CN110542574A - device for verifying self-blocking behavior of sodium and carbon dioxide reactant and test method - Google Patents
device for verifying self-blocking behavior of sodium and carbon dioxide reactant and test method Download PDFInfo
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- CN110542574A CN110542574A CN201910878491.2A CN201910878491A CN110542574A CN 110542574 A CN110542574 A CN 110542574A CN 201910878491 A CN201910878491 A CN 201910878491A CN 110542574 A CN110542574 A CN 110542574A
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- Prior art keywords
- sodium
- carbon dioxide
- test device
- reaction
- pipe
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 96
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 61
- 239000011734 sodium Substances 0.000 title claims abstract description 61
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 48
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 48
- 229910001948 sodium oxide Inorganic materials 0.000 title claims abstract description 27
- 239000000376 reactant Substances 0.000 title claims abstract description 14
- 238000010998 test method Methods 0.000 title claims description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims description 46
- 229910052708 sodium Inorganic materials 0.000 claims description 34
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 19
- 239000007795 chemical reaction product Substances 0.000 claims description 18
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- NWYRNCMKWHKPAI-UHFFFAOYSA-N C(=O)=O.[Na] Chemical compound C(=O)=O.[Na] NWYRNCMKWHKPAI-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a device for verifying the self-blocking behavior of a sodium and carbon dioxide reactant, which comprises an outer cylinder, an upper flange, an air inlet connecting pipe, an air outlet connecting pipe, an anti-overflow air cavity, an anti-overflow skirt edge and a reaction sleeve.
Description
Technical Field
The invention relates to the technical field of heat exchangers in sodium-cooled fast reactors, in particular to a device and a test method for verifying self-blocking behavior of a sodium and carbon dioxide reactant.
Background
In the sodium-cooled fast reactor based on the supercritical carbon dioxide mine circulation system, the printed circuit plate heat exchanger is the main heat exchanger type. The supercritical carbon dioxide side of the printed circuit board type heat exchanger has the operating pressure of about 20MPa, the operating temperature of about 530 ℃, the sodium side has the operating pressure of about 0.1MPa and the operating temperature of 550 ℃, so that when the printed circuit board type heat exchanger operates, if micro leakage occurs, high-pressure carbon dioxide tends to migrate into sodium and further reacts with the sodium. Sodium reacts violently with carbon dioxide at high temperature (above 460 ℃), but the reactants are sodium carbonate, carbon and other particulate matter insoluble in sodium, so that the sodium-supercritical carbon dioxide reaction product has the possibility of generating self-blocking behavior in the printed circuit board heat exchanger.
therefore, whether the sodium-carbon dioxide reaction product generates self-blocking in the printed circuit plate heat exchanger is verified, and the method has important significance for the design of the printed circuit plate heat exchanger and the design of the sodium-cooled fast reactor adopting the supercritical carbon dioxide Brayton cycle system.
disclosure of Invention
aiming at the defects in the prior art, the invention aims to provide a device and a test method for verifying the self-blocking behavior of a sodium and carbon dioxide reactant, wherein the device can test whether a sodium-carbon dioxide reaction product generates self-blocking in a printed circuit board type heat exchanger or not, and provides a basis for the design of the printed circuit board type heat exchanger (such as the selection of the diameter of a sodium side pipe).
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a device for verifying sodium and carbon dioxide reactant is from stifled action, the device is including outer barrel, upper flange, admit air the takeover, the takeover of giving vent to anger, anti-overflow air cavity, anti-overflow shirt rim, reaction sleeve, wherein the upper flange is sealed fixed mounting be in on the outer barrel top face, admit air the takeover with give vent to anger the takeover respectively with outer barrel inner chamber intercommunication, reaction sleeve sets up in the outer barrel inner chamber, reaction sleeve's inner tube passes through the anti-overflow air cavity with admit air the takeover bottom and connect, the anti-overflow shirt rim sets up on the edge all around of outer tube top in the reaction sleeve.
