BTW – I mentioned ~70% efficient photocells, because there have been claims for that high level, and there would be plenty of losses in a closed-loop system, even if the emitter was COP=2.3. But it turns out there are even higher efficiencies being claimed – 80 percent.
http://www.extremetech.com/extreme/168811-new-nano-material-could-boost-solar-panel-efficiency-as-high-as-80 But even 50% would be worth a try. Too bad that there is so much bogosity on the internet – if we could believe all these things, the energy crisis would be solved already by closing the loop using LEDs and solar panels. Today, I could use the fringe benefit – cool air. <http://www.wired.co.uk/news/archive/2012-03/09/230-percent-efficient-leds> http://www.wired.co.uk/news/archive/2012-03/09/230-percent-efficient-leds Notice that this LED has a COP of 2.3… or 230 percent overunity. That implies “perpetual motion”. “However, while MIT's diode puts out more than twice as much energy in photons as it's fed in electrons, it doesn't violate the conservation of energy because it appears to draw in heat energy from its surroundings instead.” When it gets more than 100 percent efficient, it begins to cool down, stealing energy from ambient, which is exactly what must happen in any OU device, unless there is nuclear reaction pathway or another “supra-chemical” way to convert mass into energy. BTW - If photocells could be obtained which are ~70% efficient, then in principle, yjey could be mated to the LED for the proverbial “eternal light” … but the output is so low you would need a few million of them to be useful… but you get free air conditioning as a fringe benefit J
