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

Title
A study on the performance enhancement of heat pump using electric heater under the frosting condition: Heat pump under frosting condition
Author(s)
배철호곽경민[곽경민]
Keywords
AIR; DEFROST; EVAPORATOR
Issue Date
201005
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
APPLIED THERMAL ENGINEERING, v.30, no.6-7, pp.539 - 543
Abstract
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.
URI
http://hdl.handle.net/YU.REPOSITORY/22488http://dx.doi.org/10.1016/j.applthermaleng.2009.10.016
ISSN
1359-4311
Appears in Collections:
공과대학 > 기계공학부 > Articles
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