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Improved Performance with Layer Orientation Incorporated Pleated Media on Coalescence Filtration

Bharadwaj, Rahul
http://rave.ohiolink.edu/etdc/view?acc_num=akron1280828562

Abstract Details

2010, Doctor of Philosophy, University of Akron, Chemical Engineering.
Experimental observations show fiber orientation and layer orientation in filter media effect the permeability and the separation efficiency of coalescing filters. The effects of fiber orientation have been studied by various industries including polymer, paper and textiles, to enhance their product lines. This has also been proven beneficial to the filtration industry because orientation of fibers can lead to lower pressure drop. The main objective of this work is to study the effects of layer orientations and test its performance. This technique is an alternative to using electric field for making oriented fiber media. It incorporates stacking micro fiber sheets at different angles (0,30,45,60 and 90). For capture of liquid droplets, the decrease in pressure drop obtained is offset by the decrease in capture efficiency, resulting in nearly constant quality factor regardless of fiber orientation. However, in coalescing filter media this method shows improvement in liquid drainage from the filter and can improve the quality factor from 20 to 60%. In coalescing filter media the fiber orientation can have an added benefit of reducing the liquid saturation in the filter media, which leads to an improved quality factor for the filter media and can be very useful in making self-cleaning filters. The stacking sheets can be extended to a pleated structure, which is relatively easier to construct from an industrial point of view. However, it is challenging to control the angle of the pleats during the construction of the media. Therefore varying the angle of the pleated structure with respect to the flow can surmount this problem. Another filter design is proposed which can mimic the angled pleated design by keeping the pleating angle constant (at zero degree) and changing the angle of the filter holder. Both designs have higher performance compared to a regular pleated media. Multiphase continuum equations are used to model the flow through the media to calculate the velocity and pressure profile through a pleated media to compare with the experimental results.
George Chase, Dr (Advisor)
244 p.
Chemical Engineering
Coalescence Filtration; layer orientation; fiber orientation; fibrous filtration; aerosols; pleated filter media; drop motion

Recommended Citations

Citations

  • Bharadwaj, R. (2010). Improved Performance with Layer Orientation Incorporated Pleated Media on Coalescence Filtration [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1280828562

    APA Style (7th edition)

  • Bharadwaj, Rahul. Improved Performance with Layer Orientation Incorporated Pleated Media on Coalescence Filtration. 2010. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1280828562.

    MLA Style (8th edition)

  • Bharadwaj, Rahul. "Improved Performance with Layer Orientation Incorporated Pleated Media on Coalescence Filtration." Doctoral dissertation, University of Akron, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1280828562

    Chicago Manual of Style (17th edition)

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© 2010, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.