CN110411700A - A kind of heat exchanger wind tunnel testing system - Google Patents
A kind of heat exchanger wind tunnel testing system Download PDFInfo
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- CN110411700A CN110411700A CN201910802708.1A CN201910802708A CN110411700A CN 110411700 A CN110411700 A CN 110411700A CN 201910802708 A CN201910802708 A CN 201910802708A CN 110411700 A CN110411700 A CN 110411700A
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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Abstract
A kind of heat exchanger wind tunnel testing system, comprising: the wind side circulatory system；The water side circulatory system；Tested heat exchanger can be accessed simultaneously in the wind side circulatory system and the water side circulatory system；Wherein, the water side circulatory system includes: to be tested heat exchanger load segment by the sequentially connected water tank of pipeline, pump and water side, and the water side is tested heat exchanger load segment and connect with the water tank；The water inlet temperature sensor that the water side is tested the water inlet of heat exchanger load segment is set；The outlet temperature sensor that the water side is tested the water outlet of heat exchanger load segment is set；Liquid heater and cooler between the pump and water inlet temperature sensor are set；Be tested the water inlet of heat exchanger load segment with the water side or water outlet connect, the flowmeter of flow for detecting tested heat exchanger.The present invention is without using refrigerant, compared with the prior art, not high to the security requirement of the water side circulatory system without consuming refrigerant, and Range of measuring temp is wider.
Description
Technical field
The present invention relates to heat exchanger testing fields.
Background technique
Current heat exchanger performance test macro generallys use refrigerant to be tested, and it is big to be required to consumption for test every time
Measure refrigerant, and not energy-efficient and environmental protection；Secondly, when being tested using certain flammable refrigerants, to the anti-leak etc. of system
Security requirement is higher, increases the cost of system；Third, the temperature range measured using refrigerant is smaller, generally can not mould
The even subzero operating condition of quasi- low temperature, condition range are limited.
Summary of the invention
It is an object of the present invention to provide a kind of heat exchanger wind tunnel testing systems, to solve the above problems.
According to an aspect of the invention, there is provided a kind of heat exchanger wind tunnel testing system, comprising:
The wind side circulatory system；
The water side circulatory system；
It is equipped in the wind side circulatory system and the water side circulatory system and is changed for installing the tested of tested heat exchanger
Hot device load segment, so that the tested heat exchanger can be accessed simultaneously in the wind side circulatory system and the water side circulatory system；
Wherein, the water side circulatory system includes:
It is tested heat exchanger load segment by the sequentially connected water tank of pipeline, pump and water side, the water side is tested heat exchanger dress
It is connect with section with the water tank；
The water inlet temperature sensor that the water side is tested the water inlet of heat exchanger load segment is set；
The outlet temperature sensor that the water side is tested the water outlet of heat exchanger load segment is set；
Liquid heater and cooler between the pump and water inlet temperature sensor are set；
It is connect with the water inlet of the tested heat exchanger load segment in the water side or water outlet, the stream for detecting tested heat exchanger
The flowmeter of amount.
Heat exchanger wind tunnel testing system of the invention is tested using water side circulatory system heat exchanging device, without using
Refrigerant, but the mixed liquor of water or ethylene glycol and water is used to be tested, water is controlled by liquid heater and cooler
Temperature is flowed, conveyed using pump and controls water flow, to simulate heat exchanger operating condition, to efficiently be tested, compared to existing
Technology, it is not high to the security requirement of the water side circulatory system without consuming refrigerant, reduce system cost, and test temperature model
It encloses wider.
It in some embodiments, further include that the downstream for connecting the liquid heater and cooler and the water side are tested
The flow valve member of between the upstream of the water inlet of the heat exchanger load segment and inlet of the pump enters tested heat exchange with control
The uninterrupted of device.
Further water flow is adjusted by flow valve member as a result, to increase flow adjustment range.
