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武钢○七工程的热轧厂、冷轧厂和硅钢厂传动轧机的大中型电机冷却,西德和日本均采用椭圆管矩形翅片空气冷却器。这种空气冷却器始创于西德,后在欧洲得到广泛的应用。这种冷却器不但冷却效率高,而且特别适用于缺乏低温水地区使用。如我国采用的圆管翅片空气冷却器,要求水温一般不超过25℃,理论上水气温差在7～10℃,实际使用大多超过10℃。所以我国南方地区的钢铁厂当采用这种冷却器时就不得不设计冷冻站,供低于25℃的冷却水。“○七”工程采用的椭圆管空气冷却
The large and medium-sized motors of the rolling mills of hot rolling mills, cold rolling mills and silicon steel mills of the WISCO ○ 7 project have been cooled, and the elliptical tube rectangular fin air coolers have been used in West Germany and Japan. This air cooler was founded in West Germany and has been widely used in Europe. This cooler not only has high cooling efficiency, but is also particularly suitable for use in areas with low temperature water. Such as China’s use of round tube fin air cooler, the required water temperature generally does not exceed 25 °C, in theory, water temperature difference in the 7 ~ 10 °C, the actual use of more than 10 °C. Therefore, when the steel plant in the southern region of China uses this cooler, it has to design a freezing station for cooling water below 25°C. Elliptical Tube Air Cooling for “○ 7” Project