CN107063735A - A kind of performance test experiment table of micro-channel evaporator - Google Patents
A kind of performance test experiment table of micro-channel evaporator Download PDFInfo
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- CN107063735A CN107063735A CN201710437616.9A CN201710437616A CN107063735A CN 107063735 A CN107063735 A CN 107063735A CN 201710437616 A CN201710437616 A CN 201710437616A CN 107063735 A CN107063735 A CN 107063735A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 23
- 238000011056 performance test Methods 0.000 title claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims abstract description 121
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of performance test experiment table of micro-channel evaporator, including liquid storing barrel, the refrigerant outlet of the liquid storing barrel left end is connected by a turbine flowmeter with the refrigerant inlet of a working medium pump right-hand member；The refrigerant outlet of the working medium pump left end is connected with the refrigerant inlet of the preheating cabinet right-hand member, and the refrigerant outlet of the preheating cabinet left end is connected by the first stop valve with the refrigerant inlet of a micro-channel evaporator right-hand member bottom；The refrigerant outlet on micro-channel evaporator right-hand member top is connected by the second stop valve with the refrigerant inlet at the top of a double pipe heat exchanger, and the refrigerant outlet of double pipe heat exchanger bottom is connected with the refrigerant inlet of the liquid storing barrel right-hand member；Micro-channel evaporator is located inside a hollow, sealed air channel.The present invention can the effectively multi-faceted detection of the performance progress to micro-channel evaporator, the reliable heat exchange property for grasping micro-channel evaporator, it is ensured that the refrigeration performance stability of whole refrigeration system.
Description
Technical field
The present invention relates to refrigeration technology field, more particularly to a kind of performance test experiment table of micro-channel evaporator.
Background technology
At present, the evaporator in refrigeration system is generally the classes such as bushing type evaporator, shell-and-tube evaporator, finned evaporator
Type, the evaporator of these types has that refrigerant charge is big, processing consumable quantity is big, the low shortcoming of heat exchange efficiency.And and this
Formation is substantially contrasted, micro-channel evaporator as a kind of New Evaporator, its have small volume, it is lightweight, using refrigeration
Agent is few, good effect of heat exchange the advantages of, therefore expanded be in recent years applied to air conditioner refrigerating field.
For the micro-channel evaporator in refrigeration system, gas liquid two-phase flow is mutually dry in its microchannel having
Disturb, wherein the refrigerant gasified tends to interfere with liquid refrigerant flowing, so that the heat transfer effect of micro-channel evaporator is easily influenceed,
Cause the heat exchange property of micro-channel evaporator unstable, and then have impact on the refrigeration performance stability of whole refrigeration system.
But, there is presently no a kind of device, the performance that it can be effectively to micro-channel evaporator is detected, reliably
The heat exchange property of micro-channel evaporator is grasped on ground, so as to ensure the refrigeration performance stabilization of whole refrigeration system being ultimately formed
Property.
The content of the invention
In view of this, it is an object of the invention to provide a kind of performance test experiment table of micro-channel evaporator, it can have
Effect ground carries out multi-faceted detection to the performance of micro-channel evaporator, reliably grasps the heat exchange property of micro-channel evaporator, from
And ensure the refrigeration performance stability of whole refrigeration system being ultimately formed, be conducive to extensive popularization and application, with great
Production practices meaning.
Therefore, the invention provides a kind of performance test experiment table of micro-channel evaporator, including liquid storing barrel, the liquid storage
The refrigerant outlet of bucket left end is connected by a turbine flowmeter with the refrigerant inlet of a working medium pump right-hand member；
The refrigerant outlet of the working medium pump left end is connected with the refrigerant inlet of the preheating cabinet right-hand member, the preheating
The refrigerant outlet of case left end is connected by the first stop valve with the refrigerant inlet of a micro-channel evaporator right-hand member bottom；
The refrigerant outlet on the micro-channel evaporator right-hand member top passes through the second stop valve and a double pipe heat exchanger
The refrigerant inlet at top is connected, the refrigeration of the refrigerant outlet of described sleeve pipe formula exchanger base and the liquid storing barrel right-hand member
Agent import is connected；
The micro-channel evaporator is located inside a hollow, sealed air channel.
