rjvh said:
electricalpower consumption is measured in watt but...
and yes a LED is far more efficient...
don't forget that a crt also emit x rays...
the output in the for human visible spectrum...
But, there is an equivalency between candles and watts since both represent power. It's just the units of measurement that are customarily used.
It is difficult to equate an LED to an incandescent bulb for the reasons you give but, the discussion is about power efficiency and thus, taking into account the "wasted" power (heat rather than light) is valid.
The CRT (and associated parts...circuitry, filament, grid power, sweeping, high voltage, beam resistance, shadow mask losses, phosphor efficiency, etc.) uses power and one of those is X-ray emmission. But, again, for purposes of the direction this discussion has gone, they all result in heat and virtually all that heat is sinked by the room (and eventually by the world and then the universe at large).
So, while the things you say are true, I'm not just sure of the point you are making about the heat load contributed by the aappliances in a home.