Two panels of different materials are spaced 6m apart and at a 30-degree angle. The top panel is 2m x 1m. The top panel has an emissivity of 0.6. The bottom panel is made of a translucent material and has an absorptivity of 0.2 and a reflectivity of 0.5. a) If the top panel is kept at 100oC and the bottom panel at −50oC, how much radiation is the top panel emitting to the bottom panel? b) How much of that radiation passes through the bottom panel? c) What is the irradiation power, G?
Two panels of different materials are spaced 6m apart and at a 30-degree angle. The top panel is 2m x 1m. The top panel has an emissivity of 0.6. The bottom panel is made of a translucent material and has an absorptivity of 0.2 and a reflectivity of 0.5. a) If the top panel is kept at 100oC and the bottom panel at −50oC, how much radiation is the top panel emitting to the bottom panel? b) How much of that radiation passes through the bottom panel? c) What is the irradiation power, G?
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 1.26P: 1.26 Repeat Problem 1.25 but assume that the surface of the storage vessel has an absorbance (equal...
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Two panels of different materials are spaced 6m apart and at a 30-degree angle. The top panel is 2m x 1m. The top panel has an emissivity of 0.6. The bottom panel is made of a translucent material and has an absorptivity of 0.2 and a reflectivity of 0.5.
a) If the top panel is kept at 100oC and the bottom panel at −50oC, how much radiation is the top panel emitting to the bottom panel?
b) How much of that radiation passes through the bottom panel?
c) What is the irradiation power, G?
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