Analysis of energy scenarios and cumulative exergy demand of CDQ steam power plant based on life cycle perspective

Mohammad Hossein Asadi Fouzi, Amin Namjoo and Akbar Kohestani

Energy, 2025, vol. 318, issue C

Abstract: The aim of this study is to evaluate pattern of energy consumption, environmental impacts, and cumulative exergy demand analysis based on two scenarios of supplying the required electricity from the national network (S1) and from the production capacity of the power plant itself (S2) in the Coke Dry Quenching system. The total input energy of S1 (883.03 MJ MWh−1) was higher than that of the S2 system (16.11 MJ MWh−1). The rate of environmental loads of electricity production was calculated at the midpoint. The results showed that the global warming impact in S1 (51.5 kg CO2 eq) is higher than that in S2 (1.03 kg CO2 eq). In this study, three categories, including damage to human health, ecosystems, and resources were analyzed at the endpoint. The results show that in the three categories, S1 has higher values than those in S2. The result of total Cumulative Exergy Demand was calculated for S1 and S2 (896.8 MJ MWh−1) and (76.9 MJ MWh−1) respectively. It is concluded that S2 has significant advantages as it can lead to a significant reduction in energy consumption by 54.81 times and cumulative exergy demand index by 11.66 times and also reduce environmental damage compared to scenario S1.

Keywords: Environmental damage; Life cycle assessment; Energy; Cumulative exergy demand (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:318:y:2025:i:c:s0360544225004359

DOI: 10.1016/j.energy.2025.134793

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