Assignment on Heat Conduction 1 Write a short note on...

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Assignment on Heat Conduction 1. Write a short note on thermal conductivity and diffusivity 2. Write the heat conduction equations in three dimensional cylindrical and spherical coordinates 3. For a plain wall with uniform heat generation and both the surfaces at same temper- atures, draw the temperature profile and show that the maximum temperature occurs at the center of the wall. 4. Explain critical radius of insulation and its significance. 5. Write a note on insulating materials 6. A glazed window, made of 8 mm thick glass of thermal conductivity 1.5W / m K has its outside surface maintained at 5 C so that frosting is reduced. The surroundings are at -10 C with convective coefficient 55W / m 2 K. the desired condition is attained by providing a uniform heat flux at the inner surface of the window which is fitted into a room where the air temperature is 25 C with convection coefficient of 12.5 W / m 2 K.
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