CN207623033U - A kind of low-temperature air-cooling heat exchanger performance Detecting data - Google Patents
A kind of low-temperature air-cooling heat exchanger performance Detecting data Download PDFInfo
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- CN207623033U CN207623033U CN201721901902.8U CN201721901902U CN207623033U CN 207623033 U CN207623033 U CN 207623033U CN 201721901902 U CN201721901902 U CN 201721901902U CN 207623033 U CN207623033 U CN 207623033U
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Abstract
The utility model discloses a kind of low-temperature air-cooling heat exchanger performance Detecting data, including return circuit wind tunnel, warm and humid adjusting part, freezing unit and switch board, warm and humid adjusting part and freezing unit are realized and are adjusted to wind speed, temperature, humidity high-precision in wind-tunnel under the control of switch board.The utility model has many advantages, such as that temperature, humidity, wind speed adjustable range is big, control accuracy is high, is applicable under the big environment of low epidemic disaster concentration, is particularly used for the research of heat exchanger performance under research frosting situation.
Description
Technical field
The utility model is related to a kind of heat exchanger performance Detecting datas, more particularly, to a kind of low-temperature air-cooling heat exchanger
It can Detecting data.
Background technology
Heat exchanger is widely used in the links of national product as the important equipment of two kinds of fluid communication heats,
It such as occupies an important position, is widely used in chemical industry, oil, power, food, air-conditioning, boiler and other many industrial productions.
In recent years, the continuous growth of the energy and Master Cost, energy-saving and emission-reduction have become the behave of China's grand strategy, greatly
Ground has pushed the research to high-effect energy-saving heat-exchanger, and therefore, design of heat exchanger theoretical system and standard are for enhanced heat exchange and section
It can be significant.
Heat exchanger resistance, heat-transfer capability, mechanical performance and economic performance are heat exchanger important performance indexes, and are in refrigeration
In system, the heat transfer characteristic quality of evaporator and condenser has act foot light the energy consumption and performance evaluation of entire refrigeration system
The effect of weight.
Currently, the heat exchanger performance test stand test heat exchanger of the prior art is primarily present problems with：Precision is low, test
Range is small, it is impossible to be used in the test of heat exchanger performance in the state of low temperature, high humility, the case where especially cannot be used for frosting
Under, the detection of heat exchanging device performance.
Utility model content
The purpose of the utility model is to overcome the defect of the prior art, provide that a kind of warm and humid control range is big, control essence
Spend high low-temperature air-cooling heat exchanger performance Detecting data.
To achieve the above object, the utility model proposes following technical solutions：A kind of low-temperature air-cooling heat exchanger performance detection
Testing stand, including return circuit wind tunnel and warm and humid regulating device, the return circuit wind tunnel is interior to form closed type runner, and the reflux
Formula wind-tunnel includes the test section that testpieces is placed with inside it, and the warm and humid regulating device includes warm and humid adjusting part, refrigerator
Group and switch board, the warm and humid adjusting part are located between the runner of return circuit wind tunnel formation and are communicated with runner；It is described
Freezing unit is connected with switch board and is integrated in a babinet with switch board, and the freezing unit is connected with test section, described
Switch board is connected with warm and humid adjusting part, and the freezing unit and the cooperation of warm and humid adjusting part adjust testpieces in the test section
Residing humiture.
Preferably, the return circuit wind tunnel include join end to end the test section to form closed circuit, the first diffuser,
Second diffuser, power section, third diffuser, stable section and contraction section, the warm and humid adjusting part setting third diffuser and
Between stable section, and both ends are communicated with third diffuser and stable section respectively；And first diffuser and the second diffuser it
Between, between the second diffuser and power section, between third diffuser and warm and humid adjusting part, between warm and humid adjusting part and stablize
It is respectively provided with a turning between section.
Preferably, the different flow deflector of quantity is set in each turning.
Preferably, the power section includes fan and the fan fairing that is located at outside fan.
Preferably, the stable section include along at least one layer of damping screen from contraction section to warm and humid adjusting part directional spreding and
Honeycomb.
