97 results about "Loop heat pipe" patented technology

The invention discloses a loop heat pipe and water heat storage coupling system and a working method, and belongs to the technical field of heat storage. The system has the modes of light gathering of the light-following trough heat collector, heat conduction of the loop heat pipe, heat storage of the water storage tank and warm water irrigation by using the stored heat water. When sunlight is sufficient in the daytime, the system converts solar energy into sensible heat of water in the heat storage water tank and stores the sensible heat, and the sensible heat is insulated by soil to slow down heat loss; when plants need to be irrigated, warm water in the irrigation water tank is used for irrigation; at night or in the absence of illumination, warm water in the heat storage water tank exchanges heat with air in the greenhouse, so that a lasting and stable heat supply source is provided for the greenhouse. Solar energy collected by the heat collecting groove is efficiently transmitted into the water tank through the loop heat pipe driven by temperature difference to be converted into sensible heat of water to be stored, the sensible heat is used for increasing the greenhouse temperature and irrigating plants when heat is needed at night, and the purposes of efficiently storing heat in the daytime and continuously supplying heat at night are integrally achieved.

The invention discloses a gravity loop heat pipe based on a vein type flow channel and a radiator. The gravity loop heat pipe based on the vein type flow channel comprises an evaporation assembly, an installation support, a condensation assembly, a medium injection opening communicated with the evaporation assembly, an input copper pipe and a backflow copper pipe. A medium is input into the evaporation assembly through the medium injection port, forms steam after absorbing heat, flows into the condensation assembly through the input copper pipe, and flows back to the evaporation assembly through the backflow copper pipe after completing heat exchange in the condensation assembly. By means of the vein vapor chamber, the condensation efficiency is remarkably improved, the size of the condensation assembly is reduced, the working medium backflow path is prolonged, and more sufficient heat exchange is achieved. The external water cooling structure improves the heat dissipation efficiency, is not limited by the interior of the case, and is flexible to install. In addition, due to different structural designs of the gas pipeline and the liquid pipeline, the problems of backflow in advance and drying of a working medium in the evaporation box body are effectively avoided, and the operation efficiency and reliability of the heat pipe are integrally improved.

The utility model discloses a loop heat pipe heat dissipation device, relates to loop heat pipe heat dissipation technical field, the loop heat pipe heat dissipation device comprises a plurality of evaporators, a plurality of pipeline structures and a condenser, each evaporator is provided with a liquid storage chamber and a steam chamber which are communicated along the thickness direction of the evaporator, the liquid storage chamber is used for storing cooling medium, and the steam chamber is used for storing steam. The steam cavities are used for storing steam formed by evaporation of a cooling medium, each pipeline structure comprises a liquid pipeline and a steam pipeline, the steam pipeline is communicated with the multiple steam cavities, and the liquid pipeline is communicated with the multiple liquid storage cavities; the condenser is provided with an air inlet and a liquid outlet which are arranged at intervals, the air inlet is communicated with the steam pipeline, and the liquid outlet is communicated with the liquid pipeline; wherein steam discharged by the steam cavities is collected and enters the condenser, and cooling media generated by condensation of the condenser are mixed and then fed into the liquid storage cavities. Heat dissipation cooperation can be carried out on a plurality of heating devices, and the stability of multiple chips under a high-load operation condition is ensured. Meanwhile, the occupied space of the evaporator is reduced.

The utility model relates to the technical field of temperature control, in particular to a flow loop heat pipe high-stability temperature control device which comprises a shell, the shell comprises a base, an outer frame is fixedly connected to the upper surface of the base, a heat dissipation assembly is fixedly connected to the interior of the outer frame and comprises a condenser, and a liquid pipe is fixedly connected to the lower end of the condenser. One end of the liquid pipe is fixedly connected with a compensation tank, the upper surface of the compensation tank is fixedly connected with a water pump, one end of the water pump is fixedly connected with a water feeding pipe, one end of the water feeding pipe is fixedly connected with an evaporator, the evaporator heats and gasifies cooling liquid after absorbing heat, and the other end of the evaporator is fixedly connected with a steam pipe. By accurately controlling the working temperature of the flow loop heat pipe, it is ensured that a working medium in the heat pipe operates under the optimal phase change condition, heat can be efficiently transmitted to a radiator from a heat source, and at the evaporator end, stable temperature control ensures that the working medium fully absorbs the heat and is rapidly vaporized.