Furthermore, the device also comprises a support rod, wherein the anti-overflow skirt is fixedly arranged on the peripheral edge of the top end of the outer sleeve in the reaction sleeve through the support rod.
Furthermore, the device also comprises a temperature thermocouple, wherein the temperature thermocouple is arranged in a thermocouple well of the outer cylinder body.
Further, the temperature thermocouple is arranged at the bottom end of the reaction sleeve.
Furthermore, one end of the supporting rod is fixedly connected to the outer end face of the bottom end of the anti-overflow air cavity, and one end of the supporting rod is connected with the inner end face of the upper end of the anti-overflow skirt edge.
Further, the diameter of the inner pipe of the reaction sleeve is the same as the width of the annular space between the inner and outer sleeves of the reaction sleeve.
Meanwhile, the invention also provides a test method based on the device for verifying the automatic behavior of the reaction product of sodium and carbon dioxide, which comprises the following steps:
1) Placing the test device in an inert gas environment, and dropping metallic sodium into an annular space of a reaction sleeve in the test device; 2) the test device is removed from the inert gas environment, and the interior of the test device is vacuumized at normal temperature; 3) heating the test apparatus to 150 ℃ to cause a flow of sodium into the inner tube and annulus of the reaction sleeve; 4) cooling the test device to room temperature so that the sodium is in a solid state; 5) filling communicated carbon dioxide gas into the test device from the inlet pipe and the outlet pipe, and heating the test device to 550 ℃ to ensure that sodium and carbon dioxide fully react; 6) after the reaction, stopping heating, cooling the test device to room temperature, transferring the test device to an inert gas environment, and observing the reaction condition of sodium and carbon dioxide; 7) moving out the test device, filling high-pressure argon into the test device through an air inlet pipe, and connecting the test device with external atmosphere through an air outlet pipe; 8) heating the test device to 550 ℃, and gradually adding high-pressure argon into the test device; 9) and whether argon gas leaks is detected by using an argon gas leak detector at the outlet pipe of the testing device.
Further, in the steps 2) and 3), sodium is filled into the inner tube and the annular space of the reaction sleeve in a vacuum and heating mode.
Further, in the above step 5), carbon dioxide of the same pressure was simultaneously charged into the test device from the inlet pipe and the outlet pipe together.
further, in the step 5), when the sodium reacts with the carbon dioxide, the inlet pipe and the outlet pipe are always in a communicated state.
Compared with the prior art, the scheme has the beneficial technical effects that: the device can be used for testing whether the sodium-carbon dioxide reaction product generates self-blocking in the printed circuit plate heat exchanger, and the result obtained by the test is used in the design of the printed circuit plate heat exchanger to provide a basis for selecting the diameter of the sodium side of the printed circuit plate heat exchanger, so that the research and development cost of the printed circuit plate heat exchanger is reduced, and the application value of the printed circuit plate heat exchanger is improved.
Drawings
Fig. 1 is a schematic diagram of the principle structure of the device for verifying the self-plugging behavior of the reaction product of sodium and carbon dioxide in the test.
In the figure:
1-upper flange, 2-air inlet connecting pipe, 3-air outlet connecting pipe, 4-anti-overflow air cavity, 5-support rod, 6-anti-overflow skirt edge, 7-reaction sleeve, 8-outer cylinder body and 9-temperature thermocouple.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The scheme aims at the problem that sodium and carbon dioxide can generate violent reaction at high temperature (above 460 ℃), but reactants of the reaction are sodium carbonate, carbon and other particles insoluble in sodium, and the possibility that a sodium-supercritical carbon dioxide reaction product generates self-blocking behavior in a printed circuit board type heat exchanger exists, so that the device for verifying and testing the self-blocking behavior of the sodium and carbon dioxide reaction product is provided, and the device can test whether the sodium-carbon dioxide reaction product generates self-blocking in the printed circuit board type heat exchanger or not, and provides a basis for selecting the diameter of the sodium side of the printed circuit board type heat exchanger.
