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Author Kyba, C.C.M.; Hänel, A.; Hölker, F. url  doi
openurl 
  Title Redefining efficiency for outdoor lighting Type Journal Article
  Year 2014 Publication (up) Energy & Environmental Science Abbreviated Journal Energy Environ. Sci.  
  Volume 7 Issue 6 Pages 1806  
  Keywords *Lighting; outdoor lighting; luminous efficiency; lighting standards; public policy; illuminance; street lighting  
  Abstract Improvements in the luminous efficiency of outdoor lamps might not result in energy savings or reductions in greenhouse gas emissions. The reason for this is a rebound effect: when light becomes cheaper, many users will increase illumination, and some previously unlit areas may become lit. We present three policy recommendations that work together to guarantee major energy reductions in street lighting systems. First, taking advantage of new technologies to use light only when and where it is needed. Second, defining maximum permitted illuminances for roadway lighting. Third, defining street lighting system efficiency in terms of kilowatt hours per kilometer per year. Adoption of these policies would not only save energy, but would greatly reduce the amount of light pollution produced by cities. The goal of lighting policy should be to provide the light needed for any given task while minimizing both the energy use and negative environmental side effects of the light.  
  Address Leibniz Institute of Freshwater Ecology and Inland Fisheries, Germany  
  Corporate Author Thesis  
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  Series Volume Series Issue Edition  
  ISSN 1754-5692 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 244  
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Author Huang, B.J.; Wu, M.S.; Hsu, P.C.; Chen, J.W.; Chen, K.Y. url  doi
openurl 
  Title Development of high-performance solar LED lighting system Type Journal Article
  Year 2010 Publication (up) Energy Conversion and Management Abbreviated Journal Energy Conversion and Management  
  Volume 51 Issue 8 Pages 1669-1675  
  Keywords Stand-alone solar system; Off-grid solar system; Solar-powered lighting; LED lighting; Solar LED lighting; LED; outdoor lighting  
  Abstract The present study developed a high-performance charge/discharge controller for stand-alone solar LED lighting system by incorporating an nMPPO system design, a PWM battery charge control, and a PWM battery discharge control to directly drive the LED. The MPPT controller can then be removed from the stand-alone solar system and the charged capacity of the battery increases 9.7%. For LED driven by PWM current directly from battery, a reliability test for the light decay of LED lamps was performed continuously for 13,200 h. It has shown that the light decay of PWM-driven LED is the same as that of constant-current driven LED. The switching energy loss of the MOSFET in the PWM battery discharge control is less than 1%. Three solar-powered LED lighting systems (18 W, 100 W and 150 W LED) were designed and built. The long-term outdoor field test results have shown that the system performance is satisfactory with the control system developed in the present study. The loss of load probability for the 18 W solar LED system is 14.1% in winter and zero in summer. For the 100 W solar LED system, the loss of load probability is 3.6% in spring.  
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  ISSN 0196-8904 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 330  
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Author Gutierrez-Escolar, A.; Castillo-Martinez, A.; Gomez-Pulido, J.; Gutierrez-Martinez, J.-M.; González-Seco, E.; Stapic, Z. url  doi
openurl 
  Title A review of energy efficiency label of street lighting systems Type Journal Article
  Year 2016 Publication (up) Energy Efficiency Abbreviated Journal Energy Efficiency  
  Volume Issue Pages 1-18  
  Keywords Energy; Energy Efficiency Index; Total Luminous Flux; Energy Efficiency Label; Electronic Ballast; Energy Performance Indicator; Lighting Project; Energy Efficiency Class; Energy Efficiency Level; Road Lighting; Active PowerLighting System; Wind Turbine; Current Energy Efficiency; Luminous Efficacy; Electricity Consumption; Kiviat diagram; Lamp; Light pollution; Pie chart; Dimming luminous flux; review  
  Abstract There are very few countries that have provisions addressing the energy efficiency of the whole street lighting system, such as Spain or the Netherlands. Nevertheless, there is not an agreement about how energy efficiency must be assessed. The Spanish Government contemplates it in the Royal Decree 1890/2008 with the goal of improving energy savings and efficiency. However, this has not obtained the expected results. Nowadays, energy efficiency of this kind of systems is assessed using a label. In the case of Spain, this label only assesses one magnitude. The contributions of this paper are two evaluation systems (kiviat diagram and pie chart) which assess five magnitudes: lamps, energy efficiency index, light pollution, renewable energy contribution, and harness of the luminous flux using dimming. After that, a survey was done to study several subjects: (1) if citizens are aware about the efficiency of street lighting systems, (2) whether the sample of colors used in the label is adequate, and (3) if our proposed systems could replace the current evaluation system. Finally, the paper finishes with the conclusions of the survey.  
