A wall surface on a house is 30°C with an emissivity of ?

Chapter 3, Problem 67HP

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QUESTION:

Problem 67HP

A wall surface on a house is 30°C with an emissivity of ε = 0.7. The surrounding ambient air is at 15°C with an average emissivity of 0.9. Find the rate of radiation energy from each of those surfaces per unit area.

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QUESTION:

Problem 67HP

A wall surface on a house is 30°C with an emissivity of ε = 0.7. The surrounding ambient air is at 15°C with an average emissivity of 0.9. Find the rate of radiation energy from each of those surfaces per unit area.

ANSWER:

Solution

Step 1 of 3

We need to find out the rate of radiation energy from each of those surfaces per unit area.

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