Effect of Ventilation Pressure and Leakage Location on Leakage of Hydrogen Small Holes in Fuel Cell Vehicles

Abstract:

A theoretical analysis of hydrogen leakage through small holes was carried out， and the simulation of hydrogen leakage through small holes was conducted with Simulink and Fluent respectively. It is shown that the temperature has no significant effect on the hydrogen leakage， while the hydrogen pressure and the size of hydrogen storage space have a greater effect on hydrogen leakage process. Active ventilation is helpful to reduce hydrogen leakage inside the car. In addition， the hydrogen leakage in the confined space has the characteristics of leakage point accumulation， and the hydrogen accumulates at high places because of gravity.