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http://dx.doi.org/10.17664/ksghe.2021.17.4.059

A Study on Comparative Analysis of Energy Performance of Hybrid Heat Pump Systems Using Ground Heat Source and Water Heat Source  

Park, Sihun (Department of Mechanical Engineering, KyungHee University)
Kim, Jonghyun (Department of Green Energy Installation, Seoul Jungsu Campus of Korea Polytechnic)
Min, Joonki (Department of Mechanical Engineering, KyungHee University)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.17, no.4, 2021 , pp. 59-67 More about this Journal
Abstract
In this study, the performance of the single heat source system and the hybrid system was comparatively analyzed. Case 1 is a ground heat source system, and Case 2 is a water heat source system. Case 3, a hybrid system, reduced the capacity of the ground heat source and applied a water heat source as an auxiliary heat source, and Case 4 was composed of a system that applied a water heat source as an auxiliary heat source to the ground heat source system. As a result of the simulation, in case 3, energy consumption was reduced by up to 2.67% compared to ground sources for cooling. In Case 4, COP was improved by up to 10.02% compared to ground sources during cooling, and EST was calculated to be 2.42℃ lower. During heating, 0.83% was improved compared to the water heat source. At this time, the EST was calculated to be 2.25℃ higher than the water heat source.
Keywords
Ground heat source; Water heat source; Hybrid heat pump; Heat pump; COP(Coefficient Of Performance);
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