Jul. 29, 2008 - The German manufacturer Roth Werke GmbH offers a newly developed solar-assisted GSHP system called "Solargeo-Energiesystem". According to Roth this system provides an efficiency increase of up to 25 percent compared to commonly used GSHP installations.The Solargeo-Energiesystem combines a solar collector, a brine-to-water heat pump and compact geothermal collector packages (Registerstation) buried in the ground. This heat source installation requires neither borehole drilling nor large-area earth moving.
