If by actual count at the final pressure reading there are 40,000 particles greater than 10 microns upstream of the filter and 7500 particles greater than the same size down- stream of the filter, what is the beta ratio?

If by actual count at the final pressure reading there are 40,000 particles greater than 10 microns upstream of the filter and 7500 particles greater than the same size down- stream of the filter, what is the beta ratio?

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.2DP

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Concept explainers

Atomic diffusion in solids

In material science, diffusion can take place in solid, liquid, and gases. In solids, atomic diffusion can take place with the help of thermally activated and randomly vibrating atoms. The atomic diffusion in solids is complex and very slow in comparison to atomic diffusion in liquids and gases because the interatomic distance between the atoms is smaller in solids as compared to liquids and gases.

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If by actual count at the final pressure reading there are 40,000 particles greater than 10
microns upstream of the filter and 7500 particles greater than the same size down-
stream of the filter, what is the beta ratio?

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