Consider a 125 cm diameter carbon steel 1 c k 40 wm-k, Mechanical Engineering

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Consider a 125 cm diameter carbon steel 1 c k 40 wm-k

Consider a 1.25 cm diameter carbon steel (1% C, k = 40 W/m-K) sphere to be cooled from 500^oC to 100^oC by a cooling air flow at 25^oC with convection coefficient of 110 W/m2-K.

a) Determine the time required.

b) Determine the instantaneous heat transfer rate 2 minutes after the start of cooling.

c) Estimate the total energy transferred from the sphere during first 2 minutes.

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Mechanical Engineering: Consider a 125 cm diameter carbon steel 1 c k 40 wm-k

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Mechanical Engineering: Consider a 125 cm diameter carbon steel 1 c k 40 wm-k

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