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http://dx.doi.org/10.17664/ksgee.2020.16.4.024

Study on the Operation Method of Ground Source Heat Pump System Considering Recovery of Ground Temperature  

Bae, Sangmu (Department of Architectural Engineering, Pusan National University)
Jeon, Jae-Young (Department of Architectural Engineering, Pusan National University)
Kwon, Young Sik (Department of Architectural Engineering, Pusan National University)
Nam, Yujin (Department of Architectural Engineering, Pusan National University)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.16, no.4, 2020 , pp. 24-30 More about this Journal
Abstract
Ground source heat pump (GSHP) systems are actively introduced as cooling and heating conditioning systems of buildings due to annual stable performance and easily maintenance. However, ground temperature imbalance is occurred when the GSHP is used for a long period. Therefore, in this study, we proposed the operation method of the system that considered the recovery time of heat source temperature. The entering water temperature (EWT) and heat exchange rate (HER) were comparatively analyzed according to the continuous and intermittent operation. Furthermore, the underground thermal environment was evaluated by numerical analysis model. As the result, the intermittent operation was a maximum of 12.3% higher HER during the heating period than the continuous operation. In addition, the overall ground heat source temperature at the intermittent operation was higher than it at the continuous operation.
Keywords
Ground source heat pump; Ground temperature; Heat exchange rate; Continuous operation; Intermittent operation;
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Times Cited By KSCI : 2  (Citation Analysis)
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