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Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duet of cross 02 mx 0.2 m that passes through the attic of a house at a rate of 0.15 m/s. The duct is observed to be isothermal at 60°C. Determine Hydraulic diameter and Re. if the flow is Laminar or turbulent mine the length of the entry region and length of fully develop region. Explain how calculate the Nussul er on hot wall experimentally. Air Table :Properties for Air p(kg/m) C₂ (J/kg *C) k (W/m. C) 0.9994 1008 0.02953 Pr 0.7154 v (m²/s) 2.097x10

Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duet of cross 02 mx 0.2 m that passes through the attic of a house at a rate of 0.15 m/s. The duct is observed to be isothermal at 60°C. Determine Hydraulic diameter and Re. if the flow is Laminar or turbulent mine the length of the entry region and length of fully develop region. Explain how calculate the Nussul er on hot wall experimentally. Air Table :Properties for Air p(kg/m) C₂ (J/kg *C) k (W/m. C) 0.9994 1008 0.02953 Pr 0.7154 v (m²/s) 2.097x10

Elements Of Electromagnetics
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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Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duet of cross section 0.2 mx 0.2 m that passes through the attic of a house at a rate of 0.15 m/s. The duct is observed to be nearly isothermal at 60°C Determine Hydraulic diameter and Re. if the flow is Laminar or turbulent Determine the length of the entry region and length of fully develop region. Explain how calculate the Nussult number on hot wall experimentally. Air Table :Properties for Air p(kg/m) C₂(J/kg °C) k (W/m. C) 0.02953 0.9994 1008 Pr 0.7154 v (m/s) 2.097x10
Transcribed Image Text:Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duet of cross section 0.2 mx 0.2 m that passes through the attic of a house at a rate of 0.15 m/s. The duct is observed to be nearly isothermal at 60°C Determine Hydraulic diameter and Re. if the flow is Laminar or turbulent Determine the length of the entry region and length of fully develop region. Explain how calculate the Nussult number on hot wall experimentally. Air Table :Properties for Air p(kg/m) C₂(J/kg °C) k (W/m. C) 0.02953 0.9994 1008 Pr 0.7154 v (m/s) 2.097x10
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