| 摘要 |
<p>PURPOSE:To save the hot water reservoir tank capacity and the input to the heating device so as to stabilize the hot water supply and to save the energy by feeding the return hot water to the hot water layer in the hot water reservoir tank when its temperature is above a certain temperature, and by feeding the water from the bottom of the reservoir tank when the temperature is below the certain temperature. CONSTITUTION:The arrangement is such that as hot water is circulated from the top of a hot water reservoir tank 1 through the piping 8, pump 4' and switch valve 9, it is tapped from taps 3, 3 on the way. When the temperature of the excess return hot water is above a certain temperature, the return hot water is discharged to maintain the piston flow from a valve 16 above the boundary of a hot water layer 10 and a cold water layer 11 in order to cause it to overflow from the switch valve 9 to the hot water layer 10 of the hot water reservoir tank 1. When the temperature of the return hot water is below the set temperature, the return hot water is not supplied to the reservoir tank 1 by the switch valve 9, but instead, it is switched to the piping 6' connected to the piping 6 to a heating device 2 for reheating.</p> |
