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Abstract(s)
O aumento dos custos associados ao consumo de energia e o crescimento da tecnologia LED, aplicado à iluminação, tem vindo a fomentar o desenvolvimento de luminárias LED cada vez mais eficientes, permitindo aos decisores optarem pela transição das luminárias de tecnologia convencional por tecnologia LED. Dada a relevância desta temática, a presente dissertação tem como objetivo o estudo da transição energética aplicado à iluminação pública das autoestradas, tendo como caso de estudo as autoestradas A27 e A28. Tem como objetivo determinar as melhores estratégias para potenciar a eficiência energética, mantendo o conforto e a segurança dos utilizadores. De modo a alcançar os respetivos objetivos, serão necessários realizar alguns estudos de cariz mais técnico e económico, através da realização de estudos luminotécnicos e de estudos de viabilidade económica das soluções apresentadas. O caso de estudo apresentado será referente a um período de 20 anos, de modo a avaliar os ganhos obtidos a longo prazo, com a transição energética das luminárias. As poupanças geradas com a substituição das luminárias de VSAP para LED, são a redução do consumo energético em cerca de 58%, correspondente a 629 MWh/ano, com uma redução próxima de 120 000 € anuais na fatura de energia e uma redução de emissões de CO2 de 295 toneladas. Em termos de custos de manutenção, ao fim de 20 anos estas poderão gerar poupanças na ordem dos 470 000 €. No estudo económico-financeiro efetuado para o período de 20 anos, obteve-se uma TIR de 12 %, um VAL próximo dos 800 000€, sendo o investimento recuperado (Payback Period) nos primeiros 6 anos e 2 meses aproximadamente, sendo que o projeto apresenta uma taxa de rentabilidade de 1,16.
The increase in costs associated with energy consumption and the growth of LED technology, applied to lighting, has fostered the development of increasingly efficient LED luminaires, allowing decision-makers to opt for the transition from conventional luminaires to LED technology. Given the relevance of this theme, this dissertation aims to study the energy transition applied to public lighting on highways, taking the A27 and A28 highways as a case study. Its objective is to determine the best strategies to enhance energy efficiency, while maintaining user comfort and safety. To achieve the respective objectives, it will be necessary to carry out some studies of a more technical and economic nature, by carrying out lighting studies and economic feasibility studies of the solutions presented. The case study presented will refer to a period of 20 years, to evaluate the gains obtained in the long term, with the energy transition of the luminaires. The savings generated with the replacement of VSAP luminaires for LED, are the reduction of energy consumption by around 58%, corresponding to 629 MWh/year, with a reduction of close to 120 000 € per year in the energy bill and a reduction in emissions of CO2 of 295 tons. In terms of maintenance costs, after 20 years they could generate savings of around €470,000. In the economic-financial study carried out for a period of 20 years, an IRR of 12% was obtained, a NPV close to €800,000, with the investment being recovered (Payback Period) in the first 6 years and 2 months approximately, and the project has a rate of return of 1.16.
The increase in costs associated with energy consumption and the growth of LED technology, applied to lighting, has fostered the development of increasingly efficient LED luminaires, allowing decision-makers to opt for the transition from conventional luminaires to LED technology. Given the relevance of this theme, this dissertation aims to study the energy transition applied to public lighting on highways, taking the A27 and A28 highways as a case study. Its objective is to determine the best strategies to enhance energy efficiency, while maintaining user comfort and safety. To achieve the respective objectives, it will be necessary to carry out some studies of a more technical and economic nature, by carrying out lighting studies and economic feasibility studies of the solutions presented. The case study presented will refer to a period of 20 years, to evaluate the gains obtained in the long term, with the energy transition of the luminaires. The savings generated with the replacement of VSAP luminaires for LED, are the reduction of energy consumption by around 58%, corresponding to 629 MWh/year, with a reduction of close to 120 000 € per year in the energy bill and a reduction in emissions of CO2 of 295 tons. In terms of maintenance costs, after 20 years they could generate savings of around €470,000. In the economic-financial study carried out for a period of 20 years, an IRR of 12% was obtained, a NPV close to €800,000, with the investment being recovered (Payback Period) in the first 6 years and 2 months approximately, and the project has a rate of return of 1.16.
Description
Keywords
Iluminação Pública Luminárias LED Luminárias VSAP Eficiência Energética Estudo Luminotécnico Estudo de Viabilidade Económica Public Lighting LED Luminaire VSAP Luminaire Energy Efficiency Lighting Study Economic Feasibility Study