Wherein, the surface of the micro-channel evaporator is sequentially arranged at intervals with humidifier 8, air cooling from top to bottom
Device, electric heater and blower fan.
Wherein, the humidifier, aerial cooler, electric heater and blower fan are also adjusted with same Temperature and Humidity Control respectively
Device is connected by signal wire.
Wherein, between the refrigerant inlet of the refrigerant outlet of described sleeve pipe formula exchanger base and the liquid storing barrel right-hand member
Connecting line on be provided with a temperature sensor and a pressure sensor；
Connecting line between the refrigerant inlet of the refrigerant outlet of the working medium pump left end and the preheating cabinet right-hand member
On be provided with a temperature sensor and a pressure sensor；
On connecting line between the refrigerant inlet of first stop valve and the micro-channel evaporator right-hand member bottom
It is also equipped with a temperature sensor and a pressure sensor；
The both sides up and down of the micro-channel evaporator are respectively arranged with a pressure sensor, an air speed measuring apparatus
With a Temperature Humidity Sensor；
Set on the connecting line between refrigerant inlet at the top of second stop valve and described sleeve pipe formula heat exchanger
There are a temperature sensor, a pressure sensor and a gas mass flow gauge；
The pressure sensor, air speed measuring apparatus and Temperature Humidity Sensor are located inside the air channel.
Wherein, the air speed measuring apparatus and Temperature Humidity Sensor in the air channel pass through signal wire and the humiture control respectively
Adjuster processed is connected.
Wherein, a drip tray is provided with immediately below the micro-channel evaporator, the drip tray is located at the air channel
The inside；
The bottom centre position of the drip tray is connected by a drainpipe with a steel ladle.
Wherein, the steel ladle is located at the top of an electronic scale.
Wherein, the right side upper and lower ends of described sleeve pipe formula heat exchanger have chilled water outlet and chilled water import respectively.
Wherein, the liquid storing barrel, turbine flowmeter, working medium pump, preheating cabinet, the first stop valve, the second stop valve and set
Pipe heat exchanger is respectively positioned on the outside in the air channel.
The technical scheme that the present invention is provided more than, it is compared with prior art, micro- logical the invention provides one kind
The performance test experiment table of road evaporator, the performance that it can be effectively to micro-channel evaporator carries out multi-faceted detection, can
The heat exchange property of micro-channel evaporator is grasped by ground, so as to ensure the refrigeration performance stabilization of whole refrigeration system being ultimately formed
Property, be conducive to extensive popularization and application, be of great practical significance.
Brief description of the drawings
A kind of structural representation of the performance test experiment table for micro-channel evaporator that Fig. 1 provides for the present invention；
In figure, 1 is liquid storing barrel, and 2 be turbine flowmeter, and 3 be working medium pump, and 4 be preheating cabinet, and 51 be the first stop valve, and 52 are
Second stop valve, 6 be micro-channel evaporator, and 7 be double pipe heat exchanger, and 8 be humidifier, and 9 be aerial cooler, and 10 be electrical heating
Device, 11 be blower fan, and 12 be drip tray, and 13 be steel ladle, and 14 be electronic scale, and 15 be air channel, and 16 be Temperature and Humidity Control adjuster；
17 be temperature sensor, and 18 be pressure sensor, and 19 be air speed measuring apparatus, and 20 be Temperature Humidity Sensor, and 21 be gas
Weight flowmeter, 30 be drainpipe.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings with embodiment to this
Invention is described in further detail.
It is described the invention provides a kind of performance test experiment table of micro-channel evaporator, including liquid storing barrel 1 referring to Fig. 1
The refrigerant outlet of the left end of liquid storing barrel 1 is connected by a turbine flowmeter 2 with the refrigerant inlet of a right-hand member of working medium pump 3
(by pipeline)；
The refrigerant outlet of the left end of working medium pump 3 is connected with the refrigerant inlet of the right-hand member of preheating cabinet 4, described pre-
The refrigerant outlet of the left end of hot tank 4 passes through the first stop valve 51 and the refrigerant inlet of a right-hand member bottom of micro-channel evaporator 6
It is connected；
The refrigerant outlet on the right-hand member top of micro-channel evaporator 6 passes through the second stop valve 52 and a casing type heat exchanging
The refrigerant inlet at the top of device 7 is connected, the refrigerant outlet of the bottom of described sleeve pipe formula heat exchanger 7 and the right-hand member of liquid storing barrel 1
Refrigerant inlet be connected；
The micro-channel evaporator 6 is located at a hollow, sealed the inside of air channel 15.As shown in figure 1, the liquid storing barrel 1,
Turbine flowmeter 2, working medium pump 3, preheating cabinet 4, the first stop valve 51, the second stop valve 52 and double pipe heat exchanger 7 are respectively positioned on
The outside in the air channel 15.
