摘要
改善汽轮发电机冷却技术是提高汽轮发电机单机容量的最有效、最现实途径。气体冷却器是汽轮发电机的重要设备之一。其传热与阻力性能将直接影响汽轮发电机的运行经济性和可靠性。为实现汽轮发电机气体冷却器的优化设计,对管束不同横向节距的波纹翅片型穿片式冷却器的换热和阻力性能进行了试验研究,分析了管束横向节距对气体冷却器换热和阻力性能的影响规律。研究成果对汽轮发电机气体冷却器的结构与性能优化具有重要的指导作用。
Improvement of the cooling technology is the most effective and practical way of increasing the unit capacity of a turbo-generator. The gas cooler is one of the important components of a turbo-generator, and its heat transfer and friction characteristics will affect the economy and reliability of turbo-generator operation. For the purpose of optimizing the gas cooler design, two plain fin-and-tube heat exchangers with different tube-bank transverse pitches were experimentally studied. Based on the experimental studies, air-side heat transfer and friction characteristics of the tested heat exchangers were investigated. Moreover, the effects of transverse pitch of tube banks on heat transfer and friction characteristics were analyzed. The research results have important directive function for the optimization of the structure and performance of the gas cooler for turbo-generators.
出处
《能源研究与信息》
2012年第2期86-91,共6页
Energy Research and Information
关键词
汽轮发电机
气体冷却器
换热
阻力
横向节距
turbo-generator
gas cooler
heat transfer
friction
transverse pitch of tube banks
作者简介
顾守绿（1965-），男（汉），教授级高级工程师，gushl@shanghai—electric．com
