Heat transfer performance variations of condensers due to non-uniform air velocity distributions

被引：13
|
作者：
Lee, Won-Jong [1 ]
Jeong, Ji Hwan [1 ]
机构：
[1] Pusan Natl Univ, Sch Mech Engn, Busan 609735, South Korea
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2016年 / 69卷
基金：
新加坡国家研究基金会;
关键词：
Air-source heat pump; Condenser; Non-uniform distribution; Heat exchanger; Air flow; FLOW MALDISTRIBUTION; SINGLE-PHASE; LOUVERED FIN; EXCHANGER; EVAPORATOR; SYSTEM; PUMP;
D O I：
10.1016/j.ijrefrig.2016.05.009
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The heat transfer performance variations of condensers that are caused by non-uniform distributions of air flows are investigated using a numerical simulation method. A heat exchanger designed for the outdoor unit of a heat pump system is selected and represented using a numerical model. A non-uniform profile of the air velocity is constructed through measuring the air velocity at various locations on the outdoor unit. Numerical analyses are conducted for various refrigerant circuits and air flow conditions. The results demonstrate that the heat transfer capacity is reduced depending on the air flow rate and the refrigerant circuit configuration. It is also demonstrated that the capacity reduction rate is increased as the average air velocity decreases. (C) 2016 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：85 / 95
页数：11
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