Abstract
Background For the energy efficiency of a centrifugal pump, maintaining and improving the efficiency is the main task of operating organizations. The amount of electricity paid for the drive for individual industries reaches almost 85 % of the total cost of electricity. During operation it is necessary to analyze the actual pressure and energy characteristics of pumps and improve these indicators by the developed measures. Aims and Objectives Determine the deviations causes in the centrifugal pump energy characteristics from the passport values by calculating the operation parameters using the example of the main pump NM 1250-260. Investigate defects affecting the pumping equipment quality. Conduct effectiveness analysis of special polymeric materials on the impellers flowing part surface. Results A method for reducing hydraulic losses along the pump impeller channels length is proposed. The efficiency of the impeller flowing parts treatment with a polymer coating is shown, and the annual energy savings as a result of increasing the pump efficiency is calculated.
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