CN206725184U - A kind of high temperature heat exchange wind tunnel testing system - Google Patents
A kind of high temperature heat exchange wind tunnel testing system Download PDFInfo
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- CN206725184U CN206725184U CN201720315070.5U CN201720315070U CN206725184U CN 206725184 U CN206725184 U CN 206725184U CN 201720315070 U CN201720315070 U CN 201720315070U CN 206725184 U CN206725184 U CN 206725184U
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Abstract
The utility model discloses a kind of high temperature heat exchange wind tunnel testing system, including air loop subsystem, electrical heating subsystem, water circulation subsystem, distribution subsystem, parameter measurement and data acquisition subsystem.Employ blowing-type wind tunnel experiment system and replace traditional induced air type wind tunnel experiment system, higher pressure head can be provided to overcome wind-tunnel duct resistance, and avoid destruction of the hot-air to bearing of blower and sealing device；Install water circulation system additional after experimental piece to cool down high temperature air, ensure the security of experimental system operation.The utility model wind tunnel system is simulated high temperature fluent metal or high-temperature molten salt using electrically heated mode in test process and radiated in Bottomhole pressure, it can be used for simulating heat transfer and friction characteristics of the tested heat exchanger experimental piece under high temperature operating conditions, detect whether it reaches design code requirement, expand existing heat exchange wind-tunnel design database, the engineering research for correlation provides reliable foundation.
Description
Technical field
The utility model belongs to analogue experiment installation technical field, and in particular to a kind of high temperature heat exchange wind tunnel testing system.
Background technology
Finned tube exchanger is widely used to the works such as the energy, power and aeronautics and space because of its excellent heat transfer property
In journey field.Unlike traditional finned tube exchanger, finned tube exchanger heat exchange Bottomhole pressure is under hot conditions
High temperature fluent metal or molten state salt medium, high temperature fluent metal or fused salt are by the enhanced heat exchange of finned-tube bundle, by heat
Air is transmitted to, then is brought into by the Natural Circulation of air in air, realizes effective cooling to high-temperature medium.
The performance of the finned tube exchanger to work at high temperature is needed to be tested by wind tunnel experiment, and related experiment is surveyed
Examination can be the runnability and safety evaluatio of the fluid heat transfer equipment of engineering field such as the energy, power and aeronautics and space
Reliable basis are provided.But unfortunately, due to high-temperature medium proposes particular/special requirement, rare wind to experimental system and test instrumentation
Hole experimental stand can complete the performance test of high temperature finned tube exchanger, and concrete reason has：Traditional wind tunnel experiment stand is usual
Using Air-Water, atmospheric steam-saturation water etc., design temperature is often in middle low-temperature range for heat transferring medium；High temperature gas flow is given
Experimental piece, the sealing in wind-tunnel air channel and the measurement of experiment parameter bring difficulty；In addition, it is contemplated that experimental system is answered
Polygamy and the operability of experiment, are difficult to directly use high temperature fluent metal or fused salt to be tested in test process, generally adopt
Heating condition when simulating high temperature fluent metal or fused salt in pipe with high-power Electric heating is, it is necessary to be equipped with high-power match somebody with somebody
Electric system, and high-temperature heating surface condition is simulated using special measure.Therefore, in general local heat transfer wind-tunnel stand does not have
There is versatility, it is necessary to design a kind of applied widely, high temperature heat exchange surface exchanges heat to high temperature gas flow, power of test can be realized
Strong novel heat exchange wind tunnel experiment system.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of high temperature
Exchange heat wind tunnel testing system, to detect the technology whether experimental piece heat transfer and friction characteristics under hot conditions reach design code
It is required that.
The utility model uses following technical scheme：
A kind of high temperature heat exchange wind tunnel testing system, including air loop subsystem, water circulation subsystem, electrical heating subsystem
With parameter measurement and data acquisition subsystem, the air loop subsystem is connected with the water circulation subsystem, the parameter
Measurement and data acquisition subsystem are connected with the air loop subsystem and water circulation subsystem respectively, air loop
System includes the air blower being sequentially connected, air channel of testing the speed, stable section, experimental piece and aerial cooler, the aerial cooler with
The water circulation subsystem connection, the experimental piece are connected with the electrical heating subsystem, and the electrical heating subsystem is connected with
Electrical heating power adjusts and control subsystem, for simulating high temperature tube bank working condition in the experimental piece.