Referring to fig. 1, the apparatus for verifying the self-plugging behavior of the reaction product of sodium and carbon dioxide in the present embodiment comprises an outer cylinder 8 made of stainless steel, a support rod 5, an upper flange 1, an air inlet connection pipe 2, an air outlet connection pipe 3, an anti-overflow air cavity 4, an anti-overflow skirt 6, a reaction sleeve 7 and a temperature thermocouple 9, wherein the upper flange 1 is fixedly and hermetically mounted on the top end face of the outer cylinder 8, the air inlet connection pipe 2 and the air outlet connection pipe 3 are respectively and vertically arranged in the inner cavity of the outer cylinder 8, the reaction sleeve 7 is vertically arranged in the inner cavity of the outer cylinder 8 and connected to the bottom end of the air inlet connection pipe 2 through the anti-overflow air cavity 4, the anti-overflow skirt 6 is arranged on the peripheral edge of the top end of the outer sleeve in the reaction sleeve 7, the temperature thermocouple 9 is arranged in the inner cavity of the outer cylinder 8, the air inlet connection pipe 2 is communicated with the inner tube of the reaction sleeve, that is, the upper end of the support rod 5 is fixedly connected to the outer end face of the bottom end of the anti-overflow air cavity 4, and the bottom end thereof is connected to the inner end face of the upper end of the anti-overflow skirt 6. The outer cylinder body 8 is used for protecting sodium from being polluted by air in the transferring and reacting processes, and the upper flange 1 is used for sealing the upper end face of the outer cylinder body 8; the gas inlet connecting pipe 2 is used for supplying inert gas and carbon dioxide reacting with sodium to the reaction sleeve 7, and after the sodium reacts with the carbon dioxide, the gas inlet connecting pipe can also be used for supplying high-pressure gas to the inner cavity of the outer cylinder 8 so as to test the pressure resistance of a reaction product; the air outlet connecting pipe 3 is used for vacuumizing, air inlet and exhaust and other functions in the experimental process; the anti-overflow air cavity 4 is used for preventing sodium from entering the air inlet connecting pipe 2; the support rod 5 is used for supporting the anti-overflow skirt edge 6 and ensuring the annular gap width of the reaction sleeve 7; the anti-overflow skirt edge 6 is used for preventing sodium from flowing into the inner cavity of the outer barrel 8; the reaction sleeve 7 is used for providing a reaction area for the reaction of sodium and carbon dioxide; the temperature thermocouple 9 is used to measure the temperature of the reaction well 7. It should be noted that, the anti-overflow air cavity and the air inlet pipe in this embodiment form a thin tubular structure, after the test is started, the reaction product is deposited in the thin tube and the annular space, and the high-pressure gas (with a pressure of 10MPa or more) input from the air inlet pipe pushes the reaction product, during the pushing process, because the inner cavity of the outer cylinder has a large volume and the air outlet pipe is communicated with the external atmosphere, the pressure born by the outer cylinder is small in practice, and therefore the designed compression value of the outer cylinder can be relatively small (0.1MPa is enough), and the whole device can greatly reduce the mass of the test container.
