A long steel bar (20 mm diameter) at 455°C is placed horizontally in a water bath...
A long steel bar (20 mm diameter) at 455°C is placed horizontally in a water bath at 100°C under atmospheric pressure. (a) Estimate the initial heat transfer rate per unit length of the bar to the water when it is initially placed in water. You may assume emissivity of the steel bar to be 1. (b) What type of heat transfer mechanism is present when the bar has cooled to 110°C.
Homework Answers
ANSWER
Given data
diameter = 20 mm
Initial temperature of T i = 455degC
Temperature of water bath t = 100degC
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A long steel bar (20 mm diameter) at 455°C is placed
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