CN105136511A - Ground source heat pump and ground source side heat exchange test system and control method thereof - Google Patents
Ground source heat pump and ground source side heat exchange test system and control method thereof Download PDFInfo
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- CN105136511A CN105136511A CN201510690403.8A CN201510690403A CN105136511A CN 105136511 A CN105136511 A CN 105136511A CN 201510690403 A CN201510690403 A CN 201510690403A CN 105136511 A CN105136511 A CN 105136511A
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 239000012530 fluid Substances 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000007710 freezing Methods 0.000 claims abstract description 5
- 230000008014 freezing Effects 0.000 claims abstract description 5
- 238000009835 boiling Methods 0.000 claims abstract description 4
- 239000007864 aqueous solution Substances 0.000 claims description 36
- 238000013461 design Methods 0.000 claims description 30
- 238000002474 experimental method Methods 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
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- 238000009413 insulation Methods 0.000 abstract description 10
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a ground source heat pump and ground source side heat exchange test system and a control method thereof. The system comprises a heat insulation water tank, a refrigeration unit, a fluid heating device, a fluid circulation device and a control system, wherein the heat insulation water tank is used for carrying out accumulation and heat insulation on a test water solution, and the test water solution has a freezing point lower than -5 DEG C and a boiling point higher than 30 DEG C; the refrigeration unit is connected with the heat insulation water tank via a pipeline, a valve is arranged on the pipeline, and the refrigeration unit is used for carrying out circulating cooling on the heat insulation water tank according to a valve signal; the fluid heating device is used for heating the heat insulation water tank according to set temperature; the fluid circulation device is connected between the heat insulation water tank and a tested heat exchanger on a test bench to form circulation of the test water solution to enable the heat exchange to release heat to the heat insulation water tank in a heating condition and enable the heat exchange to absorb heat from the heat insulation water tank in a cooling condition; and the control system is used for controlling heating of the fluid heating device and circulation of the fluid circulation device. Various working conditions of the ground source heat pump in an actual application progress can be simulated, corresponding problems can be prevented from happening in actual applications, and the project risk cost is reduced.
Description
Technical field
The present invention relates to ground source heat pump technology, particularly be a kind of to simulate in earth source heat pump and soil heat exchange the pilot system of source heat exchange situation.
Background technology
Ground source heat pump technology belongs to renewable energy utilization technology.Earth source heat pump make use of earth surface geothermal using resource as Cooling and Heat Source, carries out the heating air-conditioner system of energy conversion.Shallow surface geothermal energy resources can be referred to as ground can, refer in surface soil, underground water or river, lake and absorb sun power, geothermal energy and the low-temperature heat energy contained.Shallow surface is a huge solar thermal collector, have collected the solar energy of 47%, more than annual 500 times of utilizing energy of the mankind.It is not by the restriction such as region, resource, be really have a large capacity and a wide range, ubiquitous.Thisly be stored in the almost limitless regenerative resource of shallow surface, become a kind of form of clean regenerative resource.Earth source heat pump a tractor serves several purposes, applied range.Earth-source hot-pump system can heat, air-conditioning, also can domestic hot-water supply, a tractor serves several purposes, and set of system can replace two covering devices or the system that original boiler adds air-conditioning; Can be applicable to the buildings such as hotel, market, office building, school.Different temperature band all can use, and especially for cold district, when air source heat pump cannot use, earth source heat pump can also use.
In ground source heat pump technology, excavation underground water source water system is more difficult, quantities is large, thus need to carry out simulation test to underground water source water system, special needs over the ground source heat exchange are simulated, thus the operating mode of test unit, in actual application, there is to avoid unit the problem that corresponding operating mode is identical.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of ground source heat ground source heat transfer experiments system and control method thereof, can simulate the various operating modes of earth source heat pump in actual application, avoid occurring corresponding problem in practical application, reduces engineering risk cost.
For solving the problem, the present invention proposes a kind of ground source heat ground source heat transfer experiments system, comprising:
Attemperater, it is for holding and being incubated test aqueous solution, and the freezing point of described test aqueous solution is lower than-5 DEG C, and boiling point is greater than 30 DEG C;
Refrigeration unit, connects attemperater by pipeline, and pipeline is provided with valve, and refrigeration unit is in order to carry out circulation cooling according to valve signal to described attemperater;
Fluid heater, in order to heat described attemperater according to design temperature;
Fluid circulating device, is connected to the circulation forming test aqueous solution between described attemperater and the tested heat interchanger of testing table, gives off heat to attemperater, heat interchanger absorbs heat from attemperater in cooling condition with heat interchanger in heating condition; And
Control system, in order to the circulation of the heating and fluid circulating device that control fluid heater.
