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2025 Vol.45, Issue 2 Preview Page

Research Article

Experimental Study on the Cooling Energy Consumption According to Operation Condition of the Electric Heat Pump System

전기 히트펌프 시스템의 운전조건에 따른 냉방 에너지 소비량에 관한 실험적 연구

Tae Yang Kim1
,
Hyo Jun Kim2
,
Jin Hyun Lee3
,
Han Gyeol Lee4
,
Young Hum Cho5*
김 태양1
,
김 효준2
,
이 진현3
,
이 한결4
,
조 영흠5*
1Master Course, Architecture Engineering, Graduate School of Yeungnam University
2Director, BETECH
3Research Professor, Architecture Research Institute, Yeungnam University
4Ph.D Student, Department of Architecture, Yeungnam University
5Professor, School of Architecture, Yeungnam University
1영남대학교 일반대학원 건축학과, 석사과정
2비텍, 대표
3영남대학교 건축연구소, 연구교수
4영남대학교 일반대학원 건축학과, 박사과정
5영남대학교 공과대학 건축학부, 교수
*Corresponding Author
30 April 2025. pp. 23-32
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Abstract

The study aim was to derive optimal operating conditions by considering the initial indoor load and energy efficiency of an electric heat pump (EHP) system. In this study, the set temperature and supply air volume were classified by case, and a comparative analysis was conducted after calculating the cooling capacity, recommended temperature arrival time, power consumption, energy consumption, and Coefficient of Performance (COP) under different operating conditions. An experiment was conducted in which the target space was selected and a sensor was used to measure the indoor temperature. Further, a hot wire anemometer was installed at the inlet of the evaporator outlet to measure the discharge wind speed. To measure the refrigerant temperature change, thermocouples were attached to the inlet and outlet pipes of the evaporator and condenser. The study findings revealed that operating the EHP system by setting the temperature low and supply air volume large until the recommended temperature was reached was the driving method that quickly eliminated the initial indoor load and consumed the least energy.

Keywords
Electric heat pump
Refrigeration cycle
Cooling capacity
Coefficient of performance
키워드
전기 히트펌프
냉동사이클
냉방 능력
성능계수
References
1

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2

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10.5659/JAIK_PD.2014.30.1.225
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 45
  • No :2
  • Pages :23-32
  • Received Date : 2024-12-31
  • Revised Date : 2025-02-18
  • Accepted Date : 2025-02-19
  • DOI :https://doi.org/10.7836/kses.2025.45.2.023
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