{"id":{"repo_id":"southwales","oai_identifier":"oai:pure.atira.dk:studenttheses/2203def1-c89f-46f2-8200-5f724da46f70"},"canonical_url":"https://search.dev.ndltd.org/etd/southwales/oai:pure.atira.dk:studenttheses/2203def1-c89f-46f2-8200-5f724da46f70","repository":{"repo_id":"southwales","name":"University of South Wales","base_url":"https://pure.southwales.ac.uk/ws/oai"},"display":{"title":"Mass Transfer Studies In A 'Finpak' Distillation Column","abstract":"This thesis presents the results of an investigation of the behaviour of a new form of rectification device under vacuum distillation conditions.
The operating conditions were so varied as to not only provide a measure of 'Finpak' column efficiency under a variety of such conditions, but also to illustrate the effect such variables have on the overall distillation efficiency.
The results of the research indicate that the 'Finpak' fractionating column is a suitable contacting device for the investigation of mass transfer processes inhere low liquid rates are employed, such as in vacuum distillation.
With regards to the vacuum distillation process it was shown that column efficiency improved on reducing stillhead pressure, and it is proposed that the increase in efficiency occurs as a result of a reduction in the resistance to mass transfer within the liquid film, which may be as high as 9O % of the total resistance to mass transfer under the low liquid flow conditions employed throughout the study.","abstract_html":"This thesis presents the results of an investigation of the behaviour of a new form of rectification device under vacuum distillation conditions.<br/><br/>The operating conditions were so varied as to not only provide a measure of 'Finpak' column efficiency under a variety of such conditions, but also to illustrate the effect such variables have on the overall distillation efficiency.<br/><br/>The results of the research indicate that the 'Finpak' fractionating column is a suitable contacting device for the investigation of mass transfer processes inhere low liquid rates are employed, such as in vacuum distillation.<br/><br/>With regards to the vacuum distillation process it was shown that column efficiency improved on reducing stillhead pressure, and it is proposed that the increase in efficiency occurs as a result of a reduction in the resistance to mass transfer within the liquid film, which may be as high as 9O % of the total resistance to mass transfer under the low liquid flow conditions employed throughout the study.","abstract_has_math":false,"creators":["Llewellyn, W."],"institution":"Polytechnic of Wales","degree_name":"Doctoral Thesis","degree_level":"Student thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1976,"date_issued":"1976","date_published":"1976","updated_at":"2026-07-24T04:39:18Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:pure.atira.dk:studenttheses/2203def1-c89f-46f2-8200-5f724da46f70"],"render_values":[{"text":"oai:pure.atira.dk:studenttheses/2203def1-c89f-46f2-8200-5f724da46f70","href":null,"code":true}]}]},"links":{"outbound_url":"https://pure.southwales.ac.uk/en/studentTheses/2203def1-c89f-46f2-8200-5f724da46f70","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Llewellyn, W."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1976"]},{"key":"dc:date.issued","label":"Date","values":["1976"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["Polytechnic of Wales"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://pure.southwales.ac.uk/en/studentTheses/2203def1-c89f-46f2-8200-5f724da46f70"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Student thesis"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["Doctoral Thesis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:pure.atira.dk:studenttheses/2203def1-c89f-46f2-8200-5f724da46f70","https://pure.southwales.ac.uk/en/studentTheses/2203def1-c89f-46f2-8200-5f724da46f70"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://pure.southwales.ac.uk/files/2741162/W._Llewellyn_1976_2059773.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis presents the results of an investigation of the behaviour of a new form of rectification device under vacuum distillation conditions.
The operating conditions were so varied as to not only provide a measure of 'Finpak' column efficiency under a variety of such conditions, but also to illustrate the effect such variables have on the overall distillation efficiency.
The results of the research indicate that the 'Finpak' fractionating column is a suitable contacting device for the investigation of mass transfer processes inhere low liquid rates are employed, such as in vacuum distillation.
With regards to the vacuum distillation process it was shown that column efficiency improved on reducing stillhead pressure, and it is proposed that the increase in efficiency occurs as a result of a reduction in the resistance to mass transfer within the liquid film, which may be as high as 9O % of the total resistance to mass transfer under the low liquid flow conditions employed throughout the study."]},{"key":"dc:title","label":"Title","values":["Mass Transfer Studies In A 'Finpak' Distillation Column"]}]}],"canonical_facts":{"dc:creator":["Llewellyn, W."],"dc:date":["1976"],"dc:date.issued":["1976"],"dc:description.abstract":["This thesis presents the results of an investigation of the behaviour of a new form of rectification device under vacuum distillation conditions.
The operating conditions were so varied as to not only provide a measure of 'Finpak' column efficiency under a variety of such conditions, but also to illustrate the effect such variables have on the overall distillation efficiency.
The results of the research indicate that the 'Finpak' fractionating column is a suitable contacting device for the investigation of mass transfer processes inhere low liquid rates are employed, such as in vacuum distillation.
With regards to the vacuum distillation process it was shown that column efficiency improved on reducing stillhead pressure, and it is proposed that the increase in efficiency occurs as a result of a reduction in the resistance to mass transfer within the liquid film, which may be as high as 9O % of the total resistance to mass transfer under the low liquid flow conditions employed throughout the study."],"dc:identifier":["oai:pure.atira.dk:studenttheses/2203def1-c89f-46f2-8200-5f724da46f70","https://pure.southwales.ac.uk/en/studentTheses/2203def1-c89f-46f2-8200-5f724da46f70"],"dc:identifier.uri":["https://pure.southwales.ac.uk/files/2741162/W._Llewellyn_1976_2059773.pdf"],"dc:language":["eng"],"dc:publisher.institution":["Polytechnic of Wales"],"dc:relation.isreferencedby":["https://pure.southwales.ac.uk/en/studentTheses/2203def1-c89f-46f2-8200-5f724da46f70"],"dc:title":["Mass Transfer Studies In A 'Finpak' Distillation Column"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["Student thesis"],"dc:type.qualificationname":["Doctoral Thesis"]},"updated_at":"2026-07-24T04:39:18Z"}