| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hot water supply device in which the wasteful heat radiation of stored hot water is prevented without cutting off the hot water. SOLUTION: The flow rate of water upon boiling up is obtained from any of desired temperature, reference water temperature and reference heating capacity or the combination thereof on the basis of the amount of stored hot water Lt at 23:00 to estimate boiling up time and adjust boiling up start time t-start. For instance, (a) when the amount of stored hot water Lt at 23:00 is small, much boiling up time tw is taken, so that the boiling up start time t-start is advanced. (b) When the amount of stored hot water is large, the boiling up time tw may be less taken, so that the boiling up start time t-start is delayed.</p> |
