| 摘要 |
PURPOSE:To execute simply even a system control with easy LNG supplying control by arranging, at an outside of a LNG tank, a heating means which compulsorily causes LNG in its inside to evaporate. CONSTITUTION:In a case wherein a boiled off gas is supplied to a boiler 5 which is a main machinery, the boiled off gas is discharged from a compressor 4, and is supplied to the boiler 5. If a gas quantity necessary for the boiler 5, becomes large, a gas pressure in a tank becomes low, and therefore, this is detected by a gas pressure detecting means 20, and a control device 21, based on its signal executes a control to make a divergence of a control valve 15 small. Then, in a coolant circulation device 10, most of a coolant discharged from a pump 11 passes through a first heat exchanger 12 of a coolant circulation circuit 13, here is heated and flows into a second heat exchanger 9 (a heating device), heats LNG in a LNG tank 2 and forcedly generates the boiled off gas. Accordingly, a supply control of a gas becomes easy. |
