Heat pipe device capable of controlling heat transfer coefficient

Abstract

The invention belongs to the technical field of heat pipes, and particularly relates to a heat pipe device capable of controlling a heat transfer coefficient. Comprising a straight-barrel-shaped gravity type heat pipe (1), a liquid evaporation section (2) is arranged in the bottom end of the gravity type heat pipe (1), a gaseous condensation section (3) is arranged on the liquid evaporation section (2), the top end of the gravity type heat pipe (1) is communicated with a gas control unit, and the gas control unit can input non-condensable gas (4) into the top end of the gravity type heat pipe (1). Or the non-condensable gas (4) is pumped out of the top end of the gravity type heat pipe (1), and resetting of the gravity type heat pipe (1) is achieved. The actual condensation area of the gravity type heat pipe (1) can be changed, the purpose of adjusting the overall heat transfer coefficient of the gravity type heat pipe (1) is achieved, rapid passive opening of the gravity type heat pipe (1) can be achieved, the requirement for the leakage rate of the structure is lowered, the maintainability of the gravity type heat pipe (1) is improved, and the service life of the gravity type heat pipe (1) is prolonged.

Description

technical field [0001] The invention belongs to the technical field of heat pipes, and in particular relates to a heat pipe device capable of controlling heat transfer coefficient. Background technique [0002] When the heat pipe is used to exchange heat between hot and cold fluids, if there is no adjustment device, the phase change cycle can only be automatically started according to the temperature difference of the fluid, and the heat transfer coefficient is also in an uncontrollable state after startup. [0003] Under some conditions of use, the heat pipe needs to be closed under normal working conditions and only turned on under certain conditions; under other conditions of use, the heat transfer coefficient of the heat pipe needs to be adjustable after startup. At present, most heat pipes do not have the ability to actively adjust . [0004] For the closed heat pipe formed at one time, in order to maintain the vacuum degree for a long time, the sealing performance is ...

AI Technical Summary

Problems solved by technology

[0005] For most heat pipes, the cladding and working fluid will slowly react to produce non-condensable gas during long-term use, resulting in the decline and loss of heat exchange capacity. If the non-condensable gas cannot be removed in time, the service life of the heat pipe will be affected

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