A Study on Earth Temperature in a Snowy Region for Underground Thermal Energy Storage (UTES)

Abstract

This study describes the long-term measurement and numerical analyses of earth temperature profile under natural climatic conditions in order to make a fundamental data base for Underground Thermal Energy Storage (UTES). First of all, we have measured the earth temperature for about two years at the observing station, which was constructed in Sapporo in 1994. As a result, the temperature of a constant earth temperature layer was approximately 10.3℃. Next, we prepared a calculation program of earth temperature for a snowy region. The results of the calculated earth temperature and snow depth on this program mostly agreed to that measured at the observing station. Also, it was found that the calculation program can be used efficiently in other domestic regions.