| 摘要 |
<p>A shell tube heat exchanger comprises: a shell which includes a refrigerant inlet, a refrigerant outlet, a water inlet, and a water outlet; a tube sheet which divides the inside of the shell into a water flow path and a refrigerant flow path, and includes a through-hole unit; and a tube which is supported by the tube sheet, and communicates with the water flow path so that water can pass. The tube comprises: a copper inner tube where water passes; an aluminum outer tube which surrounds at least part of the outer circumference of the inner tube, and is in contact with a refrigerant in the refrigerant flow path; and a copper packing which is combined with the inner tube and adheres to the through-hole unit. Therefore, the shell tube heat exchanger can minimize material costs and can prevent corrosion of the aluminum outer tube due to water.</p> |
