A -cm dlar сорper 933 kg/m3, c = 385 J/(kg °C)) sphere is heated in a convection furnace for a very long time so that its temperature becomes equal to the temperature of the air in the furnace at 260 °C. Then, the sphere is removed from the furnace and is placed in a forced convection flow where the heat transfer coefficient h is 17 W/(m² °C) and where the temperature is 38 °C. The sphere is allowed to remain in the flow for 450 seconds at which time it is returned to the convection furnace. After 900 seconds in the furnace, the temperature of the sphere is 240.5 °C. What is the temperature of the sphere just before it is returned to the furnace?

A -cm dlar сорper 933 kg/m3, c = 385 J/(kg °C)) sphere is heated in a convection furnace for a very long time so that its temperature becomes equal to the temperature of the air in the furnace at 260 °C. Then, the sphere is removed from the furnace and is placed in a forced convection flow where the heat transfer coefficient h is 17 W/(m² °C) and where the temperature is 38 °C. The sphere is allowed to remain in the flow for 450 seconds at which time it is returned to the convection furnace. After 900 seconds in the furnace, the temperature of the sphere is 240.5 °C. What is the temperature of the sphere just before it is returned to the furnace?

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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