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Lin, C.-F.; Tsai, T.-Y.; Chen, K.-Y.; Shen, P.-C. |
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Efficient warm-white lighting using rare-earth-element-free fluorescent materials for saving energy, environment protection and human health |
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Journal Article |
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2016 |
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RSC Adv. |
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RSC Adv. |
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6 |
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113 |
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111959-111965 |
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Lighting |
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Solid-state white light emission is important for energy saving, but currently it is mainly based on environmentally unfriendly rare-earth doped phosphors or cadmium-containing quantum dots. Here, we explore an environmentally friendly approach for efficient white light emission based on ZnSe:Mn nanoparticles without rare-earth or cadmium elements. The emission is composed of a broad green-orange spectral band (525–650 nm) with the peak located at 578 nm and the color temperature is low, so it is particularly good for lighting at night to reduce risks to human health. Furthermore, the optimal absorption peak could be designed at 453 nm, which well matches the commercial blue-LED emission wavelength (445–470 nm). A quantum yield up to 84.5% could also be achieved. This rare-earth-element-free material opens up a new avenue for energy-saving, healthy, and environmentally benign lighting. |
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2046-2069 |
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LoNNe @ kyba @ |
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1566 |
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Kyba, C.C.M.; Hänel, A.; Hölker, F. |
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Title |
Redefining efficiency for outdoor lighting |
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Journal Article |
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2014 |
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Energy & Environmental Science |
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Energy Environ. Sci. |
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7 |
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6 |
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1806 |
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*Lighting; outdoor lighting; luminous efficiency; lighting standards; public policy; illuminance; street lighting |
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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. |
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Leibniz Institute of Freshwater Ecology and Inland Fisheries, Germany |
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1754-5692 |
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IDA @ john @ |
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244 |
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Farkas, T.D.; Kiràly, T.; Pardy, T.; Rang, T.; Rang, G. |
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Title |
Application of power line communication technology in street lighting control |
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2018 |
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International Journal of Design & Nature and Ecodynamics |
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Int. J. DNE |
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13 |
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2 |
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176-186 |
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Lighting |
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Rapidly increasing usage of telecommunication systems causes new transmission technologies and networks to emerge. Not only the efficiency, reliability and accessibility of the network are important, but also the economic issues. One cost-effective solution could be power line communication (PLC) technology, which transmits data using the existing electricity infrastructure. The application of this communication technique is an attractive and innovative solution for the realization of smart cities and smart homes. With intelligent control networks, energy savings can be optimized and the operating as well as maintenance costs can be reduced. Since outdoor lighting systems are the major consumers of electricity, to create a modern, energy-efficient city, intelligent street lighting control is needed. This paper provides an overview of power line communication principles including the theoretical background of data communication, modulation techniques, channel access methods, protocols, disturbances and noises. Furthermore, in order to highlight the benefits of a PLC-based street lighting control system, a pilot project will be presented. |
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NC @ ehyde3 @ |
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2091 |
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Peden, M.; Scurfield, R.; Sleet, D.; Mohan, D.; Hyder, A. A.; Jarawan, E.; Mathers, C. |
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World report on road traffic injury prevention. |
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2004 |
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LoNNe @ kagoburian @ |
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645 |
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Völker, S.; Krenz, P. |
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Entwicklung von Maßzahlen für adaptive Beleuchtungssysteme |
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2013 |
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In: Held, M., Hölker, F. & Jessel, B. (2013) Schutz der Nacht – Lichtverschmutzung, Biodiversität und Nachtlandschaft. – BfN-Skripten |
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336 |
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87-90 |
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Lighting |
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