지열 냉난방 시스템을 위한 열전도도의 지역별 분포

Regional Distribution of Thermal Conductivity of Ground Heat Exchanger for Geothermal Heat Pump System

This study was performed to construct a geothermal data base about thermal conductivity of ground heat exchanger and thermal properties of grouting material which used to refill the borehole. We have acquired geothermal data sets from 39 sites over wide area of South Korea except to Jeju island. From data analysis, the range of thermal conductivity is $1.5{\sim}4.0$ W/mK. It means that thermal conductivity varies with grouting material as well as regional geology and ground water system.