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Unformatted text preview: Thanksgiving break problem This problem will be part of the final exam, so you are instructed to work the problem entirely on your own. I will assign the rest of the final exam problems after the break, and they will be due the last day of finals week. The situation is as follows: two cubic containers, of volume V = 16 cm 3 , are filled with liquid water. The water in container A is at an initial temperature of T A 1 = 25 ◦ C, whereas container B is at T B 1 = 80 ◦ C. Both containers are now placed in a freezer, with ambient conditions of T ∞ =- 15 ◦ C and a relative humidity of zero. By performing a combined heat and mass transfer analysis, predict the time required for the temperature of each system to reach T 2 = 0 ◦ C, and the final masses of each system at the freezing point. In your analysis you can assume constant thermophysical properties of the air and the water vapor. You can also use a lumped–capacity model on the liquid water, i.e., take the water to be at a uniform temperaturecan also use a lumped–capacity model on the liquid water, i....
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This note was uploaded on 09/24/2011 for the course MECH 7220 taught by Professor Staff during the Fall '10 term at Auburn University.
- Fall '10
- Heat Transfer