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Description
It is important to understand the thermal hydraulic behavior of liquid hydrogen (LH2) inside the tank under static and dynamic conditions for developing an LH2 tank on a car and a boat. As fundamental studies on pressure accumulation inside an LH2 tank, the temperature, pressure, and level of LH2 has been measured under a static condition in terms of initial filling ratio dependence, using a 20 L tank. It is found that the pressure rising rate shows relatively high value just after beginning of pressure accumulation and the accumulation time indicates relatively short value in the case of high filling ratio. Experimental results of the time variation of pressure are compared with calculation results based on homogeneous self-pressurization condition.
