Question

1. A composite wall is made up of two layers of bricks each 100 mm thick with a 50 mm air space between them. The coefficients of thermal conductivity are
2. Inside brick - 0.6 W/m K
3. Air - 0.025 W/m K
4. Outside brick - 0.8 W/m K
5. The wall is 6.15 m long and 5.5 m high.
6. a. Determine the heat loss per hour through the wall if the inside face temperature is 24^oC and the outside face temperature is 7^oC
7. b. Determine the interface temperatures

Answer 1

Diagram with the table is given for the solution: