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Performance Prediction of Geothermal Heat Pump System by Line-Source and Modified DST(TRNVDSTP) Models  

Sohn, Byong-Hu (Green Building Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.8, no.2, 2012 , pp. 61-69 More about this Journal
Abstract
Geothermal heat pump(GHP) systems have been shown to be an environmentally-friendly, efficient alternative to traditional cooling and heating systems in both residential and commercial applications. Although some experimental work related to performance evaluation of GHP systems with vertical borehole ground heat exchangers for commercial buildings has been done, relatively little has been reported on the performance simulation of these systems. The aim of this study is to evaluate the cooling and heating performance of the GHP system with 30 borehole ground heat exchangers applied to an commercial building($1,210m^2$) in Seoul. For this purpose, a typical design procedure was involved with a combination of design parameters such as building loads, heat pump capacity, circulating pump, borehole diameter, and ground effective thermal properties, etc. The cooling and heating performance prediction of the system was conducted with different prediction methods and then each result is compared.
Keywords
Line-source model; Modified DST(TRNVDSTP) model; Geothermal heat pump; Cooling and heating;
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Times Cited By KSCI : 2  (Citation Analysis)
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