本文介绍一种带翅片管子的套管式冷却器,翅片管是用板翅式换热器的翅片同裸管钎接而成。用它做空气压缩机油冷却器具有结构简单、牢固可靠、重量轻、清洗装拆和维修方便以及价格低廉等优点。本文还对其高效能传热进行了理论分析。推导并引入了一个“当量”放热系数α_d。借助α_d,可以判断冷却器设计是否合理,从而也为最优化设计提供了方向。 This article describes a finned tube casing cooler, finned tube is a plate-fin heat exchanger fin with bare tube brazed together. Use it as air compressor oil cooler has the advantages of simple structure, solid and reliable, light weight, convenient cleaning and disassembly and maintenance as well as low price. The paper also analyzes its high efficiency heat transfer. Derived and introduced an “equivalent” exothermic coefficient α_d. With α_d, you can determine if the cooler design is reasonable, which also provides the direction for optimal design.