Energy modelling of a new co-current coaxial earth – water to air- heat exchanger. Case study: Heating of house in Biskra - Algeria

Earth to air heat exchangers are preconditioning systems designed to preheat the new air of buildings in winter. This paper suggests a study of a new horizontal coaxial earth /water/air heat exchanger (EWAHE) where hot water flows in the centre of the exchanger. After an analytical study of the exchanger in steady state regime, its coupling with the surrounding earth modeled in transient regime by spatio-temporal discretization; we obtain a very...