In the present invention, it is necessary to which explanation, the liquid storing barrel 1 is used for the refrigerant for storing liquid.The refrigerant of liquid
Entered by pipeline in the turbine flowmeter 2, the turbine flowmeter 2 is used to measure the left end bottom of micro-channel evaporator 6
(flow is the system that line cross section is flowed through in the unit time to the flow of the refrigerant of liquid in refrigerant inlet institute connecting line
Refrigerant volume flow, the refrigerant volume flow can finally be calculated multiplied by the density with refrigerant working medium under relative status
The mass flow of the refrigerant of line cross section is flowed through in the unit interval).The refrigerant of liquid continues through pipeline and enters institute
Working medium pump 3 is stated, power is provided for the refrigerant circulation in whole pipeline by the working medium pump 3, while working medium pump 3 can be passed through
Change the refrigerant flow in pipeline, so as to meet the different volumetric refrigerant flows required for test.The refrigerant of liquid after
Continuous to be entered by pipeline in the preheating cabinet 4, the preheating cabinet 4 can have any one of resistive heater for tank surface
Hollow, sealed casing, the liquid refrigerant that the preheating cabinet 4 is used in heating compartment reaches the dry of required refrigerant
Degree condition.
In addition, the first stop valve 51, the second stop valve 52, are respectively used to, when changing different micro-channel evaporators, lead to
The first stop valve 51 of closing and second stop valve 52 the two valves are crossed, leakage of refrigerant is prevented.The refrigerant of liquid passes through pipe
Road enters in the micro-channel evaporator 6, reaches that the liquid refrigerant of default mass dryness fraction condition exists by what the preheating cabinet 4 was preheated
The micro-channel evaporator 6 is evaporated, so as to produce gaseous refrigerant, gaseous refrigerant continues through pipeline and enters described
Double pipe heat exchanger 7,, can be by gaseous refrigerant liquid under the cooling effect of cooling water in described sleeve pipe formula heat exchanger 7
It is melted into the refrigerant of liquid.
Referring to Fig. 1, implement, the right side upper and lower ends of described sleeve pipe formula heat exchanger 7 have chilled water outlet respectively
72 and chilled water import 71, chilled water is flowed into from the chilled water import 71 of double pipe heat exchanger 7, from the cold of double pipe heat exchanger 7
Freezing water outlet 72 flows out, so that the refrigerant flowed through to pipeline in double pipe heat exchanger 7 plays good heat transfer effect.
It is shown in Figure 1, in the present invention, implement, the surface of the micro-channel evaporator 6 from top to bottom according to
Minor tick is provided with humidifier 8, aerial cooler 9, electric heater 10 and blower fan 11.
Wherein, the humidifier 8 can realize isothermal humidification, for carrying out humidification process, tool to the air in air channel 15
On body is realized, the humidifier 8 can use dry steam humidifier；
The aerial cooler 9 can be used for carrying out cooling processing to the air in air channel 15, implement, the air
Cooler 9 can use surface cooler；
The electric heater 10 such as can realize at the wet heating, for heating to air in air channel, implement
On, the electric heater 10 can use tubular electric heating；
The blower fan 11 is the blower fan for being provided with frequency converter, and the blower fan 11 can change the power supply of blower fan by frequency converter
Frequency, so as to change the air force of blower fan formation, is implemented, and the blower fan 11 can be the outer of model DKT12-45
The double air intake air-conditioning draught fans of rotor, the blower fan adapter converter.
