Abstract
A two-phase fluid loop is one kind of thermal control system for a satellite. This loop has an advantage in large amount of heat transportation. The accumulator is one of control elements for two-phase fluid loop. The accumulator is control the loop by working fluid charged or discharged. A thermal accumulator is drive by heating or cooling of accumulator body. Amount of discharge liquid flow from accumulator was measured with an accumulator test bed. This test bed is consisted with test accumulator and a tank that is a substitute for the two-phase fluid loop. Discharge flow rate was varied by heating position.
