older/newer GCH radiator efficiency?

what a silly claim

is there a meaning behind that?

ok, show us a sound recording of air rising from a typical domestic radiator. Should prove interesting.

Making a silent fan is simple. I certainly don't claim to be an expert on fans but I know enough to have designed & made them, and have made more than one completely silent fan. It really is not difficult.

Shame I don't have pictures, I did this many years before I got a digital cam, and of course it was not normal to take pictures of lots of things back then. If anyone decides to move out of idiot troll mode I don't mind explaining how it was done, but that hasn't happened here so far.

NT

FFS. Having worked in lots and lots of studios across the land, none has totally silent ventilation.

Except in your little world where if the noise doesn't deafen you, it is silent enough. So 100% silent.

That's quite an impressive mojibake, I can't find anything that can ungarble it

insults are much more effective if supported by facts - eg you point to where you did define "silent".

I've no idea either. ;-)

Try reading again. I meant yes I agree, not yes I've found a new form of energy!

Not if you include "useful" or the like in your definition of efficiency[1]. So for example if you want to heat a room using electricity the efficiency is less than 100% because the energy delivered is less than the energy used to generate that electricity: no generator is 100% efficient, and then there are transmission losses.

And even if you count only the energy delivered to your house there will be losses there. At the limit I wager there will be some losses from the mains wiring's EMFs, and it takes less than a femtojoule to deny you

Quite - if a rad creaks or ticks as it heats up that isn't useful heat. But that noise comes from somewhere - the rad expanding. Hence nothing ever being 100% efficient in practice.

yes, we agree on that

I've never claimed that. You're an idiot and/or troll if you can't read & comprehend what I have claimed.

we were discussing the efficiency of an electric radiator, not the efficiency of generators & distribution.

Plenty don't make noises. Try again.

NT

Keep on trolling Mr Purr. It just makes you look an even bigger fool.

Only advertising copywriters claim 100% efficiency for anything.

Every time you have an opportunity to claim where else the energy goes, you either come up with nothing or something dumb. You waffle like a fool, but are not able to answer the key question, which is what other form of energy is produced. It just might be because with some rads there isn't one. Have a think about that.

And you just ignore all the answers you've had.

But carry on making yourself the fool. And it is only a fool who refers to

I haven't ignored any. Not even the glowing one :)

If you don't think electricity can be turned to heat at 100% efficiency you're truly clueless.

And you have your head in the clouds.

thank you for confirming your cluelessness. Turning electricity to heat 100% efficiently is done EVERY SINGLE DAY.

NT

A creak or tick, which in my experience is quite common in heaters and radiators, is acoustic energy, and, being a creak or a tick, is insufficiently disordered to be described as heat. An expanding or contracting heating element or radiator may not be entirely free to expand or contract, leading to the storage of energy as elastic or stress potential energy. The bulk motion of the air as it rises from the heater, and any resulting convection patterns produced, are likewise also not heat. They are, of course, almost certainly not significant contributions compared to the heat energy produced.

If you want to get more esoteric, the heating may induce changes in material properties - perhaps chemical, or perhaps by alterations in the material's microstructure, which would also not be heat.

#Paul

almost

Can we stop all this now?

#Paul