This is going to seem like im trolling you on this thread but you and the other led freaks are talking way too much broscience.....
The sun puts out near half its light as IR so no freaking idea what bs your quoting there!
Your describing a very inefficient plant light led freak.
Heat is radiation, convection and conduction, you should wiki and learn this before even opening your mouth here, far too many of you pros seem to lack even a basic understanding of heat, why you struggle with hids and run to leds thinking they give bigger yeilds, what amateurs.....!
Such noobs, any real science or just the same old copy and paste led rubbish, like this site could be so much better if you lot just shut up and let some real growers do the hard stuff you cant