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A half cylindrical shell with a radius of 75 cm is held at 200°C and has an emissivity of 0.4. A long cylinder has a diameter of 30 cm and is placed concentrically with the shell. The cylinder is radiatively black. At the instant the cylinder is 20°C, how much heat is exchanged from the shell to the cylinder, per meter length into the page, i.e., Qshell-cylinder/L. 20°C D = 30 cm 200°C R = 75 cm &= 0.4

A half cylindrical shell with a radius of 75 cm is held at 200°C and has an emissivity of 0.4. A long cylinder has a diameter of 30 cm and is placed concentrically with the shell. The cylinder is radiatively black. At the instant the cylinder is 20°C, how much heat is exchanged from the shell to the cylinder, per meter length into the page, i.e., Qshell-cylinder/L. 20°C D = 30 cm 200°C R = 75 cm &= 0.4

Elements Of Electromagnetics
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 half cylindrical shell with a radius of 75 cm is held at 200°C and has an emissivity of 0.4. A long 200°C R= 75 cm cylinder has a diameter of 30 cm and is placed 20°C E= 0.4 D= 30 cm concentrically with the shell. The cylinder is radiatively black. At the instant the cylinder is 20°C, how much heat is exchanged from the shell to the cylinder, per meter length into the page, i.e., Qshell-eylinder/L.
Transcribed Image Text:A half cylindrical shell with a radius of 75 cm is held at 200°C and has an emissivity of 0.4. A long 200°C R= 75 cm cylinder has a diameter of 30 cm and is placed 20°C E= 0.4 D= 30 cm concentrically with the shell. The cylinder is radiatively black. At the instant the cylinder is 20°C, how much heat is exchanged from the shell to the cylinder, per meter length into the page, i.e., Qshell-eylinder/L.
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