Conduction Heat Transfer Summary

Heat Transfer CONDUCTION HEAT TRANSFER Solution: Q L 2p (T_in T_o) � � � � � � � � � � � � ln � � � � � � � � r₂ r₁ k_s ln � � � � � � � � r₃ r₂ k_a 2p(550⁰F 100^oF) � � � � � � � � � � � � � � ln^� � � � � � 6 in 5 in 12.5 Btu hr ft ^oF ln^� � � � � � 9 in 6 in 0.14 Btu hr ft ^oF 971 Btu hr ft Summary The important information in this chapter is summarized below. Conduction Heat Transfer Summary • Conduction heat transfer is the transfer of thermal energy by interactions between adjacent molecules of a material. • Fourier’s Law of Conduction can be used to solve for rectangular and cylindrical coordinate problems. • Heat flux ( ) is the heat transfer rate ( ) divided by the area (A). Q Q • Heat conductance problems can be solved using equivalent resistance formulas analogous to electrical circuit problems. Rev. 0 Page 17 HT-02