  Address Department of Computer Sciences, Polytechnic School, University of Alcala, Road Madrid-Barcelona, Km 33.6, Alcala de Henares, 28871, Spain  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1570-6478 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1471  
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Author Mills, E.; Tracy, J.L.; Alstone, P.; Jacobson, A.; Avato, P. url  doi
openurl 
  Title Low-cost LED flashlights and market spoiling in Kenya's off-grid lighting market Type Journal Article
  Year 2015 Publication (up) Energy Efficiency Abbreviated Journal Energy Efficiency  
  Volume 8 Issue 2 Pages 323-337  
  Keywords Lighting; Regulation  
  Abstract Market spoiling stemming from information asymmetry has slowed the adoption grid-independent technologies that replace fuel-based lighting in the developing world. End users typically first experience lighting technology innovations via flashlights. The rapid emergence of inexpensive LED flashlights is a potentially good advancement in this regard, as LED lighting can be longer-lived, have higher initial light output, and be more energy-efficient than incandescent. However, our laboratory tests and end user interviews indicate that these products often fall far short of advertised performance levels and typically fail after a few months of use. Our study of purchasing decisions by 23 Kenyan market traders given an opportunity to purchase warrantied LED lamps found that prior experience with inexpensive LED flashlights significantly reduced their probability of purchasing (p = 0.0028). As additional evidence of consumer skepticism, in a large statistical survey, we also find that willingness to pay increases significantly once an LED lighting product is directly handled and tested by the end user. If LED lighting is to achieve its potential as a superior substitute for fuel-based lighting, effective policy measures are needed to remove the information asymmetry between expected and actual performance. One such measure, independent testing and certification, has measurably increased the quality of products available in the off-grid lighting marketplace.  
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  ISSN 1570-646X ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1778  
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Author Bensch, G.; Peters, J.; Sievert, M. url  doi
openurl 
  Title The lighting transition in rural Africa — From kerosene to battery-powered LED and the emerging disposal problem Type Journal Article
  Year 2017 Publication (up) Energy for Sustainable Development Abbreviated Journal Energy for Sustainable Development  
  Volume 39 Issue Pages 13-20  
  Keywords Lighting; Energy  
  Abstract People without electricity access, numbering today more than 500 million in rural Africa alone, have been using dim and sooty kerosene lamps and candles for their lighting purposes for decades. In the present paper, current lighting usage patterns are systematically assessed using detailed new survey data from seven countries across Sub-Saharan Africa. The data makes evident that a transition has taken place in recent years, both unnoticed by and without external support from governmental or non-governmental organizations: the rural population without electricity in Africa has replaced kerosene lights and candles by simple, yet more efficient and cleaner LED lamps powered by non-rechargeable batteries. Nevertheless, we also show that the discharged batteries are generally disposed of inappropriately in latrines or the nature. The toxic content of many dry-cell batteries and their accumulation at local litter hotspots may have harmful repercussions on health and the environment. We conclude by suggesting that rapid action is needed to, first, install an effective monitoring system on batteries that enter the continent and, second, put in place an appropriate waste management system.  
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  ISSN 0973-0826 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2193  
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