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	ブレイтонサイクル	熱交換器の熱性能を、理論的に可能な最大熱伝達に対する比率で測定する代替アプローチであるEffectiveness-NTU法。
分野	熱力学	熱力学
系統	Process / pipeline	Process / pipeline
提唱年	1873	1984
提唱者	George Brayton	William Kays and Alvin London
種類	Thermodynamic cycle	Heat transfer correlation
原典	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
別名	Joule cycle, gas turbine cycle	epsilon-NTU method, effectiveness method
関連	3	3
概要	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.