Non-Isothermal Sloshing in Marine Liquefied Natural Gas Fuel Tanks

摘要

Liquefied Natural Gas (LNG) has proven to be a promising alternativefuel. However, storing and handling cryogenic liquidsonboard ships offer some operational challenges. This paperpresents investigations of the pressure and temperature change ina cryogenic pressure vessel. The tank is of similar shape as a marineliquefied natural gas (LNG) fuel tank, but the test medium isliquefied nitrogen (LIN). By using amotion platform, the sloshingenhanced pressure change in the tank is studied. Important factorsare the type of sloshing regime and the degree of subcooled liquid.To investigate the sloshing regimes, a tank with a transparentglass is also tested using water and air. The preliminary resultsfrom the experiments confirm that sloshing, as well as the lowertemperature of the liquid relative to the saturation temperature,has a significant influence on the pressure.