Therefore, in the present invention, can by the humidifier 8, aerial cooler 9 and electric heater 10 and blower fan 11
Air intlet parameter, such as air themperature, humidity, air quantity in air channel 15 are adjusted, so as to test micro-channel evaporator 6 not
Heat exchange property under same inlet air Parameter Conditions.
It is shown in Figure 1, in the present invention, implement, the underface of the micro-channel evaporator 6 is provided with one
Drip tray 12, the drip tray 12 is located at the inside of air channel 15；
The bottom centre position of the drip tray 12 is connected by a drainpipe 30 with a steel ladle 13, described to contain
Bucket 13 is located at the outside in the air channel 15, and the drainpipe 30 runs through the bottom in the air channel 15.
It should be noted that the drip tray 12 is used to collect condensed water of the micro-channel evaporator 6 after defrost, and pass through
Drainpipe 30 imports steel ladle 13, and steel ladle 13 is used for collecting storage condensed water.
Implement, the steel ladle 13 is located at a top of electronic scale 14.Therefore, weighed by the electronic scale 14
Quality and the weighing steel ladle 13 quality load condensed water after of the steel ladle 13 in empty barrel, can be obtained cold
The quality of solidifying water.
Referring to Fig. 1, in the present invention, implement, the humidifier 8, aerial cooler 9, electric heater 10 and wind
Machine 11 can also be connected with same Temperature and Humidity Control adjuster 16 by signal wire respectively；
The Temperature and Humidity Control adjuster 16 is used for according to receiving the control instruction that user inputs, and is inputted according to user
Control instruction, correspondence controls the carrying out practically of the humidifier 8, aerial cooler 9, electric heater 10 and blower fan 11.
Implement, the Temperature and Humidity Control adjuster 16 can be believed temperature signal, humidity for any one
Number measure the temperature and humidity controller of control, for example can for the sharp automation Science and Technology Ltd. production of the prosperous control in Shenzhen type
Number be TH-808 temperature and humidity controller.
It should be noted that the control instruction of user's input can be directed to humidifier 8, sky for any one user input
The control instruction of Gas Cooler 9, electric heater 10 and blower fan 11.It (can also be aerial cooler to humidifier 8 that for example can be
9th, electric heater 10 or blower fan 11) be turned on or off control instruction, and (can also be aerial cooler to humidifier 8
9th, electric heater 10 or blower fan 11) humidification power increase or reduction control instruction.
For the present invention, it is necessary between explanation, the interconnected part of any two be connected by one section of pipeline
It is logical, as shown in Figure 1.
In the present invention, implement, refrigerant outlet and the liquid storing barrel 1 of the bottom of described sleeve pipe formula heat exchanger 7
A temperature sensor (T) 17 and a pressure sensor (P) are provided with connecting line between the refrigerant inlet of right-hand member
18；
Connecting tube between the refrigerant outlet of the left end of working medium pump 3 and the refrigerant inlet of the right-hand member of the preheating cabinet 4
A temperature sensor (T) 17 and a pressure sensor (P) 18 are provided with road；
Connecting line between the refrigerant inlet of the right-hand member bottom of first stop valve 51 and the micro-channel evaporator 6
On be also equipped with a temperature sensor (T) 17 and a pressure sensor (P) 18；
The both sides up and down of the micro-channel evaporator 6 are respectively arranged with a pressure sensor (P) 18, a wind speed
Measuring instrument (S) 19 and a Temperature Humidity Sensor (H) 20；
Set on connecting line between the refrigerant inlet at second stop valve 52 and the top of described sleeve pipe formula heat exchanger 7
It is equipped with a temperature sensor (T) 17, a pressure sensor (P) 18 and a gas mass flow gauge (M) 21.
Implement, the pressure sensor (P) 18, air speed measuring apparatus (S) 19 and Temperature Humidity Sensor (H) 20 are located at
The inside of air channel 15.
Implement, the air speed measuring apparatus (S) 19 and Temperature Humidity Sensor (H) 20 in the air channel 15 pass through letter respectively
Number line is connected with the Temperature and Humidity Control adjuster 16.