Preferably, the warm and humid adjusting part includes humidifier, and is sequentially distributed along third diffuser to stable section direction
Electric heater, water fender and evaporator, the humidifier and electric heater are connected with switch board.
Preferably, the freezing unit includes compressor, condenser and device for drying and filtering, has refrigeration in the compressor
Agent, the compressor is by condensed device and device for drying and filtering be cooling successively after refrigerant compression, dry filter.
Preferably, further include cooling tower and water pump, the water pump both ends by outlet conduit respectively with cooling tower and freezing
Unit is connected, and the freezing unit is connected by water return pipeline with cooling tower, and the cooling tower, water pump and freezing unit pass through
The outlet conduit connects the circulating water cooling system to be formed to freezing unit with water return pipeline.
Preferably, the temperature sensor and humidity sensor being connected with switch board are additionally provided in the runner of the wind-tunnel.
Preferably, the external of the Detecting data wraps up insulating layer.
The utility model has the beneficial effects that：
1, this testing stand combines silent return circuit wind tunnel and warm and humid regulating system, is directed generally to low temperature, wet
The research for spending heat exchanging device performance under the big environment of concentration is particularly used for the research of heat exchanger performance under research frosting situation,
Big and high to this three's control accuracy advantage with temperature, humidity, wind speed adjustable range.
2, the blast velocity control range of this testing stand：0.3~10m/s, blast velocity control precision：Less than 0.5%F.S (full doses
Journey)；Temperature controlling range：- 25 DEG C~55, temperature measurement accuracy：≤ ± 0.1 DEG C, control accuracy：≤±0.3℃；Humid control
Range：50~95%.
3, this testing stand uses the silent pattern of reverse-flow type, has and is not interfered by external environment, and efficient, energy loss is few, stream
The advantages that field performance is good.
4, this testing stand prevents energy loss, insulating layer is wrapped up in the outside of the present apparatus to be isolated with external environment, every
The interference of exhausted external environment, improves the measurement accuracy of system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the warm and humid adjusting part of the utility model；
Fig. 3 is the structural schematic diagram of the utility model freezing unit.
Reference numeral：
1, test section, the 2, first diffuser, the 3, first turning, the 4, second diffuser, the 5, second turning, 6, power section, 61,
Fan, 62, fan fairing, 7, third diffuser, 8, cooling tower, 9, water pump, 10, third turning, 11, warm and humid adjusting part,
111, electric heater, 112, water fender, 113, evaporator, the 12, the 4th turning, 13, stable section, 131, damping screen, 132, honeycomb
Device, 14, contraction section, 15, freezing unit, 151, compressor, 152, condenser, 153, condenser, 16, switch board.
Specific implementation mode
Below in conjunction with the attached drawing of the utility model, the technical solution of the utility model embodiment is carried out clear, complete
Description.
A kind of revealed low-temperature air-cooling heat exchanger performance Detecting data of the utility model, by temp and humidity regulator and
Return circuit wind tunnel combines, and creates that a kind of temperature is low, the highly concentrated environment of humidity, for studying heat exchanger under this environment
Energy, the especially performance of observational study heat exchanger under frosting situation, detect whether its resistance and heat transfer property, mechanical performance etc. reach
Mark.
As shown in Figure 1, a kind of revealed low-temperature air-cooling heat exchanger performance Detecting data of the utility model embodiment, packet
Include return circuit wind tunnel, warm and humid adjusting part 11, freezing unit 15, switch board 16, cooling tower 8 and water pump 9, warm and humid adjusting part 11
With freezing unit 15 under the control of switch board 16, realizes and wind speed, temperature, humidity high-precision in wind-tunnel are adjusted.
Wherein, return circuit wind tunnel include mainly along formed closed circuit counter clockwise direction be sequentially distributed test section 1,
First diffuser 2, the first turning 3, the second diffuser 4, the second turning 5, power section 6, third diffuser 7, third turning 10,
Four turnings 12, stable section 13 and contraction section 14, testpieces is placed in test section 1, and (heat exchanger of such as the utility model, figure is not
Show), for testing cool-heat-exchanger performance, such as the fin pattern of evaporator, the heat exchange efficiency of condenser core and heat exchanger
A series of performance tests such as the influence to frosting.In the present embodiment, the section of test section 1 is that (area of section is such as a rectangular section
Can be but be limited to 1200 × 1000mm), side is equipped with observation window (not shown), can intuitively observe the experiment feelings of testpieces
Condition.
