השוואת שיטות

	ממוצע לוגריתמי של הפרשי טמפרטורה	רשת התנגדות תרמית
תחום	תרמודינמיקה	תרמודינמיקה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1950	1985
הוגה השיטה	Donald Kern	Frank Incropera and David DeWitt
סוג	Heat transfer correlation	Heat transfer network analysis
מקור מכונן	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
כינויים	LMTD, logarithmic mean temperature difference	thermal circuit analogy, thermal network
קשורות	3	3
תקציר	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.