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Recycling heat into useful energy for green hydrogen production & Producing carbon nanotubes from clothing waste / ALEJANDRO LACONCHA
Swansea University Author: ALEJANDRO LACONCHA
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Copyright: the author, Alejandro Benavides Laconcha, 2025
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Abstract
This thesis investigates hydrogen production through electrolysis, explores heat recovery mechanisms and searches innovative methods to develop materials that enable technology to become more sustainable.The latest forms of energy transport and storage are studied, alongside methods to improve the e...
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Swansea
2025
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| Institution: | Swansea University |
| Degree level: | Master of Research |
| Degree name: | MSc by Research |
| Supervisor: | Courtney, J.; Dunnill, C.; and White, A. |
| URI: | https://cronfa.swan.ac.uk/Record/cronfa71077 |
| Abstract: |
This thesis investigates hydrogen production through electrolysis, explores heat recovery mechanisms and searches innovative methods to develop materials that enable technology to become more sustainable.The latest forms of energy transport and storage are studied, alongside methods to improve the efficiency of the energy sector, as well as the advantages of hydrogen to support the energy industry.To enable sustainable solutions, approaches are presented to enhance efficiencies while considering polluting impacts. The thesis delves in the study of hydrogen as an energy vector and storage method.It offers methods to produce hydrogen efficiently to promote green solutions with the aid of energy recovery systems. In addition, carbon nanotubes (CNTs) were researched, to take advantage of their unique physical properties and aid heat recovery technology.This research aims to find methods to generate economical CNTs to increase their availability for energy engineering projects. To do so, experiments are carried out to generate CNTs sustainably from waste plastic. This effort aims to create new methods to recycle waste.In essence, this thesis studies methods to tackle the increasingly demand for sustainable energy, while also proposing ways to reduce manmade pollution and incentivising a circular economy.Methods for heat recovery and conversion have been suggested, and new CNT material produced from recycled materials has been synthesised and characterised.Key findings demonstrate that electrolysis systems combined with heat recovery systems can improve an electrolyser’s efficiency from 75% to as much as 83%. In addition, the CNTs synthesised from waste plastics proved to be a method to reuse waste while also producing CNTs with desirable structural properties. This finding therefore demonstrates that CNTs can be suitable to improve heat exchange systems while being produced sustainably. |
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| Keywords: |
Hydrogen, CNTs, heat recovery systems, electrolysers |
| College: |
Faculty of Science and Engineering |