Which lamp is really more efficient?

Question

Incadesent is the least efficient to operate but when you take energy required to manufacture, transport,run, dispose of, which lamp is more energy efficient. Compact fluroecent ,standard incadesent or mains voltage quartz halogen?

Answer 1

Well the standard incandescent is clearly not, even if the longer life of compact florescent is exaggerated, even over the 2000hour or so life of the incandescent the electricity savings of the CFL will exceed it's purchase price a couple of times in many cases. So unless the manufacturers and the transporters are getting their energy a lot cheaper than the consumer, then then energy used in manufacture and transport must be less that that saved. Disposal is potential another issue, but is seems unlikely it would take any more energy than the initial manufacturing (and many just go into a land fill like incandescents, despite the CFL's  tiny mercury content)

While the quartz halogen lamp is more efficient than the conventional incandescent, it is not all that much more, so I am quite sure the CFL still beats it.

I wonder what the Luddites said about Edison's light bulb?

Answer 2

From Production Point: incadesent is efficient, on consumer part CF is efficient.

On Polution point: incadesent is most effecient for production and consumer both.