The invention discloses a loop heat pipe and a heat dissipation method of an AI all-in-one machine, and relates to the field of AI. The loop heat pipe comprises a two-phase cold plate, a steam pipeline, a liquid pipeline and a cold discharge heat exchanger, an evaporator is arranged in the two-phase cold plate and comprises a porous fine hair structure, and the steam outlet end of the evaporator of the two-phase cold plate is connected with one end of the steam pipeline; one end of the liquid pipeline is connected with the liquid outlet end of the cold discharge heat exchanger, and the other end of the liquid pipeline is connected with the liquid inlet end of the evaporator of the two-phase cold plate; the two-phase cold plate is used for being tightly attached to a heat dissipation component of the AI all-in-one machine. And the cold discharge heat exchanger is in communication connection with the AI all-in-one machine. According to the AI all-in-one machine, when the heat dissipation part of the AI all-in-one machine is subjected to heat dissipation, a fully-closed heat dissipation structure is adopted, the liquid leakage risk is effectively reduced, the fully-closed heat dissipation structure achieves heat dissipation through two-phase circulation, movement in the internal heat dissipation process is self-driven, and any external force such as a water pump is not needed.

The application discloses a loop heat pipe system for a hypersonic aircraft, and relates to the technical field of electronic thermal protection, comprising at least two loop heat pipe structures, a loop track and a liquid metal cabin; the loop heat pipe structures are connected through connecting strips to keep the relative positions fixed, and are used for heat protection of electronic devices of the hypersonic aircraft through working medium circulation; the loop track is located at the top of the two loop heat pipe structures, and is slidably connected with the two loop heat pipe structures respectively, so that the two loop heat pipe structures move along the circumference of the loop track; the liquid metal cabin is arranged between the two loop heat pipe structures and the electronic devices, and is used for conducting the heat generated by the electronic devices. The loop heat pipe system sets multiple loop heat pipe structures on the loop track, so that the heat management devices of the aircraft can be adaptively adjusted in position under different attitudes or vibration conditions, thereby effectively improving the heat management efficiency.

The application relates to a new energy automobile "three-electricity" thermal control system based on a loop heat pipe in the technical field of new energy automobile thermal management, which comprises three-electricity components and a loop heat pipe; the three-electricity components comprise an electric drive, an electric control and a battery pack; the loop heat pipe comprises an evaporator assembly, a main condenser, a secondary condenser, a cold plate assembly, a pipeline system and a stop valve; the cold plate assembly comprises an electric control cold plate group and a battery pack cold plate group. The loop heat pipe in the application forms a self-adapting passive phase change heat transfer two-phase fluid loop in the three-electricity components, does not need to provide additional power consumption by a pump, has better energy-saving effect, only needs to control the temperature of a liquid accumulator, and has simple control logic; the system thermal resistance is small, and the temperature uniformity can be guaranteed to be within 1 DEG C.

The application discloses a kind of multi-channel loop heat pipe and radiator, comprising: heat pipe body and heat pipe cover, heat pipe cover is set in the open side of heat pipe body cavity;Heat pipe body has evaporation cavity and multiple condensation cavities, multiple condensation cavities are evenly distributed in the outer circumferential side of evaporation cavity, each condensation cavity is communicated with evaporation cavity by corresponding steam passage and liquid passage, to form multiple circulation heat dissipation structure, each condensation cavity and each liquid passage are provided with liquid storage cavity between.The application adopts new type loop heat pipe of multiple condensation cavities sharing an evaporation cavity, not only compact overall structure, small space occupation, and, compared with single loop, heat dissipation effect can be increased by 3-4 times, greatly improve heat dissipation capacity;And can adapt to different orientation in gravitational field and acceleration field, can be applied in high-power computing power module heat dissipation and aerospace field heat dissipation.

