Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Heating Performance of Geothermal Heat Pump System Applied in Cold Climate Region(Mongolia)

한랭지(몽골) 지열 히트펌프 시스템의 난방 성능 분석

  • Sohn, Byonghu (Green Building Research Division, Korea Institute of Construction Technology) ;
  • Choi, Jae Ho (Research Development Division, KOTEC Engineering) ;
  • Min, Kyung Chon (Research Development Division, KOTEC Engineering)
  • 손병후 (한국건설기술연구원 그린빌딩연구실) ;
  • 최재호 (코텍엔지니어링(주) 기술연구소) ;
  • 민경천 (코텍엔지니어링(주) 기술연구소)
  • Received : 2014.09.25
  • Accepted : 2014.11.06
  • Published : 2015.01.10
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Abstract

Geothermal heat pump (GHP) systems have become an efficient alternative to conventional cooling and heating methods due to their higher energy using efficiency. These systems use the ground as a heat source in heating mode operation and a heat sink in cooling mode operation. The aim of this study is to evaluate the heating performance of the GHP system for a residential building ($420m^2$) in Ulaanbaatar, Mongolia. In order to demonstrate the feasibility of a sustainable performance of this system, we installed the water-to-water geothermal heat pump with ten vertical ground heat exchangers and measured operation parameters from October 19, 2013 to March 26, 2014. The results showed that the entering source temperature of brine from the ground heat exchangers was in a range of the design target temperature of $-10^{\circ}C$ for heating. For total values of the representative results, the ground heat exchangers extracted heat of 53.51 MWh from the ground. In addition, the GHP system supplied heat of 83.55 MWh to the building and consumed power of 30.27 MWh. Consequently, the average heating seasonal performance factor ($SPF_h$) of the overall system was evaluated to be 2.76 during the measurement period of the heating season.

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References

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