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Published byDarlene Marshall Modified over 9 years ago
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Scott Craig Cody Maher Jesse Ross Brian Vanstratum
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Mean velocity is typically 85% of surface velocity for turbulent flow[4] When flow is turbulent, v s = v mean
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Typical Energy Use of Small Household = 1000 kWhr
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Kaplan Crossflow Our Situation Head Flow
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Reaction turbine (low head, high flow) Propeller type turbine with variable angle fins Operates with as little as two feet of head Optimized for installation site (expensive) Greater than 90% efficiency (less in low head applications)
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Hybrid reaction/impulse turbine Performs well over wide range of heads 70-80% efficiency Significantly lower cost than Kaplan (~10%)
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Kaplan Crossflow Our Situation Head Flow
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1. USGS Georgia Water Information Network (GWIN), National Water Resources 2.Layman’s Guidebook on How to Develop a Small Hydro Site, European Small Hydro Association (ESHA) 3.Dr. Wenrui Huang, P.E. Associate Professor Ph.D. Hydraulics 4.Smout, Ian. Discharge Measurements and Estimates, Loughborough University Leicestershire, UK 5.http://en.wikipedia.org/wiki/Image:Kraftwerk_Wallsee- Mitterkirchen_Querschnitt_Krafthaus.jpg 6.http://en.wikipedia.org/wiki/Crossflow_turbine
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