According to one embodiment of present invention, described attemperater is two layers of hot box, arranges heat insulation foam between two-layer tank wall.
According to one embodiment of present invention, described fluid heater comprises:
Electric heater, it is arranged in described attemperater, in order to heat described test aqueous solution;
Power regulating eqiupment, is controlled by described control system, according to described design temperature determination electrical heating power, is heated to relevant temperature to control described electric heater.
According to one embodiment of present invention, described fluid circulating device comprises:
Outlet pipeline, its top connects the water delivering orifice of described attemperater, and its end connects the water inlet of described heat interchanger, which is provided with switching control pilot;
Inlet pipeline, its top connects the water delivering orifice of described heat interchanger, and its end connects the water inlet of described attemperater;
Water pump, it is arranged on the close top place of described outlet pipeline, goes out hydrodynamic force in order to what provide described attemperater;
T-valve, it is arranged on described outlet pipeline, and its input end connects described water delivery side of pump, and its first output terminal is connected to described inlet pipeline, and its second output terminal connects the water inlet of described heat interchanger.
According to one embodiment of present invention, described fluid circulating device also comprises:
Frequency converter, is controlled by described control system, is regulated the delivery rate of described water pump by the motor controlling described water pump.
According to one embodiment of present invention, described fluid circulating device also comprises T-valve drive adjusting device, and it comprises:
PID regulator, is controlled by described control system, produces the valve opening signal of T-valve;
Driver, receive and according to described valve opening Signal Regulation the valve opening of T-valve.
According to one embodiment of present invention, also comprise:
Liquid level gauge, it is arranged in attemperater, in order to detect the water level of attemperater, and water level signal is transferred to control system.
According to one embodiment of present invention, also comprise:
Two position relay, it is arranged in attemperater, in order to detect the two position of attemperater, produces a cut-off signal when liquid level is too high or too low, and is transferred to control system control fluid circulating device stopping circulation.
According to one embodiment of present invention, also comprise:
Temperature sensor, it is arranged on the water delivering orifice of described attemperater, in order to detect the test aqueous solution temperature at the mouth of a river.
For solving the problem, the present invention also proposes the control method of a kind of source as earlier mentioned thermally source heat transfer experiments system, it is characterized in that, comprises the following steps:
S1: setting testing table running parameter, described running parameter comprises described design temperature, tested unit operating mode, duration of test runs;
S2: water temperature or outlet water temperature in the case judging attemperater, if design temperature is greater than water temperature or outlet water temperature in described case, then start described fluid heater to carry out being heated to design temperature, if design temperature is less than or equal to water temperature or outlet water temperature in described case, then starts described refrigeration unit and utilize its constant temperature cold water to described attemperater for being chilled to design temperature;
S3: judge tested unit operating mode, if heating condition, then control T-valve and keep full-gear, control frequency converter adjustment pump motor rotating speed to regulate water pump delivery rate, or control frequency converter maintenance full-speed state, the valve opening of Control PID regulator regulating three-way valve is with regulating system circular flow, described fluid heater is coordinated to heat, design temperature is remained to make attemperater leaving water temperature, if cooling condition, then control T-valve and keep full-gear, control frequency converter adjustment pump motor rotating speed to regulate water pump delivery rate, or control frequency converter maintenance full-speed state, the valve opening of Control PID regulator regulating three-way valve is with regulating system circular flow, coordinate described refrigeration unit cooling, design temperature is remained to make attemperater leaving water temperature,
S4: record attemperater leaving water temperature, the power that record water pump and fluid heater consume.
