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一、前言由于工农业的迅速发展,使电力的需要量大大增加,从而导致水源日益紧张。由于缺乏水源使大容量火电厂的厂址选择越来越困难,有时不得不限制电厂的建设规模。另外,为适应矿口和严重缺水地区建厂的需要也要求电厂汽轮机的排汽采用空气冷凝方式,因而电站空冷已提到议事日程上来。为此我们自78～80年在西安交大热工实验室先后进行了五种不同翅片管型的空冷器结构型式(L型绕片管,铝片
I. INTRODUCTION Due to the rapid development of agriculture and industry, the demand for electricity has greatly increased, resulting in an increasingly tight water supply. Due to the lack of water supply, the site selection of large-capacity thermal power plants is becoming more and more difficult, and sometimes the power plant construction scale has to be limited. In addition, in order to meet the needs of mine construction in the mine mouth and severe water shortage areas, the exhaust of steam turbines of power plants is also required to be air-condensed. Therefore, air-cooling of power plants has been put on the agenda. To this end, we have carried out five different types of fin-tube air-coolers (L-type round tube, aluminum sheet