The return of the incandescent light bulb
Traditionally incandescent light bulbs waste a lot of energy, only emitting about 5% as light. Fluorescent and LED technology is better, managing to reach up to 14% efficiency.
Now the attention is back on incandescent light bulbs, as researchers have found a way to recycle the heat given off and use it to produce more light instead. They believe it may be possible to achieve 40% efficiency like this!
Heard this on the radio earlier, but h/t to Nicholas Berry for the link.
Fascinating, I now want some.
Me too Steven Fitzgerald
Yay! Now we can save the world!!!
So will this make meth heads 40% more efficient?
Will now go burn my florescent light bulbs
I not surprised that the people at MIT have done this! They are very smart!
Too bad it is illegal to sell/use them here, in Toronto. I still use ‘old’ style bulbs. The Govt. reacted too soon before there was a viable plan to deal with all the mercury. Soo frustrating. Ty MIT, congrats.
actually Led emit 50-60% of their power as light
there is no way light bulbs can be better unless they would create no heat
Ishiku Yūki can you point to an article that states that?
I found an article which indicates LED bulbs give around 55-70 lumens per watt, but that isn’t the same as saying they are 55-70% efficient. The same article also shows incandescent bulbs giving 13-18 lumens per watt.
Here’s a link to it. http://cleantechnica.com/2014/11/05/led-lighting-efficiency-jumps-roughly-50-since-2012/
Nola Coulter sorry bro
Samuel Martinson Hey,…y sorry? ‘Cause the ‘hot’ bulbs are illegal now? If so, I know!! There ought to be laws against lobbying, eh!? Ishiku Yūki I have other uses for ‘old’ or ‘hot’ style bulbs other than just for light. Many things can be used in many, or at least a couple, different ways than they are marketed.
Ah
Nola Coulter I see
Lobbyists trying to bring back old tech so they don’t need to adapt to changing times. You want a straight up comparison of current tech
http://www.designrecycleinc.com/led%20comp%20chart.html
According to this LEDs are at least 8 times more efficient than incandescent, without accounting for heat loss or lifespan. Incandescent is dead tech unless you are using it as a heat source.
Greatest
I expect them to be more eye soothing.
I like LEDs more…but this is good news also.
I from time to time like to change from led to incandescent to help my eyes see better and not use always use the same white light or incandescent light……