A common process for increasing the moisture content of air is to bubble it through a column of water. The air bubbles are assum
ed 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
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
1 answer:
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Answer:
See explaination
Explanation:
In the below answer "Z" is the output. please kindly check attachment for further details.
When z=1 , the vending machine gives snacks
z=0 , the vending machine doesn't give snacks.
And z becomes 1( high) only when the machine gets 20 cents or more than 20 cents. Since the machine doesn't give change, after giving snacks it will restart from initial state A (where no coins were put).
