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| Braytoncykeln× | Effectiveness-NTU-metoden× | |
|---|---|---|
| Ämnesområde | Termodynamik | Termodynamik |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1873 | 1984 |
| Upphovsperson≠ | George Brayton | William Kays and Alvin London |
| Typ≠ | Thermodynamic cycle | Heat transfer correlation |
| Ursprungskälla≠ | Moran, M. J., Shapiro, H. N., Boettner, D. D., & Bailey, M. B. (2014). Fundamentals of Engineering Thermodynamics (8th ed.). Wiley. ISBN: 978-1118412947 | Kays, W. M., & London, A. L. (1984). Compact Heat Exchangers (3rd ed.). McGraw-Hill. ISBN: 978-0070334007 |
| Alias | Joule cycle, gas turbine cycle | epsilon-NTU method, effectiveness method |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | The Brayton Cycle (also called Joule Cycle) describes the thermodynamic process in gas turbines and jet engines. It consists of four processes: isentropic compression in a compressor, isobaric combustion (heat addition), isentropic expansion in a turbine, and isobaric heat rejection. The Brayton Cycle is the foundation for analyzing aircraft propulsion, ground-based power generation, and simple-cycle gas turbine plants. | The Effectiveness-NTU method is an alternative approach to heat exchanger analysis that measures thermal performance relative to the theoretical maximum possible heat transfer. It is particularly powerful for design problems where outlet temperatures are unknown. The method uses effectiveness (ratio of actual to maximum possible heat transfer) and NTU (Number of Transfer Units, a dimensionless parameter related to overall heat transfer area) to characterize heat exchanger performance. |
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