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Capital cost targets for the optimum synthesis of mass exchange networks
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2014
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| _version_ | 1867613165799342080 |
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| access_status_str | Open Access |
| author | Hallale, Nick |
| author2 | Fraser, Duncan McKenzie |
| author_browse | Fraser, Duncan McKenzie Hallale, Nick |
| author_facet | Fraser, Duncan McKenzie Hallale, Nick |
| author_sort | Hallale, Nick |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/9559 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:48.735Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| 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:11427/9559 Capital cost targets for the optimum synthesis of mass exchange networks Hallale, Nick Fraser, Duncan McKenzie Chemical Engineering Includes bibliographical references. Pinch Technology is very well developed for heat exchanger network synthesis (HENS). It is possible to predict, on thermodynamic grounds, the minimum energy, capital and total costs for a network. These targets are set before any design and can also be optimised at this stage. Special design techniques exist which allow the targets to be met - or closely approached - in practice. The approach has recently been extended to mass exchange network synthesis (MENS). However, prior to this study, it was not as well developed for this field as it had been for HENS. Only targets for the minimum operating costs could be set and then achieved in design. Capital cost targets for MENS did not exist. The usual approach was to use the minimum number of mass exchange units - which could be targeted - as an attempt to minimise the capital cost of the network. However, this is not sufficient since the exchanger sizes are also important. This meant that there was no guarantee that the capital cost and hence total cost had been truly minimised. This thesis has developed a new method for targeting the minimum capital costs for mass exchange networks. The method is simple and based on insight, rather than relying on a mathematical 'black-box'. New graphical tools, the y-* composite curve plot and the y-y* composite curve plot have been introduced for this purpose and these allow the minimum exchanger sizes to be predicted before design. The new capital cost targets can be traded off against the established operating cost targets in order to optimise the total cost with no design being necessary. 2014-11-11T12:57:13Z 2014-11-11T12:57:13Z 1998 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/9559 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Hallale, Nick Capital cost targets for the optimum synthesis of mass exchange networks |
| thesis_degree_str | Doctoral |
| title | Capital cost targets for the optimum synthesis of mass exchange networks |
| title_full | Capital cost targets for the optimum synthesis of mass exchange networks |
| title_fullStr | Capital cost targets for the optimum synthesis of mass exchange networks |
| title_full_unstemmed | Capital cost targets for the optimum synthesis of mass exchange networks |
| title_short | Capital cost targets for the optimum synthesis of mass exchange networks |
| title_sort | capital cost targets for the optimum synthesis of mass exchange networks |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/9559 |
| work_keys_str_mv | AT hallalenick capitalcosttargetsfortheoptimumsynthesisofmassexchangenetworks |