Utilization of Thermally Activated Building System with Horizontal Ground Heat Exchanger Considering the Weather Conditions

Woong June Chung and Sang Hoon Park
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Woong June Chung: Department of Equipment and Fire Protection Engineering, College of Engineering, Gachon University, Seongnam 13120, Korea
Sang Hoon Park: Division of Architecture, College of Engineering, Sun Moon University, Asan 31460, Korea

Energies, 2021, vol. 14, issue 23, 1-14

Abstract: The thermally activated building system (TABS) can reduce the peak load by integrating with the ground heat exchangers. When integrated, the cost of groundwork and stability of the ground temperature would counteract because the weather conditions would influence the ground temperature in shallow depth. However, previous studies on TABS assumed constant ground temperatures such as average outdoor air temperature. In this study, ground temperatures in different depths are simulated for their detailed investigations, and simulated results of ground temperature were applied to building energy simulations for observing the load-handled ratio (LHR), representing the peak load reduction by TABS evaluated in various weather conditions. Simulation results of ground temperatures from 1 m to 39 m depths show that the temperature stabilized at 2 m to 11 m depths depending on the characteristics of the outdoor air temperature. LHR increased as the ground depth increased because the ground temperature at shallow depths increased during peak hours. Ground depths of 8 m were found ideal for maintaining consistent LHR for all weather conditions. Detailed observation of ground temperature and its effect on LHR in various weather conditions can help system engineers design and operate the TABS with the ground system.

Keywords: thermally activated building system; ground heat exchanger; load-handled ratio; EnergyPlus; KIVA (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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