Further, the electrical heating subsystem includes heating rod, and the heating rod is arranged in the experimental piece, with institute
Electrical heating power regulation and control subsystem connection are stated, the electrical heating power regulation and control subsystem use manual voltage regulation side
Formula is used to control the outlet air temperature of the experimental piece to be 25~350 DEG C.
Further, the electrical heating power regulation and control subsystem are defeated including heating rod load control casing and heating rod
Enter and hold junction box, the heating rod is connected by the heating rod input junction box with the heating rod load control casing, institute
State heating rod input junction box be used in real time monitor with show the every heating rod on/off state.
Further, data acquisition segments are respectively arranged with before and after the experimental piece, the data acquisition segments are circumferentially equidistant
From provided with some static pressure tappings, the static pressure tapping is using parallel way UNICOM and passes through stainless steel tube and differential pressure pick-up
Connection, the differential pressure pick-up are connected with the parameter measurement and data acquisition subsystem.
Further, the Pitot tube that tests the speed for measurement is provided with the air channel of testing the speed, the stable section is provided with whole
Grid are flowed, the Pitot tube that tests the speed is connected with the parameter measurement and data acquisition subsystem.
Further, the water circulation subsystem includes centrifugal water pump and cooling tower, and one end of the centrifugal water pump is successively
The other end of the centrifugal water pump is connected to by the aerial cooler and cooling tower.
Further, the parameter measurement and data acquisition subsystem include flow measurement and control device, the flow
Measurement and control device are arranged between the centrifugal water pump and aerial cooler.
Further, the blower export is provided with volume damper, for controlling the air quantity in the air channel of testing the speed.
Further, the air loop subsystem, water circulation subsystem and electrical heating subsystem respectively with Department of Electronics
System is connected to power.
Further, it is big to include main distribution screen, air blower distribution and frequency-modulation control system, heating rod for the distribution subsystem
Power electrical heating distribution system, pump and cooling tower distribution system, the air blower distribution and frequency-modulation control system are used for and described
Air loop subsystem connects, and the high-power electrical heating distribution system of heating rod is used to connect with the electrical heating subsystem,
The pump is used for cooling tower distribution system and the water circulation subsystem is connected, and the main distribution screen is used to give the drum respectively
Blower fan distribution is powered with frequency-modulation control system, the high-power electrical heating distribution system of heating rod and pump and cooling tower distribution system.
Compared with prior art, the utility model at least has the advantages that：
The utility model test system employs blowing-type wind tunnel experiment system and replaces traditional induced air type wind tunnel experiment system
System, using the teaching of the invention it is possible to provide higher pressure head is protected to air blower to overcome wind-tunnel duct resistance, avoids hot-air to fan bearing
With the destruction of sealing device, meanwhile, after experimental piece install additional water circulation subsystem high temperature air is cooled down, reduction system goes out
Mouth gas flow temperature, ensures the security of experimental system operation, experimental piece is connected with electrical heating subsystem, and is adjusted by electrical heating power
Section and control subsystem control electrical heating subsystem are heated to experimental piece, and high temperature tube bank work shape is simulated in experimental piece
State.
Further, high-temperature heating treatment is carried out to experimental piece using heating rod, which make it that this test system can be with
Carry out the heat transfer and friction characteristics experiment that experimental piece outlet air temperature is up to 350 degrees Celsius.
Further, test the speed and Pitot tube and differential pressure pick-up are installed in air channel, the accurate measurement to air quantity can be realized.
Further, rotating speed of the air blower distribution with frequency-modulation control system using frequency modulation speed change gear regulation centrifugal blower,
Coarse adjustment is carried out to supply air quantity；The air mass flow of wind-tunnel can further be adjusted by changing the controlling opening of valve on air channel, to air quantity
Fine tuning is carried out, air quantity is precisely controlled by the way of fine tuning is combined using coarse adjustment.
Further, heating power is adjusted by the way of manual voltage regulation, is easy to accurately control.
