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Hydropower !. Rowan University Freshman Clinic Fall 2003. Objectives of Module. Learn about energy conversion Learn about unit conversions Understand the differences between force, work, and power Assemble a turbine, measure dimensions Document the tests neatly in your lab books
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Hydropower ! Rowan University Freshman Clinic Fall 2003
Objectives of Module • Learn about energy conversion • Learn about unit conversions • Understand the differences between force, work, and power • Assemble a turbine, measure dimensions • Document the tests neatly in your lab books • Test the turbine: measure time to lift weights • Have fun!
Examples of Hydropower Itaipu Dam, Peru: Largest hydro plant in world – 12,600 MW ! Hydroelectric Turbine
Hydroelectric Generators Kaplan Turbine Computer simulation of flow through turbine
Energy Conversion • Water stored at a high elevation has Potential Energy • Water released, gains Kinetic Energy • Water motion transferred to turbine; converted to Mechanical Energy • Turbine motion converted to Electrical Energy
Upper Reservoir Overflow line Pulley Mass Penstock Refill line Turbine Ball valve Pump Lower Reservoir ExperimentalSetup
Force, Work, and Power • Force: F = m*a • F = force, Newtons (kg-m/s2) • m = mass (kg) • a = acceleration (m/s2) • Weight – a special force: w = m*g • w = weight (N) • g = gravitational acceleration, 9.81 m/s2
Force, Work, and Power • Work = force * distance = F*D • W = work, Newton-meters (N-m = kg*m2/s2) • F = force (Newtons) • D = distance (meters) • Power = Work per time = W/t • P = power, Watts (W, kg*m2/s3) • W = work (N-m) • t = time (seconds)
What We’ll Do • Break into groups • Assign responsibilities within groups • Start recording in lab book; use format suggested in handout • Build turbine, measure dimensions • Sketch turbine in lab book • Test it !
Things You’ll Measure • Mass of weight to be lifted • Distance to raise mass • Time to lift mass • Calculate: • Force (weight) • Work • Power
Deliverables (what to turn in) • TODAY: • Carbon copies from lab notebook • Title of module • Team members & assigned roles • Section number • Today’s date • Purpose of lab • Brief description of procedure • Sketch of your turbine • Table of data & preliminary results • Plot of Time to Raise Mass and Power Output vs. Mass
Deliverables (what to turn in) • NEXT WEEK: • Work in your groups ! • Lab Report • Use Freshman Clinic Laboratory Report Format • Format description, example, and grading scheme can be found on Freshman Clinic web site: http://engineering.rowan.edu/~orlins/fc/