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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Comparative Analysis of the Energy Performance Simulation for a Building with a Hydrothermal Heat Pump by the Hydrothermal System Integrated Design Program and the ECO2 Program

수열원 열펌프 적용 건물에서 수열시스템 통합 설계 프로그램과 ECO2 프로그램의 에너지 성능 예측 결과 비교

  • Jeong Taek Hong (Graduate School, Seoul Nat'l Univ. of Sci. & Tech.) ;
  • Rin Yun (Dept. of Mechanical Eng. Hanbat Nat'l Univ.) ;
  • hang Yong Park (Dept. of Mech. Sys. Design Eng., Seoul Nat'l Univ. of Sci. & Tech.)
  • 홍정택 (서울과학기술대학교 일반대학원) ;
  • 윤린 (한밭대학교 기계공학과) ;
  • 박창용 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2024.09.23
  • Accepted : 2024.11.15
  • Published : 2024.12.01
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Abstract

Building energy analysis is crucial for the application of a hydrothermal heat pump in a building's HVAC system. In this study, two building energy analysis programs, ECO2 and HSID (Hydrothermal System Integrated Design), were used to simulate the energy performance of a non-residential building, and their results were compared. The HSID program predicted a 38.9% higher building cooling and heating load than the ECO2 program. Regarding annual heating and cooling energy consumption, the HSID and ECO2 programs calculated 107.1 kWh/m2·yr and 42.1 kWh/m2·yr, respectively, revealing a significant difference between the two. The discrepancy in simulation results was attributed to differences in the simulation methods, building input variables, and the HVAC system modeling capabilities of the two programs. Even for buildings with high insulation performance, achieving ZEB (Zero Energy Building) certification was not possible by applying only the hydrothermal heat pump HVAC system. While improvements in COP and reductions in pump power consumption could increase the energy independence rate, it was confirmed that the additional integration of renewable energy sources is necessary to achieve ZEB certification.

Keywords

Acknowledgement

이 연구는 환경부의 재원으로 한국환경산업기술원의 지원(No.202000315002)을 받아 수행된 연구이며 이에 감사드립니다.

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