In summary, the utility model wind tunnel system simulates high-temperature liquid state gold in test process using electrically heated mode
Category or high-temperature molten salt radiate in Bottomhole pressure, can be used for simulating heat transfer of the tested heat exchanger experimental piece under high temperature operating conditions
With drag characteristic, detect whether it reaches design code requirement, expand existing heat exchange wind-tunnel design database, for related engineering
Research provides reliable foundation.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is Tthe utility model system design drawing；
Fig. 2 is embodiment high temperature experimental piece tube bank arrangement schematic diagram.
Wherein：1. air blower；2. volume damper；3. air channel of testing the speed；4. test the speed Pitot tube；5. stable section；6. experimental piece；
7. aerial cooler；8. cooling tower；9. centrifugal water pump；10. flow measurement and control device；11. electrical heating power adjusts and control
Subsystem.
Embodiment
A kind of high temperature heat exchange wind tunnel testing system of the utility model replaces traditional draw using blowing-type wind tunnel experiment system
Wind formula wind tunnel experiment system, high temperature fluent metal or fused salt are simulated in Bottomhole pressure especially by using high-power Electric heating
When high temperature heating conditions.
Referring to Fig. 1, it is used to test tube bank heat exchange and drag characteristic under hot conditions the utility model discloses a kind of
Wind tunnel testing system, high temperature heat exchange wind tunnel testing system include air loop subsystem, water circulation subsystem, electrical heating subsystem
System, distribution subsystem and parameter measurement and data acquisition subsystem, the air loop subsystem are sub with the water circulation respectively
System connects with electrical heating subsystem, and the electrical heating subsystem is connected with electrical heating power regulation and control subsystem 11, uses
In simulation high temperature tube bank working condition, the parameter measurement and data acquisition subsystem respectively with the air loop subsystem,
Water circulation subsystem and electrical heating power regulation and control subsystem 11 connect, for parameter acquisition.
Wherein, the main building block of air loop subsystem includes air blower 1, volume damper 2, air channel 3 of testing the speed, surveyed
Fast Pitot tube 4, stable section 5, experimental piece 6 and aerial cooler 7.
Test the speed Pitot tube 4 and differential pressure pick-up are installed in the air channel 3 of testing the speed, it is possible to achieve the accurate measurement to air quantity,
Honeycomb screen is provided with the stable section 5 in the downstream of air channel 3 of testing the speed, the purpose is to homogenize air velocity distribution.
The working method of air loop subsystem is that normal temperature air is blown into wind-tunnel air channel by air blower 1, adjusts frequency modulation speed change
Volume damper 2 on device and air channel adjusts air quantity to required experiment condition, and the Pitot tube 4 that tests the speed is installed in air channel 3 of testing the speed
And differential pressure pick-up, air quantity is accurately measured.Hereafter, air is successively by stable section 5, experimental piece 6, aerial cooler 7
And corresponding linkage section, honeycomb screen is provided with stable section 5, the air after flowing enters experimental piece 6 and heat exchange occurs；Due to ginseng
It is higher with the air themperature after heat exchange, the equipment in surrounding environment and experiment operator may be damaged safely, adopted
High temperature air is cooled with aerial cooler 7；Air-flow after cooling is drained into air through afterbody air channel.
Wherein, the nominal air delivery of air blower 1 is 30000m3/ h, rated head 6000Pa.
The resistance of airflow passes experimental piece 6 is provided by the differential pressure pick-up before and after experimental piece, and its measuring method is as follows：
Data acquisition segments are installed before and after experimental piece, data acquisition segments are circumferentially equidistant to be provided with ten static pressure pressures
Hole, these static pressure tappings use parallel way UNICOM, then are connected to differential pressure pick-up by stainless steel tube.
Water circulation subsystem mainly includes centrifugal water pump 9, aerial cooler 7, cooling tower 8, flow measurement and control device
10 and respective line.
Wherein, flow measurement and control device 10 are arranged between centrifugal water pump 9 and the aerial cooler 7, for flowing
Amount collection, the power of the centrifugal water pump 9 is 7.5kW, and its metered flow is 40m3/ h, lift 39m.
During work, cooling water is delivered to aerial cooler 7 by centrifugal water pump 9, is carried out heat exchange with hot-air, is made Air Temperature
Degree is reduced to horizontal close to normal temperature；The cooling water carried out with hot-air after heat exchange is delivered to cooling tower 8 and realized and ambient air
Heat exchange, the cooling water air inlet cooler water circulation system after cooling, recycle, reduce water consumption.
