{"id":{"repo_id":"queens","oai_identifier":"oai:queensu.scholaris.ca:1974/977"},"canonical_url":"https://search.dev.ndltd.org/etd/queens/oai:queensu.scholaris.ca:1974/977","repository":{"repo_id":"queens","name":"Queens University","base_url":"https://qspace.library.queensu.ca/server/oai/request"},"display":{"title":"Analysis of a Flat-Plate, Liquid-Desiccant, Dehumidifier and Regenerator","abstract":"A numerical model for isothermal and non-isothermal flat-plate liquid-desiccant dehumidifiers and regenerators was developed and implemented. The two-dimensional model takes into account the desiccant, water and air flow streams. A parametric analysis was performed to evaluate the influence of some of the most important operational parameters on mass transfer performance, such as flow configuration, water mass flow rate and inlet temperature, and desiccant mass flow rate. The results indicate that the water temperature and mass flow rate have a strong effect on the performance of the dehumidifier and regenerator, with the isothermal wall case acting as an upper limiting case. Increasing the desiccant mass flow rate improves the water transfer performance, but the improvement is asymptotic with mass flow rate. An experimental rig with a single channel prototype was also built and tests were run for 18 different cases, with varying water mass flow rate, desiccant mass flow rate and flow configuration. The results show trends similar to those observed in the numerical results. However, the discrepancies between the numerical and experimental results are larger than the estimated experimental uncertainty at a 95% confidence level. There is some indication that poor desiccant wetting of the channel walls was partially responsible for the discrepancies.","abstract_html":"A numerical model for isothermal and non-isothermal flat-plate liquid-desiccant dehumidifiers and regenerators was developed and implemented. The two-dimensional model takes into account the desiccant, water and air flow streams. A parametric analysis was performed to evaluate the influence of some of the most important operational parameters on mass transfer performance, such as flow configuration, water mass flow rate and inlet temperature, and desiccant mass flow rate. The results indicate that the water temperature and mass flow rate have a strong effect on the performance of the dehumidifier and regenerator, with the isothermal wall case acting as an upper limiting case. Increasing the desiccant mass flow rate improves the water transfer performance, but the improvement is asymptotic with mass flow rate. An experimental rig with a single channel prototype was also built and tests were run for 18 different cases, with varying water mass flow rate, desiccant mass flow rate and flow configuration. The results show trends similar to those observed in the numerical results. However, the discrepancies between the numerical and experimental results are larger than the estimated experimental uncertainty at a 95% confidence level. There is some indication that poor desiccant wetting of the channel walls was partially responsible for the discrepancies.","abstract_has_math":false,"creators":["Mesquita, Lucio Cesar De Souza"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Mechanical and Materials Engineering","school":null,"contributors":[],"advisors":["Harrison, Stephen J."],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008-01-14T18:53:01Z","date_published":"2008-01-14T18:53:01Z","updated_at":"2026-07-27T20:35:23Z","subjects":["liquid desiccant","solar energy","air-conditioning","dehumidification"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1974/977","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Mechanical and Materials Engineering"]},{"key":"dc:contributor.supervisor","label":"Supervisor","values":["Harrison, Stephen J."]},{"key":"dc:creator","label":"Author","values":["Mesquita, Lucio Cesar De Souza"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2007-12-31 22:12:39.184"]},{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2008-01-14T18:53:01Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2008-01-14T18:53:01Z"]},{"key":"dc:date.issued","label":"Date","values":["2008-01-14T18:53:01Z"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["liquid desiccant","solar energy","air-conditioning","dehumidification"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/1974/977"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thesis (Ph.D, Mechanical and Materials Engineering) -- Queen's University, 2007-12-31 22:12:39.184"]},{"key":"dc:description.abstract","label":"Abstract","values":["A numerical model for isothermal and non-isothermal flat-plate liquid-desiccant dehumidifiers and regenerators was developed and implemented. The two-dimensional model takes into account the desiccant, water and air flow streams. A parametric analysis was performed to evaluate the influence of some of the most important operational parameters on mass transfer performance, such as flow configuration, water mass flow rate and inlet temperature, and desiccant mass flow rate. The results indicate that the water temperature and mass flow rate have a strong effect on the performance of the dehumidifier and regenerator, with the isothermal wall case acting as an upper limiting case. Increasing the desiccant mass flow rate improves the water transfer performance, but the improvement is asymptotic with mass flow rate. An experimental rig with a single channel prototype was also built and tests were run for 18 different cases, with varying water mass flow rate, desiccant mass flow rate and flow configuration. The results show trends similar to those observed in the numerical results. However, the discrepancies between the numerical and experimental results are larger than the estimated experimental uncertainty at a 95% confidence level. There is some indication that poor desiccant wetting of the channel walls was partially responsible for the discrepancies."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["PhD"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Analysis of a Flat-Plate, Liquid-Desiccant, Dehumidifier and Regenerator"]}]}],"canonical_facts":{"dc:contributor.department":["Mechanical and Materials Engineering"],"dc:contributor.supervisor":["Harrison, Stephen J."],"dc:creator":["Mesquita, Lucio Cesar De Souza"],"dc:date":["2007-12-31 22:12:39.184"],"dc:date.accessioned":["2008-01-14T18:53:01Z"],"dc:date.available":["2008-01-14T18:53:01Z"],"dc:date.issued":["2008-01-14T18:53:01Z"],"dc:description":["Thesis (Ph.D, Mechanical and Materials Engineering) -- Queen's University, 2007-12-31 22:12:39.184"],"dc:description.abstract":["A numerical model for isothermal and non-isothermal flat-plate liquid-desiccant dehumidifiers and regenerators was developed and implemented. The two-dimensional model takes into account the desiccant, water and air flow streams. A parametric analysis was performed to evaluate the influence of some of the most important operational parameters on mass transfer performance, such as flow configuration, water mass flow rate and inlet temperature, and desiccant mass flow rate. The results indicate that the water temperature and mass flow rate have a strong effect on the performance of the dehumidifier and regenerator, with the isothermal wall case acting as an upper limiting case. Increasing the desiccant mass flow rate improves the water transfer performance, but the improvement is asymptotic with mass flow rate. An experimental rig with a single channel prototype was also built and tests were run for 18 different cases, with varying water mass flow rate, desiccant mass flow rate and flow configuration. The results show trends similar to those observed in the numerical results. However, the discrepancies between the numerical and experimental results are larger than the estimated experimental uncertainty at a 95% confidence level. There is some indication that poor desiccant wetting of the channel walls was partially responsible for the discrepancies."],"dc:description.degree":["PhD"],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/1974/977"],"dc:language.iso":["eng"],"dc:subject":["liquid desiccant","solar energy","air-conditioning","dehumidification"],"dc:title":["Analysis of a Flat-Plate, Liquid-Desiccant, Dehumidifier and Regenerator"],"dc:type":["thesis"]},"updated_at":"2026-07-27T20:35:23Z"}