balancing method, so that the performance parameters such as the refrigerating capacity, the refrigerating power consumption and the refrigerating energy efficiency ratio and the important technical parameters such as temperature and flow of the water-water/water-glycol type water source heat pump assembly can be measured accurately, and importable means can be provided for performance testing and development research of the water-water/water-glycol type water source heat pump assembly. The water-water/water-glycol type water source heat pump assembly performance testing device has the advantages of being energy-saving in operation, accurate in testing results and capable of achieving all-weather all-condition testing.
Description
Technical field
The invention belongs to water source heat pump units test unit field, be specifically related to a kind of water-water type/water-ethylene glycol type water source heat pump units performance testing device.
Background technology
Water-water type/water-ethylene glycol type water source heat pump units performance testing device is a kind of test unit that performance test under test operation condition environment can be provided for water-water type/water-ethylene glycol type water source heat pump units, refrigerating capacity that can Accurate Determining water-water type/water-ethylene glycol type water source heat pump units, performance parameter and the evaporator Inlet and outlet water temperature such as refrigeration consumed power and refrigeration efficiency compare, condenser Inlet and outlet water temperature, evaporator inlet-outlet pressure reduction, condenser inlet outlet pressure differential, evaporator water flow, the technical parameters such as Water in Condenser flow, for performance test and the development research of water-water type/water-ethylene glycol type water source heat pump units provide important means.
Chinese patent CN102706679A discloses a kind of water-cooled handpiece Water Chilling Units performance test constant temperature water tank, provide a kind of have separation but trizonal, water-cooled handpiece Water Chilling Units performance test system constant temperature water tank that constant water inlet working condition can be provided for water-cooled handpiece Water Chilling Units performance test completely independently not comprises casing, spill cavity, longitudinal baffle and lateral partitions.Casing is divided into thermal release district, combined balance system district and thermostatic control district by longitudinal baffle and lateral partitions, is provided with liquid level gauge, temp probe and electric heater unit etc.Adopt the water tank of this constant temperature water tank design to be watered the not only complicated operation of water-water type water source heat pump units performance testing device of structural formula, equipment operation regulates slowly, can't meet the outlet chilled water water temperature of water-water type water source heat pump units lower than the test working condition requirement of chilled water water temperature.
Chinese patent CN102288421A discloses a kind of variable-volume water chiller set test device, although this test unit has met the import chilled water water temperature of tested unit lower than the test working condition requirement of chilled water water temperature while being used for the performance test of water-water type water source heat pump units, but in the time that summer temp is higher or move some special operation conditions (cooling water outlet temperature is lower), just can not meet test working condition requirement, water temperature test specification is narrow and small, can not meet the test condition of round-the-clock full operating mode, this test unit only can be used for common water-water type water source heat pump units performance test simultaneously, can't meet the water-ethylene glycol type water source heat pump units performance test of eth.glycol circulation.
Existing water-water type/water-ethylene glycol type water source heat pump units performance testing device generally only has a tested unit that station is installed, and unit adapter type is single.
Summary of the invention
Technical matters: the invention provides that a kind of capacity usage ratio is high, to have expanded accommodation, the operating mode of test unit to refrigerating medium working medium steadily reliable, test result accurate water-water type/water-ethylene glycol type water source heat pump units performance testing device.
Technical scheme: water of the present invention-water type/water-ethylene glycol type water source heat pump units performance testing device, comprise be watered/partition of cooling water system, the pipeline heat-exchange system, chilled-water system and the ethylene glycol solution storage system that connect successively, and the heat dissipation system being connected with cooling water system.
Cooling water system comprises the first threeway, the second threeway, the 3rd threeway, the 4th threeway, the first water pump and the first flow meter that connect successively, and the import of the first water pump is connected with the 4th threeway, and outlet is connected with first flow meter.
Chilled-water system comprises the 5th threeway, the 6th threeway, the 7th threeway, the 8th threeway, the second water pump, the second flowmeter that connect successively, and the expansion tank being connected with the 8th threeway, the import of the second water pump is connected with the 8th threeway, and outlet is connected with the second flowmeter.
Be watered/partition of pipeline heat-exchange system comprises the 3rd water pump, ethylene glycol plate type heat exchanger, the 4th water pump.The import of the 3rd water pump is connected with the second threeway, the 3rd water delivery side of pump is divided into two-way, one tunnel is connected with the cooling water inlet end of ethylene glycol plate type heat exchanger, another Lu Yu seven threeways connect, the chilled water endpiece of ethylene glycol plate type heat exchanger is connected with the 6th threeway, the import of the 4th water pump is connected with the 5th threeway, the 4th water delivery side of pump is divided into two-way, one tunnel is connected with the 3rd threeway, another road is connected with the chilled water entrance point of ethylene glycol plate type heat exchanger, and the coolant outlet end of ethylene glycol plate type heat exchanger is also connected with the 3rd threeway.
