3. Consider a 3 m high rectangular enclosure consisting of two surfaces separated by a 0.1 m air gap at 1 atm. If the surface temperatures across the air gap are 30 °C and -10 °C, determine the ratio of the heat transfer rate for the horizontal orientation (with hotter surface at the bottom) to that for vertical orientation. [1.66] 0.1 m 3 m Air -10 -10°C 30°C

3. Consider a 3 m high rectangular enclosure consisting of two surfaces separated by a 0.1 m air gap at 1 atm. If the surface temperatures across the air gap are 30 °C and -10 °C, determine the ratio of the heat transfer rate for the horizontal orientation (with hotter surface at the bottom) to that for vertical orientation. [1.66] 0.1 m 3 m Air -10 -10°C 30°C

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

3. Consider a 3 m high rectangular enclosure consisting of two
surfaces separated by a 0.1 m air gap at 1 atm. If the surface
temperatures across the air gap are 30 °C and -10 °C,
determine the ratio of the heat transfer rate for the
horizontal orientation (with hotter surface at the bottom)
to that for vertical orientation. [1.66]
0.1 m
3 m
Air
-10°C
-10°C
30°C
Air
30°℃
<-0.1m->>
3m

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