| 摘要 |
<p>PURPOSE:To reduce a feed hot water quantity at the time of hot water supply at a high temperature so that there is no overflow even if the temperature is reduced through cold water supply after hot water supply, by controlling supply of hot water when a calorific value for hot water supply arrives at the calorific value calculated by a supply hot water quantity and a temperature to be required beforehand. CONSTITUTION:A calorific value detector 136 for hot water supply is constituted with a flow detector 126 of hot water from a heat source 101 for hot water supply, a temperature detector 124, a calorific value arithmetic unit 139 calculating the calorific value by signals of both the detectors, an integrating calorific value arithmetic unit 140 integrating the calorific value calculated by the calorific value arithmetic unit 139 and an integrating flow arithmetic unit 138 calculating the integrating flow by a signal of the flow detector 126. Then, a calorific value setting device 137 for hot water is constituted with a temperature setting device 131 setting up a temperature of supply hot water, an integrating flow setting device 132 setting up a supply hot water quantity and a calorific value arithmetic unit 141 calculating the calorific value by signals of both the setting devices. A flow controller 122 is controlled in an opening or closing state by a deflection between signals of the calorific value detector 136 for supply hot water and the calorific value setting device 137 for supply hot water.</p> |