The water inlet end of heat dissipation system is connected with the first threeway, and water side is connected with the 4th threeway; Recovery/supplementary the end of ethylene glycol solution storage system is connected on the pipeline between the 8th threeway and the second water pump.
In apparatus of the present invention, heat dissipation system comprises cooling tower, the 5th water pump, heat interchanger, wind-cooled cold-water unit, constant temperature water tank, the 6th water pump and the 7th water pump, the cooling water inlet end of heat interchanger is the water inlet end of heat dissipation system, be connected with the first threeway, the cooling tower water endpiece of heat interchanger is connected with cooling tower backwater end, the water side of cooling tower is connected with the 5th unit fixed on water pump suction, the 5th exit of pump is connected with the cooling tower water entrance point of heat interchanger, the coolant outlet end of heat interchanger is connected with the top water inlet end of constant temperature water tank, water side, constant temperature water tank bottom is connected with the 6th unit fixed on water pump suction, the 6th exit of pump is connected with the entrance point of wind-cooled cold-water unit, the endpiece of wind-cooled cold-water unit is connected with the bottom water inlet end of constant temperature water tank, another endpiece of constant temperature water tank bottom is connected with the 7th unit fixed on water pump suction, the 7th exit of pump is the water side of heat dissipation system, be connected with the 4th threeway.
In apparatus of the present invention, ethylene glycol solution storage system comprises the first valve, the second valve, the 8th water pump, the 3rd valve, the 4th valve, the ethylene glycol storage box that connect successively, also comprises the 5th valve, the 6th valve and the 7th valve.One end of the first valve is connected with the second valve, and the other end is the recovery/supplementary end of ethylene glycol solution storage system, and the import of the 8th water pump is connected with the second valve, and outlet is connected with the 3rd valve.On pipeline between the first valve and the second valve, be also communicated with ethylene glycol charging line, the 5th valve is arranged on ethylene glycol charging line, one end of the 6th valve is connected on the pipeline between the 3rd valve and the 8th exit of pump, and the other end is connected on the pipeline between the first valve and the second valve.One end of the 7th valve is connected on the pipeline between the 3rd valve and the 4th valve, and the other end is connected on the pipeline between the 8th unit fixed on water pump suction and the second valve.
In a preferred version of apparatus of the present invention, in cooling water system, be provided with bypass line, on bypass line, be provided with valve, one end of bypass line is connected on the pipeline between the first exit of pump and first flow meter, and the other end is connected on the pipeline between the 3rd threeway and the 4th threeway.In chilled-water system, be also provided with bypass line, be provided with valve on bypass line, one end of bypass line is connected on the pipeline between the second exit of pump and the second flowmeter, and the other end is connected on the pipeline between the 7th threeway and the 8th threeway.
In apparatus of the present invention, the water side of cooling water system, is also that the water side of first flow meter is connected with tested unit condenser side, the water side of chilled-water system, and also the water side of the second flowmeter is connected with tested unit vaporizer side.
In apparatus of the present invention, the unify be watered/partition heat-exchange system that between chilled-water system, pipeline is set of cooling water system, for water-water type water source heat pump units performance test of common water ballast refrigerant cycle, water in cooling water pipeline is introduced chilled water pipeline by pipeline, directly mingle blending heat exchange between chilled water and chilled water, mixed part chilled water turns back to cooling water pipeline again by pipeline; For the water-ethylene glycol type water source heat pump units performance test of eth.glycol circulation, in tested unit condenser, in chilled water and evaporator, ethylene glycol solution, by the heat exchange of ethylene glycol plate type heat exchanger partition, is realized the exchange heat between chilled water and ethylene glycol solution.
