A furnace that has a 40-cm * 40-cm glass window can be considered to be a blackbody at 1200 K. If the transmissivity of the glass is 0.7 for radiation at wavelengths less than 3 mm and zero for radiation at wavelengths greater than 3 mm, determine the fraction and the rate of radiation coming from the furnace and transmitted through the window.
A furnace that has a 40-cm * 40-cm glass window can be considered to be a blackbody at 1200 K. If the transmissivity of the glass is 0.7 for radiation at wavelengths less than 3 mm and zero for radiation at wavelengths greater than 3 mm, determine the fraction and the rate of radiation coming from the furnace and transmitted through the window.
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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A furnace that has a 40-cm * 40-cm glass window
can be considered to be a blackbody at 1200 K. If the
transmissivity of the glass is 0.7 for radiation at wavelengths
less than 3 mm and zero for radiation at wavelengths
greater than 3 mm, determine the fraction and the rate of
radiation coming from the furnace and transmitted through
the window.
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