| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a heat of a bathtub water left to be natural heat sink after bathing is finished to be recovered and recycled. SOLUTION: A heat recovery system comprises a bath circulating circuit 19 for coupling the bathtub 12 to a bath heat exchanger 15 for heating the bathtub water, a heat exchanger 20 installed in a hot water storage tank 3 and connected to the circuit 19, a bypass route 21 provided to bypass the exchanger 20, and a first and second channel switching valves 22 and 23 for switching a circulation of the bathtub water through either the exchanger 20 or the route 21. Thus, when a temperature of the bathtub water is higher than a temperature of the hot water in the tank 3, the bathtub water is circulated through the exchanger 20 in the tank 3 to recover the heat of the bathtub water to the tank 3.</p> |
