With LED light engines on average reducing lighting energy consumption by between 50 and 85% (Depending on fitting and lamps used), by introducing sensors in to the installation where possible, the actual consumption of energy can in some cases be reduced by as much as 98%.
The most common example is in stairwells and fire exits, throughout the majority of apartment blocks. In nearly all cases the lights in these areas are on 24 hours a day, 7 days a week, 365 days a year. There are examples where resident may have only passed through these areas a handful of times each day.
By introducing sensors, we were able to reduce the hourly consumption of these fittings over a yearly period from a staggering 8,760 hours to a minimal 61 hours. The figures really do speak for themselves.
Sensors can also insure that even if lights in specific zones e.g. bathrooms, storerooms, cupboards, offices etc are accidentally left on. Fittings and lamps in these zones will automatically shut down once the pre-set time entered time expires, guaranteeing that important energy reduction maximisation threshold.
There are a wide range of sensor product specifications and it is important to ensure the correct products specifications are matched to the relevant zones. At London LED Lighting, we have access to 100’s of product options that would enable you to complete all aspects of your desired applications.
Whilst it is important to maximise lighting energy consumption savings throughout all areas where lights are not required on a permanent basis, there are always areas that need to retain that look throughout the main hours of the day and evening e.g. window displays, building lights, tree and shrub lighting.
There is still, even in these scenarios, a possibility to make savings by introducing time clocks into the circuits, times can be set throughout the very early hours of the morning to terminate power the desired circuits when it is least likely that the lights will have any impact on your client base or passing pedestrians in these areas.
This is a great way to control lighting that is only required to come on during the dark hours. As the time that darkness is upon us changes considerably throughout the months of the year, using timers in these locations would not be feasible as they would constantly require resetting.
Photocells act as a switch by energizing the circuit when the sensor fails to detect light. It is however important to ensure that there are no additional lights that are on near this sensor as it could affect the efficiency of the product reducing the overall potential lighting energy consumption savings.
Due to the wide range of specifications available with LED light engines e.g. wide beam angle ranges and multiple lumen output options, there is in essence the possibility of a double saving, firstly with the initial wattage consumption reduction compared to the original inefficient lamps and secondly with the reduction of fittings and lamp quantities needed throughout the desired spaces.