House heating system combined with underground heat collector - has extra water circulating tubes behind outer wall insulation

摘要

The system for heating a house, in which heating pipes (20) are embedded in the walls, as in the main patent is also combined with a circuit for extracting heat from water below ground level. Outside the heating pipes (20) in the outside walls (33) are further cold protection pipes (34) enclosed by an outer heat insulating layer (36). The latter pipes are connected to a heat exchanger (7) with a coil (45) through which the hot water is circulated (58). This coil is immersed in fluid (58) inside a tank connected by supply and return pipes (56,59) through which water is forced by a pump (57) from the underground heat collecting system. These lines have connections (50,51) to perforated tubes buried under the water level of the soil. The water is also circulated through the window frames to collect heat.