Scott Craig Cody Maher Jesse Ross Brian Vanstratum
Mean velocity is typically 85% of surface velocity for turbulent flow[4] When flow is turbulent, v s = v mean
Typical Energy Use of Small Household = 1000 kWhr
Kaplan Crossflow Our Situation Head Flow
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)
Hybrid reaction/impulse turbine Performs well over wide range of heads 70-80% efficiency Significantly lower cost than Kaplan (~10%)
Kaplan Crossflow Our Situation Head Flow
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. Mitterkirchen_Querschnitt_Krafthaus.jpg 6.