HEAT EXCHANGE DEVICE

PROBLEM TO BE SOLVED: To prevent corrosion of a heat exchanger tube in a heat exchange device having the heat exchanger tube immersed in a water tank.SOLUTION: A heat exchange device (a submerged combustion type vaporization device 1) includes: sparger pipes 15 immersed in a water tank 11; a heat exchanger 32 which is configured to increase a temperature of a fluid flowing in heat exchanger tubes 31 by water being agitated and heated by air bubbles jetted from the sparger pipes; and support members 4 which are configured to support the heat exchanger tubes. The support member 4 has support holes 41 through which the heat exchanger tubes penetrate. The support hole is configured so that its inner peripheral surface makes point contact or line contact with an outer peripheral surface of each heat exchanger tube at one or multiple points.SELECTED DRAWING: Figure 7 【課題】水槽内に浸漬した伝熱管を有する熱交換装置において、伝熱管の腐食を防止する。【解決手段】熱交換装置（水中燃焼式気化装置１）は、水槽１１内に浸漬されたスパージパイプ１５と、スパージパイプから噴出された気泡による水の攪拌と加熱により、伝熱管３１の内部を流れる流体を昇温するように構成された熱交換器３２と、伝熱管を支持するように構成された支持部材４と、を備える。支持部材４は、伝熱管が貫通する支持孔４１を有し、支持孔は、その内周面と、伝熱管の外周面とが、１つ又は複数の、点接触又は線接触をするように構成されている。【選択図】図７