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vovikov84 [41]
3 years ago
7

A horizontal, opaque surface at a steady-state temperature of 80°C is exposed to an airflow having a free stream temperature of

25°C with a convection heat transfer coefficient of 20 W/m2 ·K. The emissive power of the surface is 628 W/m2 , the irradiation is 1380 W/m2 , and the reflectivity is 0.30.
Determine the absorptivity of the surface.

Determine the net radiation heat transfer rate for this surface. Is this heat transfer to the surface or from the surface?

Determine the com-bined heat transfer rate for the surface. Is this heat transfer to the surface or from the surface?

Engineering
1 answer:
lesya692 [45]3 years ago
7 0

Answer:

Check the explanation

Explanation:

Kindly check the attached images below to see the step by step explanation to the question above.

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Which of the following justifies the need for an already-certified engineer to continue to take classes?
tatiyna
What are the answer choices?
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Sav [38]

Answer:

1.3cm

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algol [13]

Answer:

A. Identify the need, recognize limitations of current toothpaste containers, and then brainstorm ideas on how to improve the existing

Explanation:

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Answer: environmental impact

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