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  3. 3 spherical wall a reaction inside a spherical chamber releases...

Question: 3 spherical wall a reaction inside a spherical chamber releases...

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3. Spherical Wall. A reaction inside a spherical chamber releases heat at a rate of Qn -20 kW The inner surface of the chamber has a radius of r -60 cm, and the outer surface has a radius of 艺=1 m. The thermal conductivity of the wall is k=0.85 W/m-K. The outer surface convects heat to air at 25 °C with a convection coefficient of h-100 W/m2-K. Thermal radiation from the surface can be neglected. (a) What are the proper boundary conditions? Solve for the temperature distribution across the wall of the chamber. (b) What is inner wall temperature T(η) ? What percentage of the temperature drop between T(r;) and T,. occurs over the chamber wall, and what percentage occurs between the outer surface temperature T(r,) and the surrounding fluid temperature? How is this result related gen h(r-r) to the value of k ? Explain

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