In some embodiments, the flow valve member is triple valve comprising entrance, first outlet and second outlet；
The entrance of the triple valve is connected to the downstream of the liquid heater and cooler, the first outlet of the triple valve
It is connected to the upstream that the water side is tested the water inlet of heat exchanger load segment, the second outlet of the triple valve is connected to entering for the pump
Mouthful；
The aperture of the first outlet and second outlet of the output flow of the pump and the triple valve can be according to described
The flow value that flow measurement obtains is adjusted.
Flow adjusting is carried out using triple valve as a result, the aperture control by controlling first outlet enters tested heat exchanger
Uninterrupted, remaining water flow by second outlet back to pump water inlet, in this way, outlet and triple valve in pump
Entrance between water flow may remain in higher level, with this accelerate pump outlet and triple valve entrance between this section pipe
The water flow delivery situation on road enables and is supplied to tested heat exchanger as early as possible by the water flow of liquid heater and cooler, subtracts
Few possible range of temperature before reaching tested heat exchanger, it is ensured that the water inlet temperature of tested heat exchanger.
In some embodiments, further includes:
First PID controller, the flow value for being used to be obtained according to the flow measurement or the outlet temperature sensor
The temperature measured controls the output flow of the pump and/or the aperture of the triple valve；
Second PID controller, the temperature for being used to be measured according to the water inlet temperature sensor control the liquid and add
The output temperature of hot device and/or the cooler.
The efficient control of water flow and temperature is realized by closed-loop automatic control technology as a result,.
In some embodiments, the wind side circulatory system includes:
Wind side is tested heat exchanger load segment；
It is separately positioned on the wind side and is tested the air inlet of heat exchanger load segment and the air inlet temperature and humidity biography at air outlet
Sensor and air outlet Temperature Humidity Sensor；
The tested heat exchanger assembly in downstream and the wind side that the wind side is tested the air outlet of heat exchanger load segment is set
Air measuring device, exhaust blower, thermoregulator and humidistat between the air inlet upstream of section；Wherein, the exhaust blower
Air quantity can be adjusted according to the air quantity that the air measuring device measures；The temperature and humidity of the thermoregulator is adjusted
The humidity of device can be adjusted according to the temperature and humidity that the air inlet Temperature Humidity Sensor measures respectively.
As a result, by effectively controlling air quantity and temperature and humidity, with the operating condition of simulated air side, to efficiently be tested.
It in some embodiments, further include the upstream that the air inlet Temperature Humidity Sensor is set and the air outlet
Air duct Temperature Humidity Sensor between the downstream of Temperature Humidity Sensor, the temperature and humidity adjuster of the thermoregulator it is wet
The temperature and humidity and the air duct Temperature Humidity Sensor that degree can be measured according to the air inlet Temperature Humidity Sensor respectively
The temperature and humidity measured is adjusted.
It control effectively in such a way that observing and controlling separates to tested heat exchanger air inlet temperature and humidity as a result,.
In some embodiments, further includes:
Processor is used for the temperature and humidity measured according to the air inlet Temperature Humidity Sensor, generates corresponding temperature
Degree target value control signal and humidity target value control signal are simultaneously sent respectively；
Third PID controller, the temperature target control signal for being used to be generated according to the processor and the wind
The temperature that road Temperature Humidity Sensor measures controls the temperature of the thermoregulator；
4th PID controller, the humidity target value control signal for being used to be generated according to the processor and the wind
The humidity that road Temperature Humidity Sensor measures controls the humidity of the humidistat.
The observing and controlling of tested heat exchanger air inlet temperature and humidity is effectively realized by processor and closed-loop automatic control technology as a result,
Separation scheme.
In some embodiments,
The thermoregulator is air heater；
The humidistat is humidifier；
The air inlet Temperature Humidity Sensor, air outlet Temperature Humidity Sensor and air duct Temperature Humidity Sensor are relative humidity
Sensor.
The control precision of each parameter of the wind side circulatory system is further increased as a result,.
In some embodiments, further include the 5th PID controller, be used for the wind measured according to the air measuring device
Amount controls the discharge quantity of fan of the exhaust blower.
