Ex:4 A quartz Sphere has a thermierl diffusivity o9.5X10 m/s amel diameter of 25 min; and thermal csnductivityof us2 wlm. The sphere is initially at auniferm temp.of 25è and ifis Suddeuly Subjected to a convectie nenuironment at 200 c, The Convection heat transfer afficieutlo w/m? K. Caloulate the temp. at the Center.and atradius of Gi mm aftera time of 4 min.

Write the given values in the problem. α=9.5×10-7 m2/s d=25 mm k=1.52 W/m·°C…

Ex:4 A quartz sphere has a thermal.diffusivity of 9.5x10 m/s and diameter of 25 min; and thermal conductivity ofu52 w/m.e The sphere is initially at auniform temp. of 25 è and itis Suddenly Subjectèd to a convectien enuironmout at 200°c. The Convection heat transfer afficicut Ilo w/m? K. calaulate the temp at the Center and at radius of G4 mm after a time of 4 min

Ex:4 A quartz sphere has a thermal.diffusivity of 9.5x10 m/s and diameter of 25 min; and thermal conductivity ofu52 w/m.e The sphere is initially at auniform temp. of 25 è and itis Suddenly Subjectèd to a convectien enuironmout at 200°c. The Convection heat transfer afficicut Ilo w/m? K. calaulate the temp at the Center and at radius of G4 mm after a time of 4 min

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.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.21P

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