A composite wall with three different layers, as shown in Figure 4.2 generates \(0.25 \mathrm{GW} / \mathrm{m}^{3}\) of heat. Using the relevant data given in Example 4.2.1, determine the temperature distribution across the wall using both linear and quadratic variations and compare the results.

Example 4.2.1

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9a T T2 T3 T4 + x1 h, Ta