A steel tube with 5 cm internal diameter, 7.6 cm outer diameter and k=15W/m °C is covered with an isolative covering of thickness 2 cm and k= 0.2 W/m °C. A hot gas at 330 °C with h = 400 W/m² °C flows inside the tube. The outer surface of the insulation is exposed to cooler air at 30 °C with h = 60 W/m².°C. Calculate the heat loss from the tube to the air for 10 m of the tube and the temperature drop in the insulation layer.
A steel tube with 5 cm internal diameter, 7.6 cm outer diameter and k=15W/m °C is covered with an isolative covering of thickness 2 cm and k= 0.2 W/m °C. A hot gas at 330 °C with h = 400 W/m² °C flows inside the tube. The outer surface of the insulation is exposed to cooler air at 30 °C with h = 60 W/m².°C. Calculate the heat loss from the tube to the air for 10 m of the tube and the temperature drop in the insulation layer.
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 7.16P
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