| 摘要 |
PURPOSE:To facilitate restoration of a corrosion part and to enhance maintenace by connecting a concentrator with high corrosion resistance and an arranged pipe comprising a usual material through an easily detachable short pipe or a spacer. CONSTITUTION:A heater 12 and an evaporator 54 which are concentrators made of a high corrosion resistant material and arranged pipes 26,28,70 comprising usual materials are connected through short pipes 24 or spacers. Then, corrosion of the a forementioned usual material is concentrated in the short pipe 24 or the spacer near to a connecting part with the high corrosion resistant material. Therefore, repairing is enabled by only replacing the corroded short pipe or the spacer. Further, by using the spacer comprising a non-conductive material and shutting off local current generated during corrosion, corrosion can be prevented. |
