Air at 20°C enters a heated circular tube with a diameter of 30 mm and a length of 3 m. The mass flow rate is 0.005 kg/s and the flow is fully developed with h = 25 W/m². 20°C 0.005 kg/s q" If the tube is heated by uniform surface heat flux of 1000 W/m², calculate the surface temperature at the outlet (Ts.o) in °C =
Air at 20°C enters a heated circular tube with a diameter of 30 mm and a length of 3 m. The mass flow rate is 0.005 kg/s and the flow is fully developed with h = 25 W/m². 20°C 0.005 kg/s q" If the tube is heated by uniform surface heat flux of 1000 W/m², calculate the surface temperature at the outlet (Ts.o) in °C =
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter7: Forced Convection Inside Tubes And Ducts
Section: Chapter Questions
Problem 7.27P
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Heat Transfer
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![Air at 20°C enters a heated circular tube with a diameter of 30 mm and a length of 3 m. The mass flow rate is 0.005 kg/s and the flow is
fully developed with h = 25 W/m².
20°C
0.005 kg/s
q"
If the tube is heated by uniform surface heat flux of 1000 W/m2, calculate the surface temperature at the outlet (Ts.o) in °C =
If the surface heat flux varies linearly in the flow direction as 600x W/m2, (x is in meters and equals to 0 at the inlet and equals to 3 at the
outlet) calculate the mean temperature at the outlet (Tm,o) in °C =
105
116
128 || 138
145 || 152
167
60.0
70.4
80.5
90.1
100.7 || 110.2| 120.1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc636a00a-110d-40e2-abc5-260e49660b5b%2Fad6b3c5a-8f9d-4648-aa24-f8c00181a91e%2Fcnxxft8_processed.png&w=3840&q=75)
Transcribed Image Text:Air at 20°C enters a heated circular tube with a diameter of 30 mm and a length of 3 m. The mass flow rate is 0.005 kg/s and the flow is
fully developed with h = 25 W/m².
20°C
0.005 kg/s
q"
If the tube is heated by uniform surface heat flux of 1000 W/m2, calculate the surface temperature at the outlet (Ts.o) in °C =
If the surface heat flux varies linearly in the flow direction as 600x W/m2, (x is in meters and equals to 0 at the inlet and equals to 3 at the
outlet) calculate the mean temperature at the outlet (Tm,o) in °C =
105
116
128 || 138
145 || 152
167
60.0
70.4
80.5
90.1
100.7 || 110.2| 120.1
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