Known according to the first law of thermodynamics, the heating capacity of water-water type/water-ethylene glycol type water source heat pump units cooling water side equals the refrigerating capacity of water-water type/water-ethylene glycol type water source heat pump units chilled water side and the input work sum of compressor, the heat of tested unit condenser side generation and the cold of vaporizer side generation are balanced each other, and it is so large that the energy of the external low-temperature receiver consumption of needs is only equivalent to compressor input work.The heat of the mechanical equivalent of compressor input work scatters and disappears by dispel the heat water route and chilled water heat dissipation water route of cooling tower, the heat radiation of chilled water heat dissipation water route and cooling tower is carried out wall-type heat exchange by heat interchanger between water route, balances each other thereby realize the cold that heat that tested water-water type/water-ethylene glycol type water source heat pump units condenser side produces and vaporizer side produce.This proving installation has also increased the low-temperature receiver of two wind-cooled cold-water units as constant temperature water tank, opens wind-cooled cold-water unit and just can meet test condition round-the-clock, full operating mode.
Beneficial effect: the present invention compared with prior art, has the following advantages:
(1) capacity usage ratio is high, has reduced the operating cost of proving installation, has improved adapter efficiency and testing efficiency.
This proving installation can realize the heat of tested unit condenser side generation and the cold of vaporizer side generation balances each other, chilled water and chilled water adopt the direct mingle blending heat exchange of pipeline or the heat exchange of ethylene glycol plate type heat exchanger partition, take full advantage of the cold and hot amount that tested unit produces, capacity usage ratio is high, the performance testing device that is watered formula structural design compared with water tank does not need to arrange special agitating device and electric heater unit, reduce testing cost, greatly improved the economy of water-water type/water-ethylene glycol type water source heat pump units performance testing device operation.Can freely switch the water pipe of use in the import of condenser side chilled water and outlet layout three tunnels simultaneously, the import of vaporizer side chilled water and outlet also arrange that three tunnels can freely switch the water pipe of use, wherein Dou You mono-tunnel is disposed in the outside between experimental enviroment, meet the adapter demand of dissimilar adapter unit, improve distinct interface unit and taken over efficiency, can be provided with two tested units station is installed, Measurement and Control System shares, realize a unit in the time of test, another unit is installed outdoor, has improved the testing efficiency of testing laboratory.
(2) device can carry out water-water type and the performance test of water-ethylene glycol type water source heat pump units, has expanded the accommodation of test unit to refrigerating medium working medium.
This proving installation arranges pipeline and is watered/partition heat-exchange system, pass through valve opening and closing, pipeline is watered heat-exchange system for common water-water type water source heat pump units performance test, realize chilled water and the heat exchange of chilled water mingle blending, ethylene glycol solution storage system and partition heat-exchange system are for the water-ethylene glycol type water source heat pump units performance test of eth.glycol circulation, realize ethylene glycol solution partition heat exchange in chilled water and evaporator in condenser by ethylene glycol plate type heat exchanger, expand thus the accommodation of tested water source heat pump units to refrigerating medium working medium.
(3) test operating mode is steadily reliable, and test result is accurate.
In the heat dissipation system of this proving installation, heat interchanger is set, realize part chilled water and the heat exchange of cooling tower water outlet partition, scatter and disappear in the heat of the mechanical equivalent of the compressor input work tower heat radiation water route that can not only be cooled, can also by the heat exchange of heat interchanger partition be cooled water heat dissipation water route further scatter and disappear, constant temperature water tank can provide temperature constant and the uniform chilled water water inlet of flow to cooling water system, thereby can guarantee to reach rapidly the desired test working condition of relevant criterion in water-water type/water-ethylene glycol type water source heat pump units performance test process, and proving installation working stability is reliable, test error is little, result is accurate.
(4) expand unit water temperature test specification, met the test condition of round-the-clock full operating mode.
This proving installation has increased the low-temperature receiver of two wind-cooled cold-water units as constant temperature water tank, in the time that summer temp is higher or move some special operation conditions (cooling water outlet temperature is lower), the heat of the mechanical equivalent of compressor input work can not scatter and disappear by cooling tower, open wind-cooled cold-water unit and provide cold water to constant temperature water tank, just met thus test condition round-the-clock, full operating mode, expand water-water type/water-ethylene glycol type water source heat pump units water temperature test specification, met the lower test (as GB cryogenic refrigeration running test) of chilled water temperature.
Accompanying drawing explanation
Fig. 1 is the disclosed a kind of water-cooled handpiece Water Chilling Units performance test constant temperature water tank schematic diagram of prior art.
Fig. 2 is the disclosed a kind of variable-volume water chiller set test device structural representation of prior art.
Fig. 3 is the principle schematic of proving installation of the present invention.
