| 摘要 |
PROBLEM TO BE SOLVED: To provide a filling system for liquefied fuel gas, which enables an operator to check whether or not an excess flow valve for preventing the liquefied fuel gas from flowing out at a specified flow rate or above is operated, during an operation, and a filling method for the liquefied fuel gas.SOLUTION: A filling system for liquefied fuel gas includes a CU (control unit) 41 (56) that determines that an excess flow valve 17 blocks a circulation passage 12, makes an excess flow valve 17 block the circulation passage 12, and turns on an alarm lamp 42 (57), when differential pressure &Dgr;P between filling destination pressure Pa of a gaseous phase Ga of DME (dimethyl ether) in a main tank 4 and filling source pressure Pb (Ps) of a gaseous phase Gb (Gs) of DME in a sub-tank 5 (reservoir 31) is equal to or higher than a predetermined differential pressure determination value Pn. |