The efficient control of air quantity is realized by closed-loop automatic control technology as a result,.
It in some embodiments, further include the air that the air inlet that the wind side is tested heat exchanger load segment is set
Damper.
Make to reach the effect flowed at the air inlet section of tested heat exchanger by air damper as a result, reduce because of wind
Vortex generates the influence to tested heat exchanger heat exchange property in hole.
Detailed description of the invention
Fig. 1 is the schematic diagram of the water side circulatory system of the invention；
Fig. 2 is the schematic diagram of the wind side circulatory system of the invention.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 and 2 schematically shows a kind of heat exchanger wind tunnel testing system of embodiment according to the present invention, including
The wind side circulatory system and the water side circulatory system are equipped with the tested heat exchanger dress for installing tested heat exchanger 2 in two systems
With section, so that tested heat exchanger 2 can access the two systems simultaneously.Wherein, the water side circulatory system is that tested heat exchanger 2 mentions
Watering cycle, to replace the refrigerant in tested heat exchanger 2, the wind side circulatory system provides the operating condition of air side, with water and air
Heat exchange simulates the heat exchange of refrigerant and air, realizes the performance test of heat exchanger.
As shown in Figure 1, the water side circulatory system includes pipeline portions and control section, wherein pipeline portions include passing through pipe
The sequentially connected water tank 12 in road, pump 14, water route heater 15, cooler 16, triple valve 13, water inlet temperature sensor 17, water
Side is tested heat exchanger load segment 21, outlet temperature sensor 22 and flowmeter 18, which connect with water tank 12, pipeline
The flow of interior water is shown as clockwise in Fig. 1.Water side is tested on heat exchanger load segment 21 and is provided with inlet and outlet,
Inlet and outlet i.e. as tested heat exchanger 2 use.In other embodiments, the water route heater 15 and cooler
16 sequence can exchange.Flowmeter 18 also can be set in the water inlet of tested heat exchanger 2, if be able to detect that by
The flow of tested heat exchanger 2.
The pump 14 is specially the multi-stage water pump of high lift, and equipped with frequency converter, changes motor in pumping by frequency converter
Revolving speed, and then control the flow of pump 14.
The water route heater 15 is water route electric heater, which is cooling-water machine, passes through heating and cooling control respectively
Water temperature processed.
The triple valve 13 includes three mouths: entrance, first outlet and second outlet, and the entrance and the outlet of cooler 16 connect
Connect, first outlet is connect with the water inlet of tested heat exchanger 2, second outlet by the tributary pipeline 23 of bifurcation and pump 14 into
Mouth of a river connection.By the aperture of regulating three-way valve 13 first outlet and second outlet, the water flow entered to its entrance is shunted,
Wherein, the uninterrupted of tested heat exchanger 2 is entered by controlling the aperture control of first outlet, remaining water flow goes out by second
Mouth and tributary pipeline 23 are back to the water inlet for pumping 14, in this way, between the outlet of pump 14 and the entrance of triple valve 13
Water flow may remain in higher level, the water flow of this section of pipeline between the entrance of the outlet and triple valve 13 accelerating to pump 14 with this
Delivery situation enables and is supplied to tested heat exchanger 2 as early as possible by the water flow of water route heater 15 and cooler 16, is reduced to
Possible range of temperature before up to tested heat exchanger 2, it is ensured that the water inlet temperature of tested heat exchanger 2.In other embodiment party
In formula, triple valve 13 can also be replaced with to the throttle valve or other energy of the adjustable aperture being arranged on tributary pipeline 23
Enough adjust the valve member etc. of flow.
The control section of the water side circulatory system includes the first PID controller 19, the second PID controller 20 and the processing of water side
Device (not shown).The water side processor is used to be passed according to flowmeter 18, water inlet temperature sensor 17 and outlet temperature
The measurement result of sensor 22 calculates separately outflow target value or outlet temperature target value, and is sent to the first PID controller
19, and, water inlet temperature target is calculated, and be sent to the second PID controller 20, passes through 19 He of the first PID controller
Second PID controller 20 measures the corresponding executive component of structure control according to corresponding sensing element, so that the survey of each sensing element
It obtains result and reaches respective objects value required by the processor of water side, specific set-up mode sees below.Processor and PID controller
The working method and control principle of itself belong to the prior art, herein without repeating.
