Dusty air at a fertilizer plant flows through a 70%-efficient cyclone and then through an ESP. The inlet air to the cyclone has a dust loading of 50 grains/cubic foot. in order to meet a control standard of 98.5% collection efficiency for the fertilizer plant as a whole, what is the allowable concentration of dust (in grains/cubic foot) in the air that exits from the ESP?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
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Dusty air at a fertilizer plant flows through a 70%-efficient cyclone and then through an ESP. The inlet air to the cyclone has a dust loading of 50 grains/cubic foot. in order to meet a control standard of 98.5% collection efficiency for the fertilizer plant as a whole, what is the allowable concentration of dust (in grains/cubic foot) in the air that exits from the ESP?
 

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