Thermal test method and device for high-temperature heat pipe

Abstract

The invention discloses a thermotechnical test method and device for a high-temperature heat pipe. The thermotechnical test method comprises the following steps: determining an installation angle of a to-be-tested heat pipe and the lengths of an evaporation section, a heat insulation section and a condensation section of the to-be-tested heat pipe; the to-be-tested heat pipe is heated to enter a starting stage; after the to-be-tested heat pipe enters the stable heat carrying stage, increasing the heating power to control the temperature of the heat insulation section of the to-be-tested heat pipe to continuously rise; and when the to-be-tested heat pipe reaches the preset working temperature, determining the maximum load-out power of the to-be-tested heat pipe according to the temperature data of the preset temperature point location. The invention belongs to the field of high-temperature heat pipe performance testing. The performance parameters of the high-temperature heat pipe can be accurately reflected.

Description

Technical Field

[0001] This invention relates to the field of high-temperature heat pipe performance testing, and more particularly to a method and apparatus for high-temperature heat pipe thermal testing. Background Technology

[0002] A high-temperature heat pipe is a highly efficient thermal management device that utilizes an internal working fluid to transfer heat through a phase change at high temperatures. Its basic working principle involves the hot end absorbing heat, causing the working fluid to evaporate, and then the working fluid condensing and releasing heat at the cold end, thus achieving efficient energy transfer without any moving mechanical parts. In nuclear reactors and aerospace, high-temperature heat pipes are not only used for equipment cooling but also play a crucial role in ensuring the overall safety of the system; therefore, a comprehensive and accurate assessment of their thermal performance is particularly important.

[0003] Existing high-temperature heat pipe performance testing technologies mainly rely on traditional heating methods and simple temperature monitoring techniques. Common methods include electromagnetic induction and direct electric heating to apply heat to the heat pipe. However, electromagnetic induction heating generates localized heat flow on the heat pipe wall, which can easily affect the core and even alter the working fluid state. Furthermore, in actual testing, factors such as fluctuations in cooling medium flow rate, inaccurate feedback adjustment of the heating device, and environmental heat loss make it difficult to maintain strictly stable operating conditions. This leads to fluctuations in multiple measurement results, affecting the accuracy, repeatability, and comparability of the test data. Therefore, this invention provides a high-temperature heat pipe thermal testing method and apparatus to solve the above problems. Summary of the Invention

[0004] This invention provides a method and apparatus for thermal testing of high-temperature heat pipes, which solves the technical problem of low accuracy of test data during thermal testing of high-temperature heat pipes, and achieves the technical effect of accurately reflecting the performance parameters of high-temperature heat pipes.

[0005] In a first aspect, the present invention provides a method for thermal testing of high-temperature heat pipes, comprising:

[0006] Determine the installation angle of the heat pipe to be tested and the lengths of the evaporation section, insulation section, and condensation section of the heat pipe to be tested;

[0007] Initiate the heating process of the heat pipe under test to enter the startup phase;

[0008] After the heat pipe under test enters the stable heat-carrying stage, the heating power is increased to control the temperature of the adiabatic section of the heat pipe under test to continue to rise.

[0009] Once the heat pipe under test reaches the preset operating temperature, the maximum output power of the heat pipe under test is determined based on the temperature data at the preset temperature point.

[0010] Furthermore, the heat pipe is preheated, including:

[0011] The evaporation section, insulation section, and condensation section of the heat pipe to be tested are preheated to ensure that the working fluid inside the heat pipe is completely melted and evenly distributed. Then, the evaporation section is heated at a preset heating rate or a preset heat flux density.

[0012] Furthermore, it also includes:

[0013] If the heat exchange efficiency of the adiabatic section and the condensing section of the heat pipe to be tested is lower than the preset heat exchange efficiency threshold, then the evaporation section of the heat pipe to be tested will be heated at a preset heating rate or a preset heat flux density.

[0014] Further, based on the temperature data at preset temperature points, the maximum output power of the heat pipe under test is determined, including:

[0015] If the temperature fluctuation at each preset temperature point is lower than the preset temperature fluctuation threshold within a preset time period, then the current output power of the heat pipe under test is taken as the stable output power of the heat pipe under test.

