翅片管式蒸发器结构对结霜特性影响的研究

理论研究了翅片管式蒸发器不同的结构参数,如管排数、翅片间距对风冷热泵室外侧蒸发器结霜特性的影响,获得了蒸发器结构参数对蒸发器结霜厚度和空气侧压降的变化规律。研究发现蒸发器结构参数对蒸发器结霜有很大的影响。计算结果和实验测试的结果吻合较好,研究结论为翅片管式蒸发器除霜以及优化设计提供了可靠的依据。

The study on the effect of finned-tube evaporator configuration on frost

The effects of the various configuration parameters of finned-tube evaporator,such as the number of row,fin space on the frosting performance of evaporator of air-cooled heat pump were theoretically investigated.The varied correlations between evaporator configuration parameters and the frost thickness,pressure drop have been obtained.It is found that the evaporator configuration parameters have a great influence on the frosting of finnedtube evaporator.The computing results have good agreement with those from experiment,which indicates the liability of the model used in this paper.The results provide a reliable proof for defrosting and the optimum design of finned-tube evaporator.