CN106768495A - A kind of commercial circulation heat pump water heater performance testing device and method of testing - Google Patents
A kind of commercial circulation heat pump water heater performance testing device and method of testing Download PDFInfo
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- CN106768495A CN106768495A CN201710042453.4A CN201710042453A CN106768495A CN 106768495 A CN106768495 A CN 106768495A CN 201710042453 A CN201710042453 A CN 201710042453A CN 106768495 A CN106768495 A CN 106768495A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 313
- 238000012360 testing method Methods 0.000 title claims abstract description 113
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000011017 operating method Methods 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 230000001052 transient effect Effects 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000011056 performance test Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 230000005619 thermoelectricity Effects 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000008676 import Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
- G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
- G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval
- G01K17/12—Indicating product of flow and temperature difference directly or temperature
Abstract
The present invention relates to a kind of commercial circulation heat pump water heater performance testing device and method of testing.Test device includes：Water inlet temperature element, delivery port temperature element, are respectively arranged at the entery and delivery port of tested machine, inflow temperature, leaving water temperature for testing tested machine；Triple valve, its first entrance is connected with the outlet pipeline of tested machine, and its second entrance is connected with thermostatted water inlet pipeline, and its outlet is connected through the inlet pipeline of standard water tank with standard water tank；Flowmeter, is arranged on the inlet pipeline between triple valve and standard water tank；Water pump, is arranged on the outlet pipeline of standard water tank, the water inlet for heated medium water to be delivered to tested machine.The method for testing commercial circulation heat pump water heater performance using above-mentioned test device includes preparation process, test operating procedure and measuring and calculation step.The test device and method of testing that the present invention is provided reduce disturbing factor, can accurately measure the heat pump heating capacity of commercial circulation heat pump water heater.
Description
Technical field
The present invention relates to a kind of commercial circulation heat pump water heater performance testing device and method of testing, it is mainly used in commercialization and follows
Ring Teat pump boiler aptitude tests, belong to air-conditioning and technical field of heat pumps.
Background technology
Teat pump boiler is similar with air-conditioning, and simply heat transfer medium is water, and the heat of its absorbent refrigeration system condenser is obtained
Hot water.The test philosophy of Teat pump boiler is to heat water and heat time by the tested Teat pump boiler of test to calculate heat
The heating capacity of pump water heater.Teat pump boiler is divided into four classes：Heated type, commercial circulating heating type, a Domestic circulating heated type
With family expenses static state heated type.The method of testing of the commercial circulation heat pump water heater of standard GB/T 21362-2008 regulations is at present
With standard water tank analog subscriber water tank, arrangement in standard water tank and tested machine, testing standard water tank is connected by pipeline, water pump
Used as test water temperature, because the temperature is measured in tested machine import and export, standard is required 8 RTD mean temperatures
The amount of stored heat of leaking heat and water tank is added on the basis of measured heating capacity as the final of commercial circulation heat pump water heater
Heating capacity.
The method of testing used test device of the commercial circulation heat pump water heater of current standard GB/T 21362-2008 regulations
As depicted in figs. 1 and 2.Fig. 1 is the test device schematic diagram of the Teat pump boiler for providing water pump, and Fig. 2 is the heat for not providing water pump
The test device schematic diagram of pump water heater, wherein, 1 is tested unit (tested machine), and 8 is water pump, and 7 is standard water tank, and 9 is temperature
Meter；Tested machine 1 is connected with standard water tank 7, water pump 8 by pipeline.This method of testing and test device are due to pipeline and mark
The influence of quasi- water tank leakage heat, inherently has larger test uncertainty, so measurement error is larger, uniformity is poor.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of commercial circulation heat pump water heater test device, should
Device can test the ability (i.e. heat pump heating capacity) of commercial circulation heat pump water heater, the test device energy using direct method of testing
The disturbing factor in test process is reduced, it is possible to accurately measuring the heat pump heating capacity of commercial circulation heat pump water heater.This hair
Bright another object is to provide a kind of commercial circulation heat pump water heater method of testing.
