Total environmental heat source for heat pump has heat sources such as air collector, earth's heat exchanger and solar absorber connected in series, bridged by bypass lines controlled by valve

摘要

The arrangement has at least two of three environmental heat sources, such as an air collector (1), terrestrial heat exchanger and solar absorber (2) connected in series and each bridged by a bypass line (13,14) controlled by a changeover valve (3,4). The valve allows flow through the air collector if the temperature of the thermal medium upstream of the valve is lower than the ambient air temperature.