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Open AccessArticle

A Study on the Efficiency Improvement of Multi-Geothermal Heat Pump Systems in Korea Using Coefficient of Performance

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Green Building Center, Korea Productivity Center Quality Assurance, 32 Saemoonan 5th street, Jongno-gu, Seoul 03170, Korea
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Department of Architectural Engineering, Graduate School of Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
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Department of Architectural Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 22212, Korea
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School of Architecture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
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Author to whom correspondence should be addressed.
Academic Editors: Nyuk Hien Wong and Chi-Ming Lai
Energies 2016, 9(5), 356; https://doi.org/10.3390/en9050356
Received: 8 January 2016 / Revised: 6 April 2016 / Accepted: 13 April 2016 / Published: 12 May 2016
(This article belongs to the Special Issue Energy Efficient Building Design 2016)
The Korean government is fostering a renewable energy industry as a means of handling the energy crisis. Among the renewable energy systems available, geothermal energy has been highlighted as highly efficient, safely operable and relatively unaffected by outdoors air conditions. Despite the increasing use of renewable energy, the devices using renewables may not be operating appropriately. This study examined current problems in the operation of a geothermal heat pump (GHP) system. The efficiency of a geothermal heat pump system to studied to maximize the operation plan. Our study modelled the target building and analyzed the energy using TRNSYS, which is a dynamic energy simulation tool, to apply the coefficient of performance (COP) and evaluate the operation method. As a result, the GHP total energy consumption from the COP control method was reduced by 46% compared to the current operation. The proposed control method was evaluated after applying the system to a building. The results showed that efficient operation of a geothermal heat pump system is possible. View Full-Text
Keywords: geothermal heat pump (GHP); coefficient of performance (COP); TRNSYS; operation method; renewable energy; building energy; hybrid operation geothermal heat pump (GHP); coefficient of performance (COP); TRNSYS; operation method; renewable energy; building energy; hybrid operation
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Jung, Y.-J.; Kim, H.-J.; Choi, B.-E.; Jo, J.-H.; Cho, Y.-H. A Study on the Efficiency Improvement of Multi-Geothermal Heat Pump Systems in Korea Using Coefficient of Performance. Energies 2016, 9, 356.

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