Author(s): Loïc Olfatto; João Delgado; Elena Vagnoni; Cécile Münch-Alligné; François Avellan
Linked Author(s): François Avellan
Keywords: Energy harvesting; Picohydropower; Efficiency; Hermite polynomials
Abstract: Existing water utility networks provides a wide, distributed and unexploited hydropower potential. The installation of energy recovery stations on existing infrastructures limits both the required investment and the environmental impact. The counter-rotating runners micro-turbine presented in this paper is a new technology dedicated to the harvesting of energy on drinking water network. An analytical model of the machine’s efficiency–the so-called hill chart–is used to investigate the runners’speeds command laws that maximize the recovered energy on the wide range of consumerdriven flow discharge experienced on water utilities.