Abstract
As a cogeneration system for residences, introduction of a fuel cell and a diesel engine is considered. About the fuel cell, a solid high polymer film type accompanied by methanol steam reforming is taken up. And a small kerosene diesel is taken up for the engine. The algorithm of an employment plan applicable to both systems was proposed, the energy demand pattern of the Hokkaido district was applied to this. And this paper searched for system operation which serves as the minimum of operation cost. As a result, it was found that the heat conversion and heat storage of electric power by an electric heater is effective against efficiency deterioration at the time of partial load. Moreover, it is thought that the fuel unit price of a methanol reforming type fuel cell is becoming half, the operation cost will be competitive.
