Bruna Rorato Rocha
Wednesday, June 6
4:00 PM – 5:30 PM
Water supply is an energy intensive activity, consuming between 2 and 3% of the world's energy, more than 70% of which is used in the distribution system. The present work analyzed the feasibility of the use of tanks to minimize electricity costs in the operation of Water Supply Systems, taking into account the hourly variation of the electric energy tariff. A feasibility analysis of the use of tanks in a water distribution network was performed, varying the dimensions and the location of the tanks. A case study was performed using the EPANET software to analyze part of the distribution network in Curitiba, Brazil, with 1476 nodes, 1681 pipes, one reservoir and two pumps, which in the original configuration operates with 1318 annual low pressure events. The decrease in energy costs is due to the operation of the partial pumps during the peak hours, when the energy cost is higher. The installation of RNVs also provides better control of pressures, better supply of demand and reduction of risks of pipe ruptures. A solution search algorithm was developed to investigate alternative location and geometry of RNVs, as well as system operating rules. It was concluded that there are solutions that lead to the reduction of expenses of the order of 20% and whose return periods are feasible (up to 4 years). Installing RNVs can be a lucrative investment, freeing up funds for development of new technologies and improvements in the system, generating benefits for the population supplied and the utility company.
Asset Management Consultant
Chair, Graduate Program in Environmental Management
Maurício Dziedzic, Ph.D., Prof., Member of the ASCE
Civil Engineering at Universidade Federal do Paraná (1986).
M.A.Sc. in Water Resources and Hydraulic Engineering at Universidade Federal do Paraná (1988).
Ph.D. in Civil Engineering, Fluid Mechanics and Hydraulics - University of Toronto (1994).
Currently, Professor at Universidade Positivo, where he chairs the Graduate Program in Environmental Management (MSc and PhD). Conducted the implementation of the undergraduate program in Civil Engineering at Universidade Positivo. Has experience in water quality modeling, hydraulic engineering, fluid mechanics, greenhouse gas inventory, air quality modeling, life cycle analysis, design of hydraulic laboratory equipment, dam break analysis, environmental indicators, and faculty development. Currently engaged in research on hydrodynamic and water quality modeling in reservoirs, water loss in distribution networks, optimization in water distribution networks, hydraulic micro generation, urban drainage and flood control, environmental impact assessment, and environmental indicators. Has also conducted program and institutional assessments for the Brazilian ministry of education.
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