BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm

Experiments involving measurements of the charged ratio of particles having sizes in the range 10-100 nm that have undergone bipolar diffusion charging, are reported in this thesis. The effect of relative humidity levels of the carrier gas to the process of bipolar diffusion charging was investigate...

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Κύριος συγγραφέας:	Μπαρμπούνης, Κωνσταντίνος
Γλώσσα:	English
Δημοσίευση:	2015
Θέματα:	Αερολυμα, διπολικη φορτιση, νανοσωματιδια, SMPS Aerosol, bipolar, diffusion charging, nanoparticles, charge neutralizer, SMPS
Διαθέσιμο Online:	https://vsmart.lib.aegean.gr/webopac/List.csp?SearchT1=%CE%9C%CF%80%CE%B1%CF%81%CE%BC%CF%80%CE%BF%CF%8D%CE%BD%CE%B7%CF%82&Index1=Keywordsbib&Database=1&SearchMethod=Find_1&SearchTerm1=%CE%9C%CF%80%CE%B1%CF%81%CE%BC%CF%80%CE%BF%CF%8D%CE%BD%CE%B7%CF%82&OpacLanguage=gre&Profile=Default&EncodedRequest=9B901MDF3B7D5A31AB0C96A6AD98&EncodedQuery=9B901MDF3B7D5A31AB0C96A6AD98&Source=SysQR&PageType=Start&PreviousList=RecordListFind&WebPageNr=1&NumberToRetrieve=50&WebAction=NewSearch&StartValue=0&RowRepeat=0&ExtraInfo=&SortIndex=Year&SortDirection=-1&Resource=&SavingIndicator=&RestrType=&RestrTerms=&RestrShowAll=&LinkToIndex= http://hdl.handle.net/11610/14854
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author	Μπαρμπούνης, Κωνσταντίνος
author_facet	Μπαρμπούνης, Κωνσταντίνος
author_sort	Μπαρμπούνης, Κωνσταντίνος
collection	DSpace
description	Experiments involving measurements of the charged ratio of particles having sizes in the range 10-100 nm that have undergone bipolar diffusion charging, are reported in this thesis. The effect of relative humidity levels of the carrier gas to the process of bipolar diffusion charging was investigated. Measurements of the bipolar charging ratio were taken for different values of relative humidity. The experimental results were compared with calculations of the Fuchs’ limiting sphere for the case of bipolar diffusion charging. The values calculated by the model show good agreement with the widely accepted ones provided by Wiedensohler (1988). Results from the measurements show that higher relative humidity in the carrier gas causes smaller charging ratio applied to the particles. Measurements of the charging ratio were also taken in order to determine the effect of altering the charge neutralizer radioactivity. Moreover, measurements were taken for two different aerosol flow rates, in order to estimate if the particles have reached the charge distribution equilibrium. Results show that the radioactivity values investigated, do not provoke significant change on the charging ratio of the particles.
id	oai:hellanicus.lib.aegean.gr:11610-14854
institution	Hellanicus
language	English
publishDate	2015
record_format	dspace
spelling	oai:hellanicus.lib.aegean.gr:11610-148542021-01-18T08:46:57Z BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm Μπαρμπούνης, Κωνσταντίνος Αερολυμα, διπολικη φορτιση, νανοσωματιδια, SMPS Aerosol, bipolar, diffusion charging, nanoparticles, charge neutralizer, SMPS Experiments involving measurements of the charged ratio of particles having sizes in the range 10-100 nm that have undergone bipolar diffusion charging, are reported in this thesis. The effect of relative humidity levels of the carrier gas to the process of bipolar diffusion charging was investigated. Measurements of the bipolar charging ratio were taken for different values of