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Engineering and Tech / Fundamentals of Engineering Thermodynamics 8 / Chapter 2 / Problem 2.54

Fundamentals of Engineering Thermodynamics | 8th Edition | ISBN: 9781118412930 | Authors: Michael J. Moran

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A body whose surface area is 0.5 m2 , emissivity is 0.8,

Chapter 2, Problem 2.54

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QUESTION:

A body whose surface area is \(0.5 \mathrm{~m}^{2}\), emissivity is 0.8, and temperature is \(150^{\circ} \mathrm{C}\) is placed in a large, evacuated chamber whose walls are at \(25^{\circ} \mathrm{C}\). What is the rate at which radiation is emitted by the surface, in W? What is the net rate at which radiation is exchanged between the surface and the chamber walls, in W?

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QUESTION:

A body whose surface area is \(0.5 \mathrm{~m}^{2}\), emissivity is 0.8, and temperature is \(150^{\circ} \mathrm{C}\) is placed in a large, evacuated chamber whose walls are at \(25^{\circ} \mathrm{C}\). What is the rate at which radiation is emitted by the surface, in W? What is the net rate at which radiation is exchanged between the surface and the chamber walls, in W?

ANSWER:

Step 1 of 3

Given data:

The surface area of the body, .

The emissivity of the body, .

The temperature of the body .

The temperature of the evacuated chamber, .

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