First to the major function of third diffuser 2,4,7 be to improve air-flow static pressure, reach gas for reducing air velocity
The energy of flow is converted into the purpose of potential energy, reduces windage loss.
First to fourth four round corner sections 3,5,10,12, are used to form needed for closed circuit, on the other hand
Primarily to preventing air-flow from detaching, improving the flowing of air-flow and reducing loss.Preferably, the present embodiment turning 3,5,10,
The different flow deflector (not shown) of quantity is devised in 12, for being oriented to air-flow, reduces the loss of air-flow.
Power section 6 is the power resources of this testing stand, and in the present embodiment, power section 6 includes fan 61 and is located at fan
Fan fairing 62 outside 61, wherein fan 61 select the axis stream low noise fan of customization, with efficient, noise is low, wind speed
The features such as uniform；The control of fan fairing 62 enters the wind speed in fan 61, ensures that fan 61 is in best advance than lower fortune
Turn.
At least one layer of damping screen 131 (being such as preferably provided with 3 layers of damping screen 131) of setting and a honeycomb in stable section 13
132 equal fairings, damping screen 131 and honeycomb 132 are along contraction section 14 to 12 directional spreding of the 4th turning, and stable section 13 is significantly
Turbulivity is reduced, keeps the air-flow of 14 entrance of contraction section and test section 1 uniform, improves its flow quality.
The function of contraction section 14 is uniform acceleration air-flow, it is made to meet the flow rates demand of test section 1.In the present embodiment, receive
Contracting section 14 is the curved surface that cross section is gradually tapered up toward 1 direction of test section, and 14 entrance of contraction section (is close to the end of stable section 13
Mouthful) it is preferably 3m × 2.5m, outlet (being close to the port of test section 1) is preferably 1.2m × 1.0m, certain contraction section 14 enters,
The size of outlet can design according to actual needs.
This testing stand wind-tunnel uses reverse-flow type closed type, has and is not interfered by external environment, and efficient, energy loss is few, stream
The advantages that field performance is good.
In conjunction with shown in Fig. 2, warm and humid adjusting part 11 is used to carry out accurate adjusting control to the temperature and humidity of this testing stand.
Specifically, in the present embodiment, warm and humid adjusting part 11 is located between the third turning 10 and the 4th turning 12 of wind-tunnel, specific to wrap
Humidifier (not shown) is included, and electric heater 111, the water fender being sequentially distributed to 12 direction of the 4th turning along third turning 10
112 and evaporator 113, wherein humidifier and electric heater 111 are connected with switch board 16, and humidifier is according to environment temperature
Need humidification process is done to testing stand；Electric heater 111 is needing to make testing stand and heat according to environment temperature；Gear
Water plate 112 is to do dry filter processing to refrigerant；Evaporator 113 is that liquid refrigerant absorbs heat into low temperature and low pressure steam.
Freezing unit 15 be connected with the test section 1 of wind-tunnel by pipeline, with warm and humid adjusting part 11 coordinate, for pair
System cooling refrigeration.Specifically, in conjunction with shown in Fig. 3, in the present embodiment, freezing unit 15 includes compressor 151, condenser 152
With device for drying and filtering 153, when refrigeration, the compressor 151 freezed in unit 15 passes through refrigerant compression at high temperature and high pressure gas
After condenser 152, refrigerant cooling heat release does dry filter at normal temperature high voltage liquid, then by device for drying and filtering 153 to refrigerant
Then processing carries out decompression processing to refrigerant, refrigerant just becomes low temperature and low pressure liquid, and refrigerant is again through warm and humid adjusting part
The heat absorption of evaporator 113 in 11 becomes low temperature low pressure gas, and evaporator 113 absorbs heat to extraneous environment temperature reduction, just reaches to entire
The refrigeration effect of system.
