Possibilities for increasing energy and hydraulic efficiency in water supply systems

National University of Architecture and Construction of Armenia, Yerevan, Armenia

^* Corresponding author: sahakyan.aram@nuaca.am

Abstract

The article touches upon modern approaches to increasing the efficiency of water supply systems intended for drinking and economic needs. In particular, the problem of the possibility of converting the available hydraulic energy into electrical energy on the drinking water gravity aqueducts without disturbing the hydraulic regime of the system is observed. The presented example of the proposal introduction entailed the energy-economic indicators in the water supply systems of Yerevan, the Republic of Armenia. According to calculations, the amount of electricity produced by the proposed small hydropower plants (SHPP) on the aqueducts feeding Yerevan City can be at least 105 million kW per year, which exceeds the amount of electricity currently consumed in the water supply system for more than 3 times. In order to increase the energy and hydraulic efficiency of water supply systems, it has also been proposed to establish an appropriate performance indicator, the application of which will create an obligation for water supply organizations to make investments in the indicated area. The energy efficiency and loss reduction alternatives analyzed in the work can serve as an opportunity for decreasing the dependence of water supply systems on external energy sources and reducing operating costs.