Performance Analysis of Air Fuel Heating Effects on Cogeneration Cycles

Abstract

The electrical energy consumption is increasing in our country and in the world. The electrical energy and heat energy are primary energies and has a vital role on industry and our lives. The production of these two energies in different cycles leads to energy loss and low efficiency. With the production of both in the same cycle, the efficiency increases a lot, and the energy losses and emission values decrease a lot. By installing cogeneration system to produce electrical and heat energy, the energy consumption costs can be reduced importantly. The cycle in which the fuel and the air entering into combustion chamber is heated by the heat taken from the exhaust gases at the outlet of the gas turbine is analyzed by using exergy analysis method and, first and second laws of thermodynamics. The heat energy remained in the exhaust gases are used to produce in steam production, after some heat energy is consumed to heat the air and the fuel, in this cycle. The performance analysis of the devices that make up the cycle such as turbine, recuperator compressor, combustion chamber, and heat exchanger and for the whole cycle and were obtained and discussed. Exergy efficiency, exergy losses and other performance parameters of the devices were obtained and discussed.

Exergetic Analyses of Detonation Engine Cogeneration Plants

“…Needless equipment decreases the performance and advantages of the cycle. Also, Karaali and Keven, (2022) investigated four different cogeneration cycles' efficiencies, the effect of absorption cooling of inlet air of compressor and the effect of adding recuperators into these cycles, on the working conditions [12,13,14]. They found that absorption cooling by using waste heat can help to improve the efficiencies and the working conditions of the four cogeneration systems.…”

Performance analyses of basic cogeneration basic cogeneration plants in agriculture and food production

“…In their parametric studies, they showed the best working conditions of this plants and systems. * Corresponding author: rabikar@gmail.com Karaali and Keven [3,4], in their researches they have calculated parametric performance analyses of the three various cogeneration systems those were named basic, air heating, absorption cooling, and air-fuel heating cogeneration systems.…”