Abstract
AbstractA conceptual gas turbine–powered cogeneration system is proposed where a reverse Brayton refrigeration cycle is employed for compressor inlet air cooling that can reduce the inlet air temperature close to 0° C or lower, which cannot be achieved through evaporative and absorption inlet cooling techniques, respectively. The conservation of energy (first law of thermodynamics) and the quality of energy (second law of thermodynamics) are both investigated for the system under various operating conditions. The results indicated that both energetic and exergetic efficiencies of the cogeneration cycle are considerably varied with the change in the extraction pressure ratio, extracted mass rate, turbine inlet temperature, and process heat pressure, and least affected by the ambient relative humidity. Exergy analysis of the proposed cogeneration shows that maximum exergy is destroyed during the combustion and steam generation process, which represents more than 87% of the total exergy destruction in the ov...
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