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- Gatubelysning i Rednitzhembach
Gatubelysning i Rednitzhembach
Miljöskydd, behovet av budgetkontroll och viljan att installera innovativ teknik var drivkraften bakom beslutet för det sydtyska samhället Rednitzhembach att modernisera sin gatubelysning. Med hjälp av innovativ ljusteknik från Tridonic installerade staden ett nytt belysningskoncept som är så gott som oslagbart i fråga om energieffektivitet och kostnadsbesparingar.
A brilliant future
N-ERGIE AG started by making an inventory of the street lighting. The luminaires were categorised according to whether or not they could be upgraded and whether they were already fitted with sodium light. Most of the 577 upgradable luminaires could be fitted with 50 W sodium lamps instead of 80 W mercury lamps. For Rednitzhembach this means that the community can save 77,000 kWh of electricity each year, which corresponds to around 10,000 euros. For the environment it also means a reduction in CO2 emissions of 43,000 tons. The amortisation period at the time was around six years.
The rapid amortisation and short completion time were made possible by a unique solution from Tridonic. Conventional upgrades to a more efficient light source require the ballasts to be adapted and an ignitor to be installed. Instead, Tridonic offers an innovative concept that keeps upgrade costs and the volume of work to a minimum. Instead of completely redesigning the luminaires, all that’s needed is a single additional module.
A solution with energy-efficiency at its heart
This module tailors the existing ballasts to the requirements of high-pressure sodium lamps and supplies the ignition voltage needed to start the lamp. The existing ballasts remain in the luminaire. Upgrade costs are drastically reduced as a result. The terminal and luminaire wiring can be checked during the upgrade process for obvious damage and replaced if necessary. The energy savings are significant because of the greater efficiency of the high-pressure sodium lamp with its luminous efficacy of up to 150 lm/W compared with only 60 lm/W in the case of the high-pressure mercury vapour lamp. If, for example, a 125 W mercury vapour lamp is replaced by a 70 W sodium lamp, energy consumption will be 44 % less for the same amount of light. Thanks to these remarkable energy savings with sodium lamps and Tridonic ignitors with integrated supplementary impedance, overall investment costs are offset in only a short time.
Replacing high-pressure mercury vapour lamps with high-pressure sodium lamps and integrating Tridonic ignitors with supplementary impedance is an efficient way of keeping lighting systems up to date and operating them for the benefit of the environment and local budgets. The savings in energy and operating costs provide a strong argument for a complete upgrade. In most cases, the very short payback time for the upgrade offsets the investment costs within one budget period.
|Ägare:||Rednitzhembach local authority, Nuremberg (D)|
|Strömförsörjningsbyrå:||N-ERGIE AG, Nuremberg (D)|