2. A copper tube with 8 cm outer diameter, 6 cm inner diameter and k = 15 W/m-K iscovered with an insulation covering of thickness 3 cm and k = 0.2 W/m-K. A hotgas at 300°C with hi= 400 W/m²-K flow inside the tube. The outer surface ofinsulation is exposed to cool air at 30°C with ho = 50 W/m²-K. Find the overall heattransfer coefficient.

Answered: Image /qna-images/answer/f53c3057-0cb3-4981-9adb-8a4ff4d92812.jpg

2. A copper tube with 8 cm outer diameter, 6 cm inner diameter and k = 15 W/m-K is covered with an insulation covering of thickness 3 cm and k = 0.2 W/m-K. A hot gas at 300°C with h₁ = 400 W/m²-K flow inside the tube. The outer surface of insulation is exposed to cool air at 30°C with ho= 50 W/m²-K. Find the overall heat transfer coefficient.

2. A copper tube with 8 cm outer diameter, 6 cm inner diameter and k = 15 W/m-K is covered with an insulation covering of thickness 3 cm and k = 0.2 W/m-K. A hot gas at 300°C with h₁ = 400 W/m²-K flow inside the tube. The outer surface of insulation is exposed to cool air at 30°C with ho= 50 W/m²-K. Find the overall heat transfer coefficient.

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 7.17P: Determine the rate of heat transfer per meter length to a light oil flowing through a 2.5-cm-ID,...

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