To achieve the above object, the present invention uses following technical scheme：
A kind of commercial circulation heat pump water heater performance testing device, the test device includes：Delivery port temperature element, three
Port valve, flowmeter, standard water tank, water pump, water inlet temperature element and connecting line；Wherein,
The delivery port temperature element is arranged at the water outlet of tested machine, and water temperature is gone out for test the tested machine
Degree, the tested machine is the commercial circulation heat pump water heater；
The first entrance of the triple valve is connected with the outlet pipeline of the tested machine, the second entrance of the triple valve with
Outside thermostatted water inlet pipeline connection, the outlet of the triple valve through the standard water tank inlet pipeline and the standard water
Case is connected；
The flowmeter is arranged on the inlet pipeline between the triple valve and the standard water tank；
The standard water tank is used to store heated medium water；
The water pump is arranged on the outlet pipeline of the standard water tank, for the quilt that will be stored in the standard water tank
Heating WATER AS FLOW MEDIUM is delivered to the water inlet of the tested machine；
The water inlet temperature element is arranged at the water inlet of the tested machine, the water inlet for testing the tested machine
Temperature.
In above-mentioned test device, used as a kind of preferred embodiment, the test device also includes control system, the control
System processed is connected with the delivery port temperature element, flowmeter, water inlet temperature element；For Real-time Collection, record test number
According to, and specific heat according to the water under instantaneous mass flow, the mean temperature of instantaneous turnover coolant-temperature gage, instant water coming-in temperature and instantaneous
Leaving water temperature calculates the transient heat heat pump heating amount of the tested machine, and then obtains being tied to experiment from moment on-test by integrating
The heat pump heating capacity at beam moment, moment on-test be the tested machine inflow temperature be set initial temperature when when
Carve, the off-test moment is that the leaving water temperature of the tested machine is moment when setting end temp, and the setting is initial
Temperature is less than the setting end temp, and more than the temperature of the thermostatted water injected from the thermostatted water inlet pipeline.
In above-mentioned test device, used as a kind of preferred embodiment, the temperature of the thermostatted water is 4 DEG C~7 DEG C.
In above-mentioned test device, used as a kind of preferred embodiment, the control system is also connected with the triple valve, when
When water injection rate reaches setting value, to the control system feedback control signal, the control system is according to for the flowmeter
Control signal closes the second entrance of the triple valve.
In above-mentioned test device, used as a kind of preferred embodiment, the delivery port temperature element and the water inlet are surveyed
Warm element is thermal resistance, thermoelectricity occasionally thermometer.
A kind of commercial circulation heat pump water heater performance test methods, using above-mentioned commercial circulation heat pump water heater performance test
Device, methods described includes：
Preparation process, adjusts and controls the environment temperature in test room for set environment temperature, opens the triple valve
Second entrance, the thermostatted water of preset capacity flow through successively the thermostatted water inlet pipeline, the triple valve, the flowmeter and
Injected after the inlet pipeline of the standard water tank in the standard water tank, the preset capacity is measured by the flowmeter；
Test operating procedure, opens the first entrance of the triple valve, opens the water pump and the tested machine, the mark
Water in quasi- water tank carries out reciprocation cycle up to the leaving water temperature of the tested machine reaches setting end temp according to endless form,
Endless form is：Water in the standard water tank enters institute after flowing through the outlet pipeline of the standard water tank, the water pump successively
State in tested machine and be heated, the water after being heated flows through the outlet pipeline of the tested machine, the triple valve and described successively again
Enter in the standard water tank after the inlet pipeline of standard water tank；
Measuring and calculation step, according to formulaThe heating capacity of the tested machine is calculated, wherein, Q is tested
The heating capacity of machine, T1The inflow temperature for being the tested machine is moment when setting initial temperature, T2It is the water outlet of the tested machine
Temperature is moment when setting end temp, and T is run time, i.e., from T1To T2Time, QiIt is that the instantaneous of tested machine heats
Amount, Qi=msi×Cpi×(touti-tini), msiIt is instantaneous mass flow, CpiBe instantaneously turnover coolant-temperature gage mean temperature under
The specific heat of water, toutiIt is instantaneous leaving water temperature, tiniIt is instant water coming-in temperature.
