Design and test of a flat capillary pump with ceramic wick

A novel flat capillary pump was designed to solve the problem of heat leakage from evaporator accumulator in pumps. The materials used obtain porous wick and main shell were silicon nitride low-thermal conductivity titanium alloy, respectively. size resulting 82.0 mm × 53.0 16.0 mm, eight cylindrical wicks arranged inside pump. pore size, porosity, 0.5 µm, 70%, 2.7 W/(m K), Experimental results showed that loop pipe can be started quickly no obvious overheating occurs under a load range 5.0–20.0 W when angle is 0°. time required start remarkably increased temperature increment evidently 5 increased. However, 20 W, starting characteristics improved. heat-transfer ability pipe, equilibrium accumulator, thermal resistance subsequently tested, revealed transfer flux limits are 400.0 26.3 W/cm2, changed with sink load, this consistent typical running characteristic pipe. minimum tested 0.018°C/W. Finally, back compensation chamber estimated energy balance chamber.