The Liquid Bridge Heat Switch Design With Considering the Pressure Behavior to Regulate the Thermal Resistance for the Temperature Control

Abstract

Various types of heat switch have been suggested as the promising solution of thermal management in the extremely low temperature condition. Recently, the heat switch based on the liquid for the room temperature condition has been investigated to control the thermal resistance of the electronic devices. The presented heat switch was composed of several micro channels. The key technology of the heat switch operation for room temperature is the fluid control. The existing studied indicates that the flow regulation was achieved by simple channel geometry design based on the burst pressure theory. In this research, the design of the liquid bridge heat switch was presented and the pressure characterization of the designed switch was carried out. The supplying liquid generates the liquid bridge between two plates. The thermal resistance between two plates depends on the liquid bridge diameter and height. The liquid bridge size control is achieved based on the pressure characterization.