A 150 mm diameter orange (P =950 kg/m.K, c= 4150 J/kg.K and k= 0.6 W/m.K), aproximately spherical in shape is initially at an uniform temperature 23°C. It's placed in a refrigerator where temperature is 5°C and average convective heat transfer coefficient over the orange surface is h = 6 W/m2.K. Determine the temperature at the centre and the temperature at the radius of 45 mm of the orange after a period of 1.5 hours.

A 150 mm diameter orange (P =950 kg/m.K, c= 4150 J/kg.K and k= 0.6 W/m.K), aproximately spherical in shape is initially at an uniform temperature 23°C. It's placed in a refrigerator where temperature is 5°C and average convective heat transfer coefficient over the orange surface is h = 6 W/m2.K. Determine the temperature at the centre and the temperature at the radius of 45 mm of the orange after a period of 1.5 hours.

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 3.10P: 3.10 A spherical shell satellite (3-m-OD, 1.25-cm-thick stainless steel walls) re-enters the...

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