A holistic approach for achieving energy savings using modern lighting technologies. An illustration with LED systems for outdoor lighting
Résumé
Currently the next revolution in lighting is taking place: Solid State Lighting (SSL). In the long term SSL, inorganic and organic light emitting diodes, could become the next generation light sources. In fact, LEDs, with a continuous growth of their luminous efficiencies, establish themselves as breakthrough solutions. Street lighting is considered as an important issue for this technology. This paper give some examples of projects and their outcomes in this domain, based on the features of the European LITES project, to prove in real life experimentation that intelligent street lighting using solid-state lights LED drastically reduces energy consumption. The paper presents strategies for increasing the electric energy savings in commercial and office buildings, by implementing the Best Available Techniques and Sustainable Development Strategy, which focus on two factors: the use of the best state of the art technology available and the environment protection, while the human needs are meet. Two case-studies are presented, with the purpose of emphasizing the importance of applying energy efficiency techniques in office buildings: the first takes into consideration two different solutions for upgrading the existing lighting installation in an office room: up-lamping and relighting; the second analyzes the upgrading process for an office building, where three scenarios are considered for the replacement of the existing installations.. The selection between different lighting systems is made at each designing step, with the final purpose of establishing the optimal solution regarding the energy efficiency, the user satisfaction.