| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply system for bath in which energy is saved and the operating time is shortened by hot water supply operation utilizing waste heat of bath while reducing the size of the system. SOLUTION: The hot water supply system for bath comprises a coolant circuit 5 including a compressor 1, a coolant/hot water heat-exchanger 2, a pressure reducing means 3 and an evaporator 4, a water/hot water heat- exchanger 9 having heat-exchanging relationship with the coolant/hot water heat-exchanger 2, a hot water supply circuit 10 provided with a bath heat- exchanger 8, and a bath circuit 14 provided with a bath heat collecting heat- exchanger 13 having heat-exchanging relationship with the bath heat-exchanger 8. Low temperature hot water (supple water) supplied from a hot water storage tank 6 is heated with hot water remaining in the bathtub 11 and supplied to the water/hot water heat-exchanger 9 where it is heated up to high temperature by the heat pump condensation heat of the compressor 1 before being stored in the hot water storage tank 6. |