When in test, the air inlet connecting pipe 2 and the air outlet connecting pipe 3 of the device are connected with the upper valve and then placed in the inert gas glove box; filling 10g of sodium metal into an annular space of a reaction sleeve 7 along an anti-overflow skirt edge 6 in an inert gas glove box by using a dropper as much as possible, then moving the assembled device out of the glove box, and connecting the assembled device to a laboratory bench which can be vacuumized, inflated and heated; at normal temperature, the inside and the outside of the device are pumped into vacuum state (below 10 Mpa) from the air inlet connecting pipe 2 and the air outlet connecting pipe 3; thereafter the apparatus was heated to 150 ℃ to allow sodium to flow into the inner tube and annulus of the reaction cannula 7 (the internal and external sodium pressures were in equilibrium); cooling the device to room temperature to keep the sodium in a solid state; the carbon dioxide gas with 0.5Mpa is flushed into the device from the gas inlet connecting pipe 2 and the gas outlet connecting pipe 3, in order to ensure that the liquid sodium cannot be extruded out due to the pressure difference between the two sides of the liquid sodium when the carbon dioxide reacts with the sodium, the carbon dioxide with the same pressure is filled into the device from the inlet pipe and the gas outlet pipe together, and the inlet pipe and the gas outlet pipe are always in a communicated state in the reaction process of the carbon dioxide and the sodium; heating the device to 550 ℃ again to ensure that the sodium and the carbon dioxide fully react for 10 min; stopping heating after the reaction time is up, cooling to room temperature, cooling the device to room temperature, moving the device into a glove box, checking the reaction condition in an inert gas glove box, and confirming the reaction condition of sodium and carbon dioxide; the device is installed again, high-pressure argon is connected to the air inlet connecting pipe 2, and meanwhile the air outlet connecting pipe 3 is connected to the atmosphere; the apparatus was heated to 550 ℃ and then argon was added to the buffer tank and the pressure was increased stepwise (starting at 0.1 MPa). After the pressure is raised each time, an argon gas leak detector is used for monitoring whether argon gas is leaked out from the gas outlet connecting pipe 3, if the argon gas is leaked out, the sodium and carbon dioxide reaction device can not bear the pressure, namely, the self-blocking can not be maintained under the pressure.
in conclusion, by using the device provided by the invention to test whether the sodium-carbon dioxide reaction product generates self-blocking in the printed circuit plate heat exchanger, the result obtained by the test is used in the design of the printed circuit plate heat exchanger and provides a basis for selecting the sodium side pipe diameter of the printed circuit plate heat exchanger, so that the research and development cost of the printed circuit plate heat exchanger is reduced, and the application value of the printed circuit plate heat exchanger is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (10)
1. A device for verifying the self-plugging behavior of a sodium and carbon dioxide reactant, characterized by: the device comprises an outer barrel, an upper flange, an air inlet connecting pipe, an air outlet connecting pipe, an anti-overflow air cavity, an anti-overflow skirt edge and a reaction sleeve, wherein the upper flange is fixedly installed on the top end face of the outer barrel in a sealing mode, the air inlet connecting pipe and the air outlet connecting pipe are respectively communicated with the inner cavity of the outer barrel, the reaction sleeve is arranged in the inner cavity of the outer barrel, an inner pipe of the reaction sleeve is connected with the bottom end of the air inlet connecting pipe through the anti-overflow air cavity, and the anti-overflow skirt edge is arranged on the peripheral edge of the top end of the outer sleeve.
2. The apparatus for verifying the self-plugging behavior of a sodium and carbon dioxide reactant as defined in claim 1, wherein: the device also comprises a support rod, wherein the anti-overflow skirt edge is fixedly arranged on the peripheral edge of the top end of the outer sleeve in the reaction sleeve through the support rod.
3. a device for verifying the self-plugging behavior of a sodium and carbon dioxide reactant according to claim 1 or 2, wherein: the device also comprises a temperature thermocouple, wherein the temperature thermocouple is arranged in the thermocouple well of the outer cylinder body.
4. A device for verifying the self-plugging behavior of a sodium and carbon dioxide reactant as defined in claim 3, wherein: the temperature thermocouple is arranged at the bottom end of the reaction sleeve.
5. The apparatus for verifying the self-plugging behavior of a sodium and carbon dioxide reactant as defined in claim 2, wherein: one end of the supporting rod is fixedly connected to the outer end face of the bottom end of the anti-overflow air cavity, and one end of the supporting rod is connected with the inner end face of the upper end of the anti-overflow skirt edge.
6. The apparatus for verifying the self-plugging behavior of a sodium and carbon dioxide reactant as defined in claim 1, wherein: the diameter of the inner pipe of the reaction sleeve is the same as the width of the annular space between the inner and outer sleeves of the reaction sleeve.
