Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duct of cross- section 0.2-mx0.2-m that passes through the attic of a house at a rate of 0.15 m³/s (see figure). The duct is observed to be nearly isothermal at 60° C. Determine the convection heat transfer coefficient (in W/m²-K) inside the duct. For air at 80°C:

Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duct of cross- section 0.2-mx0.2-m that passes through the attic of a house at a rate of 0.15 m³/s (see figure). The duct is observed to be nearly isothermal at 60° C. Determine the convection heat transfer coefficient (in W/m²-K) inside the duct. For air at 80°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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