Quote:
Originally Posted by forfismum
Aha aha aha ahaaaaaaaaaaaaaa but why is it waste heat ? Our lamp is part of the energy make up of our home most of the time.
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Unless your house is so well insulated with three foot thick walls and a thatched roof that you never need heating. If you don't need the heat........
Quote:
Originally Posted by forfismum
Interesting that in past times cattle were housed under the domestic part of farm buildings thus turning the respiratory heat loss from the moos into useful heat.No "waste heat " in yer House of Denmark young Yorick :-"
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Yes, respitory and body heat. But
hamlets have evolved and not so many residences have cattle within spitting distance.
On a slightly more serious note, I have been concerned with energy efficiency for most of my working life. This is in the context of industrial process systems. Energy efficiency is something industry took seriously a long time before the commercial and domestic sectors. As a result, industrial equipment using significant amounts of energy, has become much more efficient both inherrently and in the means of control.
As an example, electric motors are typically 95% efficient. At best, any improvement over that is tinkering at the margins. The way to save energy is to switch it off when it isn't needed. Which was the point you made in the first place.
