The energy – pressure nexus in the water supply system

Abstract

Due to the importance of overall sustainable development, efficient energy management should be as significant as water resource management within every water supply system. The pressure reduction, as a measure for the decrease in losses, not only guarantees less leakage but also minimizes energy consumption. The relationship between energy consumption and pressure in water supply systems has been the subject of many previous studies, mainly based on measurements in real systems. However, a methodology for beforehand assessment of energy savings which occur due to the pressure reduction, has not been proposed yet. The paper proposed a method for the assessment of energy savings in relation to pressure reduction, implemented it on the hypothetical water supply system and verified it on the real system. Results led to the conclusion that the proposed methodology can be considered as a successful tool for better energy and water management. It enables water utility management to estimate energy saving in water supply system in advance, based on the hydraulic model of the system.

Avaliação dos Impactos Econômicos do Novo Sistema de Captação de Água para Abastecimento Público da Sede do Município de Governador Valadares-MG

“…Fortes (2016) afirma que as despesas com energia tendem a ser uma das mais representativas em relação aos custos totais de operação, precedidas apenas pelos custos com pessoal. Para Cipranic et al (2021), o consumo de energia nos SAAs, associado ao índice de perdas na distribuição, torna ainda mais desafiadora a gestão das empresas prestadoras do serviço.…”