Thermal Study on LNG Cargo Tank

The LNG (Liquefied Natural Gas) cargo tank is a key component in the maritime transport of -163℃ LNG. The cryo-insulation performance of cargo tank directly affects the security of LNG transport greatly. Based on a 147000m3 LNG cargo tank, a structural type of the LNG cargo tank is certain, which includes its materials and parameters. With the safety requirements of cryopreservation of -163℃ LNG, the temperature fields and the thermal stress distribution of LNG cargo tank with full load are simulated by a 3d mathematic model by finite element software. Lastly, a cooling scheme of LNG cargo tank is completed according to its thermal performance. The cooling method has some practical meaning to some engineering.