Public lighting
HOW SHOULD THE LIGHT THAT LIGHTS OUR CITIES BE DESIGNED?
The light we use in our cities is not just a question of efficiency, but influences different aspects of our lives. Light pollution affects human beings, flora and fauna. The effects on humans, on its biological rhythms, normally associated with sleep disorders but not only are documented. On animals it produces the loss of orientation, on the flora it alters the photoperiod. Nightlife is heavily disturbed by artificial light which also affects migratory animals and insects. The HPS (SAP) technology offers a good efficiency minimizing all the factors described above, for this reason it represents an interesting solution compared to the white-blue LED light (4000K).
The last major international study on light pollution reports that the transition between Sodium lamps and LEDs will lead to an increase with a factor of 3.
http://cielobuio.org/il-nuovo-atlante-mondiale-della-brillanza-artificiale-del-cielo/
Those who design systems to light a street normally choose to install a sufficient amount of light to ensure good visibility during the light-dark transition and vice versa. In the central hours of the night, experience teaches us that even with less light we can clearly see and not significantly change the level of safety for those who circulate. This consideration has a greater value for areas where there is no significant night traffic such as residential, cycle paths and industrial areas.
For what has been said above it can be very convenient to use HPS sources with light reduction devices in the middle of the night. Practice shows that with this management it is possible to reduce energy costs from 40 to 60%.
This technology lends itself very well to updating old lines and guarantees great reliability. As far as the efficiency of modern HPS lamps is concerned, it is useful to point out that, especially in sizes equal to or greater than 100W, it is well above the minimum efficiency values established in the EU and is in line with the most widespread LED emitters. The life time is strongly influenced by the precise management of the flow regulator and stands at values of 32,000-40,000 hours.
Our company builds a complete line of centralized flow regulators for public and private lighting systems. It also produces electronic ballasts suitable for SAP point-to-point installation lamps that offer the possibility of reducing the luminous flux with sophisticated and extremely efficient management. We also offer solutions for the energy consumption accounting, the technical problems detection and data transmission.