Abstract
Time transients of pressure and mass in a liquid nitrogen tank with and without fluid depletion are experimentally examined. The amount of gas generation was calculated under a thermal equilibrium assumption. The gas generation rate is found to be constant on a stage of without fluid depletion. The gas generation rate decrease with increase of liquid mass in the tank, which tendency is different from the previous finding. In order to understand this difference, it is necessary to consider a subcooling of the liquid phase. In an early stage of fluid depletion, the gas generation rate indicates a large value which is around ten times of that obtained in the stage of without fluid depletion.
