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

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Performance Evaluation of Combined Heat Pump System according to the Ratio of Ground Heat Source and Water Heat Source

지열원 및 수열원 비율에 따른 복합열원 히트펌프시스템 성능 평가 연구

  • Park, Sihun (Department of Mechanical Engineering, KyungHee University) ;
  • Ko, Yujin (Department of Mechanical Engineering, KyungHee University) ;
  • Min, Joonki (Department of Mechanical Engineering, KyungHee University)
  • Received : 2021.04.22
  • Accepted : 2021.05.28
  • Published : 2021.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, combined heat source heat pump system was implemented with 4 single heat source heat pumps each applied with a geothermal source and a water source. Five cases (Case1~Case5) were configured to conduct a performance comparison and analysis of the combined heat source heat pump system. First of all, as a result of analyzing the heat source, the case when 4 ground heat sources were applied (Case1) showed a uniform EST(Entering Source Temperature) distribution throughout the year since it is less affected by outside air compared to the case when 4 water heat sources were applied (Case5). In both winter and summer, the ground heat source maintained higher EST than the water heat source. Therefore, the system with high ratio of geothermal sources is advantageous for heating, and with high ratio of water heat sources is advantageous for cooling.

Keywords

Acknowledgement

이 논문은 정부(환경부 환경기술개발사업)의 재원으로, 한국환경산업기술원의 지원을 받아 수행된 연구임(No. 2020003160021).

References

  1. Bea, S., Jeon, J. Y., Kwon, Y. S., and Nam, Y., Study on the Operation Method of Ground Source Heat Pump System Considering Recovery of Ground Temperature, Korea Society of Geothermal Energy Engineers, Vol. 16, No. 4, pp. 24-30.
  2. Bae, H. H., Lee, D. H., Lee, S., Kim, B., and Ahn, Y. C., A Study on the Performance Improvement of a Simultaneous Heating and Cooling Water Source Heat Pump System by Controlling of the Refrigerant Flow Rate in an Outdoor Unit, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 25, No. 3, pp. 131-136. https://doi.org/10.6110/KJACR.2013.25.3.131
  3. Sohn, B., Design of Ground-Coupled Heat Pump (GCHP) System and Analysis of Ground Source Temperature Variation for School Building, Korea Society of Geothermal Energy Engineers, Vol. 16, No. 1, pp. 17-25.
  4. Ko, Y., Park, S., and Min, J., Comparison of Heat Pump Performance and Energy Consumption Patterns according to Heat Sources for Optimal Control of Multi-Source Heat Pumps, Korea Society of Geothermal Energy Engineers, Vol. 16, No. 4, pp. 31-38.
  5. Cho, Y. U., Woo, T., Chung, K. S., and Kim, Y., Study on Energy Consumption of Air-source, Ground-source and Dual-source Heat Pump during Intermediate Season, Korea Society of Geothermal Energy Engineers, Vol. 9, No. 4, pp. 1-7.
  6. Sohn, B., Lee, D. Y., Choi, J. H., and Min, K. C., Performance Analysis of Cooling Tower-Assisted Hybrid Ground-Coupled Heat Pump (HGCHP) System, Trans. Korean Soc. Mech. Eng. C, Vol. 4, No. 1, pp. 19-26.
  7. Klein, S. A., 2019, TRNSYS18 Base Manual, KESTech, Kocaeli, Turkey.
  8. Ministry of Land, Infrastructure and Transport, 2017, Standard of Building Saving, MLIT criteria 2017-881.