Engineering, 05.05.2020 07:31 zfismael
Cubic shape gel beads of 8 mm on a side contains residual solvent from the gel-casting process. Initially the bead contains 0.20 % of residual solvent uniformly distributed within the polymer. The residual solvent will be removed from the bead by drying the beads in a fluidized bed of fresh air. The air flow though the fluidized bed is very high so that convective mass transfer resistance is negligible (i. e. Kc is extremely high). a. What is the residual concentration at the surface of the bead after 50 hrs? Use, DAB = 4X10-7 cm2 /s. b. If this geometry is approximated as a semi-infinite medium, how long it will take for the solvent to reach 0.18% composition at a depth of 0.1 mm from the surface of the bead. Please solve taking the system as a semi-infinite medium
Answers: 2
Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:20
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
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Engineering, 06.07.2019 03:30
Give three differences between corrosion of metals and the corrosion of ceramics? what is static fatigue?
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Cubic shape gel beads of 8 mm on a side contains residual solvent from the gel-casting process. Init...
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