Engine oil enters a circular tube D=10-cm in diameter and L=23-m in length. If the flow rate and inlet temperature of the oil are m=0.4-kg/s and Tm,i =18°C, find the thermal entry length (x1th =?) in the tube? Note: Use the following properties at mean temperature of the engine oil. µ=0.50 N.s/m², v = 1.1 × 10-7 m²/s, Pr = 220

Engine oil enters a circular tube D=10-cm in diameter and L=23-m in length. If the flow rate and inlet temperature of the oil are m=0.4-kg/s and Tm,i =18°C, find the thermal entry length (x1th =?) in the tube? Note: Use the following properties at mean temperature of the engine oil. µ=0.50 N.s/m², v = 1.1 × 10-7 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.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.15P

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