| 摘要 |
PROBLEM TO BE SOLVED: To stably supply hot water without depending on a hot water supply load and improve system efficiency.SOLUTION: A hybrid hot water supply system 100 includes a heat pump type heating device 102 and an auxiliary heating device 115 as heat sources for heating hot water within a hot water storage tank 101, and is configured to enable execution of a boiling-up operation for heating hot water within the hot water storage tank 101 by driving the heat pump type heating device 102 and a heating circulation pump 105 and an auxiliary boiling-up operation for driving the auxiliary heating device 115 and an auxiliary heating circulation pump 116 and operating a selector valve 117 to communicate an upper part of the hot water storage tank 101 with the auxiliary heating device 115. A control section 120 executes the boiling-up operation when the amount of hot water within the hot water storage tank 101 reaches below a first hot water amount threshold value, and executes emergency boiling-up operation for simultaneously executing the auxiliary boiling-up operation in addition to the boiling-up operation when the hot water amount is below a second hot water threshold value smaller than the first hot water threshold value.SELECTED DRAWING: Figure 6 |