relative humidity. The experimental results were compared with calculations of the Fuchs’ limiting sphere for the case of bipolar diffusion charging. The values calculated by the model show good agreement with the widely accepted ones provided by Wiedensohler (1988). Results from the measurements show that higher relative humidity in the carrier gas causes smaller charging ratio applied to the particles. Measurements of the charging ratio were also taken in order to determine the effect of altering the charge neutralizer radioactivity. Moreover, measurements were taken for two different aerosol flow rates, in order to estimate if the particles have reached the charge distribution equilibrium. Results show that the radioactivity values investigated, do not provoke significant change on the charging ratio of the particles. 2015-11-20T08:19:24Z 2015-11-20T08:19:24Z 2009 https://vsmart.lib.aegean.gr/webopac/List.csp?SearchT1=%CE%9C%CF%80%CE%B1%CF%81%CE%BC%CF%80%CE%BF%CF%8D%CE%BD%CE%B7%CF%82&Index1=Keywordsbib&Database=1&SearchMethod=Find_1&SearchTerm1=%CE%9C%CF%80%CE%B1%CF%81%CE%BC%CF%80%CE%BF%CF%8D%CE%BD%CE%B7%CF%82&OpacLanguage=gre&Profile=Default&EncodedRequest=9B901MDF3B7D5A31AB0C96A6AD98&EncodedQuery=9B901MDF3B7D5A31AB0C96A6AD98&Source=SysQR&PageType=Start&PreviousList=RecordListFind&WebPageNr=1&NumberToRetrieve=50&WebAction=NewSearch&StartValue=0&RowRepeat=0&ExtraInfo=&SortIndex=Year&SortDirection=-1&Resource=&SavingIndicator=&RestrType=&RestrTerms=&RestrShowAll=&LinkToIndex= http://hdl.handle.net/11610/14854 en Μυτιλήνη
spellingShingle	Αερολυμα, διπολικη φορτιση, νανοσωματιδια, SMPS Aerosol, bipolar, diffusion charging, nanoparticles, charge neutralizer, SMPS Μπαρμπούνης, Κωνσταντίνος BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm
title	BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm
title_full	BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm
title_fullStr	BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm
title_full_unstemmed	BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm
title_short	BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm
title_sort	bipolar diffusion charging experimental and theoretical evaluation of the parameters affecting the charge distribution of nanoparticles in the size range 10 100 nm
topic	Αερολυμα, διπολικη φορτιση, νανοσωματιδια, SMPS Aerosol, bipolar, diffusion charging, nanoparticles, charge neutralizer, SMPS
url	https://vsmart.lib.aegean.gr/webopac/List.csp?SearchT1=%CE%9C%CF%80%CE%B1%CF%81%CE%BC%CF%80%CE%BF%CF%8D%CE%BD%CE%B7%CF%82&Index1=Keywordsbib&Database=1&SearchMethod=Find_1&SearchTerm1=%CE%9C%CF%80%CE%B1%CF%81%CE%BC%CF%80%CE%BF%CF%8D%CE%BD%CE%B7%CF%82&OpacLanguage=gre&Profile=Default&EncodedRequest=9B901MDF3B7D5A31AB0C96A6AD98&EncodedQuery=9B901MDF3B7D5A31AB0C96A6AD98&Source=SysQR&PageType=Start&PreviousList=RecordListFind&WebPageNr=1&NumberToRetrieve=50&WebAction=NewSearch&StartValue=0&RowRepeat=0&ExtraInfo=&SortIndex=Year&SortDirection=-1&Resource=&SavingIndicator=&RestrType=&RestrTerms=&RestrShowAll=&LinkToIndex= http://hdl.handle.net/11610/14854
work_keys_str_mv	AT mparmpounēskōnstantinos bipolardiffusionchargingexperimentalandtheoreticalevaluationoftheparametersaffectingthechargedistributionofnanoparticlesinthesizerange10100nm

BIPOLAR DIFFUSION CHARGING : EXPERIMENTAL AND THEORETICAL EVALUATION OF THE PARAMETERS AFFECTING THE CHARGE DISTRIBUTION OF NANOPARTICLES IN THE SIZE RANGE 10-100 nm

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