Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions

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dc.contributor.advisorRandall, Dyllon Gen_ZA
dc.contributor.advisorRodriguez-Pascual , Marcosen_ZA
dc.contributor.advisorLewis, Alison Emslieen_ZA
dc.contributor.authorKapembwa, Michaelen_ZA
dc.date.accessioned2015-01-03T18:16:21Z
dc.date.available2015-01-03T18:16:21Z
dc.date.issued2013en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractResearch into ice crystallization processes is an important area of study. The desire to improve product quality and efficiency of processes involving ice crystallization in industries such as desalination by freezing, freeze drying, freeze concentration and freeze crystallization for food processing, requires insight into the ice growth mechanisms. More so, a novel technology called Eutectic Freeze Crystallization, where water is recovered in the form of ice, requires that ice crystals are of high purity as this directly determines the quality of the water obtained. During ice crystallization, ice growth mechanisms play an important role in determining the structure, size and morphology of ice which have an effect on separation processes and product purity. Heat and mass transfer play a fundamental role in ice growth processes as they affect the thermodynamics and kinetics of the crystallization process. Ice growth experiments were carried out in pure water, in 8.4 wt% and 16.8 wt% magnesium sulphate and in 8.4 wt% sodium nitrate using a 10x5x31 mm test cell made of Plexi-glass®. The Colour Schlieren optical technique was used to conduct the experiments. This is because of its capability to map refractive index gradients related to either temperature or/and concentration gradients of the solution during crystal growth.en_ZA
dc.identifier.apacitationKapembwa, M. (2013). <i>Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/11180en_ZA
dc.identifier.chicagocitationKapembwa, Michael. <i>"Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2013. http://hdl.handle.net/11427/11180en_ZA
dc.identifier.citationKapembwa, M. 2013. Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kapembwa, Michael AB - Research into ice crystallization processes is an important area of study. The desire to improve product quality and efficiency of processes involving ice crystallization in industries such as desalination by freezing, freeze drying, freeze concentration and freeze crystallization for food processing, requires insight into the ice growth mechanisms. More so, a novel technology called Eutectic Freeze Crystallization, where water is recovered in the form of ice, requires that ice crystals are of high purity as this directly determines the quality of the water obtained. During ice crystallization, ice growth mechanisms play an important role in determining the structure, size and morphology of ice which have an effect on separation processes and product purity. Heat and mass transfer play a fundamental role in ice growth processes as they affect the thermodynamics and kinetics of the crystallization process. Ice growth experiments were carried out in pure water, in 8.4 wt% and 16.8 wt% magnesium sulphate and in 8.4 wt% sodium nitrate using a 10x5x31 mm test cell made of Plexi-glass®. The Colour Schlieren optical technique was used to conduct the experiments. This is because of its capability to map refractive index gradients related to either temperature or/and concentration gradients of the solution during crystal growth. DA - 2013 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 T1 - Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions TI - Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions UR - http://hdl.handle.net/11427/11180 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/11180
dc.identifier.vancouvercitationKapembwa M. Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2013 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/11180en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Chemical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherEngineeringen_ZA
dc.titleHeat and mass transfer effects of ice growth mechanisms in water and aqueous solutionsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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