Chapter 9: Problem 36
Consider a thin 16-cm-long and 20-cm-wide horizontal plate suspended in air at \(20^{\circ} \mathrm{C}\). The plate is equipped with electric resistance heating elements with a rating of \(20 \mathrm{~W}\). Now the heater is turned on and the plate temperature rises. Determine the temperature of the plate when steady operating conditions are reached. The plate has an emissivity of \(0.90\) and the surrounding surfaces are at \(17^{\circ} \mathrm{C}\). As an initial guess, assume a surface temperature of \(50^{\circ} \mathrm{C}\). Is this a good assumption?
Short Answer
Step by step solution
Key Concepts
These are the key concepts you need to understand to accurately answer the question.