First PID controller 19 respectively with pump 14 and/or triple valve 13 be electrically connected, and with flowmeter 18 or water outlet temperature
One of them electrical connection of sensor 22 is spent, in the present embodiment, the first PID controller 19 is by closed-loop automatic control technology to pump
14 frequency is controlled, and then controls the water flow of its output, so that the reading of flowmeter 18 reaches and stablizes in water side
Flow target value required by processor.In other embodiments, the first PID controller 19 can also be by controlling triple valve
13 aperture, so that the flow of its first outlet is controlled, so that the reading of flowmeter 18 reaches and stablizes in flow target value,
First PID controller 19 can also simultaneously control pump 14 and triple valve 13, carry out comprehensive allotment.In addition, the first control
Device can not also control flow, but being controlled the outlet temperature of tested heat exchanger 2 (is still by pump 14
And/or triple valve 13 is controlled) so that the reading of outlet temperature sensor 22 reaches and stablizes in outlet temperature target
Value, flow and temperature due to being tested 2 water outlet of heat exchanger are relevant, the effects controlled one of any to the two
It is essentially identical.
Second PID controller 20 respectively with water inlet temperature sensor 17 and water route heater 15 and/or cooler 16
Electrical connection.In the present embodiment, the second PID controller 20 passes through the temperature that closed-loop automatic control technology exports water route heater 15
Degree is controlled, so that the reading of water inlet temperature sensor 17 reaches and stablizes the water inlet required by the processor of water side
Temperature target.In other embodiments, the second PID controller 20 can also be carried out by the temperature exported to cooler 16
Control, this can be selected according to the test pattern of tested heat exchanger 2, if it is evaporator mode, can only open cooling
Device 16 then can only open water route heater 15 if it is condenser modes.It in other embodiments, can also be right simultaneously
The output temperature of water route heater 15 and cooler 16 is controlled, the adjusting of Lai Shixian water inlet temperature.
When one of flow target value or outlet temperature target value and water inlet temperature target reach simultaneously
After stabilization, then water inlet enthalpy can be obtained according to water inlet temperature, water outlet enthalpy be obtained according to outlet temperature, and combine
Flow value calculates the heat exchange amount for obtaining tested heat exchanger 2.
The mixed liquor of pure water or ethylene glycol and water can be used as cycle fluid in the water side circulatory system of the invention.Pure water can
The measurement temperature range of realization is bigger than refrigerant, and further, when using the mixed liquor of ethylene glycol and water, temperature can reach
To 0 ° or less (minimum to can achieve subzero 40 ° to 50 ° or so), the operating condition in the case of frosting can be simulated, survey is further increased
The condition range of examination.
As shown in Fig. 2, the wind side circulatory system includes pipeline portions and control section, wherein pipeline portions include that wind side is tested
(wind side is tested on heat exchanger load segment 24 and is provided with air inlet and air outlet heat exchanger load segment 24, i.e., as tested heat exchanger 2
Air inlet and air outlet use), be arranged in wind side be tested heat exchanger load segment 24 air inlet air inlet temperature and humidity pass
Sensor 1 and air damper 10, and the air outlet temperature and humidity that wind side is tested at the air outlet of heat exchanger load segment 24 is set
Sensor 25, and successively set with the direction of downstream to the upstream of air inlet of the air outlet of the tested heat exchanger load segment 24 in wind side
Set air measuring device 26, exhaust blower 3, thermoregulator 4, humidistat 5 and air duct Temperature Humidity Sensor 6 in air duct.
Wherein, air measuring device 26 and exhaust blower 3 are adjacent, 6 phase of thermoregulator 4, humidistat 5 and air duct Temperature Humidity Sensor
Neighbour, in order to Boiler pressure control and Temperature and Humidity Control, on this basis, setting sequence can be exchanged, and be not limited to sequence described above.