In above-mentioned method of testing, used as a kind of preferred embodiment, the temperature of the thermostatted water is initial less than the setting
Temperature.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) method of testing of existing standard, because test lead is away from tested machine, the influence of leaking heat is larger, and test is inaccurate
Really；The test device that the present invention is provided arranges temperature measuring equipment in tested machine water inlet pipe and water outlet pipe, in water inlet arrangement water pump, in delivery port
Arrangement flowmeter, the heat pump heating capacity of tested machine is directly calculated by measured import and export water temperature and water-carrying capacity, be instead of existing
Have in technology with the mean temperature of standard water tank as test water temperature way, due to reducing disturbing factor in test process,
It is possible to accurately measuring the heat pump heating capacity of commercial circulation heat pump water heater.
(2) test device that the present invention is provided uses triple valve and flowmeter, on the one hand can more accurately control water filling
Amount, on the other hand can be ensured before water temperature reaches 15 DEG C by controlling the inflow temperature of thermostatted water to be relatively low temperature
Operating mode again stablize and without cooling device；The test device simple structure that the present invention is provided, it is easy to operate.
Brief description of the drawings
Fig. 1 is the test device schematic diagram of the Teat pump boiler of the offer water pump of GB/T 21362-2008 regulations；
Fig. 2 is the test device schematic diagram of the Teat pump boiler for not providing water pump of GB/T 21362-2008 regulations；
Fig. 3 is the commercial circulation heat pump water heater test device schematic diagram in the preferred embodiment of the present invention.
Wherein, the tested machines of 1-, 2- delivery port temperature elements, 3- water inlet temperature elements, 4- triple valves, 5- flowmeters, 6-
Thermostatted water inlet pipeline, 7- standard water tanks, 8- water pumps, 9- thermometers.
Specific embodiment
Technical scheme is described in further detail by embodiment below in conjunction with accompanying drawing.
The present invention provides a kind of commercial circulation heat pump water heater test device, referring to Fig. 3, the test device include by from
The delivery port temperature element that the pipeline of water inlet of the delivery port of tested machine 1 (i.e. Teat pump boiler) to tested machine 1 is sequentially connected
2nd, triple valve 4, flowmeter 5, standard water tank 7, water pump 8, water inlet temperature element 3, that is, be tested machine 1 outlet pipeline one end with
The delivery port connection of tested machine 1, the other end is connected through triple valve 4 with the inlet pipeline of standard water tank 7；The water inlet pipe of tested machine 1
The one end on road is connected with the water inlet of tested machine 1, and the other end is connected through water pump 8 with the outlet pipeline of standard water tank 7, in standard water
Flowmeter 5 is provided with the inlet pipeline of case 7, flowmeter 5 is provided with out near the side of triple valve 4 in the water outlet of tested machine 1
Mouth of a river temperature element 2, water inlet temperature element 3 is provided with the water inlet of tested machine 1.Above part is carried out one by one below
Explanation.
Delivery port temperature element 2 and water inlet temperature element 3, are separately mounted to delivery port, the water inlet close to tested machine 1
Position, the inflow temperature t of the tested machine 1 of the test of water inlet temperature element 2in, the test of delivery port temperature element 3 tested machine 1 goes out
Coolant-temperature gage tout.Temperature element can be thermal resistance such as platinum resistance thermometer sensor, etc., or thermocouple such as nickel chromium triangle-CopperNickel thermocouple etc.,
Can also be thermometer such as bimetallic thermometer, glass-stem thermometer, semiconductor thermistor thermometer etc..
