5mm管径铜管换热器应用的冷凝性能研究

近年来，随着小管径换热器研究的深入和推广，目前各空调厂家已逐步应用推广。小管径换热器特点在于提高换热性能和节约产品材料成本。同时国内销售的空调器已由R22定频转向R410A变频空调器，小管径换热器随R410A冷媒的替代其强化传热影响更加显著，具备良好的应用前景。综合5mm管径换热器在空调系统中应用的性能数据比较，其冷凝性能优于大管径换热器，满足制冷量和能效的条件下，尤其空调制热量的提高非常显著。

Condense property applications of 5mm diameter tube heat exchanger

With more research and promotion of small diameter tubes heat exchanger , room air conditioners ’ manu-facturers has been gradually applied to promotion in recent years.The heat exchanger miniaturization in room air conditioner has many advantages , such as decreasing heat exchanger cost , and improving heat exchange capacity and efficiency.For the promoting action of R410A substituting for R22, small diameter tubes heat exchanger en-hance heat transfer significantly.It has a good prospect.From the performance datas , its condensation performance is better than the larger diameter tubes heat exchanger.With the same cooling capacity and efficiency , 5mm tube heat exchanger improves the heating capacity significantly.