The deployment of power-to-fuels systems as a carbon mitigation and energy storage strategy

Sogbesan, Samuel ORCID: 0000-0002-0304-432X (2024). The deployment of power-to-fuels systems as a carbon mitigation and energy storage strategy. University of Birmingham. Ph.D.

Preview

Sogbesan2024PhD.pdf
Text - Accepted Version
Available under License All rights reserved.
Download (4MB) | Preview

Abstract

One of the critical challenges faced in the fight to mitigate the effects of climate change lies in the uncertainty of the successful deployment of any proposed means in light of an ever-dynamic socio-economic world. This study seeks to examine one of the means of climate change mitigation within the context of road transport via the deployment of electrofuels. The body of this thesis aims to explore gaps in the analysis of the potential of fuels that could be made available for future vehicles that rely on carbon-based fuels. The methodology takes a conservative yet realistic approach - if near-term climate change targets remain unmet.

Using the United Kingdom as a case study, this study assessed the potential of carbon dioxide that is readily available to be captured and valorised into electrofuels. The fuels discussed were considered based on their immediate adaptability with the current infrastructure. Process models were developed for the solid oxide electrolysers and various fuel synthesis processes.

The techno-economic performance of producing each fuel in terms of their profitability. The results showed that the economic viability of producing these fuels is highly dependent on the source and, consequently, the price of electricity. Using the net present value as a key economic indicator, profitability is achieved when the electricity prices are below £17.4 per MWh. A fuel performance analysis is carried out to understand how these fuels perform energetically and environmentally in today’s vehicles. A well-to-wheel analysis showed that internal combustion engine vehicles achieve efficiencies between 11.3% to 19.8%.

A discussion on the prospects and barriers to deploying electrofuels concludes this study’s assessment. The current infrastructure and limitations are highlighted at the close of this work. The significance of this study is to inform stakeholders of the opportunities and consequences of deploying electrofuels as a climate mitigation option and as a transitionary and enabling technology towards long-term climate strategies.

Type of Work:

Thesis (Doctorates > Ph.D.)

Award Type:

Doctorates > Ph.D.

Supervisor(s):