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一、导言换热器是化工、轻工、食品、制冷、石油、动力、电站及核能等许多工业部门广泛采用的一种单元设备,其性能的优劣将关系到热能是否能够充分利用。尤其是当前世界能源紧张,低位能的余热利用以及新能源的开发,对传热强化技术要求愈来愈高。为此,现今国内外对传热强化技术这一领域已予以充分的注意和重视,取得了很大的进展。强化传热技术的方法很多,Bergles 和 Webb 定义了13种传热强化技术,包括采
I. INTRODUCTION Heat exchangers are a type of unit equipment widely used in many industrial sectors such as chemical industry, light industry, food, refrigeration, oil, power, power station and nuclear energy. The performance of the heat exchanger will depend on whether the heat can be fully utilized. In particular, the current world energy shortage, waste heat utilization at low levels and the development of new energy sources are increasingly demanding heat transfer enhancement technologies. Therefore, at home and abroad, sufficient attention and attention has been paid to the field of heat transfer enhancement technology, and great progress has been made. There are many ways to enhance heat transfer technology. Bergles and Webb have defined 13 heat transfer enhancement technologies, including mining