A study on the performance enhancement of heat pump using electric heater under the frosting condition: Heat pump under frosting condition

被引：79

作者：

Kwak, Kyungmin ^{[1
]}

Bai, Cheolho ^{[1
]}

机构：

[1] Yeungnam Univ, Dept Mech Engn, Gyongsan 712749, South Korea

来源：

APPLIED THERMAL ENGINEERING | 2010年 / 30卷 / 6-7期

关键词：

Heat pump; Defrosting; Heat capacity; COP; Electric heater; AIR; DEFROST; EVAPORATOR;

D O I：

10.1016/j.applthermaleng.2009.10.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The purpose of the present study is to enhance the heating capacity and increase COP under the frosting condition during heating operation of small capacity air-to-air heat pump. We applied an electric heater in front of outdoor unit of heat pump instead of indoor unit as usual. When the outdoor temperature is 2 degrees C/1 degrees C (DB/WB), the present heat pump turns on the electric heater in outdoor unit. The heating capacity increases 38.0% and COP increases 57.0% in comparison with those of conventional heat pump. When the outdoor temperature is 4 degrees C/2 degrees C (DB/WB), the electric heater is in ON/OFF mode according to the temperature of the evaporator. The heating capacity increases 9.1% and COP increases 71.1% in comparison with those of conventional heat pump. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：539 / 543

页数：5

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