Optimization of Energy Consumption of Pumping Equipment of the WPS by Selecting Modern Pumps
DOI:
https://doi.org/10.15802/stp2026/355081Keywords:
pumping station, energy consumption, pump selection, water supply, frequency controlAbstract
Purpose. Research to determine the optimal, from a technical and economic point of view, option for replacing pumping equipment using the example of the second-lift pumping station VNS–45, operated in the city of Kryvyi Rih. Methodology. The study was implemented in several stages: analysis of the actual operating mode of the station, comparison of technical characteristics of alternative pumps, construction of graphs of the combined operation of pumps with the system, statistical processing of results and assessment of practical value. This approach allowed to ensure the complexity of the analysis and reliability of the conclusions. The work used methods of hydraulic calculation, graphic modeling and analysis of the passport characteristics of pumps. All parameters were analyzed at an average daily water flow of 83.07 m3/h. The results of the study showed that the most effective are the Grundfos NB 65–200/198 and MVAe.65–200 A.1100 pumps, which provide a reduction in average monthly electricity consumption by more than 30% compared to the existing unit of the D320–50 type. Findings. The issues of excessive energy consumption by centralized water supply system facilities have been resolved. A significant part of the costs of utility companies is the operation of pumping equipment, which in most cases is technically outdated and operates outside the optimal operating mode and is energy inefficient. The results obtained can become the basis for further research in the direction of implementing automatic control systems based on variable pump rotation speeds and optimization algorithms. Originality. A scientifically based approach has been developed to modernize pumping equipment units, which in most cases are technically outdated and operate outside their optimal operating range, in order to increase energy efficiency. Practical value. The practical value of the research lies in the creation of a universal engineering model for the selection of pumping equipment for urban water supply systems, which does not require changing the hydraulic scheme or implementing complex control algorithms. The model can be applied to similar facilities without additional capital investments in engineering (pipeline) infrastructure.
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