Electrical heating subsystem is adjusted by electrical heating power and control subsystem 11 controls, and actual work is restrained for simulating high temperature
Make state, electrical heating subsystem specifically includes heating rod, and heating rod is arranged in the experimental piece 6, with the electrical heating power
Regulation and control subsystem 11 connect, and electrical heating power regulation and control subsystem 11 are used to control institute using manual voltage regulation mode
The outlet air temperature of experimental piece 6 is stated at 25~350 DEG C, electrical heating power regulation and control subsystem 11 are mainly born by heating rod
Lotus switch board, heating rod input junction box are formed.
Wherein, heating rod is connected by heating rod input junction box with heating rod load control casing, heating rod input
Junction box is mainly controlled by heating rod load control casing, and precision transformer, face are provided with the heating rod input junction box
Plate is provided with LED, can monitor, show the on/off state of electrically heated rod in real time.
The air loop subsystem, water circulation subsystem and electrical heating subsystem are connected to distribution subsystem respectively
Powered for test system, the distribution subsystem includes main distribution screen, air blower distribution and the big work(of frequency-modulation control system, heating rod
Rate electrical heating distribution system, pump and cooling tower distribution system etc..
The air blower distribution is used for frequency-modulation control system and the air loop subsystem is connected；The heating rod is big
Power electrical heating distribution system is used to connect with the electrical heating subsystem；The pump and cooling tower distribution system are used for and described
Water circulation subsystem connects；Main distribution screen is used for high-power to the air blower distribution and frequency-modulation control system, heating rod respectively
Electrical heating distribution system and pump are powered with cooling tower distribution system.
The air blower distribution mainly includes air blower load power distribution cabinet, the air blower load distribution with frequency-modulation control system
Cabinet carries out coarse adjustment using the rotating speed of frequency modulation speed change gear regulation centrifugal blower to supply air quantity；Change the control valve on air channel
Aperture can further adjust the air mass flow of wind-tunnel, to air quantity carry out fine tuning, using coarse adjustment by the way of fine tuning is combined to wind
Amount is precisely controlled.
The high-power electrical heating distribution system of heating rod mainly includes heating rod load control casing and heating rod is special
Junction box, the regulative mode of heating power are adjusted by the way of manual voltage regulation.
The parameter measurement and data acquisition subsystem include IMP collection plates, industrial computer and display computer.Measured signal
The analog quantity of input can be converted into by data converter by digital quantity by IMP collection plates, then industry control is inputted by data wire
Machine, data acquisition, record, storage are carried out, and tunnel inlet is mainly included by display computer real-time display and monitoring, measurement parameter
Air themperature, flow, pressure, the pressure difference being tested before and after experimental piece, experimental piece high temperature finned tube metallic surface temperature is tested, be tested
Experimental piece import and export average air temperature.
Embodiment
Finned tube piping mode such as Fig. 2 used in the present embodiment.
In the present embodiment, research is a kind of to be used for finned-tube bundle heat exchange and the performance test of drag characteristic under hot conditions.
Tested as follows and parameter measurement and data acquisition.
(1) experimental system switches on power, open system monitoring programme and data process of measurement；
(2) open centrifugal pump air bleeding valve and put net air, ensure to be full of water in centrifugal pump, open water pump；
(3) valve and rate of discharge regulating valve on the cooling-water duct of aerial cooler water circulation subsystem are opened；
(4) start cooling tower, change the aperture size of valve on pipeline, water is adjusted to desired flow；
(5) start air blower, and by adjusting the volume damper on frequency modulation speed change gear and air channel, intake is adjusted
To flow needed for experiment condition, each duty parameter change of monitoring system, waiting system reaches metastable state；
(6) electrically heated rod heating power supply is opened, is started working with less electrical heating power, monitoring finned tube metal surface
Temperature；
(7) heating rod electrical heating power, monitoring high temperature finned tube metallic surface temperature, air mass flow and air are gradually increased
By the temperature before and after heat exchanger；
(8) temperature before and after high temperature finned tube metallic surface temperature, air mass flow and air pass through pipe bundle heat exchanger expires
Sufficient experiment condition and when system reaches thermal balance, multigroup experimental data is recorded by data collecting system：Including pipe bundle heat exchanger
Import and export air themperature, air pass through the pressure difference of experimental piece, and the experiment parameter such as flow of air；
(9) change electrically heated rod power, adjust the volume damper on frequency modulation speed change gear and air channel, change intake extremely
Experiment condition requirement, carries out next group of experiment；When experimental system reaches stable state, experimental data is recorded；
(10) after the experiment condition of plan terminates, it is first shut off electrically heated rod power supply；Treat experimental piece metallic surface temperature
When being reduced near room temperature, air blower is closed；Then, switch off the pump；And then close cooling tower；Final cutting is entirely tested
The power supply of system；
(11) heat transfer and the Data Processing in Experiment of resistance are carried out to gathered data.
