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一、引言由于环境污染及冷却水源问题的日益严重,近十几年来,利用环境空气冷却的冷却器得到了很大的发展,特别是在化工及石油工业中,空冷器正在越来越广泛地用来冷却各种液体。上海江湾化工机修厂为适应这一发展的需要,生产了各种空冷设备,L型铝绕制圈片管就是其中采用的散热元件。需要被冷却的液体从管内流过,空气则从管外横向流过,通过铝圈片将液体的热量传给空气。为了不断改善圈片管气侧的传热性能,很
I. INTRODUCTION Due to the increasingly serious environmental pollution and the problem of cooling water source, the cooler using ambient air cooling has been greatly developed over the past decade. Especially in the chemical and petroleum industries, air coolers are increasingly widely used Used to cool a variety of liquids. Shanghai Jiangwan Chemical Machinery Factory to meet the needs of this development, production of a variety of air-cooled equipment, L-shaped aluminum tube around the ring is one of the cooling elements used. The liquid to be cooled flows through the tube, the air flows laterally outside the tube, and the liquid heat is transferred to the air through the aluminum ring. In order to continuously improve the heat transfer performance of the gas tube side of the loop, very