A multi-flexible evaporator loop heat pipe temperature control system and method for a scientific load cabinet of a space station

Abstract

The invention discloses a multi-flexible evaporator loop heat pipe temperature control system for a space station scientific load cabinet. The multi-flexible evaporator loop heat pipe temperature control system for the space station scientific load cabinet comprises flexible evaporators, a tubular condenser, a liquid pipeline, a vapour pipeline and liquid reservoirs, wherein the liquid pipeline connects the evaporators and the condenser, the vapour pipeline connects the evaporators and the condenser, and the liquid reservoirs store working substance. Each flexible evaporator comprises a flexible porous capillary core, a paraffin capsule and a sintered porous capillary core, wherein the flexible porous capillary core is made of stainless steel, the paraffin capsule is located in the same channel area with the flexible porous capillary core, and the sintered porous capillary core is made of carbonyl nickel powder. According to the multi-flexible evaporator loop heat pipe temperature control system for the space station scientific load cabinet, capillary suction force of the capillary core is utilized to enable the working substance to be circulated between the evaporators and the condenser to take away heat, the characteristic that the volume of the paraffin capsules arranged in the evaporators changes due to phase change after the temperature sensing is utilized, the flexible capillary core is extruded, and a flow rate of the working substance is changed, so that the purpose of self-adaptive temperature control is achieved. The multi-flexible evaporator loop heat pipe temperature control system for the space station scientific load cabinet does not need an external drive pump, saves energy, has reliable performance and high self-adaptive temperature control capability, and is suitable for the temperature control requirements of the space station scientific load cabinet.

Description

technical field [0001] The invention relates to a multi-flexible evaporator loop heat pipe temperature control system and method for a scientific load cabinet of a space station. Background technique [0002] With the development of aerospace technology, the space station has become an eye-catching frontier of scientific research and exploration. At present, humans have carried out hundreds of different scientific researches on the space station, and have made significant research progress in medicine, environment, biology and space exploration. With the continuous deepening of space science experimental research and the continuous improvement of the performance of electronic devices With the continuous development of miniaturization and light weight, the problem of heat dissipation of space station scientific loads is becoming more and more prominent. Therefore, the temperature control components need to be compact and light in structure, flexible in layout, and high in re...

AI Technical Summary

Problems solved by technology

[0005] 2. Since the generation of steam in the evaporator requires a certain degree of superheat and vaporization core, and the more concave-convex areas in the porous area are very conducive to the formation of the vaporization core, and the growth of bubbles in the front part of the evaporation zone will hinder the liquid from going to the evaporation interface. normal supply, resulting in failure to start the loop heat pipe system;

[0006] 3. When the heat load is large, due to the continuous evaporation, the flow velocity of the steam will increase along the steam channel and the steam velocity at the outlet of the evaporator will reach the maximum value. Once it exceeds the speed of sound, it will cause blockage and reduce heat transfer. Efficiency can even cause the system to fail;

[0007] 4. When the heat load changes, since it takes a certain amount of time for the liquid to replenish from the evaporation of the liquid to the increase of the capillary suction force, the temperature change of the loop heat pipe system lags seriously behind the change of the heat load during the operation of the loop heat pipe system.

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