Thermo-economic and environmental assessment of selected gas turbine power plants in Nigeria
by Sunday O. Oyedepo; Richard O. Fagbenle; Samuel S. Adefila; Mahbub Md. Alam; Israel S. Dunmade
Progress in Industrial Ecology, An International Journal (PIE), Vol. 12, No. 4, 2018

Abstract: This study aims at thermo-economic and environmental assessment of selected gas turbine power plants in Nigeria using exergy concept. Thermodynamic, economic and environmental analyses were conducted using operating data collected from the selected power plants to determine the exergy destruction of each major component of the gas turbine in each plant and CO₂ emissions with cost rate of environmental impacts. The results of the study show that the combustion chamber is the most exergy destructive component compared to other cycle components. Thermo-economic analysis shows that the cost of exergy destruction is high in the combustion chamber, and an increase in the GTIT effectively decreases this cost. Environomic analysis shows that the CO₂ emissions varied between 100.18 to 408.78 kgCO₂/MWh while cost rate of environmental impact varies from 40.18 $/h (N6, 388.62/h) to 276.97 $/h (N44, 038. 23/h). The results further show that CO₂ emissions and cost of environmental impact decrease with increasing GTIT.

Online publication date: Wed, 02-Jan-2019

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