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Economical Analysis of a Small Capacity Heat Pump utilizing Heat Sources of Air, Geothermal and Underground Water Tank using Dynamic Simulation  

Yang, Chul-Ho (Graduate School of Housing, Seoul National University of Science and Technology)
Kim, Youngil (School of Architecture, Seoul National University of Science and Technology)
Chung, Kwang-Seop (School of Architecture, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.8, no.4, 2012 , pp. 17-23 More about this Journal
Abstract
Due to reinforcement of international environment regulation and high oil prices, interest in renewable energy is growing. Countries participating in UNFCCC are continuously putting efforts in reducing greenhouse gas after enforcing Kyoto Protocol into effect on Feb, 2005. Energy used in buildings, which relies heavily on fossil fuel accounts for about 24% of total energy consumption. In this study, air, geothermal and water source heat pump systems for an 322 $m^2$ auditorium in an office building is simulated using TRNSYS version 17 for comparing energy consumptions. The results show that energy consumptions of air, geothermal and water source heat pumps are 14,485, 10,249, and 10,405 kWh, respectively. Annual equal payments which consider both initial and running costs become 5,734,521, 6,403,257 and 5,596,058 Won. Thus, water source heat pump is the best economical choice.
Keywords
EHP(Electric Heat Pump); GSHP(Ground source heat pump); Dynamic simulation; WSHP(Water source heat pump); Economic comparison; TRNSYS;
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