Conference paper Open Access
Witte, H.J.L.; Heinrichs, F.A.; Reichl, C.; Meeng, C.; Doerr, C.; Steurer, A.; Kling, S.
In this paper we present an analytical solution and its validation for earth basket (vertical spiral) ground heat exchangers. The model, based on the well known Finite Line Source Equation, accounts for the heat exchanger pipe diameter and seasonally varying near surface temperature. For computational efficiency the standard approach of using G-functions has been implemented as well. The analytical model is validated based on laboratory experiments and extensive CFD analysis.
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