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- Q1570027 subject Q7138877.
- Q1570027 abstract "Betz's law indicates the maximum power that can be extracted from the wind, independent of the design of a wind turbine in open flow. It was published in 1919, by the German physicist Albert Betz. The law is derived from the principles of conservation of mass and momentum of the air stream flowing through an idealized "actuator disk" that extracts energy from the wind stream. According to Betz's law, no turbine can capture more than 16/27 (59.3%) of the kinetic energy in wind. The factor 16/27 (0.593) is known as Betz's coefficient. Practical utility-scale wind turbines achieve at peak 75% to 80% of the Betz limit.The Betz limit is based on an open disk actuator. If a diffuser is used to collect additional wind flow and direct it through the turbine, more energy can be extracted, but the limit still applies to the cross-section of the entire structure.".
- Q1570027 thumbnail Betz-tube.svg?width=300.
- Q1570027 wikiPageExternalLink cp.htm.
- Q1570027 wikiPageWikiLink Q1366187.
- Q1570027 wikiPageWikiLink Q1376201.
- Q1570027 wikiPageWikiLink Q1453055.
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- Q1570027 wikiPageWikiLink Q4143497.
- Q1570027 wikiPageWikiLink Q460727.
- Q1570027 wikiPageWikiLink Q46276.
- Q1570027 wikiPageWikiLink Q4718988.
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- Q1570027 wikiPageWikiLink Q60052.
- Q1570027 wikiPageWikiLink Q65705.
- Q1570027 wikiPageWikiLink Q7138877.
- Q1570027 wikiPageWikiLink Q815820.
- Q1570027 comment "Betz's law indicates the maximum power that can be extracted from the wind, independent of the design of a wind turbine in open flow. It was published in 1919, by the German physicist Albert Betz. The law is derived from the principles of conservation of mass and momentum of the air stream flowing through an idealized "actuator disk" that extracts energy from the wind stream. According to Betz's law, no turbine can capture more than 16/27 (59.3%) of the kinetic energy in wind.".
- Q1570027 label "Betz's law".
- Q1570027 depiction Betz-tube.svg.