Switch board 16 is connected with freezing unit 15 and warm and humid adjusting part 11, for according to freezing unit 15 and warm and humid tune
The feedback of section component 11 is adjusted control to the humiture of whole device.In the present embodiment, switch board 16 and freezing unit 15
It is integrated in a babinet.
In addition, being additionally provided with the temperature sensor (not shown) being connected with switch board 16 and humidity sensor in the runner of wind-tunnel
Device (not shown).
Cooling tower 8 is combined with water pump 9, and the compressor 151 to freeze unit 15 is carried out cooling and provided to condenser 152 cold
But water.Specifically, in the present embodiment, cooling tower 8 includes cooling blower, and cooling tower 8 is connected by outlet conduit with water pump 9,
Water pump 9 is connected through outlet conduit with freezing unit 15；Freezing unit 15 is connected by water return pipeline with cooling tower 8, in this way,
Cooling tower 8, water pump 9 connect to form following for the closure to freezing unit 15 with water return pipeline by outlet conduit with freezing unit 15
Ring water-cooling system.Wherein, 8 one side of cooling tower is used to cool down the compressor 151 for freezing unit 15, prevents compressor
151 work repeatedly, and the heat of generation disperses not in time, damage compressor 151；On the other hand also it is the condenser of freezing unit 15
152 provide cooling water.
In addition, in order to be isolated with external environment, energy loss is prevented, wrapping up insulating layer in the outside of this testing stand, (figure is not
Show), completely cut off the interference of external environment, improves the measurement accuracy of system.
The operation principle of this testing stand is：Wind-tunnel operates control by the fan 61 of power section 6, and wind is generated in runner
Speed, user set target temperature, humidity, and switch board 16 is according to the electric heater of the warm and humid adjusting part of set temperature drive control 11
111, the compressor 151 of humidifier (not shown) and freezing unit 15 works, and is passed further according to the temperature sensor in runner, humidity
The feedback of sensor adjusts the heating power of the power and humidifier of electric heater 111 repeatedly, until reaching the temperature of setting and wet
Degree.
This testing stand wind speed, control of temperature and humidity precision are high and control range is big, and blast velocity control range is reachable：0.3~
10m/s, blast velocity control precision：Less than 0.5%F.S；Temperature controlling range can be from：- 25 DEG C~55 DEG C, temperature measurement accuracy：≤
± 0.1 DEG C, control accuracy：≤±0.3℃；Humid control range can be from：50%~95%.
And the test section 1 of this testing stand meets various types of heat exchangers, evaporator core, condenser core testpieces and surveys
Examination, by taking heat exchanger is 1 testpieces of test section as an example, switch board 16 provides the refrigerating medium (such as ethylene glycol) needed for heat exchanger, passes through
The temperature and humidity in book testing stand wind-tunnel runner is adjusted, so that test section 1 is under different temperature and humidity operating modes, to survey
Heat exchanger is tried using eth.glycol as performances such as the heat-transfer capabilities of the heat exchanger of medium circulation system and resistance, is especially being tied
The performance of heat exchanger under the conditions of frost.
It should be noted that switch board is with the refrigeration principle of freezing unit, its concrete structure can refer to existing air conditioner refrigerating
System structure, the innovative point of the design, which is essentially consisted in, is combined these warm and humid regulating devices and warm and humid with return circuit wind tunnel
Regulating device and the positional structure of wind-tunnel design.
The technology contents and technical characteristic of the utility model have revealed that as above, however those skilled in the art still may be used
Teaching and announcement that can be based on the utility model and make various replacements and modification without departing substantially from the spirit of the present invention, therefore, this
Utility model protection range should be not limited to the revealed content of embodiment, and should include the various replacements without departing substantially from the utility model
And modification, and covered by present patent application claim.
