Register
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
180k views
1 vote
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?

User Tariqdaouda
by
4.8k points

1 Answer

3 votes

Answer:

Check the explanation

Step-by-step explanation:

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

A horizontal, opaque surface at a steady-state temperature of 80°C is exposed to an-example-1
A horizontal, opaque surface at a steady-state temperature of 80°C is exposed to an-example-2
User Memyself
by
4.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.4m questions

5.7m answers

Other Questions

Evan is building a toy rocket. He wants to fill the rocket with high-pressure water in order to launch it into the air. Which of the following materials would be the best choice for constructing the outside
Which of the following questions would an immunologist be most interested in? How does lung cancer spread to other organs? How long does it take for bones to repair themselves after breaks? What is the
Implement this C program by defining a structure for each payment. The structure should have at least three members for the interest, principle and balance separately. And store all the payments in a structure
Only an outer panel is being replaced. Technician A says that removing the spot welds by drilling through both panels allows the plug welds to be made through the replacement outer panel. Technician B
Solving for dominant strategies and the Nash equilibrium Suppose Andrew and Beth are playing a game in which both must simultaneously choose the action Left or Right. The payoff matrix that follows shows
Link Copied!