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Principles of Sustainable Energy Systems, Second Edition, 2nd Edition
book

Principles of Sustainable Energy Systems, Second Edition, 2nd Edition

by Frank Kreith, Susan Krumdieck
August 2013
Intermediate to advanced content levelIntermediate to advanced
790 pages
30h 5m
English
CRC Press
Content preview from Principles of Sustainable Energy Systems, Second Edition, 2nd Edition
145Wind Energy
© 2008 Taylor & Francis Group, LLC
Sophisticated control systems required to point turbine blades into wind, prevent
overspeed conditions, etc.
Readers interested in more information on a variety of WT concepts are directed to [19,20].
3.5 Introduction to Wind Turbine Performance
A key performance measure in WT design is the coefcient of performance, C
p
, which is
a ratio of the aerodynamic power extracted by the WT, P
aero
, divided by the total power in
the wind, P
wind
, and is calculated as
C
P
P
P
AU
P
RU
p
aero
wind
aero aero
== =
12 12
32
3
//ρρ
π
(3.13)
The theoretical maximum turbine efciency was derived by Albert Betz in 1920 [21], as
wel
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Publisher Resources

ISBN: 9781466556966