| Autor: |
van der Merwe, A., Gous, A.G.S., Schutte, C.S.L |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Zdroj: |
South African Journal of Industrial Engineering, Volume: 33, Issue: 3, Pages: 55-68, Published: NOV 2022 |
| Popis: |
Inefficient compressed air systems in deep-level mines deteriorate energy performance and increase operational costs. Leaks, wastages, and misuse are common inefficiencies that necessitate an oversupply of compressed air. It is therefore important to identify where the opportunities for improvement are located. Underground mining equipment can be used to develop a zero-waste compressed air demand profile. This profile can then be simulated for the entire operation to determine a theoretical baseline. Noticeable inefficiencies are then identified by comparing the actual data with the zero-waste baselines. The results of this study showed that the surface operations oversupply compressed air by 15% (10 kg/s of air) per day. This requires an additional 80 MWh of electricity (14.5% of the total) and costs approximately R91 000 per day. The comparison with the zero-waste baselines showed that 7.9 kg/s of air is wasted at the underground levels during drilling periods, highlighting the areas that require mitigation projects to improve the performance while decreasing costs and wastages. Ondoeltreffende saamgeperste lugstelsels in diepvlakmyne verswak energieprestasie en verhoog bedryfskoste. Lekkasies, vermorsing en misbruik is algemene ondoeltreffendhede wat 'n ooraanbod van saamgeperste lug noodsaak. Dit is dus belangrik om te identifiseer waar daar geleenthede vir verbetering is. Ondergrondse mynboutoerusting kan gebruik word om 'n geen-afval-aanvraagprofiel vir saamgeperste lug te ontwikkel. Hierdie profiel kan dan vir die hele operasie gesimuleer word om 'n teoretiese basislyn te bepaal. Opmerklike ondoeltreffendheid word dan geidentifiseer deur die werklike data te vergelyk met die nul-afval basislyne. Die resultate van hierdie studie het getoon dat die oppervlakbewerkings saamgeperste lug met 15% (10 kg/s lug) per dag oorvoorsien. Dit benodig 'n bykomende 80 MWh elektrisiteit (14,5% van die totaal) en kos ongeveer R91 000 per dag. Die vergelyking met die nul-afval basislyne het getoon dat 7,9 kg/s lug tydens boorperiodes op die ondergrondse vlakke vermors word, wat die gebiede beklemtoon wat versagtingsprojekte vereis om die werkverrigting te verbeter terwyl koste en vermorsing verminder word. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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