After adopting technique scheme, the present invention has following beneficial effect compared to existing technology: arrange the test aqueous solution that attemperater provides steady temperature, and can the test aqueous solution of heating, temperature keeping water tank by circulation heating arrangement, the aqueous solution of attemperater can be cooled by refrigeration unit, thus can regulating and controlling water temperature, thus the simulation test that may be used in different operating mode, between attemperater and tested heat interchanger, the water route of circulation is formed by fluid circulating device, tested heat interchanger is exactly the heat interchanger of tested unit, thus when heating condition, the test aqueous solution temperature that test aqueous solution temperature in attemperater flows out lower than tested heat interchanger, fluid circulating device takes the heat in tested heat interchanger in attemperater heat exchange, when cooling condition, the temperature of the test aqueous solution that the test aqueous solution in attemperater flows out higher than tested heat interchanger, cold in tested heat interchanger takes in attemperater by fluid circulating device, the carry heat of attemperater gives tested heat interchanger, the heat exchange simulation test of ground source heat ground source can be realized with this, record each parameter under operating mode, abnormal problem can be detected in advance, reduce the loss in Practical Project.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the ground source heat ground source heat transfer experiments system of one embodiment of the invention;
Fig. 2 is the schematic flow sheet of the control method of the ground source heat ground source heat transfer experiments system of one embodiment of the invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
Pilot system of the present invention is specifically designed to various earth source heat pump class cooling and warming unit in inspection process, imitates the system at earth source heat pump constant temperature water supply water source.Fluid heater is provided with in the attemperater of system, when detecting for earth source heat pump class heating machine set, assure feed water water temperature maintains can design temperature, and another attemperater is provided with external interface, external handpiece Water Chilling Units when detecting for earth source heat pump class refrigeration unit, keeps constant temperature with cooling water source temperature.By providing manually operated constant temperature water source, thus water inlet environment when earth source heat pump cooling and warming unit that is virtually reality like reality works in the lab, thus avoid the difficulty excavating underground water source water system.System according to EN14511-1-4:2011 " being the air conditioner in room heating (refrigeration) with power driven compressor, liquid refrigerating machine " standard-required design, and uses as resource of water supply when can be used for air conditioner corresponding to above-mentioned standard detection.
Referring to Fig. 1, in the present embodiment, ground source heat ground source heat transfer experiments system comprises: attemperater 1, refrigeration unit 2, fluid heater, fluid circulating device and control system 6.
Wherein, attemperater 1 is for holding and being incubated the test aqueous solution needed for earth source heat pump unit detection experiment, because of Test Condition Requirements, under some operating mode, the import medium temperature of earth source heat pump unit outdoor heat exchanger (not shown) is-5 DEG C, export medium temperature under some operating mode and can reach-3 DEG C, and some operating condition of test of system requires that the import medium temperature of unit outdoor heat exchanger is 30 DEG C, therefore the medium used in test still should be able to keep flow state at this temperature, the freezing point of the test aqueous solution thus selected is lower than-5 DEG C, boiling point is greater than 30 DEG C, it can be such as glycol water, can to be more specifically mass concentration be 25% glycol water, its freezing point is less than-12 DEG C, therefore enough meet system requirements, but be not restricted to this.
In a preferred embodiment, attemperater 1 can be two layers of hot box, and arranges heat insulation foam between two-layer tank wall, can make the better heat preservation of casing on the one hand, distortion during casing can be avoided on the other hand to use.
Thermal-insulating body 1 is provided with the interface connecting refrigeration unit, namely the water inlet of refrigeration unit 2 and water delivering orifice are all connected to two interfaces of attemperater 1 by pipeline, refrigerating circuit can be formed, pipeline is provided with valve, refrigeration unit 2 carries out circulation cooling according to valve signal to attemperater 1, can establish valve at the outlet pipeline be connected with refrigeration unit 2 and oral siphon Lu Shangjun, when two valves are all opened, refrigeration unit 2 is to attemperater 1 cooling.
Fluid heater, in order to heat attemperater according to design temperature, is namely heated to design temperature to the test aqueous solution in attemperater.
In a specific embodiment, fluid heater can comprise electric heater 31 and power regulating eqiupment 32.Electric heater 31 is arranged in attemperater 1, can be arranged on box inside wall, is used for heat test aqueous solution, such as, can be stainless steel electric heater.Power regulating eqiupment 32 is controlled by control system, determines required electrical heating power according to design temperature, to control the temperature that electric heater 31 is heated to respective settings, guarantees that the temperature of test aqueous solution meets testing requirements as far as possible.