The utility model relates to a loop heat pipe-based compact liquid cooling radiator for a high-density server in the technical field of chip heat dissipation. The loop heat pipe-based compact liquid cooling radiator comprises at least one evaporator, a shell-and-tube condenser, at least one steam pipeline, at least one liquid pipeline, a first quick connector and a second quick connector, the evaporator is connected with the shell-and-tube condenser through a steam pipeline and a liquid pipeline; the first quick connector and the second quick connector are arranged on the shell-and-tube condenser; the first quick connector is used for cooling water to enter the shell-and-tube condenser; the second quick connector is used for cooling water to flow out of the shell type condenser; the evaporator comprises a capillary wick; the steam pipeline and the liquid pipeline are flexible pipelines. Under the limitation of a small space, the ultrahigh heat flux density requirement can be met, the liquid leakage risk is avoided, the noise influence and vibration damage are reduced, the service life is long, and the reliability is high; the evaporator and the shell-and-tube condenser are connected through a flexible pipeline, and convenience is provided for miniaturization design of electronic components.

This invention provides a heat dissipation system with a tertiary loop heat pipe, comprising a cooling tower, a heat exchange unit, an immersion cooling chamber, and a heat source. The cooling tower and the heat exchange unit are thermally connected via a primary loop, the heat exchange unit and the immersion cooling chamber are thermally connected via a secondary loop, and the immersion cooling chamber and the heat source are thermally connected via a tertiary loop. The tertiary loop is a loop heat pipe, wherein the evaporator end of the loop heat pipe is thermally connected to the heat source to absorb heat, and the condenser end of the loop heat pipe is located within the immersion cooling chamber. This invention's heat dissipation system adds a tertiary gas-liquid circulation pipeline, allowing the heat exchange unit inside the immersion cooling chamber to be immersed within the chamber, enhancing heat transfer and improving overall heat dissipation efficiency.

The utility model relates to the field of loop heat pipes, in particular to an evaporator loop heat pipe which comprises an evaporator, a condenser and a liquid storage device, a capillary core is arranged in the evaporator and divides the interior of the evaporator into an upper cavity and a lower cavity, and the liquid storage device is communicated with the upper cavity through a liquid pipeline. According to the loop heat pipe of the evaporator, the size of the channel can be changed by changing the number of the filling strips blocking the water flow grooves, namely, the capacity of liquid flowing into the capillary core in unit time is changed, namely, the storage capacity between the capillary core and the upper cavity is reduced, and therefore the heat exchange efficiency of the evaporator is improved. The liquid flows through the capillary core before vaporization, the working medium phase change time of the liquid is prolonged, and the service life of the loop heat pipe is prolonged. And the flow of the liquid can be adjusted according to various air temperature environments, so that the liquid can flow through the capillary core before being vaporized. And meanwhile, the filling strips can also achieve the effects of thickening the outer wall and blocking heat, so that the heat directly acting on the liquid is reduced.

The utility model relates to a kind of high-pressure visual loop heat pipe condensers in loop heat pipe heat dissipation technical field, including bottom plate, glass plate, polytetrafluoroethylene gasket, stainless steel gasket, elastic pad, bolt, bolt hole sealing ring, outer ring sealing ring, flow passage sealing ring, import pipe and export pipe.The utility model is in bottom plate and is opened out serpentine flow channel groove and the sealing groove of surrounding flow channel, using the thicker glass plate of equal size with condenser, utilize bolt fixed glass plate and bottom plate, and using sealing ring sealing flow channel around prevents working medium leakage.The condenser of the utility model has high-pressure characteristic and vapor-liquid two-phase full domain visual monitoring capability, while maintaining high-efficiency heat dissipation and structural stability, and has important value to improve the design precision of loop heat pipe, fault diagnosis capability and dynamic control level.