[0016] If the heat pipe under test reaches a heat transfer limit after the temperature continues to rise or the heat flux density continues to increase, the previous stable output power of the heat pipe under test shall be taken as the maximum output power of the heat pipe under test.

[0017] Furthermore, including:

[0018] The preset temperature points are all located on the wall of the heat pipe to be tested.

[0019] Further, determining the installation angle of the heat pipe under test and the lengths of its evaporation section, insulation section, and condensation section includes:

[0020] According to the preset test requirements or the type of heat pipe to be tested, determine the installation angle of the heat pipe to be tested, and install it at the installation angle;

[0021] Determine the lengths of the evaporation section, insulation section, and condensation section according to the preset size design requirements.

[0022] Secondly, the present invention provides a high-temperature heat pipe thermal testing device, comprising: an air compressor, a buffer tank, an inlet valve, a regulating valve, a flow meter, a preheater, a cooling water tank, and an outlet valve;

[0023] One end of the buffer tank is connected to the air compressor, and the other end of the buffer tank is connected to one end of the inlet valve;

[0024] The other end of the inlet valve is connected to one end of the regulating valve, and the other end of the regulating valve is connected to one end of the flow meter;

[0025] The other end of the flow meter is connected to one end of the preheater, and the other end of the preheater is connected to the inlet of the high-temperature heat pipe.

[0026] The outlet of the high-temperature heat pipe is connected to the bottom of the cooler in the cooling water tank, and the top of the cooler in the cooling water tank is connected to the outlet valve.

[0027] Furthermore, it also includes:

[0028] The cooling water tank is equipped with a drain valve and a water supply valve on its outer side;

[0029] The water supply valve is at a higher horizontal level than the drain valve, and the water supply valve and the drain valve are on the same side.

[0030] Furthermore, including:

[0031] When the high-temperature heat pipe is a gravity heat pipe, the high-temperature heat pipe is vertically installed in the high-temperature heat pipe thermal testing device;

[0032] When the high-temperature heat pipe is a tubular heat pipe with a core, the high-temperature heat pipe is horizontally placed in the high-temperature heat pipe thermal testing device.

[0033] Furthermore, including:

[0034] When air heat exchange is used, the mass flow rate of air ranges from 0 to 100 kg / h.

[0035] One or more technical solutions provided in this invention have at least the following technical effects or advantages:

[0036] This invention establishes a standardized testing process, including: installation and testing before the experiment, selection of the start-up method and control of the heating rate during the experiment, and criteria for determining steady-state operating conditions. By determining the initial state of the heat pipe, automating the start-up and stable heat-carrying phases, and rigorously judging the stable operating conditions of the heat pipe, this invention evaluates the heat pipe, thereby significantly improving the repeatability and accuracy of test data and solving the measurement error problems caused by environmental interference and data instability in traditional testing processes.

[0037] This invention provides a high-temperature heat pipe thermal performance testing device, comprising: an air compressor, a buffer tank, an inlet valve, a regulating valve, a flow meter, a preheater, a cooling water tank, and an outlet valve; one end of the buffer tank is connected to the air compressor, and the other end of the buffer tank is connected to one end of the inlet valve; the other end of the inlet valve is connected to one end of the regulating valve, and the other end of the regulating valve is connected to one end of the flow meter; the other end of the flow meter is connected to one end of the preheater, and the other end of the preheater is connected to the inlet of the high-temperature heat pipe; the outlet of the high-temperature heat pipe is connected to the bottom of the cooler in the cooling water tank, and the top of the cooler in the cooling water tank is connected to the outlet valve. This invention provides an efficient and reliable testing platform for the accurate evaluation of the thermal performance of high-temperature heat pipes. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A schematic flowchart of a high-temperature heat pipe thermal testing method provided by the present invention;

[0040] Figure 2 This invention provides a schematic diagram of the structure of a high-temperature heat pipe thermal testing device.

[0041] Figure 3 This is a schematic diagram of the installation inspection and performance testing process provided by the present invention.