Fluid circulating device is connected to the circulation forming test aqueous solution between attemperater 1 and the tested heat interchanger of testing table, tested heat interchanger is the heat interchanger of tested unit, the tested heat interchanger in heating condition that the circulation of test aqueous solution is gives off heat to attemperater 1, in cooling condition, tested heat interchanger absorbs heat from attemperater 1, the circulation of test aqueous solution is such as that test aqueous solution is successively by attemperater water delivering orifice-tested heat interchanger water inlet-tested heat interchanger water delivering orifice-attemperater water inlet, when heating condition, the test aqueous solution temperature that tested heat interchanger exports is greater than the temperature of the test aqueous solution in attemperater 1, when cooling condition, the test aqueous solution temperature that tested heat interchanger exports is lower than the temperature of the test aqueous solution in attemperater 1.
Control system is used to carry out overall to control, and can control the heating of fluid heater and the circulation of fluid circulating device, the mode of controlled circulation such as can comprise startup or the closedown of controlled circulation, and the flow of test aqueous solution in cyclic process.
In a specific embodiment, fluid circulating device can comprise outlet pipeline 41, inlet pipeline 42, water pump 43 and T-valve 44.Wherein, the top of outlet pipeline 41 connects the water delivering orifice of attemperater 1, and end connects the water inlet of heat interchanger, which is provided with switching control pilot; The top of inlet pipeline 42 connects the water delivering orifice of heat interchanger, and end connects the water inlet of attemperater 1, and it can be provided with switching control pilot; Water pump 43 is arranged on the close top place of outlet pipeline 41, goes out hydrodynamic force, namely from attemperater 1, extract test aqueous solution, be supplied to the heat interchanger of pilot system, be appreciated that water pump 43 is driven by motor 45 in order to what provide attemperater 1; T-valve 44 is arranged on outlet pipeline 41, and input end connects the output terminal of water pump 43, and the first output terminal is connected to inlet pipeline 42, and the second output terminal connects the water inlet of heat interchanger, the flow during T-valve 44 can regulate test aqueous solution to circulate.
Further, fluid circulating device can also comprise frequency converter 46, is controlled by control system 6, can regulate the delivery rate of water pump 43 by controlling the motor 45 of water pump 43, to change the delivery rate of water pump 43 as required and economize energy consumption.
Further, fluid circulating device also comprises T-valve drive adjusting device, and it comprises: PID regulator (proportional integral derivative controller) 47 and driver 48.PID regulator 47 is controlled by control system 6, produces the valve opening signal of T-valve 44; Driver 48 receives and according to the valve opening of valve opening Signal Regulation T-valve 44.
Control system 6 controls frequency converter 46 and changes motor 45 rotating speed, the aquifer yield of water pump 43 can be regulated, namely can regulate the flow in circulation waterway, control system 6 controls the aperture of T-valve 44, the flow in circulation waterway can be regulated equally, regulate the flow of test aqueous solution just can regulate the speed of temperature variation.
Preferably, ground source heat ground source heat transfer experiments system can also comprise: liquid level gauge (not shown), is arranged in attemperater 1, in order to detect the water level of attemperater 1, and water level signal is transferred to control system 6, liquid level gauge preferably stainless steel is that main material is made.
Preferably, ground source heat ground source heat transfer experiments system can also comprise: two position relay (not shown), be arranged in attemperater 1, in order to detect the two position of attemperater 1, a cut-off signal is produced when liquid level is too high or too low, and be transferred to control system 6 control fluid circulating device stop circulation, such as, when liquid level is too low, can control system pump trip to avoid system failure.
Preferably, ground source heat ground source heat transfer experiments system can also comprise: temperature sensor 7, be arranged on the water delivering orifice of attemperater 1, in order to detect the test aqueous solution temperature at the mouth of a river, certainly more temperature sensor can also be set at other positions, such as at the water inlet also set temperature sensor of attemperater 1, to detect the test aqueous solution temperature of water inlet, temperature sensor model can be pt100.
Ground source heat ground source heat transfer experiments system can also comprise filtrator 49, run-down pipe etc.
Referring to Fig. 2, the control method of a kind of ground source heat ground source heat transfer experiments system, ground source heat ground source heat transfer experiments system comprises attemperater 1, refrigeration unit 2, fluid heater, fluid circulating device, control system 6.Fluid circulating device can comprise outlet pipeline 41, inlet pipeline 42, water pump 43, T-valve 44, frequency converter 46 and T-valve drive adjusting device.