In figure: 1-cooling water system; The 11-the first threeway; The 12-the second threeway; The 13-the three threeway; The 14-the four threeway; 15-first flow meter; The 16-the first water pump; 2-chilled-water system; The 21-the five threeway; The 22-the six threeway; The 23-the seven threeway; The 24-the eight threeway; The 25-the second water pump; The 26-the second flowmeter; 27-expansion tank; Be watered/partition of 3-pipeline heat-exchange system; The 31-the three water pump; 32-ethylene glycol plate type heat exchanger; The 33-the four water pump; 4-heat dissipation system; 41-cooling tower; The 42-the five water pump; 43-heat interchanger; 44-wind-cooled cold-water unit; 45-constant temperature water tank; The 46-the six water pump; The 47-the seven water pump; 5-ethylene glycol solution storage system; The 51-the first valve; The 52-the second valve; The 53-the three valve; The 54-the four valve; The 55-the five valve; The 56-the six valve; The 57-the seven valve; The 58-the eight water pump; 59-ethylene glycol storage box; 61-tested water-water type/water-ethylene glycol type water source heat pump units condenser side; 62-tested water-water type/water-ethylene glycol type water source heat pump units vaporizer side; 7-water source.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is described in further detail.
As shown in Figure 3, water of the present invention-water type/water-ethylene glycol type water source heat pump units performance testing device, comprise the cooling water system 1 being connected with tested water-water type/water-ethylene glycol type water source heat pump units condenser side 61, the chilled-water system 2 being connected with tested water-water type/water-ethylene glycol type water source heat pump units vaporizer side 62, between cooling water system 1 and chilled-water system 2, be provided be watered/partition of the pipeline heat-exchange system 3 for carrying out exchange heat between chilled water and chilled water, and the heat dissipation system 4 being connected with cooling water system 1 and the ethylene glycol solution storage system 5 that is connected with chilled-water system 2.
In a preferred embodiment of the present invention, in cooling water system 1, be provided with bypass line, on bypass line, be provided with valve, one end of bypass line is connected on the pipeline between the first water pump 16 outlets and first flow meter 15, and the other end is connected on the pipeline between the 3rd threeway 13 and the 4th threeway 14.
Chilled-water system 2 comprises the chilled water pipeline of the 5th threeway 21, the 6th threeway 22, the 7th threeway 23, the 8th threeway 24, the second water pump 25 and the second flowmeter 26 that connect with pipeline successively, and the expansion tank 27 being connected with the 8th threeway 24, the import of the second water pump 25 is connected with the 8th threeway 24, and outlet is connected with the second flowmeter 26.
In a preferred embodiment of the present invention, in chilled-water system 2, be provided with bypass line, on bypass line, be provided with valve, one end of bypass line is connected on the pipeline between the second water pump 25 outlets and the second flowmeter 26, and the other end is connected on the pipeline between the 7th threeway 23 and the 8th threeway 24.
Be watered/partition of pipeline heat-exchange system 3 comprises the 3rd water pump 31, ethylene glycol plate type heat exchanger 32, the 4th water pump 33.Wherein, the import of the 3rd water pump 31 of be watered/partition of pipeline heat-exchange system 3 is connected with the second threeway 12, the outlet of the 3rd water pump 31 is divided into two-way, one tunnel is connected with the cooling water inlet end of ethylene glycol plate type heat exchanger 32, another Lu Yu seven threeways 23 connect and form pipeline I, the chilled water endpiece of ethylene glycol plate type heat exchanger 32 is connected with the 6th threeway 22 and forms pipeline II, the import of the 4th water pump 33 is connected with the 5th threeway 21, the outlet of the 4th water pump 33 is divided into two-way, one tunnel is connected with the 3rd threeway 13 and forms pipeline III, another road is connected with the chilled water entrance point of ethylene glycol plate type heat exchanger 32, the coolant outlet end of ethylene glycol plate type heat exchanger 32 is also connected with the 3rd threeway 13 and forms pipeline IV.
