| 摘要 |
PROBLEM TO BE SOLVED: To permit the utilizing of a heat source surely in accordance with a preferential order and prevent the temperature of cold water, supplied from an evaporator, from overshooting even when a load is suddenly changed. SOLUTION: When a cold water temperature T, measured by a temperature sensor 19, is lowered from a main set value or 7 deg.C upon forcibly controlling the flow rate of waste hot-water, supplied from a low temperature heat source supplying tube 18 into a low-temperature water regenerator 6, so as to achieve the maximum value, PID control, wherein 6 deg.C lower than the main set value of 7 deg.C is made standard, is re-started to control the flow rate of the waste hot-water, supplied from the low-temperature heat source supplying tube 18 into the low-temperature water regenerator 6. When the cold water temperature T, measured by the temperature sensor 19, becomes 8 deg.C, higher than 7 deg.C, upon controlling forcibly the flow rate of exhaust gas, supplied from a high- temperature heat source supplying tube 16 into a high-temperature regenerator 1, so as to be zero, the PID control, based on the main set value of 7 deg.C, is re-started to control the flow rate of exhaust gas, supplied from the high- temperature heat source supplying tube 16 into the high-temperature regenerator 1.
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