Ground source heat pumps (GSHPs) mean attractive heating and cooling systems. The injection/extraction of thermal energy is obtained by borehole heat exchangers (BHE). Since the GSHP operates at a relatively stable temperature, the coefficient of performance of such systems is higher than that of air source heat pumps. BHEs are drilled to a depth
Godkänd; 2009; 20090811 (khamoh)