000			01923nab a2200193 4500
005			20260520001038.0
008			260224s2008 xxu
245	0	0	_aHybrid solution and pump-storage optimization in water supply system efficiency: A case study
260			_a _b _cnov. 2008
270			_a23/06/2011 ; 23/06/2011
300			_a7 p. ; 4142-4148
520			_aTranscripción del resumen del autor. Environmental targets and saving energy have become ones of the world main concerns over the last years and it will increase and become more important in a near future. The world population growth rate is the major factor contributing for the increase in global pollution and energy and water consumption. In 2005, the world population was approximately 6.5 billion and this number is expected to reach 9 billion by 2050 [United Nations, 2008. www.un.org, accessed on July]. Water supply systems use energy for pumping water, so new strategies must be developed and implemented in order to reduce this consumption. In addition, if there is excess of hydraulic energy in a water system, some type of water power generation can be implemented. This paper presents an optimization model that determines the best hourly operation for 1 day, according to the electricity tariff, for a pumped storage system with water consumption and inlet discharge. Wind turbines are introduced in the system. The rules obtained as output of the optimization process are subsequently introduced in a hydraulic simulator, in order to verify the system behaviour. A comparison with the normal water supply operating mode is done and the energy cost savings with this hybrid solution are calculated. Keywords: Pump-storage; Energy efficiency; Water supply systems
581			_a11
773	0		_tEnergy Policy _g36
942			_cARTICULO
100	1		_aVieira, F. _950391
100	1		_aRamos, H.M. _950392
999			_c183034 _d183034