基于房间空调器全年性能系数的室外机翅片设计  

Fin Design for Outdoor Unit based on Annual Performance Factor of Room Air Conditioner

作　　者：任滔[1] 吴国明[1] 丁国良[1] 郑永新[2] 高屹峰[2] 宋吉[2] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]国际铜业协会(中国),上海200020

出　　处：《制冷技术》2016年第6期1-4,共4页Chinese Journal of Refrigeration Technology

摘　　要：为了提高房间空调器的全年性能系数(APF),室外机翅片在结霜工况和非结霜工况下的性能均需要提高,传统的开缝翅片只适用于非结霜工况的传热强化。本文提出一种采用镂空的强化结构,能同时强化结霜工况下和非结霜工况下翅片的传热性能。本文通过单片翅片的排水性实验验证镂空区域和镂空方向,并通过CFD优化镂空位置和镂空长度、宽度和间距。排水实验表明,竖直方向镂空结构的排水性最好。本文将新型镂空翅片与热泵型空调室外机中使用最广泛的波纹翅片进行比较。在非结霜工况下,优化后的镂空翅片的换热量比波纹翅片高7.5%;在结霜工况下,优化后的镂空翅片的换热量比波纹翅片高3.4%。To achieve high performance of annual performance factor （ APF） of room air conditioner, it requires high heat transfer performance of outdoor unit fin under both frost and non-frost conditions, but traditional slit and louver fins only work well under non-frost conditions. A perforated fin to enhance heat transfer under both frost and non-frost working conditions was presented. In this paper, a drainage experiment for single piece of fin was carried out to figure out the best perforated zone and direction firstly; and then a CFD based optimization was processed to obtain perforated position, perforated length, width and pitch. The drainage experiment shows that the short vertical rectangle perforated multiple-hole has best performance. The designed fin was compared with the wavy fin, which is the most widely used in outdoor unit of heat pump air conditioner. The simulations result shows that the capacity of perforated fin is 7.5% higher than that of wavy fin under non-frosting condition and 3.4% higher than that of wavy fin under frosting condition.

关 键 词：空调室外机 镂空翅片 强化传热 结霜 

分 类 号：TB657.2[一般工业技术—制冷工程]