| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cogeneration system which is constituted to improve operation efficiency by determining adequacy of operation of a power generation unit taking account of energy or the like generated by the power generation unit. <P>SOLUTION: The cogeneration system includes at least a generator connectable to a feeder line of ac power to an electric load from a commercial electric power system, and the power generation unit comprising an internal combustion engine (an engine) which drives the generator. The cogeneration system includes a step (S10) to compute a value of energy generated when the power generation unit is operated, and to calculate a price of the energy generated by the power generation unit by subtracting a maintenance cost of the power generation unit from the energy value, a step (S12) to compute a power generation price from consumption of fuel in the internal combustion engine and a fuel price, and steps (S14 to S18) to compare the computed price of the energy generated by the power generation unit with the power generation price, and to permit the operation of the power generation unit when the price of the energy generated by the power generation unit exceeds the power generation price. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
