Alain Sepeda <[email protected]> wrote: > > - is there a simple way , with minimal assumption, to be sure that the > COP>1 > > Look at the color. If it is dull red, it may be around 750°C which is where you would expect it to be in a straight line extrapolation calibration up to 800 W. If it is white it has to be around 1300°C, which is far higher than the calibration indicates it should be. A calibration curve will bend down. It never bends up. McKubre pointed this out:
On page 7 of the report the authors state: “Subsequent calculation proved that increasing the input by roughly 100 watts had caused an increase of about 700 watts in power emitted.” This is interesting. The shape of the output vs. input power curve is observed (or implied) to strongly curve upwards in a manner completely inconsistent with the Stefan-Boltzmann law for radiative heat loss. It is also inconsistent with simple convective heat transfer but several issues need to be addressed before we can claim this as a qualitative or even “semi-quantitative” measure of excess heat production . . . Note that incandescent colors are similar for all materials. - Jed
