PERFORMANCE MONITORING STUDY OF BUILDING-INTEGRATED GEOTHERMAL SYSTEM IN WINTER AND SUMMER

The objective of this study is to develop and evaluate ground heat exchanger using the foundation of a building. To this end, we added ground heat exchanger feature to PHC piles and evaluated its heating and cooling performance. First, we investigated the building's foundation system, pipes for heat exchanger and grouting materials. As an outcome, we designed a prototype of building-integrated geothermal system (BIGS). Second, we applied BIGS to apartment houses utility building in Osan S-apartment and G-housing in Song-Do that is 80% energy saving test bed. Third, for the performance of BIGS, we monitored heating performance during winter season in the Osan facility and cooling performance during summer season in the Song-Do facility.