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Este estudo aborda a temática da eficiência hídrica, procurando encontrar soluções para um uso mais eficiente da água na Residência Gulbenkian do Instituto Politécnico de Bragança. Para tal, foram criadas três opções com medidas técnicas e posteriormente foi analisada a viabilidade técnica e económica em cada opção.
Na opção 1, a qual agrupa três cenários, houve uma abordagem referente à instalação de redutores de caudal nos dispositivos de utilização presentes nas instalações sanitárias (chuveiros) e na cozinha do edifício (torneira). Na opção 2, composta por quatro cenários, as medidas de intervenção seguem a linha de raciocínio da substituição dos dispositivos de utilização existentes (chuveiros e torneiras), por outros mais eficientes. A opção 1 e 2 mostram-se técnica e economicamente viáveis para serem implementadas e através da combinação de cenários destas duas opções, estima-se ser possível alcançar uma poupança no consumo anual de água de cerca de 37,7%, com um período de retorno do investimento de apenas um mês, refletindo ao final do primeiro ano uma poupança acumulada de cerca de 1.525,58 €.
A opção 3, de aproveitamento de águas pluviais para abastecimento de autoclismos de bacias de retrete e fluxómetros de mictórios, revela-se pouco significativa, pois requer um elevado investimento inicial, para se alcançar apenas uma poupança de cerca de 9,05% no consumo anual de água.
Desta forma, a implementação de algumas destas medidas técnicas, para um uso mais eficiente da água no edifício, poderá trazer benefícios económicos para o Instituto Politécnico de Bragança e contribuir para a diminuição do risco de escassez hídrica na sub-região de Terras de Trás-os-Montes de Portugal.
This study focuses on the theme of water efficiency, seeking to find solutions for a more efficient use of water in the Gulbenkian Residence of the Polytechnic Institute of Bragança. To this end, three options were created with technical measures and subsequently the technical and economic feasibility of each option was analyzed. In option 1, which groups three scenarios, there was an approach related to the installation of flow reducers in the devices used in the sanitary facilities (showers) and in the building's kitchen (tap). In option 2, composed by four scenarios, the intervention measures follow the line of reasoning for the replacement of the existent devices (showers and taps) with more efficient ones. Options 1 and 2 are technically and economically feasible to be implemented and through the combination of scenarios of these two options, it is estimated that it is possible to achieve savings in annual water consumption of around 37.7%, with a return time of investment of just one month, reflecting at the end of the first year an accumulated savings of around € 1,525.58. Option 3, for the use of rainwater to supply flushing cisterns and urinals, proves to be insignificant, as it requires a high initial investment, in order to achieve only savings of around 9.05% in water annual consumption. In this way, the implementation of some of these technical measures, for a more efficient use of water in the building, could bring economic benefits to the Polytechnic Institute of Bragança and contribute to reducing the risk of water scarcity in the sub-region of Terras de Trás-os-Montes of Portugal.
This study focuses on the theme of water efficiency, seeking to find solutions for a more efficient use of water in the Gulbenkian Residence of the Polytechnic Institute of Bragança. To this end, three options were created with technical measures and subsequently the technical and economic feasibility of each option was analyzed. In option 1, which groups three scenarios, there was an approach related to the installation of flow reducers in the devices used in the sanitary facilities (showers) and in the building's kitchen (tap). In option 2, composed by four scenarios, the intervention measures follow the line of reasoning for the replacement of the existent devices (showers and taps) with more efficient ones. Options 1 and 2 are technically and economically feasible to be implemented and through the combination of scenarios of these two options, it is estimated that it is possible to achieve savings in annual water consumption of around 37.7%, with a return time of investment of just one month, reflecting at the end of the first year an accumulated savings of around € 1,525.58. Option 3, for the use of rainwater to supply flushing cisterns and urinals, proves to be insignificant, as it requires a high initial investment, in order to achieve only savings of around 9.05% in water annual consumption. In this way, the implementation of some of these technical measures, for a more efficient use of water in the building, could bring economic benefits to the Polytechnic Institute of Bragança and contribute to reducing the risk of water scarcity in the sub-region of Terras de Trás-os-Montes of Portugal.
Descrição
Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
Palavras-chave
Eficiência hídrica Residência de estudantes Viabilidade técnico-económica