7. A test method based on the device for verifying the automatic behaviour of the reaction product of sodium with carbon dioxide according to claims 1 to 6, characterized in that it comprises the following steps:
1) Placing the test device in an inert gas environment, and dropping metallic sodium into an annular space of a reaction sleeve in the test device;
2) The test device is removed from the inert gas environment, and the interior of the test device is vacuumized at normal temperature;
3) heating the test apparatus to 150 ℃ to cause sodium to flow into the inner tube and annulus of the reaction sleeve;
4) cooling the test device to room temperature so that the sodium is in a solid state;
5) Filling communicated carbon dioxide gas into the test device from the inlet pipe and the outlet pipe, and heating the test device to 550 ℃ to ensure that sodium and carbon dioxide fully react;
6) After the reaction, stopping heating, cooling the test device to room temperature, transferring the test device to an inert gas environment, and observing the reaction condition of sodium and carbon dioxide;
7) Moving out the test device, filling high-pressure argon into the test device through an air inlet pipe, and connecting the test device with external atmosphere through an air outlet pipe;
8) heating the test device to 550 ℃, and gradually adding high-pressure argon into the test device;
9) and whether argon gas leaks is detected by using an argon gas leak detector at the outlet pipe of the testing device.
8. the test method of claim 7, wherein the reaction product of sodium and carbon dioxide is automatically behaving according to the following steps: in the steps 2) and 3), sodium is completely filled into the inner tube and the annular space of the reaction sleeve by adopting a vacuum and heating mode.
9. A test method for validating the automatic behavior of the reaction product of sodium and carbon dioxide according to claim 7 or 8, characterized in that: in the step 5), carbon dioxide with the same pressure is simultaneously filled into the test device from the inlet pipe and the outlet pipe.
10. A test method for validating the automatic behavior of the reaction product of sodium and carbon dioxide according to claim 7 or 8, characterized in that: in the step 5), when the sodium reacts with the carbon dioxide, the inlet pipe and the outlet pipe are always in a communicated state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878491.2A CN110542574A (en) | 2019-09-18 | 2019-09-18 | device for verifying self-blocking behavior of sodium and carbon dioxide reactant and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878491.2A CN110542574A (en) | 2019-09-18 | 2019-09-18 | device for verifying self-blocking behavior of sodium and carbon dioxide reactant and test method |
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| CN110542574A true CN110542574A (en) | 2019-12-06 |
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| CN201910878491.2A Pending CN110542574A (en) | 2019-09-18 | 2019-09-18 | device for verifying self-blocking behavior of sodium and carbon dioxide reactant and test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098261A (en) * | 2020-08-03 | 2020-12-18 | 中国原子能科学研究院 | Device for evaporating liquid metal sodium at high temperature and high pressure and operation method |
| CN113155503A (en) * | 2021-04-30 | 2021-07-23 | 武汉理工大学 | Supercritical carbon dioxide heat exchange performance test platform for printed circuit board type heat exchanger |
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| CN101174482A (en) * | 2007-12-11 | 2008-05-07 | 中国原子能科学研究院 | Sodium-air heat exchanger |
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| CN210322336U (en) * | 2019-09-18 | 2020-04-14 | 中国原子能科学研究院 | Device for verifying self-blocking behavior of sodium and carbon dioxide reactant |
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2019
- 2019-09-18 CN CN201910878491.2A patent/CN110542574A/en active Pending
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| CN2503980Y (en) * | 2001-09-27 | 2002-08-07 | 中国科学院过程工程研究所 | Reactor for fluidization roasting and/or synthesis |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098261A (en) * | 2020-08-03 | 2020-12-18 | 中国原子能科学研究院 | Device for evaporating liquid metal sodium at high temperature and high pressure and operation method |
| CN112098261B (en) * | 2020-08-03 | 2022-03-11 | 中国原子能科学研究院 | Device for evaporating liquid metal sodium at high temperature and high pressure and operation method |
| CN113155503A (en) * | 2021-04-30 | 2021-07-23 | 武汉理工大学 | Supercritical carbon dioxide heat exchange performance test platform for printed circuit board type heat exchanger |
| CN113155503B (en) * | 2021-04-30 | 2024-03-08 | 武汉理工大学 | Supercritical carbon dioxide heat exchange performance test platform for printed circuit board type heat exchanger |
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