Mathematics · Heat Transfer
A plane composite wall with a cross-sectional area of 1 m2 is made up of two layers. Layer A is 100 mm thick with a thermal conductivity of 50 W/m-K, and Layer B is 10 mm thick with a thermal conductivity of 2 W/m-K. The thermal contact resistance at the interface is 0.003 m2 K/W. If the temperature of the open side of wall A is 300°C and that of the open side of wall B is 50°C, what will be the rate of heat flow through the wall?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125 kW✓
- 220 kW
- 335 kW
- 430 kW
Correct answer
25 kW
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