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A steel ball of 10 mm diameter at 1000 K is required to be cooled to 350 K by immersing it in a water environment at 300 K. The convective heat transfer coefficient is 1000 W/m2K. Thermal conductivity of steel is 40 W/mK. The time constant for the cooling process t is 16 s . The time required (in s) to reach the final temperature is |
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Answer» A steel ball of 10 mm diameter at 1000 K is required to be cooled to 350 K by immersing it in a water environment at 300 K. The convective heat transfer coefficient is 1000 W/m2K. Thermal conductivity of steel is 40 W/mK. The time constant for the cooling process t is 16 s . The time required (in s) to reach the final temperature is |
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