Quick Facts about LED Lighting
Many people are asking questions about LED lighting because the lighting has measurements that are unfamiliar to many.
First and foremost the inventors of recent LED lighting have received the Nobel Peace Prize in Physics for 2014.
LED means Light Emitting Diode.
Let’s start with watts as in the old 100 watt bulb. Watts is just a measurement of how much electricity is used by the lighting fixture.
Lumens/Luminous Flux is the amount of light that is created and this is usually expressed with an equivalency to the watt measurement.
Incandescent bulbs put out about 17 lumens for every watt used.
Fluorescent bulbs put out about 40 to 70 lumens per watt. The reason for such a range depends on the age of the bulb. The newer ones are better because of improved technology.
LED bulbs put out 80 to 110 lumens per watt used. The technology is evolving even as we speak and some of the newer LED lights are reaching into the 140 lumens per watt.
Using these explanations you can see instantly how the new products are saving you a lot of money on your electric bill. The LED costs more initially but the savings are substantial. Some of these bulbs will pay for themselves in 8 to 20 months. Also the length of life is expected to be so long they will pay for themselves and save money for years to come.
Another reason you should consider the conversion to LED’s is that they don’t require ballasts. These devices in lighting add to the cost in purchase, installation, maintenance, and power consumed by the lighting fixture.
With the long life span LED’s are excellent for the areas in your home or business that are hard to access.
With the low watt usage they provide an excellent application for any fixture that you keep on 24/7.
LED’s are great for applications where heat is a factor. They emit very little heat so they work in a cooler/refrigerator without fighting the cooling system which adds to the savings of electricity on the appliance as well.
The LED is made of recyclable materials. They are ROHS [Restriction on Hazardous Substances] compliant.
The LED has a higher Kelvin measurement; this is how white the light is perceived. This relates directly to CRI (Color rating index). The CRI affects the perception of color. My wife tells me I have no perception of color so I will stop here.
The LED has an extremely high Power factor rating greater than .90. This is a rating of how efficiently the appliance is using the electricity. 1.00 is the best possible rating. Many of the florescent lights that I have measured are .50 to .60.
While these comparisons are not as technical in statement as they could be you can see that the evolution of lighting is ongoing. While I am not an electrical engineer, these are some of the advantages of LED lighting as I understand.