LIQUEFIED FUEL GAS VAPORIZATION SYSTEM AND TEMPERATURE CONTROL METHOD FOR SAME

This liquefied fuel gas vaporization system (X1) for vaporizing a liquefied fuel gas for the purpose of supplying the liquefied fuel gas to a combustion device (5) is provided with: a vaporizer (2) which vaporizes a liquefied fuel gas by heating the liquefied fuel gas by means of a liquid heat medium; a heat recovery unit (4) which recovers exhaust heat of the combustion device (5) by means of the liquid heat medium; heat medium circulation lines (62, 63) for circulating the liquid heat medium between the heat recovery unit (4) and the vaporizer (2); a mixing unit (71) which is provided in the heat medium circulation lines (62, 63) so as to mix the liquid heat medium which has passed through the heat recovery unit (4) and the liquid heat medium which is discharged from the vaporizer (2) and has not passed through the heat recovery unit (4); and flow rate control units (624, 73) which control the flow rate of the liquid heat medium to be supplied to the vaporizer (2).