Abstract
The Sustainable Development Goals 2030 Agenda of United Nations raises the need of clean and affordable energy. In the pathway for more efficient and environmentally friendly solutions, new alternative power technologies and energy sources are developed. Among these, the use of syngas fuels for electricity generation can be a viable alternative in areas with high biomass or coal availability. This paper presents the energy, environmental and economic analyses of a modern combined cycle plant with the aim to evaluate the potential for a combined power plant running with alternative fuels. The goal is to identify the optimal design in terms of operating conditions and its environmental impact. Two possible configurations are investigated in the power plant presented: with the possibility to export or not export steam. An economic analysis is proposed to assess the plant feasibility. The effect of the different components in its performance is assessed. The impact of using four different syngases as fuel is evaluated and compared with the natural gas fuelled power cycle. The results show that a better efficiency is obtained for the syngas 1 (up to 54%), in respect to the others. Concerning pollutant emissions, the syngas with a GHG impact and lower carbon dioxide (CO2) percentage is syngas 2.
Highlights
Research BackgroundNowadays, the concern for climate change and the limited availability of fossil fuel sources are pushing research to focus on sustainable energy resources
This paper develops energy, environmental and economic analyses of a modern combined cycle plant with the objective to evaluate the potential benefits for a combined power plant running with alternative fuels in an area with a high biomass availability in order to reduce costs and global emissions
The results show how using syngas fuel Heat Rate can be decreased by 3% with respect to natural gas
Summary
The concern for climate change and the limited availability of fossil fuel sources are pushing research to focus on sustainable energy resources. Recent studies are based on the natural gas/syngas use mixtures in order to obtain the optimal performance in terms of fuel efficiency and flame velocity and propagation with a lower environmental impact in terms of pollutant emissions [53,54]. In this sense, numerical simulation represents today an important tool for the prevision of the effects in use of syngas [55,56,57,58,59,60]. The effects of the different fuels on CO2 emission are analyzed
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