Water science and engineering | VOL. 3
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Energy efficiency in a water supply system: Energy consumption and CO2 emission

Publication Date Sep 1, 2010

Abstract

This paper presents important fundamentals associated with water and energy efficiency and highlights the importance of using renewable energy sources. A model of multi-criteria optimization for energy efficiency based on water and environmental management policies, including the preservation of water resources and the control of water pressure and energy consumption through a hybrid energy solution, was developed and applied to a water supply system. The methodology developed includes three solutions: (1) the use of a water turbine in pipe systems where pressures are higher than necessary and pressure-reducing valves are installed, (2) the optimization of pumping operation according to the electricity tariff and water demand, and (3) the use of other renewable energy sources, including a wind turbine, to supply energy to the pumping station, with the remaining energy being sold to the national electric grid. The use of an integrated solution (water and energy) proves to be a valuable input for creating benefits from available hydro energy in the water supply system in order to produce clean power, and the use of a wind source allows for the reduction of energy consumption in pumping stations, as well as of the CO2 emission to the atmosphere.

Concepts

Water Supply System Environmental Management Policies Renewable Energy Sources Hybrid Energy Solution Electricity Tariff Pumping Station Hydro Energy Preservation Of Water Resources National Electric Grid Energy

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