In the present invention, it is necessary to which explanation, two temperature sensors (T) 17 are located at outside the air channel 15, point
Applied in the connecting line for the entrance end (i.e. refrigerant inlet end and refrigerant outlet end) that micro-channel evaporator 6 Yong Yu not transmitted
If thermocouple temperature signal, respectively measure micro-channel evaporator 6 entrance end refrigerant temperature；
Four pressure sensors (P) 18, two of which, which is located at the outside of air channel 15 and is located at microchannel respectively, steams
The entrance end (i.e. refrigerant inlet end and refrigerant outlet end) of device 6 is sent out, the refrigerant for transmitting in installation pipeline
Pressure signal, and two other is located at the inside of air channel 15, the pressure for measuring micro-channel evaporator both sides about 6 is believed
Number；
Two air speed measuring apparatus (S) 19 are located in the air channel 15, are respectively used to measurement micro-channel evaporator about 6
The wind speed of both sides, is then sent to the Temperature and Humidity Control adjuster 16；
Two Temperature Humidity Sensors (H) 20 are located in the air channel 15, are respectively used on measurement micro-channel evaporator 6
The humiture of lower both sides air, is then sent to the Temperature and Humidity Control adjuster 16；
The gas mass flow gauge (M) 21 is located at the outside in the air channel 15, for measuring the right-hand member of micro-channel evaporator 6
(flow is transversal to flow through pipeline in the unit time for gaseous refrigerant flow in the refrigerant outlet institute connecting line on top
The mass flow of the gaseous refrigerant in face), in order to analyze the refrigerant evaporation capacity of micro-channel evaporator 6；
Wherein, Temperature Humidity Sensor (H) 20 is located in the air channel 15, for by the temperature-humidity signal in the air channel 15
Temperature and Humidity Control adjuster 16 is transferred to, Temperature and Humidity Control adjuster 16 can show that Temperature Humidity Sensor (H) 20 is transmitted in real time
Micro-channel evaporator both sides about 6 temperature-humidity signal so that user can according to Temperature Humidity Sensor (H) 20 transmit it is micro-
The microchannel evaporator difference of the humiture of both sides air and user in experiment test between humiture set in advance about 6,
The different control signal of input, to be sent respectively to corresponding humidifier 8, aerial cooler 9, electric heater 10 and blower fan 11,
So as to which corresponding humidification amount, heating amount and the amount of cooling water for controlling humidifier 8, aerial cooler 9 and electric heater 10 (is controlled respectively
The working condition of humidifier 8, aerial cooler 9 or electric heater 10), and accordingly control the air force of blower fan 11.For example,
The micro-channel evaporator that Temperature Humidity Sensor (H) 20 is transmitted about 6 the temperature of both sides air and user it is advance in experiment test
When difference between the temperature of setting is all higher than preset temperature difference (such as 2 DEG C), control signal control electric heater 10 is sent
Heating amount is reduced, and controls aerial cooler 9 to improve amount of cooling water；If in addition, the microchannel that Temperature Humidity Sensor (H) 20 is transmitted
Evaporator about 6 the difference of the temperature of both sides air and user in experiment test between predetermined temperature be all higher than presetting
During humidity differences (such as 5%), the control reduction humidification amount of humidifier 8.
In summary knowable to technical scheme, compared with prior art, a kind of micro-channel evaporator that the present invention is provided
Performance test experiment table, it can carry out comprehensive test to the performance of micro-channel evaporator.Following property can specifically be measured
Can parameter：
1st, refrigerant flow, fan delivery and wind speed, condensate flow, air intlet parameter can be tested to micro-channel evaporator
The influence of performance；
In the present invention, can by adjusting working medium pump 3, the rotating speed of blower fan 11 can change refrigerant flow, air survey wind
Amount and wind speed, the underface of test micro-channel evaporator 6 are provided with the condensation water quantity of a drip tray 12；By controlling humidifier
8th, the compound action of aerial cooler 9, the humidification amount of electric heater 10, amount of cooling water and heating amount, to adjust air intlet parameter
Deng the change of (such as air themperature, humidity, air quantity), test under Parameter Conditions of these changes, micro-channel evaporator 6 is changed
Hot property and partition characteristic；And refrigerant flow, fan delivery and wind speed, condensate flow, air intlet parameter can be obtained to micro-
The affecting laws of microchannel evaporator performance.
