long cylinder of radius 150 mm and at an initial uniform temperature of 530 ° C is suddenly exposed to an environment at 30⁰C . The convection heat transfer coefficient between the surface of the cylinder and the environment is 380W/(m^2K ) . The thermal conductivity and thermal diffusivity of the cylinder material are 200W/(mK) and 8.5×10^-5m^2/s respectively . Determine ( a ) the temperature at a radius of 120 mm and ( b ) the heat transferred per metre length of the cylinder 265 seconds after the cylinder is exposed to the environment ( use Heisler charts ) .
long cylinder of radius 150 mm and at an initial uniform temperature of 530 ° C is suddenly exposed to an environment at 30⁰C . The convection heat transfer coefficient between the surface of the cylinder and the environment is 380W/(m^2K ) . The thermal conductivity and thermal diffusivity of the cylinder material are 200W/(mK) and 8.5×10^-5m^2/s respectively . Determine ( a ) the temperature at a radius of 120 mm and ( b ) the heat transferred per metre length of the cylinder 265 seconds after the cylinder is exposed to the environment ( use Heisler charts ) .
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A long cylinder of radius 150 mm and at an initial uniform temperature of 530 ° C is suddenly exposed to an environment at 30⁰C . The convection heat transfer coefficient between the surface of the cylinder and the environment is 380W/(m^2K ) . The thermal conductivity and thermal diffusivity of the cylinder material are 200W/(mK) and 8.5×10^-5m^2/s respectively . Determine ( a ) the temperature at a radius of 120 mm and ( b ) the heat transferred per metre length of the cylinder 265 seconds after the cylinder is exposed to the environment ( use Heisler charts ) .
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