A reverse osmosis unit for purifying brackish water has about 900,000 hollow fibers that permit the diffusion of water but reject most of the salt The fibers are 85 m in outside diameter, 42 m in inside diameter, and about 3 ft long The average flow through the tubes is 2,000 gal of water every 24 ...

To calculate the pressure drop within an individual hollow fiber in a reverseosmosis unit you can us ...

A reverse-osmosis unit for purifying brackish water has about 900,000 hollow fibers that permit the diffusion of

Question:

A reverse-osmosis unit for purifying brackish water has about 900,000 hollow fibers that permit the diffusion of water but reject most of the salt. The fibers are 85 μm in outside diameter, 42 μm in inside diameter, and about 3 ft long. The average flow through the tubes is 2,000 gal of water every 24 h when the feed pressure is 400 psig. What is the pressure drop within an individual fiber from the feed end to the discharge end?

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