Implement, the present invention can be by testing the inlet and outlet pressure and temperature of micro-channel evaporator 6, and turbine
The flow parameter of flowmeter 2, can calculate the heat exchange amount for obtaining micro-channel evaporator 6, according to the heat exchange amount of micro-channel evaporator 6
Just, judge that the heat exchange property of micro-channel evaporator 6 is good and bad, certainly, the heat exchange amount of micro-channel evaporator 6 is higher, it is micro- logical
The heat exchange property of road evaporator 6 is better, and the heat exchange amount of micro-channel evaporator 6 is lower, and the heat exchange property of micro-channel evaporator 6 is just
It is poorer.
It should be noted that at present, for every kind of refrigerant, all with the hot physical property of corresponding, existing known refrigerant
Chart, in the hot physical property chart of refrigerant, have recorded the temperature value of each type refrigerant, pressure value and than between enthalpy
Corresponding relation (being specially one-to-one relationship).Therefore, for the present invention, it can enter by respectively positioned at micro-channel evaporator 6
Two pressure sensors (P) 18 of the port of export, respectively measurement obtains the pressure of the refrigerant of the entrance end of micro-channel evaporator 6
Value, and can respectively be surveyed by two temperature sensors (T) 17 respectively on the entrance end of micro-channel evaporator 6
Amount obtains the refrigerant temperature value of the entrance end of micro-channel evaporator 6, therefore, according to the specific of refrigerant used in the present invention
Type, and according to the refrigerant in the pressure value and temperature value of the entrance end of micro-channel evaporator 6, can be directly from refrigerant
Can be inquired about in hot physical property chart obtain the entrance end of micro-channel evaporator 6 refrigerant it is corresponding than enthalpy (i.e. unit respectively
The calorie value that quality refrigerant contains) H1And H2, then, according to the calculation formula of the heat exchange amount of micro-channel evaporator 6, calculate and obtain
The heat exchange amount of micro-channel evaporator 6.The heat exchange amount Q of micro-channel evaporator 6 specific formula is as follows：
Q=m* (H2-H1)；
Wherein, Q represents heat exchange amount, and m represents to flow through the refrigerant mass fluxes (tool of micro-channel evaporator 6 in the unit interval
Body is：The refrigerant inlet institute connecting tube of the left end bottom of micro-channel evaporator 6 in the unit interval measured by turbine flowmeter 2
The refrigerant volume flow that road is flowed out, multiplied by the density with refrigerant working medium under relative status, when finally can obtain unit
The refrigerant mass fluxes of the interior refrigerant inlet institute's connecting line cross section for flowing through micro-channel evaporator 6, i.e., equal to unit
The refrigerant mass fluxes m), H of micro-channel evaporator 6 are flowed through in time1For the specific enthalpy of the entrance point refrigerant of micro-channel evaporator 6
Value, H2For the ratio enthalpy of the port of export refrigerant of micro-channel evaporator 6.
In addition, may also be combined with the temperature thermal imagery distribution map that infrared video camera shoots the surface of micro-channel evaporator 6, evaporation is judged
Whether device microchannel 6 divides liquid uniform, analyzes the performance indications such as the heat exchange area utilization rate of micro-channel evaporator 6.Heat exchange amount is higher,
Point liquid is more uniform, and micro-channel evaporator heat exchange area utilization rate is higher, then performance of evaporator is better.
2nd, condensate flow, and solidifying water speed can be tested with refrigerant flow, fan delivery and wind speed, air intlet parameter
Variation relation；In the present invention, the underface of the micro-channel evaporator 6 is provided with a drip tray 12, and user passes through electricity
Sub- scale 14 can measure the condensation water quantity in drip tray 12, it is possible to the solidifying water speed rate of record, and condensate flow, solidifying water speed in real time
With refrigerant flow, fan delivery and wind speed, the variation relation of air intlet parameter.
3rd, it can test and obtain the pressure differential of both sides air, air ports humiture, air quantity above and below micro-channel heat exchanger
And wind speed；As it was previously stated, the pressure of the invention by being set respectively in the both sides up and down of the micro-channel evaporator 6
Sensor (P) 18, the air pressure for obtaining both sides above and below micro-channel heat exchanger can be measured respectively, so as to test acquisition microchannel
The pressure differential of heat exchanger air of both sides about 6.
