Air flows through an uninsulated circular duct of 5 cm diameter at a mass flow rate of 0.03 kg/s. Air enters the duct at 95 °C and leaves the duct at a temperature of 70 °C. Length of the duct is 7 m and it is exposed to ambient at 3 °C. Determine the convective heat transfer coefficient, h. Properties of air at mean temperature are: ρ = 0.993 kg/m3, μ = 210x10-7 N-s/m2, k = 0.0304 W/m-K, and Cp = 1 KJ/kg-K. Assume the viscosity of wall temperature and of mean temperature are equal.
Air flows through an uninsulated circular duct of 5 cm diameter at a mass flow rate of 0.03 kg/s. Air enters the duct at 95 °C and leaves the duct at a temperature of 70 °C. Length of the duct is 7 m and it is exposed to ambient at 3 °C. Determine the convective heat transfer coefficient, h. Properties of air at mean temperature are: ρ = 0.993 kg/m3, μ = 210x10-7 N-s/m2, k = 0.0304 W/m-K, and Cp = 1 KJ/kg-K. Assume the viscosity of wall temperature and of mean temperature are equal.
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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Air flows through an uninsulated circular duct of 5 cm diameter at a mass flow rate of 0.03 kg/s. Air enters the duct at 95 °C and leaves the duct at a temperature of 70 °C. Length of the duct is 7 m and it is exposed to ambient at 3 °C. Determine the convective heat transfer coefficient, h.
Properties of air at mean temperature are: ρ = 0.993 kg/m3, μ = 210x10-7 N-s/m2, k = 0.0304 W/m-K, and Cp = 1 KJ/kg-K. Assume the viscosity of wall temperature and of mean temperature are equal.
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