The control method of ground source heat ground source heat transfer experiments system comprises the following steps:
S1: setting testing table running parameter, described running parameter comprises described design temperature, tested unit operating mode, duration of test runs; Tested unit operating mode can comprise cooling condition and heating condition; In one embodiment, further comprises display device, can temperature sensor measurement value, water pump state, the T-valve state of water temperature and intake-outlet in show case;
S2: water temperature or outlet water temperature in the case judging attemperater, if design temperature is greater than water temperature or outlet water temperature in described case, then start described fluid heater to carry out being heated to design temperature, if design temperature is less than or equal to water temperature or outlet water temperature in described case, then starts described refrigeration unit and utilize its constant temperature cold water to described attemperater for being chilled to design temperature;
S3: judge tested unit operating mode, if heating condition, then control T-valve and keep full-gear, control frequency converter adjustment pump motor rotating speed to regulate water pump delivery rate, or control frequency converter maintenance full-speed state, the valve opening of Control PID regulator regulating three-way valve is with regulating system circular flow, described fluid heater is coordinated to heat, design temperature is remained to make attemperater leaving water temperature, if cooling condition, then control T-valve and keep full-gear, control frequency converter adjustment pump motor rotating speed to regulate water pump delivery rate, or control frequency converter maintenance full-speed state, the valve opening of Control PID regulator regulating three-way valve is with regulating system circular flow, coordinate described refrigeration unit cooling, design temperature is remained to make attemperater leaving water temperature,
S4: record attemperater leaving water temperature, the power that record water pump and fluid heater consume, testing table possesses relevant device.
Said process automatic cycle, until manual intervention shutdown or duration of test runs are finished.
The present invention only for testing the heating condition of tested unit, so can not need to connect refrigeration unit, only needing to realize the operating mode that tested unit is in the state of heating, and only needs to use test(ing) liquid in electric heater heating and thermal insulation water tank.
Although the present invention with preferred embodiment openly as above; but it is not for limiting claim; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. a ground source heat ground source heat transfer experiments system, is characterized in that, comprising:
Attemperater, it is for holding and being incubated test aqueous solution, and the freezing point of described test aqueous solution is lower than-5 DEG C, and boiling point is greater than 30 DEG C;
Refrigeration unit, connects attemperater by pipeline, and pipeline is provided with valve, and refrigeration unit is in order to carry out circulation cooling according to valve signal to described attemperater;
Fluid heater, in order to heat described attemperater according to design temperature;
Fluid circulating device, is connected to the circulation forming test aqueous solution between described attemperater and the tested heat interchanger of testing table, gives off heat to attemperater, heat interchanger absorbs heat from attemperater in cooling condition with heat interchanger in heating condition; And
Control system, in order to the circulation of the heating and fluid circulating device that control fluid heater.
2. ground source heat ground as claimed in claim 1 source heat transfer experiments system, it is characterized in that, described attemperater is two layers of hot box, arranges heat insulation foam between two-layer tank wall.
3. ground source heat ground as claimed in claim 1 source heat transfer experiments system, it is characterized in that, described fluid heater comprises:
Electric heater, it is arranged in described attemperater, in order to heat described test aqueous solution;
Power regulating eqiupment, is controlled by described control system, according to described design temperature determination electrical heating power, is heated to relevant temperature to control described electric heater.
4. ground source heat ground as claimed in claim 1 source heat transfer experiments system, it is characterized in that, described fluid circulating device comprises:
Outlet pipeline, its top connects the water delivering orifice of described attemperater, and its end connects the water inlet of described heat interchanger, which is provided with switching control pilot;
Inlet pipeline, its top connects the water delivering orifice of described heat interchanger, and its end connects the water inlet of described attemperater;
Water pump, it is arranged on the close top place of described outlet pipeline, goes out hydrodynamic force in order to what provide described attemperater;
T-valve, it is arranged on described outlet pipeline, and its input end connects described water delivery side of pump, and its first output terminal is connected to described inlet pipeline, and its second output terminal connects the water inlet of described heat interchanger.
5. ground source heat ground as claimed in claim 4 source heat transfer experiments system, it is characterized in that, described fluid circulating device also comprises:
Frequency converter, is controlled by described control system, is regulated the delivery rate of described water pump by the motor controlling described water pump.
6. ground source heat ground as claimed in claim 5 source heat transfer experiments system, it is characterized in that, described fluid circulating device also comprises T-valve drive adjusting device, and it comprises:
PID regulator, is controlled by described control system, produces the valve opening signal of T-valve;
Driver, receive and according to described valve opening Signal Regulation the valve opening of T-valve.