Heat dissipation system 4 comprises cooling tower 41, the 5th water pump 42, heat interchanger 43, wind-cooled cold-water unit 44, constant temperature water tank 45, the 6th water pump 46 and the 7th water pump 47, the cooling water inlet end of heat interchanger 43 is the water inlet end of heat dissipation system 4, be connected with the first threeway 11, the cooling tower water endpiece of heat interchanger 43 is connected with cooling tower 41 backwater ends, the water side of cooling tower 41 is connected with the 5th water pump 42 imports, the 5th water pump 42 outlets are connected with the cooling tower water entrance point of heat interchanger 43, the coolant outlet end of heat interchanger 43 is connected with the top water inlet end of constant temperature water tank 45, constant temperature water tank 45 water sides, bottom are connected with the 6th water pump 46 imports, the 6th water pump 46 outlets are connected with the entrance point of wind-cooled cold-water unit 44, the endpiece of wind-cooled cold-water unit 44 is connected with the bottom water inlet end of constant temperature water tank 45, another endpiece of constant temperature water tank 45 bottoms is connected with the 7th water pump 47 imports, the 7th water pump 47 outlets are the water side of heat dissipation system 4, be connected with the 4th threeway 14.Wherein, cooling tower 41, the 5th water pump 42 and heat interchanger 43 form cooling tower heat radiation water route, this water route is disposed in test bay outside, the water delivering orifice of cooling tower 41 is connected with the 5th water pump 42 imports, the 5th water pump 42 outlets are connected with the cooling tower water entrance point of heat interchanger 43, this is the outlet pipeline in cooling tower heat radiation water route, and the cooling tower water endpiece of heat interchanger 43 is connected with cooling tower 41 backwater ends, and this is the water return pipeline in cooling tower heat radiation water route; Constant temperature water tank 45, the 7th water pump 47, the 4th threeway 14, the first threeway 11 and heat interchanger 43 form chilled water heat dissipation water route, the first threeway 11 is connected with the cooling water inlet end of heat interchanger 43, be the water inlet end of heat dissipation system 4, the coolant outlet end of heat interchanger 43 is connected with constant temperature water tank 45, the water delivering orifice of constant temperature water tank 45 bottoms is connected with the 7th water pump 47 imports, and the 7th water pump 47 outlets are connected with the 4th threeway 14; Wind-cooled cold-water unit 44, constant temperature water tank 45 and the 6th water pump 46 form wind-cooled cold-water unit heat radiation water route, and constant temperature water tank 45 is connected with wind-cooled cold-water unit 44 through the 6th water pump 46 and forms closed circuit.
Ethylene glycol solution storage system 5 comprises the first valve 51, the second valve 52, the 8th water pump 58, the 3rd valve 53, the 4th valve 54, the ethylene glycol storage box 59 that connect successively, also comprises the 5th valve 55, the 6th valve 56 and the 7th valve 57.Wherein, one end of the first valve 51 is connected with the second valve 52, the other end is the recovery/supplementary end of ethylene glycol solution storage system 5, the import of the 8th water pump 58 is connected with the second valve 52, outlet is connected with the 3rd valve 53, on pipeline between the first valve 51 and the second valve 52, be also communicated with ethylene glycol charging line, described the 5th valve 55 is arranged on ethylene glycol charging line, one end of the 6th valve 56 is connected on the pipeline between the 3rd valve 53 and the 8th water pump 58 outlets, the other end is connected on the pipeline between the first valve 51 and the second valve 52, one end of the 7th valve 57 is connected on the pipeline between the 3rd valve 53 and the 4th valve 54, the other end is connected on the pipeline between the 8th water pump 58 imports and the second valve 52.
In apparatus of the present invention, the water side of cooling water system 1, is also that the water side of first flow meter 15 is connected with tested unit condenser side 61, the water side of chilled-water system 2, and also the water side of the second flowmeter 26 is connected with tested unit vaporizer side 62.
As shown in Figure 3, in the time that water-water type/water-ethylene glycol type water source heat pump units performance testing device is opened test:
