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dc.contributor.authorVosloo, Jan
dc.contributor.authorLiebenberg, Leon
dc.contributor.authorVelleman, Douglas
dc.date.accessioned2013-10-31T07:29:15Z
dc.date.available2013-10-31T07:29:15Z
dc.date.issued2012
dc.identifier.citationVosloo, J. et al. 2012. Case study: energy savings for a deep-mine water reticulation system. Applied energy, 92:328-335. [https://doi.org/10.1016/j.apenergy.2011.10.024]en_US
dc.identifier.issn0306-2619
dc.identifier.urihttp://hdl.handle.net/10394/9401
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0306261911006787
dc.identifier.urihttps://doi.org/10.1016/j.apenergy.2011.10.024
dc.description.abstractIn deep level mining, water reticulation systems are one of the major consumers of electricity. The refrigeration plants, together with the underground water supply and dewatering systems are integrated to form one complete water reticulation system. This integrated water reticulation system extracts hot water from the mine, cools it down and returns the cold water to the various underground mining levels. As much as 42% of the total energy consumption on a typical deep level gold mine can be ascribed to the water reticulation system. Reducing the overall water demand and therefore electricity costs will depend on climatic conditions, operating strategy, water reservoir capacity, and electricity tariff rates. In this paper, a method is presented to determine the optimum water reticulation strategy for different electricity tariffs. This model minimises the total operating cost of the water reticulation system by a trade-off between the cost involved in providing effective pump control and the savings achieved under a specified electricity tariff. A case study of a typical deep mining operation shows that a reduction of 65% during peak demand and 2% overall electricity reduction is possible by adopting this new control strategy. The corresponding savings in operating cost is 13%. Techniques were developed to integrate, simulate, optimise and control all components of the water reticulation system. This will allow for a quick assessment of the effect of individual components on the complete system. By integrating all these components into a single system, the operation of each component can be assessed and optimally controlled without adversely affecting other operations of the system.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectLoad-shiften_US
dc.subjectdemand-side managementen_US
dc.subjectdeep minesen_US
dc.subjectwater reticulationen_US
dc.titleCase study: energy savings for a deep-mine water reticulation systemen_US
dc.typeArticleen_US
dc.contributor.researchID12317845 - Vosloo, Jan Corné
dc.contributor.researchID12850071 - Liebenberg, Leon


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