The invention provides a new energy automobile heat management system based on a double-reservoir capillary pump driving loop heat pipe, the loop heat pipe comprises a capillary pump, a condenser, an evaporator, a fan, a heat dissipation solenoid valve and a heating solenoid valve, and a condenser pipeline where the condenser is located and the capillary pump form a loop pipeline. A heat dissipation electromagnetic valve is arranged on the condenser pipeline, a heating electromagnetic valve is arranged on the evaporator pipeline where the evaporator is located, the evaporator pipeline and the condenser pipeline are connected in parallel, the evaporator and the condenser are in thermal connection, and the fan is used for heat dissipation of the condenser. According to the new energy automobile heat management system based on the double-reservoir capillary pump driving loop heat pipe, the heat dissipation and heating requirements of a heat source can be met at the same time, the heat dissipation efficiency of the heat source is improved, and the service life is prolonged.

The utility model relates to the field of chip heat dissipation, especially a high performance loop heat pipe heat dissipation device for chip heat dissipation, the evaporator is composed of evaporation end cover, evaporation bottom surface and sintered porous capillary core, the sintered porous capillary core divides the inner chamber of evaporator into the liquid storage cavity of upper part and the evaporation area of lower part, the inner surface of evaporation bottom surface is equipped with micron level micro channel structure, and the sintered porous capillary core is welded on evaporation bottom surface. In the utility model, through the synergistic effect of micro channel structure in the evaporator and sintered porous capillary core, cooperate the double-sided fine capillary condensing structure on the condenser, strengthen the phase change heat transfer process, to realize the heat dissipation performance of extremely low thermal resistance, super high heat flow density and big total heat transfer quantity, the heat dissipation capacity is greatly promoted compared with the existing liquid cooling technology, can satisfy the severe heat dissipation demand of high performance chip, and the system operation is stable and reliable, improves the heat dissipation effect of high heat density chip.

A thermal management system (10) configured to regulate the temperature of a plurality of vehicle components (11, 11 ', 12, 13) is disclosed. The system (10) comprises an expansion tank (5) and a plurality of coolant circuits (1, 2, 3) each configured to regulate a temperature of a vehicle component (11, 11 ', 12, 13) of the plurality of vehicle components (11, 11', 12, 13). Each coolant circuit (1, 2, 3) of the plurality of coolant circuits (1, 2, 3) comprises a heat exchanger (31, 32, 33) configured to regulate a temperature of coolant in the coolant circuit (1, 2, 3), a coolant pump (21, 22, 23) comprising a pump inlet (21 ', 22', 23 '), and a static pressure line (41, 42, 43) fluidly connecting the pump inlet (21', 22 ', 23') to the expansion tank (5). The disclosure further relates to a vehicle (30) comprising the thermal management system (10).

The application belongs to the technical field of solar absorption refrigeration and air water production, and discloses a solar-driven absorption water production device coupled with a loop heat pipe and a solution energy storage.The application has two working states, namely, a charging state and a discharging state.The energy storage unit converts the excess solar energy into the chemical potential energy of the solution and stores the chemical potential energy into a storage tank when the solar energy is sufficient.The energy storage unit can continue to maintain the operation of the absorption refrigeration when the solar energy is insufficient, and the water production process is completed.In the application, the absorption refrigeration unit adopts a water-lithium bromide working medium pair, the absorption refrigeration is driven by the solar energy to realize the cooling air dew condensation water production, the energy storage unit can ensure that the device can continuously work and produce water when the solar energy is insufficient, the heat pipe loop can improve the cold quantity transmission efficiency and the water production efficiency, and the device structure is compact.The application is energy-saving and environment-friendly, can satisfy the fresh water demand of people at any time, and can effectively solve the problem of lack of fresh water resources in coastal areas.

