Originally posted by twhitehead
…What is a LAD lamp?
What is a LAD lamp? If it was a typo and you meant LED, some sites claim that LEDs are no more efficient than incandescents and way less efficient than fluorescents.
Sorry, you are right; should have been “LED”.
…some sites claim that LEDs are no more efficient than incandescents and way less efficient than fluorescents.
Yes, because it depends whether or not you take into account such factors such as its operating temperature (which often has to be kept high by running the LED at higher voltage that makes it run inefficiently) when stating its energy efficiency.
“…LED lamps presently have efficiencies of 30% with higher levels attainable…”
“…A typical CFL (compact fluorescent lamp) is in the range of 17 to 21% efficient at converting electric power to radiant power…”
But the above doesn’t take into account of the required operating temperature etc thus that is why I said in my post:
“…. The current most energy efficient artificial lighting normally comes from LED lamps that can run with an energy efficiency as high as 30% BUT
in practice run with much lower efficiency…” (my emphasis and spelling corrected)