Energy modelling of a cogeneration system for a food industry

Abstract

This paper deals with energy modelling of a food industry, for which a cogeneration system is proposed in order to obtain electric energy together with steam and hot water for proess heat. After a description of the firm and of its energy demand, the gas turbine and the related heat exchangers are introduced and modelled. The energy-balance equations are numerically solved via the TRNSYS code, properly modified to account for the new components and the new situation. The investigation is carried out over a period of 1 yr and shows how self-cogeneration in industry allows one to obtain relevant energy savings and financial gains.