| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a solar hot water supply system and a method of calculating a cutdown gas usage volume capable of improving accuracy in calculating a gas volume cutdown by a solar water heater. <P>SOLUTION: In this solar hot water supply system 1, a customer station display panel 60 has a heat quantity calculating section 62 for calculating a heat quantity obtained by the solar water heater 10, a gas flow rate calculating section 63 for calculating a gas flow rate supplied to a water heater 20, a correlation data memorizing section 64 for memorizing correlation data indicating correlation of the gas flow rate actually measured in advance and combustion efficiency of the water heater 20, a combustion efficiency calculating section 65 for determining combustion efficiency of the water heater 20 on the basis of the gas flow rate calculated by the gas flow rate calculating section 63 and the correlation data, and a gas usage volume calculating section 66 for calculating the gas usage volume necessary for generating the heat quantity by the water heater 20 as the gas usage volume cutdown by the solar water heater 10 on the basis of the heat quantity determined by the heat quantity calculating section 62 and the combustion efficiency calculated by the combustion efficiency calculating section 65. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
