A controllable plate type pulsating heat pipe heat transfer system with an external oscillating source

Abstract

The invention discloses a controllable plate type pulsating heat pipe heat transfer system with an external oscillation source. The working fluid distributed alternately with the liquid plug state also includes an insulating sheet arranged between the first cover plate and the second cover plate; a power source connected to the first cover plate and the second cover plate to generate a pulse electric field; used to generate The magnetic poles of the magnetic field parallel to the first cover plate and the second cover plate; the inner liquid metal arranged in the working medium channel. The plate-type pulsating heat pipe heat transfer system has a simple structure, and can control the pulsation frequency and amplitude of the working medium inside the plate-type pulsating heat pipe, so that the heat transfer performance of the plate-type pulsating heat pipe can be controlled and enhanced, and the starting power of the tube-type pulsating heat pipe can be reduced. The advantage of realizing the start-up control of the plate-type pulsating heat pipe is realized.

Description

technical field [0001] The invention relates to the technical field of pulsating heat pipes, in particular to a controllable plate-type pulsating heat pipe heat transfer system with an external oscillation source. Background technique [0002] As the most novel and unique member of the heat pipe family, the plate-type pulsating heat pipe is a two-phase flow passive heat transfer element, which is mainly composed of a heating section, an adiabatic section and a condensing section. Its working principle is to fill the plate-type pulsating heat pipe pumped to a certain degree of vacuum with a certain percentage of working fluid as required and then seal it. Due to the small inner diameter of the tube, under the influence of surface tension, the working fluid forms inside it. In the state where vapor plugs and liquid plugs are alternately and randomly distributed, the working fluid is heated and expands to generate bubbles at the heating end, and then the bubbles grow up, and th...

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Problems solved by technology

[0003] The normal operation of pulsating heat pipes in the traditional sense depends on the thermal excitation at the evaporating end. The internal working medium is heated and vaporized, which causes a pressure difference between the cold and hot ends of the tube and the pressure imbalance between adjacent tubes to maintain pulsating flow and phase change heat transfer. The pulsation frequency of the working fluid is uncontrollable. Due to the pulsation limitation of the pulsating heat pipe, the difficulty in starting it, and its unstable operation under low power conditions limit the application of the plate pulsating heat pipe in the low power input state.

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