Investigation of the effect of seasonal variation in ground temperature on thermal response tests
Linden Jensen-Page, Guillermo A Narsilio, Asal Bidarmaghz, Ian W Johnston
RENEWABLE ENERGY | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2018
Economical design of Ground Heat Exchangers (GHEs) relies significantly on accurate estimations of ground thermal properties, including undisturbed ground temperature, ground thermal conductivity, and GHE thermal resistance. Typically these are measured in situ by a Thermal Response Test (TRT), where the parameters are back-calculated by fitting a heat transfer model to the temperature response. The accuracy of most models relies on an assumption of constant ground temperature with depth, but in reality there are several mechanisms by which this may be invalid, one being seasonal variation in ground temperature. In this paper a study of Infinite Line Source Model performance under different ..View full abstract
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Awarded by Australian Research Council
The authors appreciate the support of the Australian Research Council (FT140100227), The Victorian Government's Energy Technology Innovation Strategy: Sustainable Energy Pilot Demonstration (SEPD) Program, and The University of Melbourne.