A long conduit is constructed with diffuse, gray walls 0.5 m wide. The top and bottom of the conduit are insulated. The emissivities of the walls are &, = 0.45.2 = 0.65, and 3 = 0.15, respectively, while the temperatures of walls 1 and 2 are 500 K and 725 K. respectively. A₁T₁, 1 (a) Determine the temperature of the insulated walls, in K. (b) Determine the net radiation heat rate from surface 2 per unit conduit length, in W/m.

A long conduit is constructed with diffuse, gray walls 0.5 m wide. The top and bottom of the conduit are insulated. The emissivities of the walls are &, = 0.45.2 = 0.65, and 3 = 0.15, respectively, while the temperatures of walls 1 and 2 are 500 K and 725 K. respectively. A₁T₁, 1 (a) Determine the temperature of the insulated walls, in K. (b) Determine the net radiation heat rate from surface 2 per unit conduit length, in W/m.

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.24P: Two large parallel plates with surface conditions approximating those of a blackbody are maintained...

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