关键词: 小管径, 翅片管蒸发器, 优化设计方法, 空调器

Abstract: The principle of designing fin-and-tube evaporator with small tubes is proposed in this study.The principle includes designing of fin configuration and designing of refrigerant circuits.In the designing principle,the suitable fin configuration is designed by computational fluid dynamic-based method,and the refrigerant circuits are designed by simulation-based method.To verify the designing results,experiments on air conditioner unit are carried out.The experimental results confirm the designing principle,and indicate that the optimal air conditioner with small diameter tubes has good performance.

Key words: small diameter tube, fin-and-tube evaporator, designing principle, air conditioner