| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat recovering system recovering heat again after termination of recovering of heat of remaining hot water in a bathtub. <P>SOLUTION: This heat recovering device includes a heat exchanger 13 for heating hot water/water in a hot water storage tank 11 while using the remaining hot water in the bathtub 12 as a heat source, a first temperature sensor 14 for measuring a temperature of the hot water/water at a lower section in the hot water storage tank 11, a second temperature sensor 15 for measuring a temperature of the remaining hot water in the bathtub 12, and a control device 16 detecting the temperatures measured by the first temperature sensor 14 and the second temperature sensor 15, and recovering heat of the remaining hot water in the bathtub 12. The control device 16 records the temperature X2 measured by the first temperature sensor 14 at a time when the heat recovery of the remaining hot water in the bathtub 12 is terminated, then measures a temperature Y2 of the remaining hot water in the bathtub 12 by the second temperature sensor 15, when it detects that the temperature measured by the first temperature sensor 14 reaches a temperature X3 lower than a temperature obtained by subtracting a predetermined set temperature T2 from the temperature X2, and recovers the heat of remaining hot water in the bathtub 12 when the temperature Y2 is higher than the temperature X3 by a set temperature T1 or more. <P>COPYRIGHT: (C)2011,JPO&INPIT |