For common water-water type water source heat pump units performance test, cooling water flow in cooling water system 1 is introduced the chilled water pipeline of chilled-water system 2 after the second threeway 12, the 3rd water pump 31 and pipeline I by the 7th threeway 23, the direct mingle blending heat exchange of chilled water and chilled water, part chilled water after mixed heat transfer flow through the 4th water pump 33(now the 4th water pump 33 do not need to open) after turned back to the cooling water pipeline of cooling water system 1 by the 3rd threeway 13 by pipeline III, the pipeline having completed thus between chilled water and chilled water is watered heat exchange circulation;
For the water-ethylene glycol type water source heat pump units performance test of eth.glycol circulation, get rid of the whole water in tested unit and chilled-water system, need glycol concentration and system water pipeline according to system, the ethylene glycol amount that the calculation of capacity of tested unit needs, close the first valve 51, the 6th valve 56, the 7th valve 57, open the second valve 52 simultaneously, the 3rd valve 53, the 4th valve 54 and the 5th valve 55, utilize the 8th water pump 58 that the ethylene glycol of barreled is introduced to ethylene glycol storage box 59 by test aequum, then add tap water to be mixed with the ethylene glycol solution of desired concn, in this process, take and carve by picnometer measurement ethylene glycol solution concentration, in case that solution concentration is joined by institute is too low.Close the second valve 52, the 3rd valve 53 and the 5th valve 55, open the first valve 51 simultaneously, the 4th valve 54, the 6th valve 56 and the 7th valve 57, utilize the 8th water pump 58 ethylene glycol solution preparing by desired concn in ethylene glycol storage box 59 to be incorporated into the chilled water pipeline of chilled-water system 2, complete the process that ethylene glycol solution is filled into vaporizer side chilled water pipeline, when test, chilled water is flowed through successively after the second threeway 12 and the 3rd water pump 31 and is entered from ethylene glycol plate type heat exchanger 32 cooling water inlet ends, with on the chilled water pipeline of chilled-water system 2 by the 5th threeway 21 flow through the 4th water pump 33(now the 4th water pump 33 need to open) after the ethylene glycol solution partition heat exchange that enters from ethylene glycol plate type heat exchanger 32 chilled water entrance points, after heat exchange, ethylene glycol solution is turned back to the chilled water pipeline of chilled-water system 2 from ethylene glycol plate type heat exchanger 32 chilled water endpiece after II pipeline by the 6th threeway 22, chilled water flows into the cooling water pipeline of cooling water system 1 from the 3rd threeway 13 after IV pipeline from ethylene glycol plate type heat exchanger 32 coolant outlet ends, realize the exchange heat between water-ethylene glycol type water source heat pump units condenser side chilled water and vaporizer side ethylene glycol solution by ethylene glycol plate type heat exchanger 32 wall-type heat exchanges thus.After off-test, close the 5th valve 55, the 6th valve 56 and the 7th valve 57, open simultaneously and open the first valve 51, the second valve 52, the 3rd valve 53 and the 4th valve 54, utilize the 8th water pump 58 that the ethylene glycol solution in vaporizer side chilled water pipeline is introduced to ethylene glycol storage box 59, complete ethylene glycol and reclaim;
In be watered/partition of pipeline heat transfer process, the responsible cooling water channel solution of the 3rd water pump 31 transports, the 4th water pump 33 is responsible for refrigerant water route solution and is transported in the time of water-ethylene glycol type water source heat pump units performance test, freezing pipeline while simultaneously regulating the 4th water pump 33 frequency converters effectively to prevent solution low temperature, when flowing through the cooling water flow of the first water pump 16 in cooling water system 1 when larger, open the valve on bypass line in parallel with it and form circulation, can effectively reduce discharge and prevent water attack.When flowing through the chilled water flow of the second water pump 25 in chilled-water system 2 when larger, open the valve on bypass line in parallel with it and form circulation, can effectively reduce discharge and prevent water attack, guaranteeing that water-water type/water-ethylene glycol type water source heat pump units performance testing device safely and steadily runs.By pump variable frequency technology, regulate the frequency converter of the first water pump 16 to realize leaving water temperature (discharge) control of chilled water, 31 the frequency converter that adjusting is watered the 3rd water pump on heat exchanging pipe is realized the inflow temperature (discharge) of chilled water and is controlled, and the leaving water temperature (discharge) that regulates the frequency converter of the second water pump 25 to realize chilled water is controlled.
