So sánh phương pháp

	Chu trình Brayton	Phương pháp Hiệu suất-NTU	Chu trình Nén Hơi Nước
Lĩnh vực	Nhiệt động lực học	Nhiệt động lực học	Nhiệt động lực học
Họ	Process / pipeline	Process / pipeline	Process / pipeline
Năm ra đời	1873	1984	1834
Người khởi xướng	George Brayton	William Kays and Alvin London	Jacob Perkins
Loại	Thermodynamic cycle	Heat transfer correlation	Thermodynamic cycle
Công trình gốc	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	Stoecker, W. F., Jones, J. W., & Sunnam, B. A. (1998). Refrigeration and Air Conditioning (2nd ed.). McGraw-Hill. ISBN: 978-0070613638
Tên gọi khác	Joule cycle, gas turbine cycle	epsilon-NTU method, effectiveness method	refrigeration cycle, heat pump cycle
Liên quan	3	3	3
Tóm tắt	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.	The Vapor Compression Cycle is the fundamental thermodynamic cycle for refrigeration systems and heat pumps. It describes how mechanical work is used to transfer heat from a cold space (evaporator) to a warm space (condenser), operating against the natural temperature gradient. The cycle consists of four processes: isentropic compression, isobaric condensation, isenthalpic throttling, and isobaric evaporation.