| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hybrid cogeneration system that utilizes fuel effectively unlike an individual operation of an existent general-purpose engine generator. SOLUTION: An internal-combustion engine 6 is arranged as a main engine, to which a generator 9 and an air-conditioning compressor 7 are connected, and a solar generator 11 converts solar energy usable during the day into the electric power that charges a storage battery 12. The engine 6 is driven only at the operating point that provides output conditions with high conversion efficiency into rotational energy, and the generated power is DC-converted before charging the storage battery 12. To the DC circuit, an inverter converter 13 is connected, for AC conversion, which is in turn connected to a power-system distribution line 15 and a power-load distribution line 17. Hot water 5 after engine cooling is used as a heat source of a heating/hot-water-supply system. On the basis of the measurements of required electric energy and heat flow, an energy supplying control processor 18 issues commands to select and execute an operating mode with continuous maximum energy conversion/utilization efficiency.</p> |