Triple valve 4, is arranged between delivery port temperature element 2 and flowmeter 5, for connecting the He of delivery port temperature element 2
Pipeline between flowmeter 5, while be also connected with outside thermostatted water inlet pipeline 6, i.e., the first entrance of triple valve 4 with it is tested
The other end connection of the outlet pipeline of machine 1, the second entrance of triple valve 4 is connected with thermostatted water inlet pipeline 6, and triple valve 4 goes out
Mouth is connected through the inlet pipeline of standard water tank 7 with standard water tank 7.In thermostatted water inlet pipeline 6 temperature of the water of circulation for 4 DEG C~
7 DEG C, such as 4 DEG C, 4.5 DEG C, 5 DEG C, 6 DEG C, 6.5 DEG C, 7 DEG C.Triple valve 4 has two kinds of work in the test device that the present invention is provided
State：When test before from thermostatted water inlet pipeline 6 to test device water filling when, i.e., when to 7 water filling of standard water tank, triple valve 4 should
The pipeline (or outlet pipeline of tested machine 1) that closing is connected with the delivery port of tested machine 1, that is, close the first of triple valve 4 and enter
Mouthful, the second entrance of triple valve 4 is opened, and cause that thermostatted water inlet pipeline 6 is communicated with standard water tank 7, so that thermostatted water
Thermostatted water inlet pipeline 6 can be passed through enter test device, i.e. constant temperature water energy to pass through thermostatted water inlet pipeline 6 through the of triple valve 4
The outlet of two entrances, triple valve 4, into the inlet pipeline of standard water tank 7, eventually enters into standard water tank 7；After water filling is finished, three
Port valve 4 should close thermostatted water inlet pipeline 6, that is, close the second entrance of triple valve 4, open the first entrance of triple valve 4, and make
The outlet pipeline that machine 1 must be tested is communicated with standard water tank 7, so that the heated medium water warp of the delivery port discharge from tested machine 1
Outlet pipeline, the first entrance of triple valve 4, the outlet of triple valve 4 of tested machine 1, into the inlet pipeline of standard water tank 7, most
Eventually enter standard water tank 7, in other words, now be tested machine 1, delivery port temperature element 2, triple valve 4, flowmeter 5, standard water tank 7,
Water pump 8, water inlet temperature element 2 are linked together by water lines, and heated medium water will be in this water lines in test process
Middle circulation.
Flowmeter 5, is arranged between triple valve 4 and standard water tank 7, and it acts on two kinds of working condition phases with triple valve 4
Adapt to, a water injection rate injected to test device from thermostatted water inlet pipeline 6 when being and starting for measurement and Control release, this hair
Flowmeter 5 has automatic accumulating function in bright embodiment, and water injection rate will be automatically calculated after water filling is started, it is ensured that water injection rate is accurate
Really；Two is to measure circulating water flow in follow-up measurement experiment.Flowmeter 5 is mass flowmenter in the embodiment of the present invention；Water filling
Preceding flowmeter 5 resets and sets integrated flow, when water injection rate reaches setting value (i.e. integrated flow), control system hereafter
Will turn off water route, it is ensured that accurate water injection rate is accurate.In the present invention flowmeter 5 can also without automatic accumulating function, but
Realized by control system hereafter, flow value when specially water filling starts computer-chronograph or PLC collection beginnings simultaneously calculates tired
Meter flow, when integrated flow reaches setting value, the path closed between triple valve 4 and thermostatted water inlet pipeline 6.
Because being needed for commercial circulating heat pump water heater, before test corresponding to standard water tank one hour flow of injection
Water, the value participates in the calculating of final heat pump heating capacity, and its accuracy directly affects test result.But standard is simultaneously not known rule
It is fixed how water filling because water injection rate is comprising the water in pipeline, if only determining injection by the fluid level scale value of water tank
Water in water tank is come to determine water injection rate be inaccurate.Water filling port (or referred to as water supplement port) is set in compared to existing technology
In the Teat pump boiler performance testing device on water tank, directly being provided from the design of water tank moisturizing, the present invention, thermostatted water water inlet
The water of precise control injection test device (could also say that standard water tank) is capable of in the setting of pipeline 6, triple valve 4 and flowmeter 5
Amount.
