| 摘要 |
PROBLEM TO BE SOLVED: To improve the combined efficiency in a cogeneration system utilizing a reciprocating engine. SOLUTION: The steam produced in a waste heat steam boiler 3 of the reciprocating engine 2 is partially or fully guided to a steam ejector 10, and ejected there to reduce the pressure in a vacuum evaporator 9 by the ejecting action, the heated hot water is evaporated by the cooling water in the vacuum evaporator 9 by the pressure reducing action, the evaporated steam is mixed with the steam coming from the waste heat steam boiler 3 in the steam ejector 10 to be supplied to the steam utilizing equipment 11 side. By taking out the steam from two systems, the combined efficiency can be improved by about 30% in comparison with a conventional example. By converting the waste heat into the steam of a wide range of the utilization, the convenience in utilization of the system can be improved.
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