4th, can test the refrigerant pressure differential of micro-channel evaporator import and export, above and below micro-channel evaporator both sides temperature difference
With the refrigerant flow in micro-channel evaporator；Specially：The present invention combines turbine flowmeter 2, can measure microchannel evaporation
Refrigerant flow in device, and by the Temperature Humidity Sensor (H) 20 positioned at the both sides up and down of the micro-channel evaporator 6, can
To obtain the temperature difference of both sides air above and below micro-channel evaporator.Further, it is also possible to pass through the turnover positioned at micro-channel evaporator 6
Two pressure sensors (P) 18 at mouth end, measurement obtains the refrigerant pressure differential that micro-channel evaporator is imported and exported.
5th, air channel inlet air temperature can be changed with the refrigerating capacity of conditioning moisturer, the power of heater and aerial cooler
Humidity, can also adjust air channel intake air flow.
In summary, compared with prior art, the performance test experiment for a kind of micro-channel evaporator that the present invention is provided
Platform, the performance that it can be effectively to micro-channel evaporator carries out multi-faceted detection, reliably grasps micro-channel evaporator
Heat exchange property, so as to ensure the refrigeration performance stability of whole refrigeration system being ultimately formed, is conducive to extensive promote should
With being of great practical significance.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of performance test experiment table of micro-channel evaporator, it is characterised in that including liquid storing barrel (1), the liquid storing barrel (1)
The refrigerant outlet of left end is connected by a turbine flowmeter (2) with the refrigerant inlet of working medium pump (3) right-hand member；
The refrigerant outlet of working medium pump (3) left end is connected with the refrigerant inlet of the preheating cabinet (4) right-hand member, described pre-
The refrigerant outlet of hot tank (4) left end passes through the first stop valve (51) and the refrigeration of micro-channel evaporator (6) right-hand member bottom
Agent import is connected；
The refrigerant outlet on micro-channel evaporator (6) the right-hand member top passes through the second stop valve (52) and a casing type heat exchanging
Refrigerant inlet at the top of device (7) is connected, the refrigerant outlet and the liquid storing barrel of described sleeve pipe formula heat exchanger (7) bottom
(1) refrigerant inlet of right-hand member is connected；
The micro-channel evaporator (6) is located inside a hollow, sealed air channel (15).
2. the performance test experiment table of micro-channel evaporator as claimed in claim 1, it is characterised in that the microchannel evaporation
The surface of device (6) is sequentially arranged at intervals with humidifier (8), aerial cooler (9), electric heater (10) and blower fan from top to bottom
(11)。
3. the performance test experiment table of micro-channel evaporator as claimed in claim 2, it is characterised in that the humidifier (8),
Aerial cooler (9), electric heater (10) and blower fan (11) also pass through letter with same Temperature and Humidity Control adjuster (16) respectively
Number line is connected.
4. the performance test experiment table of micro-channel evaporator as claimed in claim 3, it is characterised in that described sleeve pipe formula exchanges heat
One is provided with connecting line between the refrigerant outlet of device (7) bottom and the refrigerant inlet of the liquid storing barrel (1) right-hand member
Individual temperature sensor (17) and a pressure sensor (18)；
Connecting tube between the refrigerant outlet of working medium pump (3) left end and the refrigerant inlet of the preheating cabinet (4) right-hand member
A temperature sensor (17) and a pressure sensor (18) are provided with road；
Connecting line between the refrigerant inlet of first stop valve (51) and the micro-channel evaporator (6) right-hand member bottom
On be also equipped with a temperature sensor (17) and a pressure sensor (18)；
The both sides up and down of the micro-channel evaporator (6) are respectively arranged with a pressure sensor (18), a wind speed and surveyed
Measure instrument (19) and a Temperature Humidity Sensor (20)；
Set on connecting line between the refrigerant inlet at second stop valve (52) and the top of described sleeve pipe formula heat exchanger 7
There are a temperature sensor (17), a pressure sensor (18) and a gas mass flow gauge (21)；
The pressure sensor (18), air speed measuring apparatus (19) and Temperature Humidity Sensor (20) are located inside the air channel (15).