7. ground source heat ground as claimed in claim 1 source heat transfer experiments system, is characterized in that, also comprise:
Liquid level gauge, it is arranged in attemperater, in order to detect the water level of attemperater, and water level signal is transferred to control system.
8. ground source heat ground as claimed in claim 1 source heat transfer experiments system, is characterized in that, also comprise:
Two position relay, it is arranged in attemperater, in order to detect the two position of attemperater, produces a cut-off signal when liquid level is too high or too low, and is transferred to control system control fluid circulating device stopping circulation.
9. ground source heat ground as claimed in claim 1 source heat transfer experiments system, is characterized in that, also comprise:
Temperature sensor, it is arranged on the water delivering orifice of described attemperater, in order to detect the test aqueous solution temperature at the mouth of a river.
10. a control method for ground source heat ground as claimed in claim 6 source heat transfer experiments system, is characterized in that, comprise the following steps:
S1: setting testing table running parameter, described running parameter comprises described design temperature, tested unit operating mode, duration of test runs;
S2: water temperature or outlet water temperature in the case judging attemperater, if design temperature is greater than water temperature or outlet water temperature in described case, then start described fluid heater to carry out being heated to design temperature, if design temperature is less than or equal to water temperature or outlet water temperature in described case, then starts described refrigeration unit and utilize its constant temperature cold water to described attemperater for being chilled to design temperature;
S3: judge tested unit operating mode, if heating condition, then control T-valve and keep full-gear, control frequency converter adjustment pump motor rotating speed to regulate water pump delivery rate, or control frequency converter maintenance full-speed state, the valve opening of Control PID regulator regulating three-way valve is with regulating system circular flow, described fluid heater is coordinated to heat, design temperature is remained to make attemperater leaving water temperature, if cooling condition, then control T-valve and keep full-gear, control frequency converter adjustment pump motor rotating speed to regulate water pump delivery rate, or control frequency converter maintenance full-speed state, the valve opening of Control PID regulator regulating three-way valve is with regulating system circular flow, coordinate described refrigeration unit cooling, design temperature is remained to make attemperater leaving water temperature,
S4: record attemperater imports and exports water temperature, the power that record water pump and fluid heater consume.
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Cited By (7)
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| CN107314419A (en) * | 2017-08-07 | 2017-11-03 | 宝莲华新能源技术（上海）股份有限公司 | A kind of indoor low temperature cooling system suitable for Household Air-source Heat Pump in Cold Regions heating |
| CN108458507A (en) * | 2018-04-18 | 2018-08-28 | 河南理工大学 | Energy stake heat-exchanger rig and its heat-exchange method under a kind of winter condition |
| CN110006180A (en) * | 2019-03-15 | 2019-07-12 | 大族激光科技产业集团股份有限公司 | Circulation fluid heat exchange power control method and control device, controller and storage medium |
| CN113282118A (en) * | 2021-05-14 | 2021-08-20 | 中山凯旋真空科技股份有限公司 | Constant-temperature water supply system |
| CN114326870A (en) * | 2021-11-10 | 2022-04-12 | 江苏华洋新思路能源装备股份有限公司 | Adjustable hot water flow testing arrangement |
| CN116625716A (en) * | 2023-04-27 | 2023-08-22 | 重庆大学 | A simulation test device and experimental method of a deep-buried heat-taking chamber ice cube-type air source heat exchanger with controllable heat transfer area |
| CN119065417A (en) * | 2024-11-01 | 2024-12-03 | 上海佐竹冷热控制技术有限公司 | A high dynamic response water temperature control method and device |
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| CN110006180A (en) * | 2019-03-15 | 2019-07-12 | 大族激光科技产业集团股份有限公司 | Circulation fluid heat exchange power control method and control device, controller and storage medium |
| CN113282118A (en) * | 2021-05-14 | 2021-08-20 | 中山凯旋真空科技股份有限公司 | Constant-temperature water supply system |
| CN114326870A (en) * | 2021-11-10 | 2022-04-12 | 江苏华洋新思路能源装备股份有限公司 | Adjustable hot water flow testing arrangement |
| CN116625716A (en) * | 2023-04-27 | 2023-08-22 | 重庆大学 | A simulation test device and experimental method of a deep-buried heat-taking chamber ice cube-type air source heat exchanger with controllable heat transfer area |
| CN119065417A (en) * | 2024-11-01 | 2024-12-03 | 上海佐竹冷热控制技术有限公司 | A high dynamic response water temperature control method and device |
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Application publication date: 20151209 |