A pump lifts 93,600 litres of water per hour against a total head of 21 meters. Compute the water horse power. If the pump has an efficiency of 72%, what size prime mover is required to operate the pump. If a direct drive electric motor having an efficiency of 80% is used to operate the pump, compute the cost of electrical energy in a month of 30 days. The pump is operated for 12hours daily for 30 days. The cost of electrical energy is 50 paise per unit.
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26.1 Calculation of Power Requirement for a Pumping System
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