Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.458403
Title: The effect of fibre configuration on the efficiency of aerosol filtration
Author: Harrop, J. A.
Awarding Body: Loughborough University of Technology
Current Institution: Loughborough University
Date of Award: 1969
Availability of Full Text:
Access from EThOS:
Access from Institution:
Abstract:
Experimental investigations are carried out using model and real filters. A monodispersed aerosol, produced by a spinning top generator is used to test the filters, mass determinations being carried out by the sodium flame technique. Postulating, but not proving, that adhesion is responsible for the deviation between the theoretical results, based on the Rappel cellular flow model, and experimental results, agreement between theory and experiment is demonstrated. It is proved that model and real filters can be corrected for their deviation from ideal banks of parallel fibres, by utilizing their experimental drag characteristics. The filter efficiency is reduced at low values of air relative humidity, but increased by particle charge if the inertia parameter is small. Fibre configuration, as embodied in the packing effect, only slightly affects the single fibre efficiency in the inertial region. There is an increase in the single fibre efficiency between 1 and 3% packing, little effect between 3 and 9%, and further increase at 11%. Lack of particlefibre adhesion is postulated as explaining this phenomena.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.458403  DOI: Not available
Share: