A ball made of steel alloy with a diameter of 2 millimeters is first heated to 800 degrees and then suddenly immersed in a water bath to cool down to 100 degrees. The materials from which the ball is made have a thermal conductivity coefficient of 54.94 w / mk, a heat capacity of 7860 kg / m3, a heat capacity of 450 j / kg. Also, the heat transfer coefficient is 41.66 2 / m2. a-)Find the temperature of the ball immersed in water after 10 seconds. b-)Find the time required to cool the ball to 400 degrees.
A ball made of steel alloy with a diameter of 2 millimeters is first heated to 800 degrees and then suddenly immersed in a water bath to cool down to 100 degrees. The materials from which the ball is made have a thermal conductivity coefficient of 54.94 w / mk, a heat capacity of 7860 kg / m3, a heat capacity of 450 j / kg. Also, the heat transfer coefficient is 41.66 2 / m2. a-)Find the temperature of the ball immersed in water after 10 seconds. b-)Find the time required to cool the ball to 400 degrees.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter2: Steady Heat Conduction
Section: Chapter Questions
Problem 2.40P: One end of a 0.3-m-long steel rod is connected to a wall at 204C. The other end is connected to a...
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A ball made of steel alloy with a diameter of 2 millimeters is first heated to 800 degrees and then suddenly immersed in a water bath to cool down to 100 degrees. The materials from which the ball is made have a thermal conductivity coefficient of 54.94 w / mk, a heat capacity of 7860 kg / m3, a heat capacity of 450 j / kg. Also, the heat transfer coefficient is 41.66 2 / m2.
a-)Find the temperature of the ball immersed in water after 10 seconds.
b-)Find the time required to cool the ball to 400 degrees.
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