| 摘要 |
<p>PURPOSE:To minimize the quantity of remaining hot water every day and to reduce the heat discharge loss by a method wherein in the case of the titled hot water feeder comprising a combination of a water heater utilizing the midnight power supply time and a heat pump, the amount of use of hot water is inputted to a hot water quantity setting device and the amount of heat of the remaining hot water is calculated so that only the required amount of heat is obtained. CONSTITUTION:Assuming that the amount of use of hot water on the next day to be stored in a hot water storage tank is V1l (at a hot water temperature of T1 deg.C), the V1l is inputted to the hot water quantity setting device 15, the value detected by a lower part temperature sensor 18 is T2 deg.C, the value detected by a remaining hot water quantity sensor 17 is V2l and the value detected by an upper part temperature sensor 18 is T3 deg.C, a required heat amount operator 16 calculates the amount of heat K1 [K1=(T1- T2)XV1 (K cal)] to be stored in the hot water storage tank until the expiry of the midnight power supply time. Further, a remaining hot water quantity operator 19 calculates the amount of heat K2 [K2=(T3-T2)XV2 (K cal)] of the hot water remained unused in the hot water storage tank. Lastly, a hot water temperature operator 20 calculates the amount of heat K1 obtained by the operators 16 and 19 and the temperature T4 [T4= (K1-K2)l V+T2( deg.C)] of the hot water to be heated on the base of the lower part temperature T2.</p> |
