| Autor: |
H W Davidson, B M Turk |
| Rok vydání: |
1954 |
| Předmět: |
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| Zdroj: |
British Journal of Applied Physics. 5:S55-S60 |
| ISSN: |
0508-3443 |
| DOI: |
10.1088/0508-3443/5/s3/317 |
| Popis: |
The flow of hydrogen, nitrogen and argon through packed beds of lamp-and carbon-blacks has been studied at atmospheric pressure and very low gas velocities. These materials can be packed to cover an appreciable range of porosities and so permit examination of the relationship between porosity and permeability over a wide range. It is found that: (a) the porosity functions suggested by Kozeny, Carman and Arnell are not applicable to such beds; (b) the permeability of the bed is related to the fourth power of the bed density: (c) in the case of undensed blacks the permeability is related to the particle size: while for densed blacks the flow is governed by the width of channels between aggregates. There is reason to hope that this investigation provides the basis of a method for the estimation of the surface area of colloidal carbons. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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