[0042] Figure Labels

[0043] 1-Air compressor, 2-Buffer tank, 3-Inlet valve, 4-Regulating valve, 5-Flow meter, 6-Preheater, 7-Cooling water tank, 8-Outlet valve. Detailed Implementation

[0044] This invention provides a method for thermal testing of high-temperature heat pipes, which solves the technical problem of low accuracy of test data in existing high-temperature heat pipe thermal testing.

[0045] The technical solution of this invention is to solve the above-mentioned technical problems, and the overall idea is as follows:

[0046] A method for thermal testing of a high-temperature heat pipe includes: determining the installation angle of the heat pipe to be tested and the lengths of its evaporation section, adiabatic section, and condensation section; initiating heating of the heat pipe to be tested; increasing the heating power after the heat pipe enters a stable heat-carrying stage to control the continuous rise in temperature of the adiabatic section of the heat pipe; and determining the maximum output power of the heat pipe to be tested based on temperature data at preset temperature points after the heat pipe reaches a preset operating temperature.

[0047] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0048] First, it should be clarified that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] This invention provides, for example Figure 1 The method for thermal testing of a high-temperature heat pipe, as shown, includes steps S11-S14:

[0050] Step S11: Determine the installation angle of the heat pipe to be tested and the lengths of the evaporation section, insulation section, and condensation section of the heat pipe to be tested.

[0051] Specifically, this includes: determining the installation angle of the heat pipe to be tested based on the preset test requirements or the type of heat pipe to be tested, and installing it at the specified installation angle; and determining the lengths of the evaporation section, the insulation section, and the condensation section based on the preset size design requirements.

[0052] The types of heat pipes to be tested include gravity heat pipes and tubular heat pipes with a core. The preset test requirements can be set according to the actual situation. If there are preset test requirements, the installation angle of the heat pipe to be tested will be determined according to the preset test requirements. If there are no preset test requirements, gravity heat pipes will be tested under vertical conditions, and tubular heat pipes with a core will be tested under horizontal conditions.

[0053] The preset size design requirements can be determined according to actual needs, and there are no restrictions here. Before starting the test, it is necessary to ensure that the lengths of the evaporation section, the insulation section and the condensation section meet the preset size design requirements.

[0054] In addition, the present invention provides that temperature monitoring points can be set on the heat pipe wall, the outer side of the insulation layer, and the cooling circuit for temperature data collection.

[0055] Step S12 initiates the heating of the heat pipe under test into the start-up phase.

[0056] [Heat pipe startup phase a]

[0057] The evaporation section, adiabatic section, and condensation section of the heat pipe under test are preheated to ensure that the working fluid inside the heat pipe is completely melted and evenly distributed. Then, the evaporation section is heated at a preset heating rate or preset heat flux density. The preset heating rate or preset heat flux density can be set according to actual conditions, with the aim of ensuring a smooth start-up process for the heat pipe under test.

[0058] [Heat pipe startup phase b]

[0059] When preheating of the heat pipe under test is not required, or when it is a gravity heat pipe, preheating is not necessary. The evaporation section of the heat pipe under test can be directly heated at a preset heating rate or preset heat flux density when the heat exchange efficiency of the adiabatic and condensation sections is lower than a preset heat exchange efficiency threshold. In step S13, after the heat pipe under test enters a stable heat-carrying stage, the heating power is increased to control the continuous temperature rise of the adiabatic section of the heat pipe under test.

[0060] After the heat pipe under test is started, it enters the stable heat transfer stage. At this time, the condensation section of the heat pipe under test begins to output heat, which is transferred through direct convection heat exchange with flowing high-temperature air or indirect heat exchange through flowing cooling water via the air gap. During this stage, the temperature of the heat pipe insulation section is gradually increased by gradually increasing the heating power and strengthening heat exchange.

[0061] Step S14: After the heat pipe to be tested reaches the preset operating temperature, determine the maximum output power of the heat pipe to be tested based on the temperature data at the preset temperature point.

[0062] After the heat to be tested reaches the preset operating temperature, the heating power is increased (at a preset rate) and the cooling heat exchange is continuously enhanced.