The control section of the wind side circulatory system includes third PID controller 7, the 4th PID controller 8, the 5th PID controller
9 and wind side processor (not shown).Wind side processor is used for according to each measuring cell (Temperature Humidity Sensor, air measuring
Device 26) measure as a result, calculate the target value of the corresponding parameter of each measuring cell, be then forwarded to each PID controller, by
PID controller controls corresponding executive component (exhaust blower 3, thermoregulator 4, humidity according to the result that each measuring cell measures
Adjuster 5) so that the result that measures of each measuring cell reaches target value, specific set-up mode sees below.Processor and PID
The working method and control principle of controller itself belong to the prior art, herein without repeating.In addition, at water side of the invention
Reason device and wind side processor can be respectively adopted two different processors and realize, can also be realized using same processor.
The thermoregulator 4, humidistat 5 and air duct Temperature Humidity Sensor 6 are arranged far from the wind of tested heat exchanger 2
On road position, the temperature and humidity of the air inlet of tested heat exchanger 2 is adjusted in such a way that observing and controlling separates.This is allowed for
The in-site installation problem of air inlet.Specifically, wind side processor air inlet according to measured by air inlet Temperature Humidity Sensor 1
Wind duct temperature measured by temperature and air inlet humidity and air duct Temperature Humidity Sensor 6 and air duct humidity, in conjunction with air duct temperature
Situations such as the distance between humidity sensor 6 and air inlet Temperature Humidity Sensor 1, calculates temperature and humidity deviation between the two,
Wind duct temperature target value and air duct humidity target value is calculated with this, and is respectively sent to third PID controller 7 and
Four PID controllers 8.
Third PID controller 7 is electrically connected with air duct Temperature Humidity Sensor 6 and thermoregulator 4 respectively, uses dry bulb temperature
Control mode is spent, is controlled by output temperature of the closed-loop automatic control technology to thermoregulator 4, so that air duct is warm and humid
The reading of degree sensor 6 reaches and stablizes in wind duct temperature target value.
4th PID controller 8 is electrically connected with air duct Temperature Humidity Sensor 6 and humidistat 5 respectively, uses wet bulb temperature
Control mode is spent, is controlled by output humidity of the closed-loop automatic control technology to humidistat 5, so that air duct is warm and humid
The reading of degree sensor 6 reaches and stablizes in air duct humidity target value, and air inlet temperature and humidity is adjusted with this.
In other embodiments, if the temperature and humidity adjustment of air inlet can also save not by the way of observing and controlling separation
Directly thermoregulator 4 and humidistat 5 are arranged near air inlet for air duct Temperature Humidity Sensor 6, it is only necessary to according into
Temperature and humidity measured by air port Temperature Humidity Sensor 1 controls thermoregulator 4 and humidistat 5.
In the present embodiment, the air inlet Temperature Humidity Sensor 1, air outlet Temperature Humidity Sensor 25 and air duct temperature and humidity pass
Sensor 6 be all using the relative humidity sensor of air themperature and humidity can be detected simultaneously, in other embodiments, can also be with
Using modes such as independent temperature sensor and humidity sensors.The thermoregulator 4 is specially electric airheater, the humidity
Adjuster 5 is humidifier.
The air measuring device 26 is specially nozzle box, is arranged near the air outlet of tested heat exchanger 2, passes through for measuring
The air force of tested heat exchanger 2.Air quantity that the wind side processor is measured according to air measuring device 26 and other corresponding join
Number calculates air output target value, and sends it to the 5th PID controller 9.5th PID controller 9 passes through closed-loop automatic control
Technology controls the discharge quantity of fan of exhaust blower 3, so that the reading of air measuring device 26 reaches and stablizes in air quantity target
Value.
The air damper 10 is arranged near the air inlet of tested heat exchanger 2, for cutting the air inlet of tested heat exchanger 2
The effect flowed is reached at face, is reduced because vortex generates the influence to tested 2 heat exchange property of heat exchanger in wind-tunnel.