By above-mentioned method of testing, experimental piece tube bank heat exchange and drag characteristic under hot conditions are can obtain, and then can pass through
This kind of method of testing detects the heat exchange and drag characteristic that experimental piece is restrained under different hot conditions, is provided reliably for engineering is actual
Foundation.
The utility model test system is flowed using high-power Electric heating simulation high temperature fluent metal or fused salt in pipe
High temperature heating conditions when dynamic；Employ blowing-type wind tunnel experiment system and replace traditional induced air type wind tunnel experiment system, a side
Face, can provide higher pressure head to overcome wind-tunnel duct resistance, hot-air on the other hand can be avoided to bearing of blower and
The destruction of sealing device, meanwhile, installation water circulation system cools down to high temperature air after experimental piece, ensures experimental system fortune
Capable security.
Above content is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within protection domain with new claims.
Claims (10)
- The wind tunnel testing system 1. a kind of high temperature exchanges heat, it is characterised in that including air loop subsystem, water circulation subsystem, electricity Heating subsystem and parameter measurement and data acquisition subsystem, the air loop subsystem connect with the water circulation subsystem Connect, the parameter measurement and data acquisition subsystem are connected with the air loop subsystem and water circulation subsystem respectively, institute Stating air loop subsystem includes the air blower (1) being sequentially connected, air channel of testing the speed (3), stable section (5), experimental piece (6) and air Cooler (7), the aerial cooler (7) are connected with the water circulation subsystem, the experimental piece (6) and electrical heating System connects, and the electrical heating subsystem is connected with electrical heating power regulation and control subsystem (11), in the experiment Simulation high temperature tube bank working condition in part (6).
- A kind of 2. high temperature heat exchange wind tunnel testing system according to claim 1, it is characterised in that the electrical heating subsystem Including heating rod, the heating rod is arranged in the experimental piece (6), with electrical heating power regulation and control subsystem (11) connect, the electrical heating power regulation and control subsystem (11) are used to control the experimental piece using manual voltage regulation mode (6) outlet air temperature is 25~350 DEG C.
- 3. a kind of high temperature heat exchange wind tunnel testing system according to claim 2, it is characterised in that the electrical heating power is adjusted Section and control subsystem (11) include heating rod load control casing and heating rod input junction box, described in the heating rod process Heating rod input junction box is connected with the heating rod load control casing, and the heating rod input junction box is used to supervise in real time The on/off state of the every heating rod of control and display.
- 4. a kind of high temperature heat exchange wind tunnel testing system according to claim 1, it is characterised in that before the experimental piece (6) After be respectively arranged with data acquisition segments, the data acquisition segments are circumferentially equidistant to be provided with some static pressure tappings, the static pressure Pressure port with differential pressure pick-up is connected using parallel way UNICOM and by stainless steel tube, the differential pressure pick-up and the parameter Measurement and data acquisition subsystem connection.
- A kind of 5. high temperature heat exchange wind tunnel testing system according to claim 1, it is characterised in that the air channel of testing the speed (3) Inside be provided with the Pitot tube that tests the speed (4) for measurement, the stable section (5) is provided with honeycomb screen, the Pitot tube that tests the speed (4) with The parameter measurement and data acquisition subsystem connection.