[0063] Based on temperature data from preset temperature points, the maximum output power of the heat pipe under test is determined, including: if the temperature fluctuation at each preset temperature point within a preset time period is lower than a preset temperature fluctuation threshold, then the current output power of the heat pipe under test is taken as the stable output power of the heat pipe under test. If the heat pipe under test reaches a heat transfer limit after further heating or a continued increase in heat flux density, then the previous stable output power of the heat pipe under test is taken as the maximum output power of the heat pipe under test. Specifically, the inventors provide a method in which, after the heat pipe under test reaches a preset operating temperature, the heating power is further increased and the cooling is intensified. If the fluctuation of all temperature measuring points on the wall of the heat pipe under test is less than 5°C within 5 consecutive minutes, then the heat pipe is considered to have reached a steady-state condition. The heating power is further increased and the cooling is intensified to bring the heat pipe to a higher power steady-state condition. This intensification is repeated until the heat pipe reaches its limit, that is, the output power of the heat pipe under test at the previous steady-state condition is the maximum output power.

[0064] The preset temperature points are all located on the wall of the heat pipe to be tested. In addition, the preset temperature points can also be set on the outside of the insulation layer and the cooling circuit.

[0065] To further reduce random errors in the test, each heat pipe can be tested at least three times, and the average value can be taken as the performance evaluation result of the heat pipe under test.

[0066] In summary, this invention establishes a standardized testing process, including: installation and testing before the experiment, selection of the start-up method and control of the heating rate during the experiment, and criteria for determining steady-state operating conditions. This invention evaluates the heat pipe by determining its initial state, automating the start-up and stable heat-carrying phases, and rigorously judging its stable operating conditions. This significantly improves the repeatability and accuracy of test data and solves the measurement error problems caused by environmental interference and data instability in traditional testing processes.

[0067] Based on the same inventive concept, the present invention provides, as follows: Figure 2 The high-temperature heat pipe thermal testing device shown includes: an air compressor 1, a buffer tank 2, an inlet valve 3, a regulating valve 4, a flow meter 5, a preheater 6, a cooling water tank 7, and an outlet valve 8; one end of the buffer tank 2 is connected to the air compressor 1, and the other end of the buffer tank 2 is connected to one end of the inlet valve 3; the other end of the inlet valve 3 is connected to one end of the regulating valve 4, and the other end of the regulating valve 4 is connected to one end of the flow meter 5; the other end of the flow meter 5 is connected to one end of the preheater 6, and the other end of the preheater 6 is connected to the inlet of the high-temperature heat pipe; the outlet of the high-temperature heat pipe is connected to the bottom of the cooler in the cooling water tank 7, and the top of the cooler in the cooling water tank 7 is connected to the outlet valve 8. Figure 2 The test body in the experiment is the heat pipe to be tested.

[0068] It also includes: a drain valve and a water supply valve are provided on the outside of the cooling water tank 7; the water supply valve is at a higher horizontal level than the drain valve, and the water supply valve and the drain valve are on the same side.

[0069] This includes: when the high-temperature heat pipe is a gravity heat pipe, the high-temperature heat pipe is vertically installed in the high-temperature heat pipe thermal testing device; when the high-temperature heat pipe is a tubular heat pipe with a core, the high-temperature heat pipe is horizontally installed in the high-temperature heat pipe thermal testing device.

[0070] This includes: when air heat exchange is used, the mass flow rate of air is in the range of 0-100 kg / h.

[0071] Heating system (please refer to) Figure 2 The positive and negative electrodes can be heated electrically. Figure 2The positive and negative poles in the diagram only indicate heating of the evaporation section of the high-temperature (under test) heat pipe. A high-temperature electric heating element can be used as the heat source. After being energized, the high-temperature electric heating element generates stable heat energy. The heating element is tightly wrapped around the surface of the heat pipe, heating the outer layer of the heat pipe. Heat is indirectly transferred to the metal wall of the heat pipe through various means such as heat conduction, convection, and radiation between the element and the heat pipe, ensuring that the heating process does not directly stimulate the heat flow inside the heat pipe and interfere with the core and working fluid, thus maintaining the authenticity of the test process. The maximum heat flux density of the high-temperature (under test) heat pipe is approximately 12 kW / m. The preheater 6 can use a high-precision DC power supply and be automatically controlled, realizing accurate regulation of the heating power, thereby ensuring the accuracy and repeatability of the thermal performance test data.

