| Issue |
EPJ Web of Conferences
Volume 67, 2014
EFM13 – Experimental Fluid Mechanics 2013
|
|
|---|---|---|
| Article Number | 02008 | |
| Number of page(s) | 8 | |
| Section | Contributions | |
| DOI | https://doi.org/10.1051/epjconf/20146702008 | |
| Published online | 25 March 2014 | |
https://doi.org/10.1051/epjconf/20146702008
Detection of damage of a filter by visualization of filtration process
Technical University of Liberec, Halkova 917/6, 460 01 Liberec 1, Czech Republic
a e-mail: petr.bilek@tul.cz
b e-mail: petr.sidlof@tul.cz
Published online: 25 March 2014
This paper deals with testing of filters on the basis of visualization of filtration process. A filtration material can be damaged by flow of the filtered medium, high pressure drop and long-term adverse conditions. These negative effects can cause extensive damage of the filtration textile and filtration efficiency decreases. The filter can be also fractured during manufacturing, processing or by improper manipulation. A testing of a purposely damaged filtration textile is described in the article. Experiments were performed on the filtration setup which permits an optical entrance to the position where a sample of filter is placed. A laser sheet is directed into this place. Scattered light from seeding particles in front of and behind the filter is captured by a digital camera. Images from the camera are analyzed and the filtration efficiency versus time and also versus position can be obtained. Measuring chain including light scattering theory and measuring of light intensity by a digital camera are also discussed in the article.
© Owned by the authors, published by EDP Sciences, 2014
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