1, Two parallel disks, 80 cm in diameter, are separated by a distance of 10 cm and completely enclosed by a large room at 20°C. The properties of the surfaces are T1 = 620°C, e, = 0.9, T2= 220°C, e2= 0.45. What is the net radiant heat %3D %3D transfer with each surface? (Do not include back side exchange, only that from the surfaces facing each other.)
1, Two parallel disks, 80 cm in diameter, are separated by a distance of 10 cm and completely enclosed by a large room at 20°C. The properties of the surfaces are T1 = 620°C, e, = 0.9, T2= 220°C, e2= 0.45. What is the net radiant heat %3D %3D transfer with each surface? (Do not include back side exchange, only that from the surfaces facing each other.)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Please answer part c as well

Transcribed Image Text:Two parallel disks, 80 cm in diameter, are separated by a distance of 10 cm and
completely enclosed by a large room at 20°C. The properties of the surfaces
are T1 = 620°C, e, = 0.9, T2= 220°C, e2= 0.45. What is the net radiant heat
transfer with each surface? (Do not include back side exchange, only that from
the surfaces facing each other.)
Answers
1.
a)
Hot disk
watts
b)
Cold disk
watts
c)
Room
watts
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