LiBr absorption systems integrated with high-efficiency IGSG plant

Abstract

Over the last few years, the energy demand for cooling systems is increasing; different solutions in fact have been proposed in order to minimize the energetic and environmental impact of this trend. In this direction, absorption cooling systems are recognized as a valid alternative to traditional vapor compression inverse cycles; waste heat from other systems can in fact be used as an efficient input instead of electrical energy. The opportunity to integrate LiBr absorption systems with a high-efficiency energy plant was studied; rejected heat from a municipal solid waste gasification plant integrated with solid oxide fuel cell and gas turbine, called IGSG (Integrated Gasification SOFC and GT), was in fact considered to feed absorption cooling units. Two different possible integrations of heat fluxes were investigated; variations of the most critical parameters have been studied and analyzed in order to evaluate plant features and find out critical working conditions.