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A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation
Thesis (MEng)--Stellenbosch University, 2026.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2026
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| _version_ | 1867613919072223232 |
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| access_status_str | Open Access |
| author | Du Randt, Johannes Claudius |
| author2 | Schutte, Corne |
| author_browse | Du Randt, Johannes Claudius Schutte, Corne |
| author_facet | Schutte, Corne Du Randt, Johannes Claudius |
| author_sort | Du Randt, Johannes Claudius |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--Stellenbosch University, 2026. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/135774 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:43:47.401Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2026 |
| publishDateRange | 2026 |
| publishDateSort | 2026 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/135774 A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation Du Randt, Johannes Claudius Schutte, Corne Van Laar, Jean Stellenbosch University. Faculty of Engineering. Dept. of Industrial Engineering. Thesis (MEng)--Stellenbosch University, 2026. Du Randt, J. C. 2026. A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation. Unpublished masters thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/items/72c93ac1-dfab-46a7-956b-11130b959367 Increased economic pressure and rising electricity costs are driving energy efficiency initiatives on deep-level mines. One of the major energy consumers on deep-level mines is the refrigeration system, which supplies chilled water for cooling the underground working environment. Due to the outdated nature of these systems, and their fixed supply capacities, they are prone to energy wastage through inefficient operation. Previous studies have suggested energy- or exergy analyses to improve performance; however, a combined approach has not been implemented on a deep-level mine. A methodical approach is needed to apply thermodynamic analysis techniques to refrigeration systems for improved performance. This study develops and applies such a method to a South African mine’s refrigeration system. This application results in a lower condenser temperature with an increase in the COP of the refrigeration plants, with no significant capital input or additional infrastructure needed. This translates to an annual cost saving of R1.35 million for the mining shaft. Masters 2026-04-10T06:49:22Z 2026-04-10T06:49:22Z 2026-03 Thesis https://scholar.sun.ac.za/handle/10019.1/135774 en Stellenbosch University 85 pages : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Du Randt, Johannes Claudius A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation |
| title | A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation |
| title_full | A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation |
| title_fullStr | A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation |
| title_full_unstemmed | A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation |
| title_short | A Combined Energy–Exergy Approach for Improving Refrigeration Systems in Deep-Level Gold Mines: Method Development and Case Study Validation |
| title_sort | combined energy exergy approach for improving refrigeration systems in deep level gold mines method development and case study validation |
| url | https://scholar.sun.ac.za/handle/10019.1/135774 |
| work_keys_str_mv | AT durandtjohannesclaudius acombinedenergyexergyapproachforimprovingrefrigerationsystemsindeeplevelgoldminesmethoddevelopmentandcasestudyvalidation AT durandtjohannesclaudius combinedenergyexergyapproachforimprovingrefrigerationsystemsindeeplevelgoldminesmethoddevelopmentandcasestudyvalidation |