PUMPS & TURBINES -- FLIP-SIDES OF HYDRAULIC MACHINES

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BASIC CONCEPTS OF HYDRAULIC MACHINES

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Same Theory For Pumps & Turbines

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Turbines: Reaction & Impulse Types

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Efficiency: Power Out vs Power In

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DIAGRAM OF PELTON WHEEL TURBINE

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THE WATER JET STRIKES THE BUCKETS

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A Little History: Lester A. Pelton

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Photo of Pelton Wheel Controls

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Photo of Our Pelton

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THE PRONY BRAKE

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Sketch of a Prony Brake

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Photo of Our Prony Brake

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Efficiency = Power 0ut by Machine/Power in by Water

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Most Efficient: Wheel Speed = Half Water Speed

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Equations You Might Use During Experiment

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First Select Your Total Head (For All Runs)

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Span The Range Of RPM At Each Flow Rate

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You Can Check Results As You Go

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For Graphic Results A Constant Total Head Is Needed

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I Usually Add Some Zero Efficiency Points For Graphing

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What Should An Efficiency Graph Look Like?

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End of Pelton Wheel Experiment

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