When you start considering LED Lighting Lumens and you begin to compare the LED lumen (light) output against the lamp you wish to replace. Don’t be mislead into thinking you always have to provide the same amount of lumens as the lamp you intend to replace. However certain application do require a like for like lumen output ( omni-directional). Such as the A19 style Edison base bulb, 60 watt incandescent lamp. This type of light output is known as omni directional, emitting light in all directions. So the only way to produce that same appearance and concentration of light, would be to create equal lumen output, in this particular case, that would be 800 lumens. A 60 watt incandescent lamp produces approx. 800 lumens initially. To compete the LED Lighting Lumens replacement will produce the same value, 800 lumens and uses only 8 watts. The LED lamp has a significantly higher efficacy , much higher than any incandescent or fluorescent lamp.
That rule applies only for omni directional light sources. For all those lamps that rely on reflectors to direct light towards an object such as a traditional fluorescent linear tube. This concept becomes even more inefficient and significant light losses are created by its outdated design. This is where LED really becomes efficient, the concept of directional illumination eliminates significant light loss. Focusing the light towards the surface you wish to illuminate is the most efficient design for maximizing the used LED Lighting lumens produced. As an example a 32 watt 4 foot fluorescent lamp produces initial light output of 2800 lumens. This has an omni directional light output, therefore relying on the fixtures reflector to redirect light in a downward direction. By contrast a 15 watt LED linear tube with a directional light design produces 1850 lumens. measuring the light (foot candles) at any given surface being illuminated, this will in all cases, be higher with the LED lamp. Therefore lumen output is not the only metric needing to be considered!
The same concept applies for a shoebox style light fixture found in nearly every parking lot. A common style is the 400 watt Metal Halide lamp, this produces a typical initial output of around 32,000 lumens. Using a directional LED fixture both the energy consumption and light output are lower (150 watts and 20,500 lumens) In addition consistently higher light levels are delivered at the surface of the parking lot using an efficient direction LED designed fixture.
There are published recommended lighting levels for both safety and health benefits, based on specific job tasks. Lighting levels are measured in foot candles and it’s most important to design lighting systems to achieve these standards. Saving energy is only one part of the goal when installing high efficiency LED lighting. Striving to achieve the correct illumination levels should always be part of the design consideration and goals.
For all your lighting needs and assistance you can rely on Americas Best LED by vootu to provide the right guidance and recommendations. Helping you to achieve efficiency and safety, compromise on either and you are at risk! Call today and speak with a trained lighting consultant at 727 314 8656.