Effect of heat exchanger design on seasonal performance of heat pump systems

被引：29
作者：
Ishaque, Shehryar [1 ,2 ]
Siddiqui, Md Irfanul Haque [3 ]
Kim, Man-Hoe [1 ,2 ]
机构：
[1] Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea
[2] Kyungpook Natl Univ, IEDT, Daegu 41566, South Korea
[3] King Saud Univ, Dept Mech Engn, Riyadh, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2020年 / 151卷
关键词：
Heat exchanger design; CFD; Face velocity profile; Heat pump; Seasonal performance; FLOW MALDISTRIBUTION; AIR-FLOW; HYDRAULIC PERFORMANCE; TUBE; IMPROVEMENT; OPTIMIZATION; ARRANGEMENT; CONDENSERS; MODEL; ALGORITHM;
D O I：
10.1016/j.ijheatmasstransfer.2020.119404
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents the effect of heat exchanger design on heat pump performance based on partial load operating conditions. 3-D numerical analysis was conducted to calculate face velocity profiles for each outdoor heat exchanger design (rectangular, cylindrical, and trapezoidal) in 10 different operating conditions. Heat exchanger circuits were modified considering heat exchanger face velocity distributions, and seasonal heat pump performances were calculated with modified heat exchanger design. The maximum seasonal performance enhancement of 7.07% was achieved with a modified heat exchanger design. Air-side flow maldistribution could affect significantly refrigerant path design and heat exchanger performance as well as system performance. The analysis results also revealed that smaller refrigerant circuits at the upper part of the heat exchanger interacting with higher air velocity could further enhance the annual system performance. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：12
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