Thermal Response Tests of Boreholes – Results from In Situ Measurements. Paper submitted to The Geothermal Project at Richard Stockton College Conference

During the last year thermal response tests of boreholes in rock were carried out with a mobile test equipment (TED) in several duct stores for heating and/or cooling. Most of the tests were made for the Swedish t lep one company TELIA that is constructing a great number of direct cooling systems for their telephone switching stations. The size of these duct systems in the different plants tested, varies from 4 to 60 boreholes, drilled in hard rock-mostly granite and gneiss. This paper summarises results and experience from the measurements. 1