An industrial spherical oven has 2.8 m diameter. It is placed in a factory floor where the air temperature is 25°C and surrounding temperature is 30°C. When the oven is running under part-load condition the temperature of the outer surface of the oven is 60°C and under peak load conditions the surface temperature reaches to 250°C. The total heat loss from the oven under peak-load conditions was found to be 905 kW. The emissivity of the oven surface is 0.75. Find the convection coefficient of air around the oven in this condition. 150.76 W/m2K
An industrial spherical oven has 2.8 m diameter. It is placed in a factory floor where the air temperature is 25°C and surrounding temperature is 30°C. When the oven is running under part-load condition the temperature of the outer surface of the oven is 60°C and under peak load conditions the surface temperature reaches to 250°C. The total heat loss from the oven under peak-load conditions was found to be 905 kW. The emissivity of the oven surface is 0.75. Find the convection coefficient of air around the oven in this condition. 150.76 W/m2K
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
![An industrial spherical oven has 2.8 m diameter. It is placed in a factory floor where the air temperature
is 25°C and surrounding temperature is 30°C. When the oven is running under part-load condition
the temperature of the outer surface of the oven is 60°C and under peak load conditions the surface
temperature reaches to 250°C. The total heat loss from the oven under peak-load conditions was found
to be 905 kW. The emissivity of the oven surface is 0.75. Find the convection coefficient of air around the
oven in this condition].
150.76 W/m2K](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe267f3b0-26bf-4f7b-85ef-a50a58c4836a%2F2b470d97-9859-4390-b076-d931c62e9d94%2Fp93l4g9_processed.png&w=3840&q=75)
Transcribed Image Text:An industrial spherical oven has 2.8 m diameter. It is placed in a factory floor where the air temperature
is 25°C and surrounding temperature is 30°C. When the oven is running under part-load condition
the temperature of the outer surface of the oven is 60°C and under peak load conditions the surface
temperature reaches to 250°C. The total heat loss from the oven under peak-load conditions was found
to be 905 kW. The emissivity of the oven surface is 0.75. Find the convection coefficient of air around the
oven in this condition].
150.76 W/m2K
Expert Solution

Step 1
Given:
D = 2.8 m, Therefore R = 1.4 m
Ta = 25 oC = 25 +273 = 298 K
Qpeak load = 905 kW
Ts, peak = 60 oC = 60 +273 = 523 K
To find:
Convection coefficient
Step by step
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