低温工况下冷风机结霜性能研究

The study on air-cooler′s frosting performance in low temperature conditions

文中以冷风机为研究对象,首先对低温工况下冷风机的结霜性能进行理论分析,并建立数学模型;其次通过实验,分析了结霜对翅片管效率、空气侧平均换热系数和空气侧压降的影响。结果证明:数值计算的结果和实验测试结果基本吻合,从而证明了数学模型的正确性与可靠性。

In this paper, an air- cooler is studied. The theoretical analyst study is the frosting performance, and mathematics mode is built to study the influences of the frosting period of fin - tube efficiency, the average heat transfer coefficient of air side and air - side pressure falling in low temperature conditions. The result of numerical calculation accords with the experimental test, and the results prove the the correctness and reliability of the mathematical model.