Standard water tank 7 is used to store heated medium water in the present invention, unrelated with heat pump heating capacity is calculated.
The heated medium water that water pump 8 is used to be stored in standard water tank 7 is delivered to the water inlet of tested machine, so as to drive
Dynamic circulation of the heated medium water in water lines.
Preferably, test device also includes control system, control system and delivery port temperature element 2, flowmeter 5, water inlet
Mouth temperature element 3 is connected；For Real-time Collection, record test data, including delivery port temperature element 2 measure leaving water temperature,
Inflow temperature and test period that flow that flowmeter 5 is measured, water inlet temperature element 3 are measured, test period is from water inlet
Temperature tinThe initial temperature for reaching setting starts (i.e. moment on-test) until leaving water temperature toutReach the end temp of setting
When the time used by (off-test moment), and by calculating the instantaneous heat pump of commercial circulation heat pump water heater performance testing device
Heating capacity, and then by integrating the heat pump heating capacity that integrating obtains from moment on-test to the off-test moment.Above-mentioned control
System can be computer or PLC (Programmable Logic Controller, programmable logic controller (PLC)).Setting
Initial temperature, the end temp of the setting relevant regulations that are referred in standard GB/T 21362-2008.For plain edition heat
Pump water heater, sets initial temperature as 15 DEG C, sets end temp as 55 DEG C；For low form Teat pump boiler, setting is initial
Temperature is 9 DEG C, sets end temp as 55 DEG C.The present invention provide embodiment in the initial temperature for setting be 15 DEG C, if
Fixed end temp be 55 DEG C as a example by commercial water circulating pump water heater performance test methods are illustrated.
It is highly preferred that control system is also connected with triple valve 4, when water injection rate reaches setting value, flowmeter 5 is to control
System feedback control signal, now control system according to control signal close triple valve 4 second entrance.In specific embodiment
In, triple valve can be connected with computer or PLC, and when water injection rate reaches setting value, flowmeter 5 is to computer or PLC feedback controls
Signal processed, this computer-chronograph or PLC close the second entrance of triple valve according to control signal.
The preferred embodiments of the present invention provider is as follows with the application method of circulation heat pump water heater test device：Before test
Need to inject a certain amount of thermostatted water to test device, the pipeline being connected with tested machine delivery port closed by triple valve 4 first,
So that thermostatted water inlet pipeline 6 is communicated with flowmeter 5, by thermostatted water inlet pipeline 6 to test device water filling, flowmeter 5
Automatic accumulating function will automatically calculate water injection rate, it is ensured that water injection rate is accurate；
After water filling is completed, triple valve 4 will close thermostatted water inlet pipeline 6, switch to the outlet pipeline and mark of tested machine 1
Quasi- water tank 7 is communicated；
During into test mode, heat-carrying agent water exits into water pump 8 from standard water tank 7, by water inlet temperature element 2
Enter into tested machine 1, the inflow temperature t of the tested machine 1 of the test of water inlet temperature element 2in, water in tested machine by after heat exchange,
Temperature is raised and flowed out from the delivery port of tested machine 1, the leaving water temperature t of test tested machine 1 when flowing through delivery port temperature element 3out,
Triple valve 4, flowmeter 5 are again passed through, by the test loop water quality flow M of flowmeter 5, into standard water tank 7, is so back and forth followed
Ring, until the leaving water temperature of tested machine 1 reaches design temperature, terminates experiment.Test period is from inflow temperature tinReach setting
Initial temperature start, leaving water temperature toutThe end temp for reaching setting terminates.
Calculate (specific heat × (the water outlet of water under instantaneous heating capacity=mass flow × import and export mean temperature of instantaneous heating capacity
Temperature-inflow temperature)), then integral heat heat pump heating amount of the integrating from moment on-test to this period at off-test moment.
It is described in detail as a example by the commercial circulating heat pump hydrophone of plain edition below with specified heating capacity as 30kW.
