Comparison between LED lamps and Induction Lamps

 Repost from Premier Lighting
 


The most energy efficient and long life lamps are undoubtedly LED lamps and induction lamps.  Thus they are the desired retrofit for large area and outdoor lighting:  park lamps, street lights, and other types of lighting that require less change and maintance (those that are difficult to reach as in high ceilings or lamp post.

How do they operate work:


Light Emitting Diodes (LEDs)
Instead of using a filament (like incandescents) or gas (like CFLs), LEDs produce light through the flow of electrons in a semiconductor material made of positively and negatively charged parts. When an electric charge strikes the semiconductor (i.e. the light is turned on), electrons flow through “holes” in the material from a negative to a positive layer. As the excited electrons pass through the positively charged holes, they create light which causes the LED to illuminate.
Induction Lamps
Induction lamps are somewhat similar to fluorescent bulbs in that they create light by using an electromagnetic field to excite mercury particles mixed in an inert gas. However, instead of using metal prongs, which often break or become stripped, induction bulbs are excited through a powerful electromagnet positioned outside the bulb. This setup also eliminates the problem of leaky bulbs (common with fluorescents), where outside gasses seep inside and disrupt the balance of inert gasses.

Comparison between LED lamps and induction lamps

Induction & LEDs Compared

	Induction	LED
Energy Efficiency	Up to 90 Lumens/Watt	Up to 120 Lumens/Watt and improving
Durability	Heavy-duty – has no electrode or filament, shock & vibration resistant	Heavy-duty – has no electrode or filament, shock & vibration resistant
Lifetime	100,000 hours at R50	100,000 hours at L70
Lumen Depreciation	35% by rated life	30% loss at rated life
Cold Tolerant	- 40 F (may require warm up time at low temperatures)	-30 F (instant on)
Performance	Turns on instantly, no flickering or glare	Turns on instantly, no flickering
Color Temperatures	Multiple Options (2700 to 6500 Kelvin)	Multiple Options (2700 to 6500 Kelvin)
Color Rendering	Average 80 CRI	70 to 90 CRI
Dimmable?	No- unless special ballast	Yes- most
Warranty	3 to 5 years	Usually 5 years
Cost	Moderate upfront cost	Moderate upfront cost