The utility model discloses a composite two-stage core flat plate type loop heat pipe evaporator and a loop heat pipe system, and relates to the technical field of heat dissipation, the composite two-stage core flat plate type loop heat pipe evaporator comprises an evaporation mechanism and a loop pipeline mechanism, the evaporation mechanism comprises an evaporator upper shell, an evaporator lower shell, a first-stage liquid absorption core and a second-stage liquid absorption core, the evaporator upper shell is of a flat plate type cavity structure, and the loop pipeline mechanism comprises a first steam pipeline, a second steam pipeline, a third steam pipeline, a stainless steel ferrule type elbow, a liquid pipeline and jacket type condensing equipment. Efficient heat dissipation of a high-heat-flux and complex heat source environment is achieved, the heat transfer performance and stability of the loop heat pipe system are remarkably improved, and the loop heat pipe system can be widely applied to the fields of electronic equipment heat dissipation, spacecraft thermal control, industrial thermal management and the like.

This utility model discloses a loop heat pipe cooling system for a coronagraph, including an equipment mounting plate, a heat collection plate, a main loop heat pipe evaporator, and a backup loop heat pipe evaporator. The equipment mounting plate and the heat collection plate are connected by channeled heat pipes. Several discrete heating devices are mounted on the equipment mounting plate. The outer surface of the heat collection plate has a main evaporator mounting surface and a backup evaporator mounting surface. The main loop heat pipe evaporator is mounted to the heat collection plate via the main evaporator mounting surface, and the backup loop heat pipe evaporator is mounted to the heat collection plate via the backup evaporator mounting surface. The cooling system of this utility model features a backup evaporator design, which improves the on-orbit reliability of the loop heat pipe system. Redundancy is used to address potential failure risks. The system is equipped with two loop heat pipe evaporators connected to the heat source mounting surface, meeting special requirements such as good thermal conductivity of the evaporator mounting surface, temperature uniformity, and a small temperature difference between the main and backup mounting surfaces.

The utility model discloses a drying tower exhaust air waste heat recycling system utilizing a loop heat pipe, which belongs to the technical field of energy conservation and emission reduction, and comprises an air inlet module, a steam heating module, a drying module and an air exhaust module which are sequentially connected, and a waste heat recycling and preheating module is arranged between the air inlet module and the air exhaust module. A main body of the waste heat recovery preheating module is composed of a plurality of parallel and independent loop heat pipes, the heat pipe condensation ends of the loop heat pipes are arranged in the air inlet module, and the heat pipe evaporation ends of the loop heat pipes are arranged in the air exhaust module. The loop heat pipe between the heat pipe condensation end and the heat pipe evaporation end is a steam loop and a condensation loop. According to the drying tower exhaust waste heat recycling system utilizing the loop heat pipe, fresh air is preheated through the waste heat recycling and preheating module, fuel consumption can be greatly reduced, an extra circulating pump is not needed to drive a working medium to circulate, and energy consumption can be further reduced.

The invention relates to a loop heat pipe supercooling section calculation and design method, and belongs to the technical field of spacecraft thermal control. The method comprises the following steps: 1) simplifying complex change conditions of an internal heat source and an external heat flow of a spacecraft into a high-temperature working condition and a low-temperature working condition; (2) for the loop heat pipe operating in a fixed thermal conductivity mode, calculating the length of a supercooling section in a manner that a heat dissipation surface can completely dissipate load heat to a cold space under a high-temperature working condition; (3) checking whether the gas-liquid interface has the risk of rushing out of the condenser or not under the low-temperature working condition; if the checking is passed, finishing the design; and if the checking is not passed, the risk is eliminated by reducing the volume of the liquid storage device and increasing the temperature of the liquid storage device. According to the method, the accurate design of the filling amount is realized, the structural design and the use strategy of the loop heat pipe can be guided, and the dependence on a thermal test in the design process of the loop heat pipe is reduced.

