WA vertical cylinder 1.75 m tall and 0.3 m in diameter might be used to approximate a man for heat-transfer purposes (thermal conductivity, k-0.8 /m C). Suppose the center temperature of the cylinder is 37 C, the surface emissivity is 0.9, and the cylinder is placed in a large room where the air temperature is 20°C and the heat transfer coefficient is 20W /m"C and the wall temperature is 10°C. 1-Sketch the equivalent thermal resistance network. 2-Neglect the radiation and: -Caleulate the heat lost from the from the cylinder. -Determine the surface temperatures of the cylinder.
WA vertical cylinder 1.75 m tall and 0.3 m in diameter might be used to approximate a man for heat-transfer purposes (thermal conductivity, k-0.8 /m C). Suppose the center temperature of the cylinder is 37 C, the surface emissivity is 0.9, and the cylinder is placed in a large room where the air temperature is 20°C and the heat transfer coefficient is 20W /m"C and the wall temperature is 10°C. 1-Sketch the equivalent thermal resistance network. 2-Neglect the radiation and: -Caleulate the heat lost from the from the cylinder. -Determine the surface temperatures of the cylinder.
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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Transcribed Image Text:A vertical cylinder 1.75 m tall and 0.3 m in diameter might be used to approximate a man
for heat-transfer purposes (thermal conductivity, k-0.8 /m°C). Suppose the center temperature of
the cylinder is 37°C, the surface emissivity is 0.9, and the cylinder is placed in a large room
where the air temperature is 20°C and the heat transfer coefficient is 20W /m2°C and the wall
temperature is 10°C.
1-Sketch the equivalent thermal resistance network.
2-Neglect the radiation and:
-Cakculate the heat lost from the from the cylinder.
-Determine the surface temperatures of the cylinder.
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