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Hydroelectric Energy - Lecture Slides | ELT 290, Study notes of Electrical and Electronics Engineering

Material Type: Notes; Class: Topics in ELT: Overview of Alternative Energy Resources (Solar, Wind and Hydroelectric); Subject: Electronic/Computer Technology; University: Oakton Community College; Term: Spring 2009;

Typology: Study notes

Pre 2010

Uploaded on 08/04/2009

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Hydroelectric Energy
Version 0.4
April 24, 2009
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Hydroelectric Energy

Version 0. April 24, 2009

Presentation Outline

 History  Basic Principles  Turbine Types  Specification & Sizing

History

 Since ancient times used in grainaries  Starting in 1880’s many converted to generating electricity  By 1889 there were 200 plants  Provided 25% of US power by 1920

Old Water Wheel

Hoover Dam

Basic Principles

Basic Power Equation

Hydroelectric Installation

Diverting a Stream

Basic Micro Hydropower System

Basic Turbine Types

 Impulse  Reaction

Impulse Turbines

 Turbine spins as a result of a jet of water impacting the buckets on a wheel  Requires a high head pressure  Lower flow rate requirement  80 to 95% efficiency

Pelton Turbine Wheel

Pelton Turbine w/Permamagnet

Generator