[0072] This invention addresses the cooling process of high-temperature heat pipes by designing multiple cooling methods. The cooling system includes a high-temperature air circuit and a medium-pressure water-cooled circuit (i.e.,...). Figure 2 (The formed circuit). Cooling can be achieved through direct convective heat exchange between high-temperature air and the heat pipe, or through indirect convective heat exchange between the air pipe and cooling water via an air gap. When using high-temperature air as the heat exchange medium, its inlet temperature can be flexibly adjusted, ranging from room temperature to a maximum of 500℃, while the air mass flow rate can be continuously controlled within the range of 0 to 100 kg / h. When using cooling water as the heat exchange medium, its mass flow rate can be continuously controlled within the range of 0 to 500 kg / h. The device's cooling system can respond quickly according to test requirements, meeting the needs of heat pipe thermal performance testing.

[0073] Apart from Figure 2 In addition to the provided equipment, each device can also be connected to several types of sensors to collect multiple key parameters in real time, such as heat pipe wall temperature, cooling fluid flow rate, pressure, and the working status of the heating element. The heating power is then finely adjusted through an automated control system to ensure that all parameters are maintained within the set range during the test, thereby improving the accuracy and reliability of the test results. Furthermore, when the set safety threshold is reached, an alarm interlock protection is triggered in a timely manner to ensure test safety.

[0074] The following describes the entire testing process. The heat exchange medium used in this test is air:

[0075] Air is pressurized by air compressor 1 and maintained at a certain pressure by a buffer. It is first discharged into the main pipe and then distributed to each branch pipe. In the preheater 6 of each branch pipe, it is heated to a certain predetermined value. After entering the heat pipe cooling assembly, it is further heated by the heat pipe. The heated high-temperature air is cooled to a certain temperature by the water in the cooling water tank 7 in the cooler of each branch pipe and then discharged into the atmosphere, completing one cycle.

[0076] In a thermal performance test of a tubular heat pipe with a core according to one embodiment of the present invention, the performance test is conducted in a horizontal arrangement, using a high-temperature electric heating element for heating and high-temperature air for cooling. The specific test procedure is as follows:

[0077] Confirm the heat pipe number to be tested, and then perform work such as thermocouple welding, high-temperature heating element installation, and air-cooling jacket installation.

[0078] Measure the position of each measuring point on the heat pipe, and measure the length of the unheated section, the length of the heated section, and the length of the effective cooling section of the heat pipe; measure the levelness of the heat pipe to ensure that the heat pipe is placed horizontally.

[0079] Determine the measurement and control communication signals and the initial state of the equipment.

[0080] An adiabatic start-up method is adopted, with an initial heating power given and the heating power increased at a constant rate;

[0081] After the entire heat pipe section is started up, it enters the stable heat carrying phase.

[0082] Increase heating power while enhancing cooling, slowly increase airflow, maintain the average temperature of the heat pipe insulation section within the operating temperature range, and maintain a steady-state operating step for every 5 kg / h increase in airflow and record relevant parameters.

[0083] Once the heat pipe reaches the target operating condition, record the test data, disconnect the power supply, shut down the equipment, and stop the test.

[0084] In addition, this invention can simultaneously test multiple external testing systems, specifically:

[0085] Three independent testing systems—horizontal, tilt, and vertical—each support batch testing of multiple heat pipes.

[0086] In summary, this invention provides a high-temperature heat pipe thermal performance testing device, comprising: an air compressor 1, a buffer tank 2, an inlet valve 3, a regulating valve 4, a flow meter 5, a preheater 6, a cooling water tank 7, and an outlet valve 8. One end of the buffer tank 2 is connected to the air compressor 1, and the other end of the buffer tank 2 is connected to one end of the inlet valve 3. The other end of the inlet valve 3 is connected to one end of the regulating valve 4, and the other end of the regulating valve 4 is connected to one end of the flow meter 5. The other end of the flow meter 5 is connected to one end of the preheater 6, and the other end of the preheater 6 is connected to the inlet of the high-temperature heat pipe. The outlet of the high-temperature heat pipe is connected to the bottom of the cooler in the cooling water tank 7, and the top of the cooler in the cooling water tank 7 is connected to the outlet valve 8. This invention provides an efficient and reliable testing platform for the accurate evaluation of the thermal performance of high-temperature heat pipes.

