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http://dx.doi.org/10.17664/ksghe.2022.18.4.045

Energy Performance and Cost Assessment for Implementing GroundSource Heat Pump System in Military Building  

Byonghu Sohn (Department of Building Energy Research, KICT)
Kyung Joo Cho (Department of Building Energy Research, KICT)
Dong Woo Cho (Department of Building Energy Research, KICT)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.18, no.4, 2022 , pp. 45-57 More about this Journal
Abstract
The Ministry of National Defense of the Republic of Korea is showing a lot of interest in net zero-energy buildings (NZEBs) to reduce energy consumption of military facilities and to promote green growth policy in military sector. The application of building passive technologies and renewable energies is essential to achieving NZEBs. This paper analyzed energy performance and energy cost on the conventional heating and cooling system (baseline scenario) and three different alternative scenarios (ALT 1, ALT 2 and ALT 3) applied in a hypothetical military building. A building modeling and simulation software (DesignBuilder V6.1) with EnergyPlus calculation engine was used to calculate the energy consumption for each scenario. Overall, when the GSHPs are applied to both space airconditioning and domestic hot water (DHW) production, Alt-2 and Alt-3, the amount of energy consumption for target building can be greatly reduced. In addition, when the building envelope performance is increased like Alt-3, the energy consumption can be further reduced. The annual energy cost analysis showed that the baseline was approximately 161 million KRW, while Alt-3 was approximately 33 million KRW. Therefore, it was analyzed that the initial construction cost increase could be recovered within about 6.7 years for ALT 3. The results of this study can help decision-makers to determine the optimal strategy for implementing GSHP systems in military buildings through energy performance and initial construction cost assessment.
Keywords
Ground-source heat pump; Energy performance; Cost; Military building; Simulation; EnergyPlus;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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