Criteri di Ottimizzazione di Sistemi Cogenerativi: Approccio Multiobiettivo

Cogeneration is commonly recognized as one of the most effective solutions to achieve the increasingly stringent reduction in primary energy consumption and greenhouse emissions. This characteristic led to the adoption of specific directives promoting this technique. In addition, a strategic role in power reliability is recognized to distributed generation. The study and prototyping of cogeneration plants, therefore, has involved many research centers. Similar activities were carried out by DiME (University of Naples). These activities highlighted the need of the study of cogeneration system-user interaction in order to estimate the real energetic and economic benefits. The paper includes the development of a specific methodology used to conduct analysis with reference to a specific hospital facility profile loads. Energetic and economic benefits due to CHP plants depend on plant and user characteristics, plant lay-out and management logic, economic variables. Therefore the potential benefits that have attracted the attention of the scientific community are not always granted. For this reason a predictive analysis is important to find a plant solution (engine size, plant configuration, management logic, possible absorption chiller size, engines number, etc..) that approaches the best energetic solution while ensuring a reasonable profit. Therefore the determination of the plant optimal configuration has been pursued through a multi-objective approach.