[0087] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0088] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for thermal testing of high-temperature heat pipes, characterized in that, include: Determine the installation angle of the heat pipe to be tested and the lengths of the evaporation section, insulation section, and condensation section of the heat pipe to be tested; Initiate the heating process of the heat pipe under test to enter the startup phase; After the heat pipe under test enters the stable heat-carrying stage, the heating power is increased to control the temperature of the adiabatic section of the heat pipe under test to continue to rise. Once the heat pipe under test reaches the preset operating temperature, the maximum output power of the heat pipe under test is determined based on the temperature data at the preset temperature point.

2. The high-temperature heat pipe thermal testing method as described in claim 1, characterized in that, Preheating the heat pipe includes: The evaporation section, insulation section, and condensation section of the heat pipe to be tested are preheated to ensure that the working fluid inside the heat pipe is completely melted and evenly distributed. Then, the evaporation section is heated at a preset heating rate or a preset heat flux density.

3. The high-temperature heat pipe thermal testing method as described in claim 1, characterized in that, Also includes: If the heat exchange efficiency of the adiabatic section and the condensing section of the heat pipe to be tested is lower than the preset heat exchange efficiency threshold, then the evaporation section of the heat pipe to be tested will be heated at a preset heating rate or a preset heat flux density.

4. The high-temperature heat pipe thermal testing method as described in claim 1, characterized in that, Based on the temperature data at preset temperature points, the maximum output power of the heat pipe under test is determined, including: If the temperature fluctuation at each preset temperature point is lower than the preset temperature fluctuation threshold within a preset time period, then the current output power of the heat pipe under test is taken as the stable output power of the heat pipe under test. If the heat pipe under test reaches a heat transfer limit after the temperature continues to rise or the heat flux density continues to increase, the previous stable output power of the heat pipe under test shall be taken as the maximum output power of the heat pipe under test.

5. The high-temperature heat pipe thermal testing method as described in claim 4, characterized in that, include: The preset temperature points are all located on the wall of the heat pipe to be tested.

6. The high-temperature heat pipe thermal testing method as described in claim 1, characterized in that, Determining the installation angle of the heat pipe under test and the lengths of its evaporation, insulation, and condensation sections includes: According to the preset test requirements or the type of heat pipe to be tested, determine the installation angle of the heat pipe to be tested, and install it at the installation angle; Determine the lengths of the evaporation section, insulation section, and condensation section according to the preset size design requirements.

7. A high-temperature heat pipe thermal testing device, characterized in that, A high-temperature heat pipe thermal testing method applicable to any one of claims 1-6 includes: an air compressor, a buffer tank, an inlet valve, a regulating valve, a flow meter, a preheater, a cooling water tank, and an outlet valve; One end of the buffer tank is connected to the air compressor, and the other end of the buffer tank is connected to one end of the inlet valve; The other end of the inlet valve is connected to one end of the regulating valve, and the other end of the regulating valve is connected to one end of the flow meter; The other end of the flow meter is connected to one end of the preheater, and the other end of the preheater is connected to the inlet of the high-temperature heat pipe. The outlet of the high-temperature heat pipe is connected to the bottom of the cooler in the cooling water tank, and the top of the cooler in the cooling water tank is connected to the outlet valve.

8. The high-temperature heat pipe thermal testing device as described in claim 7, characterized in that, Also includes: The cooling water tank is equipped with a drain valve and a water supply valve on its outer side; The water supply valve is at a higher horizontal level than the drain valve, and the water supply valve and the drain valve are on the same side.

9. A high-temperature heat pipe thermal testing device as described in claim 7, characterized in that, include: When the high-temperature heat pipe is a gravity heat pipe, the high-temperature heat pipe is vertically installed in the high-temperature heat pipe thermal testing device; When the high-temperature heat pipe is a tubular heat pipe with a core, the high-temperature heat pipe is horizontally placed in the high-temperature heat pipe thermal testing device.

10. A high-temperature heat pipe thermal testing device as described in claim 7, characterized in that, include: When air heat exchange is used, the mass flow rate of air ranges from 0 to 100 kg / h.

Images