In article ,
Roger Hayter wrote:
Dave Plowman (News) wrote:

In article ,
Roger Hayter wrote:
Dave Plowman (News) wrote:

In article ,
wrote:
What I'm saying applies for all practical purposes

At last. Why didn't you state this first?

But good to see you admit you were wrong all this time.

He's not wrong. Producing heat from other forms of energy is one thing
you can do with 100% efficiency, certainly given time for equilibration.
There are no theoretical limitations from thermodynamics.

So you stand by his claim that an electric convector heater is 100%
efficient? Just curious.

Yes. I'm saying there is no fundamental reason why it can't be. Any
other forms of energy produced are probably going to decay to heat
rapidly or heat other objects in the room, for instance.

OK then. As a rad heats, it expands. Please explain where the energy
needed for that comes from, and just how it is ultimately translated into
useful heat. Or have we invented perpetual motion? Where you get 'work'
done for no energy?

--
*Who are these kids and why are they calling me Mom?

Dave Plowman London SW
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