pdfCV Alexandre Lucas
PhD supervisor : Carla Alexandra Silva ; PhD co- supervisor Rui Pedro Neto and Randolph Kirchain.
PhD Thesis (2013): Evaluation of Energy Supply Infrastructure in the context of Life-cyce analysis of alternative light-duty vehicles
Thesis abstract: Many transportation environmental life cycle analyses (LCA), neglect the contribution of the energy supply infrastructures. In alternative light-duty vehicle technologies, it has been shown through case studies that this can be a relevant factor. However, no model exists to generalize the evaluation of emissions and energy from construction, maintenance and decommissioning of such infrastructure in different scenarios. This study proposes a model, focusing on electricity and on hydrogen supply through centralized steam methane reforming, H2(a), and on-site electrolysis H2(b). The model outputs are in gCO2eq and MJeq per MJ of final energy. The model main inputs are: the region’s electricity mix, the annual distance driven, the supply chain losses and the number of vehicles per station or electric chargers. The evaluation of the number of vehicles served per each charger/station as a function of annual distance driven is also discussed. The uncertainty in the study is incorporated by using the pedigree matrix, the impact uncertainty and literature estimates. The study shows that infrastructure impacts are higher in alternative vehicle pathways. Moreover, higher renewable energy penetration in the electricity mix means higher contribution to infrastructure LCA. The model shows consistency in the results and in the uncertainty range. Charging policies that minimize the electricity infrastructure burden should incentivize approximately 37% of vehicle charging in normal chargers. H2(a) pipeline lifetime should be extended and improvements in the electrolyser should be undertaken, to approximate the ratio of vehicles per station to a conventional one.
Keywords: alternative propulsion technologies; alternative energy pathways; electricity, hydrogen; life-cycle analysis; energy supply infrastructure;
Alexandre Lucas has successfully discussed his thesis on November, 19th, 2013 with the following members of the jury:
- Paulo Ferrão, Técnico Lisboa, ULisboa
- João Afonso, School of Engineering, UMinho
- Randolph Kirchain, Massachusetts Institute of Technology
- Fausto Freire, Faculdade de Ciências e Tecnologia, Universidade de Coimbra
- Tiago Domingos, Técnico Lisboa, ULisboa
- Rui Pedro Neto, Técnico Lisboa, ULisboa
- Carla Alexandra Silva, Técnico Lisboa, ULisboa