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Energa Elica
Lic. Juan Aguirre
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Albert Betz (1885-1968), a German physicistnoted for his path-breaking theoreticalstudies of wind turbines. Betz' Law (1919)
states that a wind turbine can convert 16/27(or 59%) of the kinetic energy in the wind tomechanical energy
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S
P[W/m2]
V[m/Seg]
Potencia en una masa de aire en movimiento
S
P[W/m2]
V[m/Seg]
Ecinetica m= 1
2
V2
m S= V
3VS2
1= Po
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Componente Error tpico
%
Calibracin en el tnel de viento 0.3% 3.0%
Seleccin de anemmetro 0.5% 4.0%
Montaje de anemmetro 0.2% 3.0%
Seleccin del sitio a medir 0.5% 5.0%
Seleccin del periodo de medicin 0.3% 3.0%
Error en el almacenaje de datos y evaluacin 0.0% 2.0%
Correlacin a largo plazo 0.5% 5.0%
Transposicin de datos a diferentes alturas y sitios 1.0% 10.0%
Incertidumbre total 1.5% 14.0%
Incertidumbre en el pronostico de energa 3.0% 30.0%
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Funcion de Weibull Curva caracteristica
La energa del viento
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2
2
2
2
vSupwCW
vSupa
CA
=
=
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Widerstandslufer haben eine Schnelllaufzahl von maximal 1.
Das heit, das Blatt kann sich hchstens so schnell bewegenwie der Wind. Dadurch hat ein Widerstandslufer auch einen
geringen Leistungsbeiwert (cP.W,max = 19%) und wird daher nicht
zur kommerziellen Stromgewinnung verwendet.
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