Exercise 13.8: cold air at 5°C is carried by a rectangular duct 30 cm X 20 cm in size which is maintained at 15°C over the whole surface. The velocity of the air is 10 m/sec. taking the following properties of air at a mean temperature of 10°C, find the heat gained by the airv when it is passed through 10 m length of duct

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Exercise 13.8: cold air at 5°C is carried by a
rectangular duct 30 cm X 20 cm in size which
is maintained at 15°C over the whole surface.
The velocity of the air is 10 m/sec. taking the
following properties of air at a mean
temperature of 10°C, find the heat gained by
the airv when it is passed through 10 m length
of duct
p = 1.25 kg/m³
k = 0.025 W/m. K
Cp
1005 J/kg. K
v 14.16 x 10-6 m²/sec
Transcribed Image Text:|| Exercise 13.8: cold air at 5°C is carried by a rectangular duct 30 cm X 20 cm in size which is maintained at 15°C over the whole surface. The velocity of the air is 10 m/sec. taking the following properties of air at a mean temperature of 10°C, find the heat gained by the airv when it is passed through 10 m length of duct p = 1.25 kg/m³ k = 0.025 W/m. K Cp 1005 J/kg. K v 14.16 x 10-6 m²/sec
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