Determine the rate of heat transfer from the balls

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calculate the rate of heat transfer from the balls

Stainless steel ball bearings (r 8085 kg/m3 and cp 0.480 kJ/kg · °C) having a diameter of 1.2 cm are to be quenched in water at a rate of 800 per minute. The balls leave the oven at a uniform temperature of 900°C and are exposed to air at 25°C for a while before they are dropped into the water. If the temperature of the balls drops to 850°C prior to quenching, determine the rate of heat transfer from the balls to the air.

Reference no: EM131030596

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