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Posted on May 17, 2024

Carbon steel shafts of diameter 0.1 m are heat treated in a gas furnace at 1200 K (convective heat transfer coefficient h=100 W/(m K).

Carbon steel shafts of diameter 0.1 m are heat treated in a gas furnace at 1200 K (convective heat transfer coefficient h=100 W/(m K). If shafts enter the furnace at 300K, how long must they remain in the furnace to reach 800K? [10]

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