A fireplace wall is

0.1m

thick, and is made of common brick. You're burning your old notes from all of your classes except thermodynamics, making the inside surface of the brick

340\\\\deg C

. The outside surface of the brick is at

60\\\\deg C

.\ a. Assuming the heat is transferring at steady state, what is the rate of heat transfer through a

100cm

by 50

cm

area of the wall? Hint: Table A-19 has conductivity values. Answer: over

1kW

.\ b. If you had made the fireplace out of

0.025m

thick iron instead of brick, and it had the same amount of heat transfer and inside surface temperature as in part a, what would the outside temperature be? Answer: almost the same as the inside temperature.

1. A fireplace wall is 0.1m thick, and is made of common brick. You're burning your old notes from all of your classes except thermodynamics, making the inside surface of the brick 340C. The outside surface of the brick is at 60C. a. Assuming the heat is transferring at steady state, what is the rate of heat transfer through a 100cm by 50 cm area of the wall? Hint: Table A-19 has conductivity values. Answer: over 1kW. b. If you had made the fireplace out of 0.025m thick iron instead of brick, and it had the same amount of heat transfer and inside surface temperature as in part a, what would the outside temperature be? Answer: almost the same as the inside temperature