Next Article in Journal
Development of an Integrated Modelling System for Evaluating Water Quantity and Quality Effects of Individual Wetlands in an Agricultural Watershed
Next Article in Special Issue
Cost-Optimal Flexibilization of Drinking Water Pumping and Treatment Plants
Previous Article in Journal
Nonstationary Multivariate Hydrological Frequency Analysis in the Upper Zhanghe River Basin, China
Previous Article in Special Issue
Calculating the Economic Level of Friction in Pressurized Water Systems
Open AccessArticle

Improved Assessment of Energy Recovery Potential in Water Supply Systems with High Demand Variation

CERIS, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Water 2018, 10(6), 773; https://doi.org/10.3390/w10060773
Received: 31 March 2018 / Revised: 5 June 2018 / Accepted: 11 June 2018 / Published: 13 June 2018
Enhancing energy efficiency of water supply systems by recovering part of the excessive pressure is currently an issue of growing interest for water companies. The installation of micro hydro plants for energy recovery can be profitable in sites with excessive pressure, though requiring proper technical and economical evaluation. This paper presents a methodology for assessing the energy recovery potential in water supply systems under high seasonal demand variation. The methodology is based on the calculation of head and flow rate conditions that maximize energy production for a specific energy recovery technology, given available head and flow rate ranges. The methodology is applied to the inlet of a storage tank of a water transmission system using hourly collected data over one year. Results show that, in systems of high variability of flow rate, the installation of turbomachines in parallel is necessary for maximizing energy recovery and that the developed methodology returns lower, but more realistic, energy production estimates than other approaches based on average head and flow rate data. View Full-Text
Keywords: energy recovery; assessment methodology; energy efficiency; water transmission systems energy recovery; assessment methodology; energy efficiency; water transmission systems
Show Figures

Figure 1

MDPI and ACS Style

Monteiro, L.; Delgado, J.; Covas, D.I.C. Improved Assessment of Energy Recovery Potential in Water Supply Systems with High Demand Variation. Water 2018, 10, 773.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop