需要分布を考慮した都市におけるコージェネレーションシステムの導入評価

抄録

Cogeneration system (CGS), especially new type of CGS which utilizes new generation systems such as fuel cells, is expected to be one of the most efficient energy supply system in urban areas. The supply of a CGS for commercial users, however, is currently limited to one building. The economic advantage and energy efficiency of a CGS could be significantly enhanced by increasing the supply area.
This paper developed two kinds of fuel cell-CGS simulation models and evaluated the optimal supply areas and layouts for CGS's as well as their optimal scale and operation. It is found that: 1) the optimal size of a CGS depend on various factors such as type of consumer, demand distribution, and particularly initial piping cost; 2) the range of the CGS cost with which CGS can compete with commercial electric power systems is broad enough to allow fuel cell-CGS to be introduced in the market; and 3) the model enables evaluation of the existing demand areas and the applicability of the model is shown using some numerical examples.