The impact of eco-energy design in energy consumption of water pumping plants

Contemporary globalized existence necessitates an unavoidable escalation in energy consumption within the newly industrialized context. Optimized solutions for energy consumption represent the most effective strategies to mitigate the environmental repercussions associated with energy production. In the present study, the mathematical modeling of various pumping facilities, incorporating both two and three centrifugal pumps configured in parallel connections, is executed within the MATLAB/Simulink environment, with an in-depth analysis conducted across 1720 operational points. A minimum enhancement of 10 percent in efficiency is realized by employing variable speed control for all pumps in contrast to the conventional constant speed control methodology. In pumping facilities featuring a dual-pump configuration, it is recommended to engineer the system to operate at a flow share percentage of 55 to 60, alongside implementing constant speed regulation for the primary pump and variable speed modulation for the auxiliary shaver pump, in order to attain enhanced efficiency rates approximating 75 percent and a reduced payback period due to the diminished size of the shaver pump's variable frequency drive (VFD). In pumping systems comprising three parallel pumps, the application of constant speed regulation for the primary pump coupled with variable speed modulation for the additional pumps is advocated, owing to the resultant decrease in initial capital expenditures and a more expedited return on investment, alongside diminished maintenance requirements, relative to the scenario involving variable speed control for both the primary and secondary pumps.