Labeling Water Transport Efficiencies

Abstract

Pressurized Water Transport Systems (PWTSs) are responsible for a large percentage of the electricity consumption around the world, and current trends suggest that this proportion will continue to increase in the future. Controlling PWTS is therefore fundamental, including improving efficiency when necessary or compulsory. To achieve this, metrics to objectively assess the efficiency of the different losses and of the whole system are needed. These metrics, based on economic criteria, will be stricter if environmental costs are added to current water and energy costs. To assess different improvement strategies, some relative metrics, applied to both operational and structural losses, are considered. At the end, taking into account their relevance, these metrics are combined in a global energy score (IS), this being the main contribution of this paper. Finally, to focus on the concepts and methodology, a simple case study is presented.

El transporte de agua a presión y su certificación energética. La herramienta ENERGOS

“…En una etapa posterior se debería abordar la certificación de las redes, sistemas en los que, al alimentar simultáneamente puntos ubicados en cotas distintas, aparece la energía topográfica, más compleja de tipificar (Cabrera et al, 2015). De momento, la calificación propuesta se centra en los sistemas simples (como los bombeos de aguas subterráneas) y más adelante, tras esta experiencia, se haría una propuesta concreta para los sistemas complejos en los que la principal dificultad está en cómo ponderar la energía topográfica con las ineficiencias operacionales (Gómez et al, 2018).…”

Theoretical Estimation of Energy Balance Components in Water Networks for Top-Down Approach

“…Cabrera et al [10] presented one of the first energy audit methods for water networks based on the modelling of physical processes. Over the past decade, more complex and comprehensive methods have been developed for energy balance and assessment based on physical processes to evaluate energy transformation and efficiency in water supply systems [11][12][13][14][15][16][17][18][19][20][21][22]. In addition, there are successful energy assessments of real networks based on physical processes in many countries [19][20][21][22][23][24][25][26][27].…”