You are using a heated cylindrical tube blackbody as a chamber for an experiment. The tube is 2m long and 400mm in diameter. The tube must be kept at 600oC for the experiment. For this problem, assume that radiation is the only mode of heat transfer. Determine: a) The blackbody emissive power b) The amount of radiation emitted by the ball in 12 minutes at 18 um.

You are using a heated cylindrical tube blackbody as a chamber for an experiment. The tube is 2m long and 400mm in diameter. The tube must be kept at 600oC for the experiment. For this problem, assume that radiation is the only mode of heat transfer. Determine: a) The blackbody emissive power b) The amount of radiation emitted by the ball in 12 minutes at 18 um.

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 11.26P

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1.28 The sun has a radius of and approximates a blackbody with a surface temperature of about 5800 K. Calculate the total rate of radiation from the sun and the emitted radiation flux per square meter of surface area.
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1.26 Repeat Problem 1.25 but assume that the surface of the storage vessel has an absorbance (equal to the emittance) of 0.1. Then determine the rate of evaporation of the liquid oxygen in kilograms per second and pounds per hour, assuming that convection can be neglected. The heat of vaporization of oxygen at –183°C is .
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