Ground source heat pump system takes advantage of the stable ground temperature to achieve energy savings and to reduce CO2 emission. However, the system has several barriers for the wider application such as high installation costs, incompletion of design standard and lack of recognition as...

In this paper a numerical model to analyze the thermal behaviour of vertical ground heat exchangers with a helical shaped pipe is presented. This type of configuration can be a suitable alternative to conventional ground heat exchangers, especially when the heating and cooling loads of the...

This paper makes a comparative analysis between a helical-shaped pipe and a double U-tube ground heat exchanger. The two configurations were installed at a shallow depth and studied, since a depth limit is mandatory in some areas. When installed this way, the interaction between the ground...