G0601-2-2 Three Dimensional Heat Transfer Computation on Heat Extraction Using Coaxial Heat Exchanger

Abstract

Various heat exchangers are used to harness geothermal energy that is renewable energy. A coaxial heat exchanger is one of them, and it is composed of an inner pipe and an outer pipe. In the case where multiple heat exchangers are buried in stratum, heat transfer phenomenon must be analyzed in three-dimensions by the influence of heat extraction. In the present study, the heat transfer characteristics when three heat exchangers are buried, and the temperature change of the stratum around the coaxial heat exchangers are measured by numerical simulation.