Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 22 Jan 2018 My Price 7.00

hemispherical enclosure

A small disk 5 mm in diameter is positioned at the center of an isothermal, hemispherical enclosure. The disk is diffuse and gray with an emissivity of 0.7 and is maintained at 900 K. The hemispherical enclosure, maintained at 300 K, has a radius of 100 mm and an emissivity of 0.85.

 

 

Calculate the radiant power leaving an aperture of diameter 2 mm located on the enclosure as shown.

What is the solar absorptivity, αS? If it is assumed that  and that the surface is at a temperature of 340 K, what is its total, hemispherical emissivity?

Answers

Maurice Tutor
(5)
Status NEW Posted 22 Jan 2018 06:01 PM My Price 7.00

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