Abstract: A test rig of no-vent fills for cryogen was set up to study the feasibility and influencing factors of no-vent fills. Five main parameters, including incoming liquid temperature, inflow rate, initial wall temperature, outlet height and filling configurations are changed to find out their effects on the performance of no-vent fills. It is experimentally shown that the pressure in the receiver tanks will increase if either the incoming liquid temperature or the initial wall temperature increases. Inflow rate impacts mostly on the filling time. The filling outlets’ height and configuration make combined influence on the performance of novent fills.

Key words: no-vent fills, incoming liquid temperature, inflow rate, initial wall temperature, outlet height, filling configuration