Porovnat metody
Prohlédněte si vybrané metody vedle sebe; řádky, které se liší, jsou zvýrazněny.
| Betzův limit× | Rankinův cyklus× | |
|---|---|---|
| Obor | Termodynamika | Termodynamika |
| Rodina | Process / pipeline | Process / pipeline |
| Rok vzniku≠ | 1920 | 1859 |
| Tvůrce≠ | Albert Betz | William John Macquorn Rankine |
| Typ≠ | Theoretical limit | Thermodynamic cycle |
| Původní zdroj≠ | Betz, A. (1920). Das Maximum der theoretisch möglichen Ausnützung des Windes durch Windmotoren. Zeitschrift für das gesamte Turbinenwesen, 26, 307-320. link ↗ | Smith, J. M., Van Ness, H. C., & Abbott, M. M. (2005). Introduction to Chemical Engineering Thermodynamics (7th ed.). McGraw-Hill. ISBN: 978-0071247009 |
| Další názvy≠ | Lanchester-Betz limit, wind turbine efficiency limit | Clausius-Rankine cycle, steam cycle, vapor power cycle |
| Příbuzné | 3 | 3 |
| Shrnutí≠ | The Betz Limit states that no wind turbine can extract more than 59.3% of the kinetic energy from flowing wind, regardless of design. This fundamental thermodynamic limit arises because extracting energy slows the wind, which then blocks further energy extraction. Albert Betz derived this limit in 1920 from momentum and energy conservation. Modern wind turbines achieve 35-45% efficiency, approaching this theoretical maximum. | The Rankine Cycle is the fundamental thermodynamic cycle for steam power plants. It describes how thermal energy from burning fuel or concentrated solar radiation is converted to mechanical work and ultimately electricity. The cycle consists of four processes: isobaric heat addition in the boiler, isentropic expansion through the turbine, isobaric heat rejection in the condenser, and isentropic compression by the pump. |
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