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.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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