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percent. The measured product flux is 6.5 gal/day-ft'.
(a) If the flaws are O.Ol-l'm pinholes in the dense layer, how many holes per square centimeter would be needed to account for the lower salt rejection?
(b) What is the corresponding fraction hole area in the dense layer?
(c) What would be the product flux if the pinholes were sealed without increasing the thickness of the membrane? 26.5. Show how the water flux and salt rejection would change with upstream pressure for a perfect cellulose acetate asymmetric membrane and a feed with an osmotic pressure of 20 atm. Use the diffusivity and solubility values for NaCI.
The DNA has N links; each link has a state in which it is closed with energy 0, and a state in which it is open with energy 'e'. The DNA can only unwind from the left; in other words, the sth link can open if all the links to the left (1, 2, 3,..
If the atmospheric pressure is 90 kPa, determine the pressure inside the cylinder.
the cake batter has an average mass of 0.5 kg between before and after baking and the pyrex cake pan has a mass of 0.9
a copper rod 50mm long and 5mm in diameter extends horizontally from a casting at 300 c. the rod is in an air
In a four bar mechanism ABCD, AD is fixed and is 150 mm long. The crank AB is 40 mm long and rotates at 120 rpm clockwise, while the link CD = 80 mm oscillates about D. Link BC and AD are of equal length. Using the analytical/mathematical solution me..
air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine
A 40-mm-long, 2-mm-diameter pin fin is fabricated of an aluminum alloy (k = 140 W/m · K). (a) Determine the fin heat transfer rate for Tb = 50°C, Too = 25°C, h = 1000 W/m2 · K, and an adiabatic tip condition.
find the natural frequency of a pendulum for small angle deflections when the mass of the rod/string is not negligible. (Mass of rod = m, mass of ball = M.
a closed gas turbine unit uses neon as the working fluid. there are two stages of compression with intercooling from
Assuming the volume of the tire remains constant at 0.035 m3, determine the percent increase in the absolute temperature of the air in the tire.
1-what are the adavanteges and disadvantages of project managment?2-what are the key charactristics all project
A steam power plant implements an ideal reheat Rankine cycle. Steam enters the inlet of thigh-pressure turbine at 8 MPa and 450 Celsius and the inlet of the low-pressure turbine at 0.5 MPa and 500 Celsius. The condenser operates at 10 kPa.
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