Título: | ON-BOARD HYDROGEN GENERATION FOR VEHICLE APPLICATION: ENVIRONMENTAL TECHNICAL ASSESSMENT OF EXISTING APPLICATION | ||||||||||||
Autor(es): |
CAROLINA BUHLER RICCIERI |
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Colaborador(es): |
FLORIAN ALAIN YANNICK PRADELLE - Orientador |
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Catalogação: | 07/FEV/2020 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | SENIOR PROJECT | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/TFCs/consultas/conteudo.php?strSecao=resultado&nrSeq=46768@1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/TFCs/consultas/conteudo.php?strSecao=resultado&nrSeq=46768@2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.46768 | ||||||||||||
Resumo: | |||||||||||||
The emergence of new technologies is due to the need for innovation of existing technologies that are dependent on environmentally harmful fossil resources. The bioelectrification route in the automotive sector is a great example of how new technologies emerge from hybrid, fuel cells to 100 percent electric, with the aim of following a direction of innovation and improvement. A literature survey was performed using the Life Cycle Assessment method (LCA) taking into consideration the CO2 emission potential (g CO2eq/MJ) and the energy ratio (Output/Input) of technological solutions leading to electrification of the fleet, such as fossil (gasoline, diesel and natural gas), biofuel(ethanol, biodiesel and HVO), fuel cells (SOFC and PEM), hybrids (PHEV and HEV) and electric technologies (BEVs). Thirty-two articles were analyzed in which 159 scenarios were identified, with different types of perimeter covered being Well to Gate (fuel production), Well to Tank (from production to gas station) and Well to Wheel (from well to end use). Fuel cell technologies (SOFC – water reforming) have the lowest impact of CO2 (3,5 g CO2/MJ), representing around 8,5 percent of natural gas emissions (41 g CO2/MJ), and have an energy ratio of 2,4, around 50 percent of the value of natural gas. However, biofuels have the highest energy ratio of 6,28 among the technologies mentioned previously, although their CO2 emissions are 22 g CO2/MJ, which is not the best value, but still makes them a good option to replace the fossil fuels. In addition, some production and distribution costs (sale) are analyzed, where the electric technologies have the lowest value for production cost, which causes a reflection on their cost per kilometers driven, although its distribution cost is not the lowest Biofuels have a higher production cost than fossils, their distribution price is lower. As for vehicle costs, it was expected that vehicles with new technologies like fuel cell vehicles would be more expensive because they are more complex and require a high investment cost, which ends up affecting the fuel cost per kilometers driven. It is noted that it is important that there is investment through public policies to encourage the development of these new technologies, as in many contexts they are better than the fossil technologies on which there is a large dependence and a very large GHG effect is generated.
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