Tank state estimation method and tank state estimation program

摘要

It is a tank state estimation method which estimates the state in the tank at a predetermined time on the route of the LNG carrier whose cargo is LNG stored in the tank. A first step of acquiring information related to specifications of the tank; a second step of acquiring information related to a state in the tank at a start point of a target section on the navigation route; a weather forecast value of the section; A third step of acquiring information of liquid fluctuation prediction value of LNG in the tank in the section, which is obtained based on the information of the weather forecast value, and the information acquired in the first to third steps The fourth step of calculating the state in the tank at the end point of the section, assuming that the heat input to the tank in the section is used to vaporize the LNG in the tank by heat transfer calculation based on thermodynamics. And.