Environment temperature adjusted before on-test and controls to adjust and control in 15 DEG C, thermostatted water in 20 DEG C, ambient humidity
Lower water temperature and control at 7 DEG C or so.Tested machine 1 is placed in environment temperature and the controllable test room of humidity, and with
Inlet pipeline and the outlet pipeline connection of test device.By calculating, required water injection rate should be 0.646m3, the water at 7 DEG C
Density be 999.9kg/m3, so water filling quality is approximately 646kg.Triple valve 4 is closed and the outlet pipeline of tested machine 1
Connection, opens the connection of the inlet pipeline with thermostatted water inlet pipeline 6 and standard water tank 7, from the injection of thermostatted water inlet pipeline 67
DEG C thermostatted water, mass flowmenter 5 resets before water filling, and sets integrated flow for 646kg, when water injection rate reaches 646kg, matter
The amount sending signal of flowmeter 5, system will turn off water route, it is ensured that accurate water filling.
After water filling terminates, triple valve 4 is closed into the path with thermostatted water inlet pipeline 6, open the outlet pipe with tested machine 1
The connection on road, is tested machine 1, delivery port temperature element 2, triple valve 4, flowmeter 5, standard water tank 7, water pump 8, water inlet thermometric unit
Part 2 is linked together by water lines.Start tested machine 1, water pump 8 etc. and start test.Heated medium water will be in this water route
By circulating-heating.
When tested machine 1 starts to start, the temperature and humidity of environment can fluctuate --- and first reduce and raise again, then tend towards stability,
From inlet water temperature (being measured by water inlet temperature element 3), 7 DEG C were heated in 15 DEG C of this periods, and environment temperature and humidity can be again
Reach stabilization, record inlet water temperature (i.e. inflow temperature) be 15 DEG C of this moment as moment on-test, calculating is opened from this moment
Begin, as the operation water temperature of tested machine 1 can gradually rise, until exit water temperature (being measured by delivery port temperature element 2) reaches 55
DEG C this moment as the off-test moment, from the flow of on-test Real-time Collection mass flowmenter 5 simultaneously.
The formula for calculating transient heat heat pump heating amount is as follows：
Qi=msi×Cpi×(touti-tini)
In formula：QiIt is transient heat heat pump heating amount, unit:kW；msiIt is instantaneous mass flow, unit：kg/h；CpiTo enter herein
The specific heat of the water under outlet mean temperature, unit：KJ/ (kg DEG C), it is instant water coming-in temperature and wink that this imports and exports mean temperature
When leaving water temperature mean temperature, it is equal to (touti+tini)/2；toutiIt is instantaneous leaving water temperature, unit：℃；tiniInstantaneously to enter
Coolant-temperature gage, unit：℃.
Then heat pump heating capacity Q is calculated according to following formula：
In formula, T1It is moment on-test, T2It is off-test moment, QiIt is instantaneous heating capacity, T is run time, that is, try
Test the time.
During actual test, one group of data can be gathered every certain acquisition interval, such as acquisition interval is 10s, then 10s is adopted
Collect one group of data, and calculate corresponding transient heat heat pump heating amount, integrating is from moment on-test to the heat pump at off-test moment
Heating capacity.
In the present embodiment, the heat pump heating capacity of the integrating for measuring is 30.25kW；And the standard water tank specified with standard is tested
The heat pump heating capacity that method (GB/T 21362-2008) is measured is 27.6kW, and the heat demarcated with caliberating device is 30.1kW.Can
See that the heat pump water-heating machine heating capacity that the test device of present invention offer is measured is more accurate.
Above example is only a kind of present invention implementation method therein, and its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention
Enclose.
