Technical and economic evaluation of fluorescent and LED luminaires in underground mining. A case study: New mine level of El Teniente

Chueco, Francisco; López, Fernando Rodríguez; Bobadilla, Miguel

doi:10.1016/j.enbuild.2015.02.022

Cited by 14 publications

(7 citation statements)

References 13 publications

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“…In the Metropolitan Region, domestic use accounts for 15.4% of demand, agriculture still dominates, however, accounting for 68.4% of demand. The proportional demand for mine consumption increases again in region VI where El Teniente, the world's largest underground copper mine is located [38]. Mining in this region accounts for 8.3% of demand compared to 0.4% in the Metropolitan Region where little mining exists.…”

Section: Contribution Of Different Sectors To Water Demandmentioning

confidence: 93%

Water Scarcity and the Impact of the Mining and Agricultural Sectors in Chile

et al. 2016

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Abstract:Chile contains some of the driest areas in the world, yet human activities in these areas require large volumes of water, the result is regions experiencing high water scarcity leading to environmental degradation, conflicts and reduced industrial productivity. The aim of this paper was to quantify the water scarcity in the central and northern regions by calculating the water scarcity index-the ratio of annual water demand to availability. A focus of the paper was to determine the impact of the main industries in each region and investigate the benefit of implementing water reduction strategies within these industries. The water resources of each investigated region were found to be greatly overexploited and particularly so in the region of Antofagasta. The mining industry was found to be the greatest water consuming sector in this region and further analysis demonstrated that the degree of water scarcity could be greatly reduced by the implementation of water reduction strategies. The agricultural sector dominated water demand in all other regions and it was found that upgrading irrigation efficiency alongside reducing consumption in mining improved the situation in all regions. Nevertheless, given the scale of water scarcity, further investigation is necessary to obtain more recent and accurate data and analyze alternative strategies.

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Section: Contribution Of Different Sectors To Water Demandmentioning

confidence: 93%

Water Scarcity and the Impact of the Mining and Agricultural Sectors in Chile

et al. 2016

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“…The higher BCR of LED implies that it yields greater benefits irrespective of its higher capital cost. According to Chueco et al (2015), these benefits of LED are associated with its low energy consumption and long useful lifetime. A sample worksheet used for the economic analysis is presented in Appendix I, uploaded on Github (2017).…”

Section: Investment Profitabilitymentioning

confidence: 99%

Energy savings and economic benefits of transition towards efficient lighting in residential buildings in Cameroon

Enongene

Murray

Holland

et al. 2017

Renewable and Sustainable Energy Reviews

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Lighting accounts for over 20% of electricity use in the residential sector of Cameroon. Due to the unreliable and inadequate energy supply in the country, there is a need for the efficient utilization of the available energy. This paper presents the current different technologies used for artificial lighting including the economic and environmental benefits associated with a switch from incandescent lighting to compact fluorescent lamp (CFL) and light emitting diode (LED) in residential dwellings in Buea, Cameroon. The study employed a survey of 100 residential dwellings in Buea. Results of the survey revealed that artificial lighting in dwellings is achieved through the use of the following technologies: incandescent lamps, CFLs and fluorescent tubes. The economic assessment for the substitution of incandescent lamps with CFL and LED considering an average daily lighting duration of six hours was also conducted using the net present value (NPV), benefit cost ratio (BCR), the simple payback period (PBP) and a life cycle cost analysis (LCC). The economic assessment revealed an NPV that ranges from $47 to $282.02, a BCR of 1.84 and a PBP of 0.17 year for the substitution of current incandescent lamps in dwellings with CFL while the substitution of incandescent lamps with LED revealed an NPV of the range $89.14 to $370, a BCR of 3.18 and a PBP of 1.92 years. The LED and incandescent technologies emerged with the lowest and highest LCC respectively. Substituting incandescent lamps with CFL and LED results in a reduction in lighting related greenhouse gas (GHG) emissions from dwellings by 66.6% and 83.3% respectively. From the results, a transition towards efficient lighting in the residential sector of Cameroon possesses great economic and environmental benefits. There is need for the government of Cameroon to expedite the uptake of LED through the formulation and implementation of favourable policies.

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“…A second strategy is to undertake technology retrofits [19,20], in which LED is of increasing interest as it is becoming a more affordable and reliable alternative [21,22], even though it has not always proven to be worth the investment [23,24]. Research into the lighting efficiency of underground spaces has been scarce until now [2,23]. Shuguang [2] developed a model for tunnel lighting control systems, whereas Chueco et al [23] focused on the evaluation of fluorescent and LED luminaires in underground mining.…”

Section: Introductionmentioning

confidence: 99%

“…Research into the lighting efficiency of underground spaces has been scarce until now [2,23]. Shuguang [2] developed a model for tunnel lighting control systems, whereas Chueco et al [23] focused on the evaluation of fluorescent and LED luminaires in underground mining. Within the context of underground metro stations, a notable European research project is SEAM4US -Sustainable Energy Management for Underground Stations [26].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the existing research focuses on the need for adequate control [15] of both daylight [8,16] and occupancy [16,17,18] conditions. A second strategy is to undertake technology retrofits [19,20], in which LED is of increasing interest as it is becoming a more affordable and reliable alternative [21,22], even though it has not always proven to be worth the investment [23,24]. Research into the lighting efficiency of underground spaces has been scarce until now [2,23].…”

Section: Introductionmentioning

confidence: 99%

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Reducing lighting electricity use in underground metro stations

Casals

Gangolells

Forcada

et al. 2016

Energy Conversion and Management

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Lighting systems are usually one of the largest electrical end-uses in underground metro stations. Taking into account that budget restrictions in publicly owned companies hinder energy efficiency retrofit projects that require high initial investments, affordable energy saving strategies are needed. This paper presents a low-cost approach for reducing lighting electricity use in underground stations, without affecting passengers' comfort or the metro operator's service. For this purpose, an adaptive lighting strategy of dimming the illuminance levels of artificial light sources has been developed. Dimming controls are based on the occupancy of the station, and the preventive maintenance and cleaning cycles of the luminaires. The stations' monthly occupancy patterns are defined through the k-means clustering technique. To illustrate its effectiveness, the method was applied to 115 underground stations of the Barcelona metro network. The results revealed overall electricity savings of 255.47 MW h on a biannual basis, which represents 36.22% of the stations' baseline lighting consumption. Individual energy savings were found to range from 25 to 87.5 MW h/year in the stations of the Barcelona metro network, depending on the number and profile of station users. The research findings will undoubtedly be useful for the future energy efficiency project plans of worldwide metro operators and managers of other underground spaces.Peer ReviewedPostprint (author's final draft

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Technical and economic evaluation of fluorescent and LED luminaires in underground mining. A case study: New mine level of El Teniente

Cited by 14 publications

References 13 publications

Water Scarcity and the Impact of the Mining and Agricultural Sectors in Chile

Water Scarcity and the Impact of the Mining and Agricultural Sectors in Chile

Energy savings and economic benefits of transition towards efficient lighting in residential buildings in Cameroon

Reducing lighting electricity use in underground metro stations

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