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Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemical Engineering
2015
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| _version_ | 1867613294559232000 |
|---|---|
| access_status_str | Open Access |
| author | Kapembwa, Michael |
| author2 | Randall, Dyllon G |
| author_browse | Kapembwa, Michael Randall, Dyllon G |
| author_facet | Randall, Dyllon G Kapembwa, Michael |
| author_sort | Kapembwa, Michael |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/11180 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:51.607Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/11180 Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions Kapembwa, Michael Randall, Dyllon G Rodriguez-Pascual , Marcos Lewis, Alison Emslie Engineering Includes bibliographical references. 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. 2015-01-03T18:16:21Z 2015-01-03T18:16:21Z 2013 Master Thesis Masters MSc http://hdl.handle.net/11427/11180 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Engineering Kapembwa, Michael Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| thesis_degree_str | Master's |
| title | Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| title_full | Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| title_fullStr | Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| title_full_unstemmed | Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| title_short | Heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| title_sort | heat and mass transfer effects of ice growth mechanisms in water and aqueous solutions |
| topic | Engineering |
| url | http://hdl.handle.net/11427/11180 |
| work_keys_str_mv | AT kapembwamichael heatandmasstransfereffectsoficegrowthmechanismsinwaterandaqueoussolutions |