Publicação
Projecto óptimo da rede de produção e abastecimento de hidrogénio a grandes consumidores industriais em Portugal
| Resumo: | This thesis proposes the modeling and optimization of a hydrogen production and distribution network to industrial consumers in Portugal, aiming the optimization of the locations of each producer node, the technologies to be used in each stage of the network and the hydrogen flows exchange between producer and consumer nodes.As a methodology, economic data was collected and the most viable technologies for use were defined. In the modelling, a Mixed-Integer Linear Problem (MILP) was formulated to minimize the average final cost of hydrogen. In this model, scale economy evolutions are considered.The optimal structure for each scenario stipulated in the National Strategy for Hydrogen was analyzed, aligning the optimization of the network with the energy transition forecasted for Portugal. Economic comparisons were made between the average final cost of hydrogen with the natural gas price, as well as price and cost forecasts with increasing carbon tax. In addition, a sensitivity analysis of some input data was carried out, namely electricity price, water price and storage costs.Finally, it was concluded that, for the production of hydrogen as a raw material, Steam Methane Reforming (SMR) continues to be the favorite technology for the next, even with the increase in the price of natural gas and the carbon tax. As for “green hydrogen”, the reduction in investment and operating costs of PEM electrolysis will, in the near future, make this technology the most viable compared to alkaline electrolysis. Ammonia and dibenzyltoluene (DBT) will only be options for the transport of hydrogen over long distances and with an evolution of the economy of scale in the investment costs of the necessary infrastructure. Transport by pipeline with a hydrogen and natural gas mixture is the preferred method for distribution in Portugal due to the existing network and the amount transported being higher than the other means. Subsidizing “green hydrogen” production and distribution projects is the most instant way to make it competitive with natural gas, requiring a support of 83% and 95% for investment and operating costs, respectively. |
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| Autores principais: | Sousa, Vitor Hugo Rebelo de |
| Assunto: | hidrogénio gás natural Portugal consumidores industriais transição energética hydrogen natural gas Portugal industrial consumers energy transition |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Coimbra |
| Idioma: | português |
| Origem: | Estudo Geral - Universidade de Coimbra |
| Resumo: | This thesis proposes the modeling and optimization of a hydrogen production and distribution network to industrial consumers in Portugal, aiming the optimization of the locations of each producer node, the technologies to be used in each stage of the network and the hydrogen flows exchange between producer and consumer nodes.As a methodology, economic data was collected and the most viable technologies for use were defined. In the modelling, a Mixed-Integer Linear Problem (MILP) was formulated to minimize the average final cost of hydrogen. In this model, scale economy evolutions are considered.The optimal structure for each scenario stipulated in the National Strategy for Hydrogen was analyzed, aligning the optimization of the network with the energy transition forecasted for Portugal. Economic comparisons were made between the average final cost of hydrogen with the natural gas price, as well as price and cost forecasts with increasing carbon tax. In addition, a sensitivity analysis of some input data was carried out, namely electricity price, water price and storage costs.Finally, it was concluded that, for the production of hydrogen as a raw material, Steam Methane Reforming (SMR) continues to be the favorite technology for the next, even with the increase in the price of natural gas and the carbon tax. As for “green hydrogen”, the reduction in investment and operating costs of PEM electrolysis will, in the near future, make this technology the most viable compared to alkaline electrolysis. Ammonia and dibenzyltoluene (DBT) will only be options for the transport of hydrogen over long distances and with an evolution of the economy of scale in the investment costs of the necessary infrastructure. Transport by pipeline with a hydrogen and natural gas mixture is the preferred method for distribution in Portugal due to the existing network and the amount transported being higher than the other means. Subsidizing “green hydrogen” production and distribution projects is the most instant way to make it competitive with natural gas, requiring a support of 83% and 95% for investment and operating costs, respectively. |
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