Engineering, 05.05.2020 16:32 wbrandi118
A common process for increasing the moisture content of air is to bubble it through a column of water. The air bubbles are assumed to be spheres having a radius of 1.0mm, and are in thermal equilibrum with the surrounding water at 298K. The vapor pressure of water is 0.03 atm at 298K, and the total pressure of the gas inside the air bubble is 1.0 atm.
a) Draw a picture of the physical system and list at least five reasonable assumptions for the mass transfer aspects of the water evaporation process. State what coordinate system should be used.
b)What are the simplified differential forms of Fick's flux equation for water vapor (species A) and the general differential equation for mass transfer in terms of concentration cA ?
c) Propose reasonable boundary and initial conditions
Answers: 3
Engineering, 03.07.2019 15:10, breannaasmith1122
Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.
Answers: 1
Engineering, 04.07.2019 18:10, genyjoannerubiera
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
Engineering, 04.07.2019 18:10, samanthabutryn
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
A common process for increasing the moisture content of air is to bubble it through a column of wate...
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