Engine oil enters a circular tube D=6-cm in diameter and L=29-m in length. If the flow rate and inlet temperature of the oil are 0.3-kg/s and Tmi =20°C, find the thermal entry length (x, =?) in the tube? Note: Use the following properties at mean temperature of the engine oil. u=0.50 N.s/m², v = 1.1 x 10-' m² /s, Pr = 220

Engine oil enters a circular tube D=6-cm in diameter and L=29-m in length. If the flow rate and inlet temperature of the oil are 0.3-kg/s and Tmi =20°C, find the thermal entry length (x, =?) in the tube? Note: Use the following properties at mean temperature of the engine oil. u=0.50 N.s/m², v = 1.1 x 10-' m² /s, Pr = 220

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 7.34P

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