From the first law of thermodynamics, for tested water-water type/water-ethylene glycol type water source heat pump units, the heating capacity of water-water type/water-ethylene glycol type water source heat pump units cooling water side equals the refrigerating capacity of unit chilled water side and the input work sum of compressor, wish realizes the cold that heat that tested water-water type/water-ethylene glycol type water source heat pump units condenser side 17 produces and vaporizer side 28 produce and balances each other, and needs the energy of external low-temperature receiver consumption to be only equivalent to compressor input work so large.The heat of the mechanical equivalent of compressor input work is scattered and disappeared by heat dissipation system 4, wall-type heat exchange is carried out by heat interchanger 43 in chilled water heat dissipation water route and cooling tower heat radiation water route, in the cooling water pipeline of cooling water system 1 part chilled water be introduced into by the first threeway 11 after the cooling water inlet end of heat interchanger 43 with introduced by heat interchanger 43 cooling tower water entrance points from the cooling tower water partition heat exchange in the outlet pipeline of cooling tower heat radiation water route, heat exchange flowed into constant temperature water tank 45 from the chilled water of cooling water system 1 from the coolant outlet end of heat interchanger 43 afterwards, cooling tower water from cooling tower 41 flows back to cooling tower 41 from the cooling tower water endpiece of heat interchanger 43 through cooling tower water return pipeline, now in heat dissipation system 4, complete part chilled water and the cooling tower water partition heat transfer process through heat interchanger 43, the heat that when partition heat exchange, cooling tower water absorbs is dissipated by the cooling tower heat radiation water route being arranged in outside test bay, chilled water after partition heat exchange flows into constant temperature water tank 45, if cooling water temperature is also higher, this part surplus heat is is further scattered and disappeared by chilled water heat dissipation water route, just complete thus the heat loss of the mechanical equivalent of compressor input work.Control cooling tower heat-sinking capability by controlling blower fan of cooling tower frequency, thereby control constant temperature water tank 45 water temperatures, blower fan frequency is higher, and radiating effect is better, and water tank temperature declines lower.In the heat loss process of the mechanical equivalent of compressor input work, the water outlet of constant temperature water tank 45 is flowed into the cooling water pipeline of cooling water system 1 by the 4th threeway 14 through the 7th water pump 47, this pipeline is the inlet ductwork of chilled water in cooling water system 1, regulates the frequency converter of the 7th water pump 47 can realize the control to cold in-water temperature (discharge).Because glassware for drinking water has incompressibility, when therefore adding cold water to cooling water system, also need to discharge hot water, add like this cold water to discharge hot water and just can control cooling water system water temperature.The power resources in chilled water heat dissipation water route are the 7th water pump 47, and the power resources in cooling tower heat radiation water route are the 5th water pump 42.Water source 7 can be cooling tower 41 by pipeline and constant temperature water tank 45 supplies water.
Further, constant for guaranteeing constant temperature water tank 45 water temperatures, test unit of the present invention has increased wind-cooled cold-water unit heat radiation water route, and the low-temperature receiver of two wind-cooled cold-water units 44 as constant temperature water tank 45 is set.Waterway circulating is realized by the 6th water pump 46 in wind-cooled cold-water unit heat radiation water route, and the water in constant temperature water tank 45 flows into after wind-cooled cold-water unit 44 is changed temperature and sends back to constant temperature water tank 45 again through the 6th water pump 46.In the time that summer temp is higher or move some special operation conditions (cooling water outlet temperature is lower), the heat of the mechanical equivalent of compressor input work can not by cooling tower dispel the heat water route scatter and disappear, at this moment close the 5th water pump 42, open wind-cooled cold-water unit 44 and the 6th water pump 46, meet test condition round-the-clock, full operating mode by wind-cooled cold-water unit heat radiation water route for constant temperature water tank 45 provides cold water, just expanded thus water-water type/water-ethylene glycol type water source heat pump units water temperature test specification.
Finally, water-water type/water-ethylene glycol type water source heat pump units performance testing device can freely switch the water pipe of use in the import of condenser side chilled water and outlet layout three tunnels, the import of vaporizer side chilled water and outlet also arrange that three tunnels can freely switch the water pipe of use, wherein all Ge You mono-tunnel is disposed in the outside between experimental enviroment, can meet the adapter demand of dissimilar adapter unit, improve adapter efficiency, two tested units also can be set station is installed, Measurement and Control System shares, having realized one of tested unit another unit in the time of test can install outdoor, thereby improve the testing efficiency of testing laboratory.
Claims (5)
1. water-water type/water-ethylene glycol type water source heat pump units performance testing device, it is characterized in that, this proving installation comprises the cooling water system (1), be watered/partition of pipeline heat-exchange system (3), chilled-water system (2) and the ethylene glycol solution storage system (5) that connect successively, and the heat dissipation system (4) being connected with described cooling water system (1);
Described cooling water system (1) comprises the first threeway (11), the second threeway (12), the 3rd threeway (13), the 4th threeway (14), the first water pump (16) and the first flow meter (15) that connect successively, the import of described the first water pump (16) is connected with the 4th threeway (14), and outlet is connected with first flow meter (15);
Described chilled-water system (2) comprises the 5th threeway (21), the 6th threeway (22), the 7th threeway (23), the 8th threeway (24), the second water pump (25), the second flowmeter (26) that connect successively, and the expansion tank (27) being connected with described the 8th threeway (24), the import of described the second water pump (25) is connected with the 8th threeway (24), and outlet is connected with the second flowmeter (26);
Be watered/partition of described pipeline heat-exchange system (3) comprises the 3rd water pump (31), ethylene glycol plate type heat exchanger (32), the 4th water pump (33), the import of described the 3rd water pump (31) is connected with the second threeway (12), the outlet of the 3rd water pump (31) is divided into two-way, one tunnel is connected with the cooling water inlet end of ethylene glycol plate type heat exchanger (32), another Lu Yu seven threeways (23) connect, the chilled water endpiece of ethylene glycol plate type heat exchanger (32) is connected with the 6th threeway (22), the import of the 4th water pump (33) is connected with the 5th threeway (21), the outlet of the 4th water pump (33) is divided into two-way, one tunnel is connected with the 3rd threeway (13), another road is connected with the chilled water entrance point of ethylene glycol plate type heat exchanger (32), the coolant outlet end of ethylene glycol plate type heat exchanger (32) is also connected with the 3rd threeway (13),
The water inlet end of described heat dissipation system (4) is connected with the first threeway (11), and water side is connected with the 4th threeway (14); Recovery/supplementary the end of described ethylene glycol solution storage system (5) is connected on the pipeline between the 8th threeway (24) and the second water pump (25).
