# A1 - adjoining the outer surface is 20 W/m 2 K. What is the...

This preview shows page 1. Sign up to view the full content.

CHG 2314 HEAT TRANSFER Professor: B. Kruczek 2005/01/14 Assignment No. 1 1. The hot combustion gases of a furnace are separated from the ambient air and its surroundings, which are at 25 o C, by a brick wall 0.15 m thick. The brick has a thermal conductivity of 1.2 W/m K and a surface emissivity of 0.7. Under the steady- state conditions an inner surface is at 350 o C. Free convection heat transfer to the air
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: adjoining the outer surface is 20 W/m 2 K. What is the brick outer surface temperature? To reduce the risk of burn injuries to operating personnel, the outer surface should be maintained at or below 65 o C. What should be the minimum thickness of the brick wall to accomplish this goal? 2. Problem 1.38. 3. Problem 1.70. Due Date: Jan 21, 2005 at 4:00 p.m. in the assignment box....
View Full Document

## This note was uploaded on 01/27/2011 for the course CHG 2314 taught by Professor Kruz. during the Spring '10 term at University of Ottawa.

Ask a homework question - tutors are online