Performance Evaluation of Pressure Head Loads on Electrical Pump Sets: an Accurate Measurement of the Pumping Efficiency

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ABSTRACT

Experiment on performance evaluation of water lifting pump .The study was undertaken to determine the performance of submersible pump set of 15HP and mono-block centrifugal pump set of 5 HP to develop characteristic curves of and its operating conditions. The results revealed that Submersible pump the maximum all over pump set efficiency was found 54.98 % at working head 40.43 m, discharge equal to 24.10 lps, Water Horse Power 12.99 and input Horse Power 23.63, it was operating point of pump. More than 50 % efficiency can be achieved with discharge capacity variation between 24.10 to 17.89 lps at total head variation between 40.43 m to 52.16 m. While in Mono-block centrifugal pump testing was done for suction lifts 0.5 m, 0.7 m, 1.6 m and 2.5m, the maximum efficiency was found 75.10 % at 0.7 m suction lift and at 29.34 m head under same static lift minimum efficiency was found 47.94 % at 16.58 m head. As more than 20 m head was not advisable, also under 0.7 m suction lift more than 17 m head may create cavitation. So, operating head may be adopted 17 m against this head maximum efficiency is 48 %, discharge 11.9 lps and 5.5 HP. Also compromise with slight possible cavitation at 20 m head 60 % efficiency can be achieved it was optimum operating point of mono block pump

KEYWORDS

Suction lifts, Pump Efficiency, Francis formula, Submersible Pump, Mono Block Pump

Cite this paper

Patel Vedant C, P. B. Vekariya. (2020) Performance Evaluation of Pressure Head Loads on Electrical Pump Sets: an Accurate Measurement of the Pumping Efficiency. International Journal of Agricultural Science, 5, 152-163