The surface temperature of the hot side of the furnace wall is 1200°C. It is desired to maintain the outside of the wall at 38°C. A 152 mm refractory silica is used adjacent to the combustion chamber and 10 mm of steel covers the outside. What thickness of insulating bricks is necessary between refractory and steel, If the heat loss should be kept at 788 W/m2? use k = 13.84 W/m-K fro refractory silica; 0.15 for insulating brick, and 45 for steel. O 260 mm O 280 mm O 240 mm O 220 mm

The surface temperature of the hot side of the furnace wall is 1200°C. It is desired to maintain the outside of the wall at 38°C. A 152 mm refractory silica is used adjacent to the combustion chamber and 10 mm of steel covers the outside. What thickness of insulating bricks is necessary between refractory and steel, If the heat loss should be kept at 788 W/m2? use k = 13.84 W/m-K fro refractory silica; 0.15 for insulating brick, and 45 for steel. O 260 mm O 280 mm O 240 mm O 220 mm

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter9: Heat Transfer With Phase Change

Section: Chapter Questions

Problem 9.12P

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The surface temperature of the hot side of the furnace wall is 1200°C. It is desired to maintain the outside of the wall at 38°C. A 152 mm of refractory silica is used adjacent to the combustion chamber and 10 mm of steel covers the outside. What thickness of insulating bricks is necessary between refractory and steel, if the heat loss should be kept at 788 W/m²? Use k = 13.84 W/m-K for refractory silica; 0.15 for insulating brick, and 45 for steel. Badly needed asap. I will rate helpful. Thank you in advance.
800°C and h = 20 W/m².K. Determine A thick oak wall, initially at 25°C, is suddenly exposed to combustion products for which T the time of exposure required, in s, for the surface to reach the ignition temperature of 400°C. Evaluate the properties of the oak (cross grain) at 300 K. t = i S =
The surface temperature of the hot side of the furnace wall is 1200 degrees C. It is desired to maintain the outside of the wall at 38 degrees C. A 152 mm of refractory silica is used adjacent to the combustion chamber and 10 mm of steel covers the outside. What thickness of insulating bricks is necessary between refractory and steel, if the heat loss should be kept at 788 W/m2? Use k=13.84 W/m-K for refractory silica; 0.15 for insulating brick, and 45 for steel.
Good Day, Kindly help me with this problem, Thank you P.S. T= 30 degrees
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Pravinbhai
Consider a 1 cm thick copper wall (k=375 W/m K) whose one surface is exposed to condensing water vapor (h=10000 W/m² K) at a temperature of 200°C . The other surface is in contact with ambient air (h= 5 W/m²K) at a temperature of 25°C. a) Calculate the heat per unit area across the plate. b) Determine the temperatures at both surfaces of the wall.
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