5. the performance test experiment table of micro-channel evaporator as claimed in claim 4, it is characterised in that in the air channel (15)
Air speed measuring apparatus (19) and Temperature Humidity Sensor (20) pass through signal wire and Temperature and Humidity Control adjuster (16) phase respectively
Connection.
6. the performance test experiment table of the micro-channel evaporator as any one of claim 1 to 5, it is characterised in that institute
State and a drip tray (12) is provided with immediately below micro-channel evaporator (6), the drip tray (12) is located at the air channel (15)
The inside；
The bottom centre position of the drip tray (12) is connected by a drainpipe (30) with a steel ladle (13).
7. the performance test experiment table of micro-channel evaporator as claimed in claim 6, it is characterised in that the steel ladle (13)
At the top of an electronic scale (14).
8. the performance test experiment table of the micro-channel evaporator as any one of claim 1 to 5, it is characterised in that institute
State the right side upper and lower ends of double pipe heat exchanger (7) has chilled water outlet (72) and chilled water import (71) respectively.
9. the performance test experiment table of the micro-channel evaporator as any one of claim 1 to 5, it is characterised in that institute
State liquid storing barrel (1), turbine flowmeter (2), working medium pump (3), preheating cabinet (4), the first stop valve (51), the second stop valve (52) with
And double pipe heat exchanger (7) is respectively positioned on the outside of the air channel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437616.9A CN107063735A (en) | 2017-06-12 | 2017-06-12 | A kind of performance test experiment table of micro-channel evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437616.9A CN107063735A (en) | 2017-06-12 | 2017-06-12 | A kind of performance test experiment table of micro-channel evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107063735A true CN107063735A (en) | 2017-08-18 |
Family
ID=59595710
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710437616.9A Pending CN107063735A (en) | 2017-06-12 | 2017-06-12 | A kind of performance test experiment table of micro-channel evaporator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702935A (en) * | 2017-11-14 | 2018-02-16 | 天津商业大学 | A kind of condensed water discharging performance test experimental bed of micro-channel evaporator |
| CN109946098A (en) * | 2019-02-14 | 2019-06-28 | 江苏科技大学 | A kind of frozen condition lower surface cooler performance testing stand of enclosed band centre refrigerant |
| CN110082094A (en) * | 2019-05-29 | 2019-08-02 | 天津商业大学 | The shunting performance testing experimental system not influenced by the non-homogeneous heat exchange in downstream |
| CN114544158A (en) * | 2022-02-16 | 2022-05-27 | 青岛海信日立空调***有限公司 | Two-phase flow test bed for shunt |
| CN115529812A (en) * | 2022-11-16 | 2022-12-27 | 新乡市特美特热控技术股份有限公司 | Control method of electronic pod environmental control device |
| CN110082094B (en) * | 2019-05-29 | 2024-06-11 | 天津商业大学 | Shunt performance test experiment system free from influence of non-uniform heat exchange in downstream |
-
2017
- 2017-06-12 CN CN201710437616.9A patent/CN107063735A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702935A (en) * | 2017-11-14 | 2018-02-16 | 天津商业大学 | A kind of condensed water discharging performance test experimental bed of micro-channel evaporator |
| CN109946098A (en) * | 2019-02-14 | 2019-06-28 | 江苏科技大学 | A kind of frozen condition lower surface cooler performance testing stand of enclosed band centre refrigerant |
| CN110082094A (en) * | 2019-05-29 | 2019-08-02 | 天津商业大学 | The shunting performance testing experimental system not influenced by the non-homogeneous heat exchange in downstream |
| CN110082094B (en) * | 2019-05-29 | 2024-06-11 | 天津商业大学 | Shunt performance test experiment system free from influence of non-uniform heat exchange in downstream |
| CN114544158A (en) * | 2022-02-16 | 2022-05-27 | 青岛海信日立空调***有限公司 | Two-phase flow test bed for shunt |
| CN115529812A (en) * | 2022-11-16 | 2022-12-27 | 新乡市特美特热控技术股份有限公司 | Control method of electronic pod environmental control device |
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