PURPOSE: To obtain energy saving system to which improvements in heat collecting efficiency and in heat collecting contribution are contrived, by constituting a solar heat circuit by making use of a coolant circuit for an air heat source and a hot water supply device of a heat pump type.
CONSTITUTION: A condenser of a heat pump is constituted by dividing the condenser into two such as a first hot water heat exchanger 2 and a second hot water heat exchanger 3, valves 4, 5 are provided on outlet sides of the first hot water heat exchanger 2 and the second hot water heat exchanger 3 respectively, hot water is circulated from the first hot water heat exchanger 2 to a solar heat collector 6, after collection of heat under a high temperature and high pressure, after collection of heat under a high temperature and high pressure it is streamed from the second hot water heat exchanger 3 to an air heat source evaporator 8, which form a coolant circuit, and from the first hot water heat exchanger 2 directly to the second hot water heat exchanger 3, circulated to the solar heat collector 6 through a decompression mechanism 7, and the coolant circuit to the air heat source evaporator 8 is switched over after heat collection under a low temperature and low pressure.
KAMATA JIYOUJI
IMABAYASHI SATOSHI
KAJITANI TOSHIMOTO
