| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a storage type hot water supply device for supplying hot water to a customer at lower cost while reducing electricity usage. <P>SOLUTION: This storage type hot water supply device 10 includes an operation pattern, an operation pattern accumulating section 116 for accumulating predicted electric energy and a rate of late-evening discount power by each operation pattern, an operating section 115 adding an operation pattern of low predicted electric energy or high rate of late-evening power to the operation pattern accumulating section 116 in comparison with the predicted electric energy and the rate of late-evening power of all of accumulated operation patterns, and acquiring predicted fee of each operation pattern, an optimum operation pattern specifying section 117 for specifying the operation pattern of maximum operation evaluation value as the optimum operation pattern by each predicted fee of each operation pattern, an operation instructing section 118 for giving a boiling-up instruction according to the optimum operation pattern, and a hot water supply section 200 for supplying hot water to the customer according to the boiling-up instruction. <P>COPYRIGHT: (C)2010,JPO&INPIT |
