INTERMEDIATE FLUID VAPORIZER

摘要

The intermediate fluid vaporizer (10) is provided with: an intermediate fluid evaporator (E1), which has heat transfer tubes (20) through which seawater flows and which evaporate at least a portion of a liquid intermediate medium (M) by thermal exchange between the seawater inside the heat transfer tubes (20) and the intermediate medium (M) outside said heat transfer tubes (20); and an LNG evaporator (E2), which has a heat transfer tube (40) through which LNG flows and which vaporizes the LNG inside the heat transfer tube (40) by condensing the intermediate medium (M), which has been evaporated in the intermediate medium evaporator (E1), outside the heat transfer tube (40). The heat transfer tubes (20) of the intermediate fluid evaporator (E1) are made of titanium or a titanium alloy. On the outer circumferential surface of the heat transfer tubes (20), grooves, which have cavitary portions that communicate with the outside through gaps in the outer surface, are formed.