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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Efficient use of energy in the ventilation and cooling of mines
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Efficient use of energy in the ventilation and cooling of mines

机译：在矿井的通风和冷却中有效利用能源

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Escalating energy and electricity costs have become one of the largest drivers of expenditure in mining operations. Over the last eight years, energy costs have tripled when expressed as a percentage of total expenses in South African mines. In an effort to manage and reduce electricity costs, energy management strategies can be developed, inefficient operating units replaced, and the operation of energy-consuming components of ventilation systems optimized.Power consumption on mines is controlled mainly by three strategies, namely load clipping, by which energy use is reduced for certain parts of the day; load shifting, by which energy use is shifted to other parts of the day; and energy efficiency, by which energy use is reduced permanently. In this paper several projects that were implemented using the first two strategies of load clipping and load shifting are investigated. The actual and potential savings that can be achieved by implementing such energy-saving interventions are presented.To reduce the operating costs of ventilating and cooling underground mines permanently, system optimization studies must be completed. Methods that can be used to reduce energy usage by optimizing cooling and ventilation systems are described, and network simulation models that accurately reflect the current and planned ventilation conditions are discussed. These models are then used to examine various options for improving the overall ventilation and cooling strategy. Different optimization scenarios can be simulated, and this assists the design engineer in obtaining the most energy-efficient system that will satisfy design workplace conditions. The final outcome is a reduction in operating costs, which can result in better operating margins and an extension of the life of mine.
机译：不断上升的能源和电力成本已成为采矿业务支出的最大驱动因素之一。在过去八年中，以南非矿山总支出的百分比表示，能源成本增加了两倍。为了管理和降低电力成本，可以制定能源管理策略，更换低效的运营单位，并优化通风系统的耗能组件的运行。矿山的功耗主要由三种策略控制，即负载削减，通过这种方式可以减少一天中某些时段的能源使用;负荷转移，将能源消耗转移到一天中的其他时间;能源效率，从而永久减少能源使用。在本文中，研究了使用前两种负荷削减和负荷转移策略实施的项目。提出了通过实施此类节能措施可以实现的实际和潜在节省。为了永久降低地下矿井的通风和冷却成本，必须完成系统优化研究。描述了可用于通过优化冷却和通风系统减少能耗的方法，并讨论了可准确反映当前和计划的通风条件的网络仿真模型。然后使用这些模型来检查各种选项，以改善整体通风和冷却策略。可以模拟不同的优化方案，这有助于设计工程师获得满足设计工作场所条件的最节能系统。最终结果是降低了运营成本，从而可以提高运营利润率并延长矿山的使用寿命。

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