Thermal Resistance

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Thermal resistance, abbreviated as R, measures the temperature difference by which an object or material resists a heat flow.


Thermal Resistance Formula

\(\large{ R = \frac{ l  }{ k\;A }  }\)   


\(\large{ R }\) = thermal resistance

\(\large{ A }\) = total area of the heat exchanger

\(\large{ l }\) = length of material (measured on the path of the heat flow)

\(\large{ k }\) = thermal conductivity of material


Tags: Equations for Temperature Equations for Heat Exchangers