EX3 Two coaxial cylinders of diameters D=0.10 m and D 0.30 m and emissivities 1 = 0.7 and 2=0.4 are maintained at umiform temperatures of T1= 750 K and T; - 500 K. respectively. Now a coaxial radiation shield of diameter D; 0.20 m and emissivity 3-0.2 is placed between the two cylinders. Determine the net rate of radiation heat transfer between the two cylinders per unit length of the cylinders and compare the result with that without the shield.
EX3 Two coaxial cylinders of diameters D=0.10 m and D 0.30 m and emissivities 1 = 0.7 and 2=0.4 are maintained at umiform temperatures of T1= 750 K and T; - 500 K. respectively. Now a coaxial radiation shield of diameter D; 0.20 m and emissivity 3-0.2 is placed between the two cylinders. Determine the net rate of radiation heat transfer between the two cylinders per unit length of the cylinders and compare the result with that without the shield.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter11: Heat Transfer By Radiation
Section: Chapter Questions
Problem 11.57P
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