A gas is cooled by circulating it in a turbulent regime through the interior of a circular duct with an internal diameter D; = 0.025 mm, whose internal wall remains constant at Toi = 310 K. The average temperature of the gas is Tm = 350 K, its density pPm = 1.01 kg/m³ and its thermal conductivity Am = 0.0297 W/(m K). The Reynolds number is equal to Rep = 28717, the Prandtl number Pr = 0.718 and the pressure drop per unit length, AP/L = 300 Pa/m. 3. What is the value of the mass flux? G = kg/(m²s) 4. What is the value of the convection coefficient if the duct is very long? (D/L → 0) h = W/(m² K)

A gas is cooled by circulating it in a turbulent regime through the interior of a circular duct with an internal diameter D; = 0.025 mm, whose internal wall remains constant at Toi = 310 K. The average temperature of the gas is Tm = 350 K, its density pPm = 1.01 kg/m³ and its thermal conductivity Am = 0.0297 W/(m K). The Reynolds number is equal to Rep = 28717, the Prandtl number Pr = 0.718 and the pressure drop per unit length, AP/L = 300 Pa/m. 3. What is the value of the mass flux? G = kg/(m²s) 4. What is the value of the convection coefficient if the duct is very long? (D/L → 0) h = W/(m² K)

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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