DATABASE ON TEMPERATURE OF SHALLOW HEAT EXTRACTION

Study of underground thermal energy use from shallow underground (Part 1)

Abstract

The authors investigated database on mean ground temperature above 6m depth during heating period，starting with Document of Agricultural Meteorology of Japan written in1950 and summarized mean temperature of underground 100m using the formulas of soil physics. It was confirmed that mean ground temperature above 6m depth was almost same as mean temperature of underground 100m.