手法を比較

	対数平均温度差（LMTD）法	熱抵抗ネットワーク
分野	熱力学	熱力学
系統	Process / pipeline	Process / pipeline
提唱年	1950	1985
提唱者	Donald Kern	Frank Incropera and David DeWitt
種類	Heat transfer correlation	Heat transfer network analysis
原典	Kern, D. Q. (1950). Process Heat Transfer. McGraw-Hill.	Incropera, F. P., DeWitt, D. P., Bergman, T. L., & Lavine, A. S. (2007). Fundamentals of Heat and Mass Transfer (6th ed.). Wiley. ISBN: 978-0470055540
別名	LMTD, logarithmic mean temperature difference	thermal circuit analogy, thermal network
関連	3	3
概要	The Log Mean Temperature Difference (LMTD) method is a fundamental tool for calculating heat transfer rates in heat exchangers. It defines the effective temperature difference between two fluids as the logarithmic average of the temperature differences at the inlet and outlet. This method enables engineers to size and analyze heat exchangers systematically using the basic heat transfer equation Q = U A LMTD.	The Thermal Resistance Network method uses electrical circuit analogy to solve heat transfer problems. It treats heat flow as analogous to electric current, thermal resistance analogous to electrical resistance, and temperature difference analogous to voltage potential. This powerful conceptual framework enables engineers to analyze complex multi-layer heat transfer systems systematically.