The application provides an assembly tool for a capillary core of a loop heat pipe and an assembly method thereof, and belongs to the technical field of loop heat pipes, and comprises a clamping tool, a guiding tool and a heating tool, the clamping tool comprises a conical screw and an expansion pipe, the guiding tool is internally provided with an introduction section, a guiding section and a positioning section, the heating tool comprises an outer heating ring and an inner heating ring, the inner heating ring is attached to the inside of the outer heating ring, the height of the outer heating ring is higher than that of the inner heating ring, and the height difference between the outer heating ring and the inner heating ring forms a placing groove for placing the guiding tool. The application completes interference assembly of the capillary core and the pipe shell by adopting the pipe shell thermal expansion and contraction method, clamps the capillary core by using the clamping tool, positions the capillary core and the pipe shell to the same axis by using the guiding tool, and heats the pipe shell by using the heating tool, so that the capillary core is accurately installed and efficiently assembled by using the three tools in combination.

The embodiment of the application discloses an evaporator loop heat pipe, and the evaporator comprises a capillary structure arranged between an evaporation cavity and a compensation cavity; a first guide flow channel structure is arranged in the compensation cavity, the first guide flow channel structure has a first end and a second end, the first end is communicated with a gas pipeline of the loop heat pipe, and the second end is communicated with a liquid pipeline of the loop heat pipe, so that gaseous working medium formed by evaporation of liquid working medium in the compensation cavity which absorbs heat from the evaporation cavity and enters the compensation cavity through the capillary structure flows into the gas pipeline through the first end under the action of the first guide flow channel structure.

The application discloses a loop heat pipe evaporator adopting aluminum powder sintering in the field of spaceflight, which comprises an evaporator tube shell, a capillary core, a liquid trunk, a gas channel and a liquid reservoir; the evaporator tube shell is made of 6 series aluminum alloy, the capillary core is made of aluminum powder sintering, the capillary core is directly sintered in the evaporator tube shell, and the capillary core is a porous medium; the gas channel and the liquid trunk are made through a mold without machining, the gas channel is located at the joint of the evaporator tube shell and the capillary core, and the liquid trunk is located at the center of the capillary core. The application has simple structure, simple technological process, adopts aluminum as the evaporator material, greatly reduces the weight of the heat pipe, is compatible with ammonia, can adopt ammonia as the working medium, and strengthens the heat transfer capacity of the heat pipe.

The application discloses a kind of evaporator porous capillary core maximum aperture measurement systems for loop heat pipe, including evaporator porous capillary core soaking pretreatment subsystem, evaporator porous capillary core maximum aperture measurement subsystem and background measurement control system;The measurement system improves the soaking pretreatment process of evaporator porous capillary core, utilizes program control automatic pressurization, automatic identification breakdown pressure in measurement process, and the influence of gravity and temperature is corrected, realizes the efficient, accurate measurement of evaporator porous capillary core maximum aperture for loop heat pipe.

The application provides a loop heat pipe type aircraft equipment cabin heat dissipation device combined with a phase change material, which comprises an evaporator 1, a condenser 2, a phase change material 3, a liquid storage tank 4, an air storage tank 5, a liquid pump 6, a temperature sensor 7, a liquid pipeline 8, a steam pipeline 9, an axial flow fan 10, an air bypass valve 11, a liquid bypass valve 12, a check valve 13, a controller 14 and fins 15, wherein the evaporator 1 absorbs heat generated by equipment, the condenser 2 dissipates heat, and the phase change material 3 absorbs heat shock energy generated by equipment during short-time high-power operation; the controller 14 is connected with the liquid pump 6, the temperature sensor 7, the axial flow fan 10, the air bypass valve 11 and the liquid bypass valve 12; the evaporator 1 and the phase change material 3 form a heat dissipation base, and the heat generated by equipment is absorbed through the heat absorption surface on the upper surface of the evaporator; the condenser 2 and the fins 15 form a skin radiator, and heat is dissipated to ram air entering the skin radiator.

