Energy, Exergy and Parametric Analysis of a New Cogeneration System Including the Brayton and Ammonia–Water Rankine Combined Cycle

Efficient consumption of energy resources and minimizing relevant costs are both substantial issues that not only don't fade into insignificance by time but also have turned out to be essential concerns due to energy crisis and recent price rises in fuel carriers. Recently, much more efforts are made to develop modern systems do decrease the amount of energy consumption and relevant costs regarding to the problems of energy and environmental pollution. Combined Heat and Power (CHP) is one of the systems, which means, generation of two types of energy simultaneously. CHP involves concurrent thermodynamic generation of two or more forms of energy from one simple primary source. CHP has a long history of application in various industries. Applying new approaches to optimize energy consumption has been always one of the most significant issues to draw scientists' attention. The proposed configuration in this new study has not yet been provided in other studies. The current study deals with a cogeneration system for simultaneous production of electricity and heat based on an energy and exergy analysis method. The applied simulation method involves writing conservation equations of energy and mass, and pertinent relations to exergy analysis with the aid of Engineering Equation Solver program (EES) as the initial stage. The effects of design parameters including the compressor pressure ratio, input temperature of the gas turbine, organic evaporator temperature, etc., will be taken into an account as well. The results of the analysis are presented in tables and diagrams.