Abstract
A model was proposed to estimate temperature change during filling or discharging hydrogen into a tank by authors. It verifies to be a good agree-ment between the measured and estimated temperatures of hydrogen. Seven non-dimensional parameters, which govern the temperature change, are derived from the governing equations and are constituted from 14 parameters concerned with this process. One of them is a controlled one related to the pressure change or mass flow rate. Some case studies have been done based on a corresponding filling test using actual tanks. The effect of these parameters on the temperature characteristics has been clarified for the actual vessel during charging hydrogen up to 35MPa and 70MPa.