Claims (7)
1. a kind of commercial circulation heat pump water heater performance testing device, it is characterised in that the test device includes：Delivery port is surveyed
Warm element, triple valve, flowmeter, standard water tank, water pump, water inlet temperature element and connecting line；Wherein,
The delivery port temperature element is arranged at the water outlet of tested machine, the leaving water temperature for testing the tested machine, institute
Tested machine is stated for the commercial circulation heat pump water heater；
The first entrance of the triple valve is connected with the outlet pipeline of the tested machine, second entrance and the outside of the triple valve
The connection of thermostatted water inlet pipeline, the outlet of the triple valve connects through the inlet pipeline of the standard water tank with the standard water tank
Connect；
The flowmeter is arranged on the inlet pipeline between the triple valve and the standard water tank；
The standard water tank is used to store heated medium water；
The water pump is arranged on the outlet pipeline of the standard water tank, for will be stored in being heated in the standard water tank
WATER AS FLOW MEDIUM is delivered to the water inlet of the tested machine；
The water inlet temperature element is arranged at the water inlet of the tested machine, and water temperature is entered for test the tested machine
Degree.
2. test device according to claim 1, it is characterised in that the test device also includes control system, the control
System processed is connected with the delivery port temperature element, flowmeter, water inlet temperature element；For Real-time Collection, record test number
According to, and specific heat according to the water under instantaneous mass flow, the mean temperature of instantaneous turnover coolant-temperature gage, instant water coming-in temperature and instantaneous
Leaving water temperature calculates the transient heat heat pump heating amount of the tested machine, and then obtains being tied to experiment from moment on-test by integrating
The heat pump heating capacity at beam moment, moment on-test be the tested machine inflow temperature be set initial temperature when when
Carve, the off-test moment is that the leaving water temperature of the tested machine is moment when setting end temp, and the setting is initial
Temperature is less than the setting end temp, and more than the temperature of the thermostatted water injected from the thermostatted water inlet pipeline.
3. test device according to claim 2, it is characterised in that the temperature of the thermostatted water is 4 DEG C~7 DEG C.
4. test device according to claim 2, it is characterised in that the control system is also connected with the triple valve, when
When water injection rate reaches setting value, to the control system feedback control signal, the control system is according to for the flowmeter
Control signal closes the second entrance of the triple valve.
5. the test device according to any one of claim 1-4, it is characterised in that the delivery port temperature element and described
Water inlet temperature element is thermal resistance, thermoelectricity occasionally thermometer.
6. a kind of commercial circulation heat pump water heater performance test methods, using commercial circulation heat pump water heater described in claim 1
Performance testing device, methods described includes：
Preparation process, adjusts and controls environment temperature in test room for set environment temperature, opens the of the triple valve
Two entrances, the thermostatted water of preset capacity flows through the thermostatted water inlet pipeline, the triple valve and the standard water tank successively
Injected after inlet pipeline in the standard water tank, the preset capacity is measured by the flowmeter；
Test operating procedure, opens the first entrance of the triple valve, opens the water pump and the tested machine, the standard water
Water in case carries out reciprocation cycle up to the leaving water temperature of the tested machine reaches setting end temp according to endless form, circulates
Mode is：Water in the standard water tank enters the quilt after flowing through the outlet pipeline of the standard water tank, the water pump successively
It is heated in survey machine, the water after being heated flows through outlet pipeline, the triple valve and the standard of the tested machine successively again
Enter in the standard water tank after the inlet pipeline of water tank；
Measuring and calculation step, according to formulaThe heating capacity of the tested machine is calculated, wherein, Q is the system of tested machine
Heat, T1The inflow temperature for being the tested machine is moment when setting initial temperature, T2The leaving water temperature for being the tested machine is
At moment during setting end temp, T is run time, i.e., from T1To T2Time, QiIt is the instantaneous heating capacity of tested machine, Qi=
msi×Cpi×(touti-tini), msiIt is instantaneous mass flow, CpiIt is the ratio of the water under the mean temperature for instantaneously passing in and out coolant-temperature gage
Heat, toutiIt is instantaneous leaving water temperature, tiniIt is instant water coming-in temperature.
7. method of testing according to claim 6, it is characterised in that the temperature of the thermostatted water is less than the initial temperature of the setting
Degree.
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| CN107131978A (en) * | 2017-06-13 | 2017-09-05 | 中标能效科技（青岛）有限公司 | The caliberating device and scaling method of commercial circulation heat pump water heater test device |
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