Fuel savings and CO2 emissions for tri-generation systems

The paper presents a method for analysing tri-generation systems from the point of view of fuel savings and environmental impact. The authors have focused on the solution of tri-generation plants based on gas turbine or internal combustion engine with an absorption chilling machine. Criteria that characterise the fuel savings and CO2 emissions of tri-generation have been defined. An analysis has been performed for the case of tri-generation with an absorption chilling machine. The mathematical dependence of fuel savings and CO2 emissions on different technical criteria has been analysed. For a certain case there has been plotted the variation of fuel savings as a dependence of technical criteria. The graphs highlight the range of technical criteria with better fuel savings for tri-generation than for separate production. There has been established the order of influence of different technical criteria on fuel savings.