It, then can basis after wind duct temperature target value, air duct humidity target value and air quantity target value reach and stablize
The temperature and humidity of air inlet obtains air inlet enthalpy, according to the temperature of air outlet and to obtain air outlet enthalpy, and combine
Air force calculates the heat exchange amount for obtaining tested heat exchanger.
In the ideal case, the tested heat exchanger obtained respectively by the wind side circulatory system and the water side circulatory system changes
Heat is identical, it is only necessary to one of test result is obtained, if two test result differences, can also join simultaneously
It examines, with a modified test result.
In addition, the wind side being located in the wind side circulatory system is tested heat exchanger load segment 24, it can be using equipped with universal wheel
Moveable tested heat exchanger tooling section 11 realize, in order to be tested the installation and removal of heat exchanger 2.Similarly, wind side quilt
Survey heat exchanger load segment 24 upstream or downstream one end air duct can also using equipped with universal wheel moveable upstream or under
It swims tooling section to realize, convenient for being moved accordingly when tested heat exchanger tooling section 11 carries out installing and dismounting.
Heat exchanger wind tunnel testing system of the invention can be not only used for test refrigerant heat exchanger, can be used for test originally
The heat exchanger that body is exchanged heat by the way of water cooling, such as fan coil, the scope of application are wider.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, or carries out freely to above-mentioned technical proposal
Combination, these are all within the scope of protection of the present invention.
Claims (10)
1. a kind of heat exchanger wind tunnel testing system characterized by comprising
The wind side circulatory system；
The water side circulatory system；
The tested heat exchange for installing tested heat exchanger (2) is equipped in the wind side circulatory system and the water side circulatory system
Device load segment, so that the tested heat exchanger (2) can be accessed simultaneously in the wind side circulatory system and the water side circulatory system；
Wherein, the water side circulatory system includes:
Heat exchanger load segment (21) are tested by the sequentially connected water tank of pipeline (12), pump (14) and water side, the water side is tested
Heat exchanger load segment (21) is connect with the water tank (12)；
It is arranged and is tested the water inlet temperature sensor (17) of the water inlet of heat exchanger load segment (21) in the water side；
It is arranged and is tested the outlet temperature sensor (22) of the water outlet of heat exchanger load segment (21) in the water side；
Water route heater (15) and cooler (16) between the pump (14) and water inlet temperature sensor (17) are set；
The water inlet of heat exchanger load segment (21) is tested with the water side or water outlet is connect, for detecting tested heat exchanger (2)
Flow flowmeter (18).
2. heat exchanger wind tunnel testing system according to claim 1, it is characterised in that: further include connecting the water route heating
The downstream and the water side of device (15) and cooler (16) be tested between the upstream of the water inlet of heat exchanger load segment (21) and
The flow valve member of the inlet of the pump (14), to control the uninterrupted for entering tested heat exchanger (2).
3. heat exchanger wind tunnel testing system according to claim 2, it is characterised in that: the flow valve member is triple valve
(13) comprising entrance, first outlet and second outlet；
The entrance of the triple valve (13) is connected to the downstream of the water route heater (15) and cooler (16), the triple valve
(13) first outlet is connected to the upstream that the water side is tested the water inlet of heat exchanger load segment (21), the triple valve (13)
The entrance of the second outlet connection pump (14)；
The output flow and the first outlet of the triple valve (13) and the aperture of second outlet of the pump (14) being capable of bases
The flow value that the flowmeter (18) measures is adjusted.
4. heat exchanger wind tunnel testing system according to claim 3, which is characterized in that further include:
First PID controller (19), the flow value for being used to be measured according to the flowmeter (18) or the outlet temperature pass
The output flow for the temperature control pump (14) that sensor (22) measures and/or the aperture of the triple valve (13)；
Second PID controller (20), the temperature for being used to be measured according to the water inlet temperature sensor (17) control the water
The output temperature of road heater (15) and/or the cooler (16).