- A kind of 6. high temperature heat exchange wind tunnel testing system according to claim 1, it is characterised in that the water circulation subsystem Including centrifugal water pump (9) and cooling tower (8), one end of the centrifugal water pump (9) is successively by the aerial cooler (7) and cold But tower (8) is connected to the other end of the centrifugal water pump (9).
- 7. a kind of high temperature heat exchange wind tunnel testing system according to claim 6, it is characterised in that the parameter measurement and number Include flow measurement and control device (10) according to acquisition subsystem, the flow measurement and control device (10) be arranged on it is described from Between edema with the heart involved pump (9) and aerial cooler (7).
- 8. a kind of high temperature heat exchange wind tunnel testing system according to claim 1, it is characterised in that the air blower (1) goes out Mouth is provided with volume damper (2), for controlling the air quantity of air channel (3) of testing the speed.
- A kind of 9. high temperature heat exchange wind tunnel testing system according to claim 1, it is characterised in that the air loop subsystem System, water circulation subsystem and electrical heating subsystem are connected to power with distribution subsystem respectively.
- A kind of 10. high temperature heat exchange wind tunnel testing system according to claim 9, it is characterised in that the distribution subsystem Match somebody with somebody including main distribution screen, air blower distribution and frequency-modulation control system, heating rod high-power electrical heating distribution system, pump and cooling tower Electric system, the air blower distribution is used for frequency-modulation control system and the air loop subsystem is connected, and the heating rod is big Power electrical heating distribution system is used to connect with the electrical heating subsystem, the pump and cooling tower distribution system for and it is described Water circulation subsystem connects, and the main distribution screen is used for big to the air blower distribution and frequency-modulation control system, heating rod respectively Power electrical heating distribution system and pump are powered with cooling tower distribution system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720315070.5U CN206725184U (en) | 2017-03-28 | 2017-03-28 | A kind of high temperature heat exchange wind tunnel testing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720315070.5U CN206725184U (en) | 2017-03-28 | 2017-03-28 | A kind of high temperature heat exchange wind tunnel testing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976096A (en) * | 2017-12-18 | 2018-05-01 | 刘国斌 | A kind of high-temperature fuel gas stream tunnel airstream afterheat utilizing system |
| CN110702357A (en) * | 2019-10-30 | 2020-01-17 | 华南理工大学 | Hot and humid climate wind tunnel and multi-field coupling control system thereof |
| CN112666215A (en) * | 2021-01-12 | 2021-04-16 | 河北科技大学 | Fused salt air heat exchange performance testing device |
| CN114001986A (en) * | 2021-09-17 | 2022-02-01 | 杭州易斐换热技术有限公司 | Heat exchange amount testing device and method for battery box heat exchanger |
| CN114486308A (en) * | 2021-12-30 | 2022-05-13 | 北京动力机械研究所 | Micro-tube bundle heat exchange characteristic experiment method |
-
2017
- 2017-03-28 CN CN201720315070.5U patent/CN206725184U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976096A (en) * | 2017-12-18 | 2018-05-01 | 刘国斌 | A kind of high-temperature fuel gas stream tunnel airstream afterheat utilizing system |
| CN110702357A (en) * | 2019-10-30 | 2020-01-17 | 华南理工大学 | Hot and humid climate wind tunnel and multi-field coupling control system thereof |
| CN110702357B (en) * | 2019-10-30 | 2020-06-26 | 华南理工大学 | Hot and humid climate wind tunnel and multi-field coupling control system thereof |
| CN112666215A (en) * | 2021-01-12 | 2021-04-16 | 河北科技大学 | Fused salt air heat exchange performance testing device |
| CN114001986A (en) * | 2021-09-17 | 2022-02-01 | 杭州易斐换热技术有限公司 | Heat exchange amount testing device and method for battery box heat exchanger |
| CN114001986B (en) * | 2021-09-17 | 2024-05-24 | 杭州易斐换热技术有限公司 | Heat exchange quantity testing device and method for battery box heat exchanger |
| CN114486308A (en) * | 2021-12-30 | 2022-05-13 | 北京动力机械研究所 | Micro-tube bundle heat exchange characteristic experiment method |
| CN114486308B (en) * | 2021-12-30 | 2024-05-10 | 北京动力机械研究所 | Heat exchange characteristic experimental method for micro tube bundle |
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Granted publication date: 20171208 Termination date: 20210328 |