翅片管式蒸发器结构对结霜特性影响的研究

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

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 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 finned - tube 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.