Abstract
During rapidly filling of hydrogen gas at high pressure into a FCV tank, temperature of hydrogen gas in the tank suddenly rise resulting into a rise in the tank wall. The regulation of safety requires the temperature of hydrogen gas lower than 85℃. Filling system using precooled hydrogen is proposed to reduce the temperature rise of hydrogen gas in the tank. For the practical design of the precooling equipments, a simplified thermodynamic analysis has been done for operation of filling hydrogen gas by considering heat transfer in the equipments. The calculated conditions of hydrogen gas at outlet agreed with the measured ones.