2. a kind of water-water type/water-ethylene glycol type water source heat pump units performance testing device according to claim 1, it is characterized in that, described heat dissipation system (4) comprises cooling tower (41), the 5th water pump (42), heat interchanger (43), wind-cooled cold-water unit (44), constant temperature water tank (45), the 6th water pump (46) and the 7th water pump (47), the cooling water inlet end of described heat interchanger (43) is the water inlet end of heat dissipation system (4), be connected with the first threeway (11), the cooling tower water endpiece of heat interchanger (43) is connected with cooling tower (41) backwater end, the water side of cooling tower (41) is connected with the 5th water pump (42) import, the 5th water pump (42) outlet is connected with the cooling tower water entrance point of heat interchanger (43), the coolant outlet end of heat interchanger (43) is connected with the top water inlet end of constant temperature water tank (45), constant temperature water tank (45) water side, bottom is connected with the 6th water pump (46) import, the 6th water pump (46) outlet is connected with the entrance point of wind-cooled cold-water unit (44), the endpiece of wind-cooled cold-water unit (44) is connected with the bottom water inlet end of constant temperature water tank (45), another endpiece of constant temperature water tank (45) bottom is connected with the 7th water pump (47) import, the 7th water pump (47) outlet is the water side of heat dissipation system (4), be connected with the 4th threeway (14).
3. a kind of water-water type/water-ethylene glycol type water source heat pump units performance testing device according to claim 1 and 2, it is characterized in that, described ethylene glycol solution storage system (5) comprises the first valve (51) connecting successively, the second valve (52), the 8th water pump (58), the 3rd valve (53), the 4th valve (54), ethylene glycol storage box (59), also comprise the 5th valve (55), the 6th valve (56) and the 7th valve (57), one end of described the first valve (51) is connected with the second valve (52), the other end is the recovery/supplementary end of ethylene glycol solution storage system (5), the import of the 8th water pump (58) is connected with the second valve (52), and outlet is connected with the 3rd valve (53),
On pipeline between the first valve (51) and the second valve (52), be also communicated with ethylene glycol charging line, described the 5th valve (55) is arranged on ethylene glycol charging line;
One end of described the 6th valve (56) is connected on the pipeline between the 3rd valve (53) and the outlet of the 8th water pump (58), and the other end is connected on the pipeline between the first valve (51) and the second valve (52);
One end of described the 7th valve (57) is connected on the pipeline between the 3rd valve (53) and the 4th valve (54), and the other end is connected on the pipeline between the 8th water pump (58) import and the second valve (52).
4. a kind of water-water type/water-ethylene glycol type water source heat pump units performance testing device according to claim 1 and 2, it is characterized in that, described cooling water system is provided with bypass line in (1), on described bypass line, be provided with valve, one end of bypass line is connected on the pipeline between the first water pump (16) outlet and first flow meter (15), and the other end is connected on the pipeline between the 3rd threeway (13) and the 4th threeway (14);
Described chilled-water system is also provided with bypass line in (2), on described bypass line, be provided with valve, one end of bypass line is connected on the pipeline between the second water pump (25) outlet and the second flowmeter (26), and the other end is connected on the pipeline between the 7th threeway (23) and the 8th threeway (24).
5. a kind of water-water type/water-ethylene glycol type water source heat pump units performance testing device according to claim 1 and 2, it is characterized in that, the water side of described cooling water system (1), also the water side that is first flow meter (15) is connected with tested unit condenser side (61), the water side of chilled-water system (2), also the water side of the second flowmeter (26) is connected with tested unit vaporizer side (62).
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| CN103808524B (en) | 2016-03-30 |
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