# Upper and lower surfaces of a bus bar are convectively cooled by air at T with hu

## Question:

Upper and lower surfaces of a bus bar are convectively cooled by air at T∞ with hu ≠ h1. The sides are cooled by maintaining contact with heat sinks at To, through a thermal contact resistance of Rt,c The bar is of thermal conductivity k, and its width is twice its thickness L.

Consider steady-state conditions for which heat is uniformly generated at a volumetric rate q due to passage of an electric current. Using the energy balance method, derive finite-difference equations for nodes 1 and 13.

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**Related Book For**

## Fundamentals of Heat and Mass Transfer

**ISBN:** 978-0471457282

6th Edition

**Authors:** Incropera, Dewitt, Bergman, Lavine