LOW TEMPERATURE LIQUEFIED GAS VAPORIZER, COOLING SYSTEM, AND ICE ACCRETION SUPPRESSING METHOD IN VAPORIZER

摘要

Even when water does not flow in the vicinity of the outer surface of the heat transfer tube, freezing of water can be suppressed. The vaporizer 10 has an inner space IS, is disposed in the shell 12 into which water is introduced into the inner space IS, and is disposed in the inner space IS, into which liquefied natural gas is introduced, and is liquefied by water. A heat transfer tube 14 for heating natural gas and a heat transfer suppressing member 30 made of a material having a lower thermal conductivity than water are provided. The heat transfer suppression member 30 covers the heat transfer tube 14 in a part of the heat transfer tube including the introduction site of liquefied natural gas.