Geothermal heat exchanger fields are complex systems that exploit the soil as a reservoir for space heating and cooling. They consist of several exchangers conveniently arranged in given portion. The design is key phase to ensure long-term sustainability such renewable energy systems. This task requires modelling relevant processes system, i.e., transfer within outside exchangers. We propose ma...

In this paper, the combination of conduction with radiation into a semitransparent medium which includes absorption, emission and scattering has been investigated. In order to Study the conduction in medium, the Non-Fourier heat conduction has been applied. In this model there is a time delay between heat flux and temperature gradient. Also, in contrast with Fourier heat conduction, the speed o...