The invention discloses a loop heat pipe for replacing liquid return of a capillary core with the Laplace pressure difference of a conical channel, and belongs to the technical field of loop heat pipes. The loop heat pipe comprises an evaporation cavity, a condenser, a steam pipe and a liquid loop, and the input end of the steam pipe is connected with the output end of the evaporation cavity; the input end of the steam pipe and the input end of the condenser are connected with the input end of the evaporation cavity through a liquid loop, a conical liquid return channel and a micro valve are additionally arranged on the liquid loop, and the conical liquid return channel is provided with a large end and a small end; the evaporation cavity is connected with the condenser through a steam pipe, the condenser is connected with the liquid collecting cavity, and the liquid collecting cavity is connected with the large end of the conical liquid return channel. According to the loop heat pipe, the contact angle theta of the lyophilic surface in the conical liquid return channel is smaller than 90 degrees, so that a liquid-gas interface generates higher curvature at the small end, Laplace pressure difference is formed, liquid is pushed from the large end to the small end to complete liquid return, a traditional capillary core structure is not needed, the problem that pores of a capillary core are prone to being blocked is solved, and the service life of the loop heat pipe is prolonged.

This invention provides a heat exchange system with variable heat absorption area. The system includes a loop heat pipe, which comprises multiple parallel straight pipes and a first bend and a second bend connecting the upper and lower ends of adjacent straight pipes. The first bend and the second bend are alternately arranged, forming a series structure between the straight pipes and the bends. The loop heat pipe includes an evaporation section, which includes a second bend and a portion of a straight pipe connected to the second bend. The system is characterized by further including a bypass pipe disposed at the upper end of the second bend, which connects to an adjacent straight pipe connected to the second bend. A first valve is disposed on the second bend, and a second valve is disposed on the bypass pipe. During operation, at least one of the first valve and the second valve is open. This invention can adjust the size of the heat exchange area involved in heat absorption and the flow rate of the fluid by opening and closing the first valve and the second valve, thereby automatically controlling the output temperature.

The invention discloses a layered composite drive phase change heat dissipation system and method, and relates to the technical field of spacecraft thermal control. The system comprises a soaking diffusion device, a loop heat pipe evaporation device, a far-end condensation radiation device and an active driving device, the uniform heat diffusion device and the loop heat pipe evaporation device form thermal coupling through an integrated common-wall structural plate, and the loop heat pipe evaporation device and the far-end condensation radiation device are connected in a sealed mode through a pipeline. A gradient capillary core is arranged in the loop heat pipe evaporation device, and the active driving device is arranged on the liquid backflow pipeline and forms a composite driving mode with the capillary core. The system is filled with an insulating phase change working medium. High heat flux density is expanded through the uniform heat diffusion device, long-distance heat carrying is achieved through capillary-active composite driving, and heat is dissipated to deep space through the expandable radiant panel. The system has the advantages of high-heat-flux soaking, long-distance heat carrying, high reliability and the like, and the long-term heat dissipation requirement of kW-level electronic device clusters of the space data center is met.

The invention discloses an enhanced thermal rod for protecting permafrost, which belongs to the technical field of permafrost protection, and comprises a gravity thermal rod unit, a loop heat pipe bundling unit and a radiation refrigeration unit, the gravity thermal rod unit is a thermal rod filled with a heat transfer working medium, and is divided into a condensation section, a heat insulation section and an evaporation section from top to bottom in sequence; the two layers are respectively positioned above the ground, on an active layer and on a permafrost layer; the loop heat pipe bundling unit comprises a plurality of loop heat pipes radially arranged around the hot rod, the loop heat pipes formed by sequentially connecting an evaporator, a gas pipeline, a condenser and a liquid pipeline are filled with nano fluid working media, the evaporator and the liquid pipeline are arranged inside the hot rod, and the condenser and the gas pipeline are arranged outside the hot rod; and the radiation refrigeration unit is coated outside the condensation section and the condenser corresponding to the condensation section. The gravity heat rod is combined with the loop heat pipe technology and the radiation refrigeration technology, the internal heat resistance of the heat rod can be reduced, the external cold energy capturing capacity is improved, and cooling protection of permafrost is achieved.