Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
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An Applicability Analysis of River Water Source Heat Pump System using EnergyPlus Simulation

에너지플러스 시뮬레이션을 통한 하천수 열원 히트펌프 시스템의 적용 가능성 분석

  • 손병후 (한국건설기술연구원 건축에너지연구소)
  • Received : 2022.05.02
  • Accepted : 2022.05.27
  • Published : 2022.06.01
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Abstract

A water source heat pump (WSHP) system is regarded as an energy-efficiency heating and cooling supply system for buildings due to its high energy efficiency and low greenhouse gas emissions. Recently, water sources such as river water, lake water, and raw water are attracting attention as heat sources for a heat pump system in Korea. This paper analyzed the applicability of a river water source heat pump system (RSHP). The river water temperature level was compared with the outdoor air and ground temperature levels to present applicability. In addition, the cooling and heating performance were compared through a simulation approach for the RSHP and a ground source heat pump (GSHP) applied to a large-scale office building. To compare the temperature level, the actual data were applied to the river water and the outdoor air, while the simulation results were applied to the ground circulation water. The results showed that the change in river water temperature throughout the year was similar to the change in outdoor air temperature. However, unlike the outdoor air temperature, the difference between the hourly and daily average river water temperatures was not large. The temperature level of river water was lower during the heating season and somewhat higher during the cooling season than that of the ground circulation water. Finally, the performance of the RSHP system was 13.4% lower than that of the GSHP system on an annual-based.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부 한국건설기술연구원 연구운영비지원(주요사업) 사업으로 수행되었습니다(과제번호 20210204-001, 공공데이터 기반 건물에너지 광역 검진 기술 개발). 아울러 본 논문의 일부 내용은 한국수자원공사의 재정 지원(20210620-001)을 받아 수행한 결과입니다.

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