Claims (10)
1. a kind of low-temperature air-cooling heat exchanger performance Detecting data, which is characterized in that filled including return circuit wind tunnel and warm and humid adjusting
It sets, forms closed type runner in the return circuit wind tunnel, and the return circuit wind tunnel includes the survey for being placed with testpieces inside it
Section is tried, the warm and humid regulating device includes that warm and humid adjusting part, freezing unit and switch board, the warm and humid adjusting part are located at institute
It states between the runner of return circuit wind tunnel formation and communicates with runner；The freezing unit is connected with switch board and is integrated with switch board
In in a babinet, the freezing unit is connected with test section, and the switch board is connected with warm and humid adjusting part, the refrigerator
Group and the cooperation of warm and humid adjusting part adjust the humiture in the test section residing for testpieces.
2. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 1, which is characterized in that the reflux
Formula wind-tunnel includes the join end to end test section to form closed circuit, the first diffuser, the second diffuser, power section, third
Diffuser, stable section and contraction section, between the warm and humid adjusting part setting third diffuser and stable section, and both ends respectively with
Third diffuser and stable section communicate；And between first diffuser and the second diffuser, the second diffuser and power section it
Between, between third diffuser and warm and humid adjusting part, between warm and humid adjusting part a turning is respectively provided between stable section.
3. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 2, which is characterized in that each described
Quantity different flow deflector is set in turning.
4. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 2, which is characterized in that the power
Section includes fan and the fan fairing being located at outside fan.
5. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 2, which is characterized in that the stabilization
Section includes at least one layer of damping screen and honeycomb along contraction section to warm and humid adjusting part directional spreding.
6. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 2, which is characterized in that described warm and humid
Adjusting part includes humidifier, and electric heater, water fender and the evaporation being sequentially distributed to stable section direction along third diffuser
Device, the humidifier and electric heater are connected with switch board.
7. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 1, which is characterized in that the freezing
Unit includes compressor, condenser and device for drying and filtering, has refrigerant in the compressor, and the compressor is by refrigerant pressure
Condensed device and device for drying and filtering be cooling successively after contracting, dry filter.
8. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 7, which is characterized in that further include cold
But tower and water pump, the water pump both ends are connected with cooling tower and freezing unit respectively by outlet conduit, and the freezing unit is logical
It crosses water return pipeline with cooling tower to be connected, and the cooling tower, water pump and freezing unit pass through the outlet conduit and water return pipeline
Connection forms the circulating water cooling system to freezing unit.
9. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 1, which is characterized in that the wind-tunnel
Runner in be additionally provided with the temperature sensor and humidity sensor being connected with switch board.
10. a kind of low-temperature air-cooling heat exchanger performance Detecting data according to claim 1, which is characterized in that the inspection
It surveys the external of testing stand and wraps up insulating layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901902.8U CN207623033U (en) | 2017-12-29 | 2017-12-29 | A kind of low-temperature air-cooling heat exchanger performance Detecting data |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721901902.8U CN207623033U (en) | 2017-12-29 | 2017-12-29 | A kind of low-temperature air-cooling heat exchanger performance Detecting data |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827792A (en) * | 2019-02-14 | 2019-05-31 | 江苏科技大学 | The dry and wet refrigeration and heating condition lower surface cooler performance experimental rig of open type |
| CN109991027A (en) * | 2017-12-29 | 2019-07-09 | 百林机电科技（苏州）有限公司 | A kind of low-temperature air-cooling heat exchanger performance Detecting data |
| CN114323071A (en) * | 2021-12-27 | 2022-04-12 | 武汉航空仪表有限责任公司 | Heating life test device and method for vane sensor |
| CN114858403A (en) * | 2022-05-17 | 2022-08-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling method |
-
2017
- 2017-12-29 CN CN201721901902.8U patent/CN207623033U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991027A (en) * | 2017-12-29 | 2019-07-09 | 百林机电科技（苏州）有限公司 | A kind of low-temperature air-cooling heat exchanger performance Detecting data |
| CN109827792A (en) * | 2019-02-14 | 2019-05-31 | 江苏科技大学 | The dry and wet refrigeration and heating condition lower surface cooler performance experimental rig of open type |
| CN114323071A (en) * | 2021-12-27 | 2022-04-12 | 武汉航空仪表有限责任公司 | Heating life test device and method for vane sensor |
| CN114858403A (en) * | 2022-05-17 | 2022-08-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling method |
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