5. heat exchanger wind tunnel testing system according to any one of claim 1 to 4, which is characterized in that the wind side is followed
Loop system includes:
Wind side is tested heat exchanger load segment (24)；
It is separately positioned on the wind side and is tested the air inlet of heat exchanger load segment (24) and the air inlet temperature and humidity biography at air outlet
Sensor (1) and air outlet Temperature Humidity Sensor (25)；
It is arranged and is tested the tested heat exchanger assembly in downstream and the wind side of the air outlet of heat exchanger load segment (24) in the wind side
Air measuring device (26), exhaust blower (3), thermoregulator (4) and humidistat between the air inlet upstream of section (24)
(5)；Wherein, the air quantity of the exhaust blower (3) can be adjusted according to the air quantity that the air measuring device (26) measures；It is described
The humidity of the temperature and humidity adjuster (5) of thermoregulator (4) can be respectively according to the air inlet Temperature Humidity Sensor (1)
The temperature and humidity measured is adjusted.
6. heat exchanger wind tunnel testing system according to claim 5, it is characterised in that: further include being arranged in the air inlet
Air duct Temperature Humidity Sensor between the upstream of Temperature Humidity Sensor (1) and the downstream of the air outlet Temperature Humidity Sensor (25)
(6), the humidity of the temperature and humidity adjuster (5) of the thermoregulator (4) can be respectively according to the air inlet temperature and humidity
The temperature and humidity that the temperature and humidity and the air duct Temperature Humidity Sensor (6) that sensor (1) measures measure is adjusted
Section.
7. heat exchanger wind tunnel testing system according to claim 6, which is characterized in that further include:
Processor is used for the temperature and humidity measured according to the air inlet Temperature Humidity Sensor (1), generates corresponding temperature
Target value control signal and humidity target value control signal are simultaneously sent respectively；
Third PID controller (7), the temperature target control signal for being used to be generated according to the processor and the air duct
The temperature that Temperature Humidity Sensor (6) measures, controls the temperature of the thermoregulator (4)；
4th PID controller (8), the humidity target value control signal for being used to be generated according to the processor and the air duct
The humidity that Temperature Humidity Sensor (6) measures, controls the humidity of the humidistat (5).
8. heat exchanger wind tunnel testing system according to claim 6, it is characterised in that:
The thermoregulator (4) is air heater；
The humidistat (5) is humidifier；
The air inlet Temperature Humidity Sensor (1), air outlet Temperature Humidity Sensor (25) and air duct Temperature Humidity Sensor (6) are phase
To humidity sensor.
9. heat exchanger wind tunnel testing system according to claim 5, it is characterised in that: further include the 5th PID controller
(9), the discharge quantity of fan of exhaust blower (3) described in the Boiler pressure control for being used to be measured according to the air measuring device (26).
10. heat exchanger wind tunnel testing system according to claim 5, it is characterised in that: further include being arranged in the wind side
The air damper (10) of the air inlet of tested heat exchanger load segment (24).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111289214A (en) * | 2020-03-13 | 2020-06-16 | 浙江银轮机械股份有限公司 | Wind tunnel experimental device and temperature measuring method |
| CN114296490A (en) * | 2021-12-30 | 2022-04-08 | 中国汽车工程研究院股份有限公司 | Automobile environment wind tunnel temperature feedforward control method |
| CN116878812A (en) * | 2023-09-08 | 2023-10-13 | 中国空气动力研究与发展中心计算空气动力研究所 | Round tube frosting experimental model and experimental method for observing frosting from axial direction |
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| CN116878812A (en) * | 2023-09-08 | 2023-10-13 | 中国空气动力研究与发展中心计算空气动力研究所 | Round tube frosting experimental model and experimental method for observing frosting from axial direction |
| CN116878812B (en) * | 2023-09-08 | 2023-11-17 | 中国空气动力研究与发展中心计算空气动力研究所 | Round tube frosting experimental model and experimental method for observing frosting from axial direction |
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Application publication date: 20191105 |