Heating system using low:temperature water - passes water from first radiator through second in cold air passage

摘要

The heating system for a building etc. has a circuit using heating water at low temperature supplied from a source such as a geothermal well, a solar boiler, a heat pump, and a hot water reservoir, passing the hot water through a first radiator installed in the building etc. From the outlet from the first radiator (3) the water is passed through a second radiator (4) mounted in a cold air passage (5) supplied from outside the building and discharging inside it. The water emanating from the second radiator is then returned to the source. The first radiator can comprise two or more sections connected in parallel, serving zones heated to different levels.