Peter Davey Heater

[devrimogun]

Hi.  I should just mention that my last creation had a nice 'dingggg...' off of it when struck with a piece of metal, and being a piston-type interference-fit construction is very easy to 'tune' - which I attempted to do by ear.  So, striking the outer dome, there was a point that was pretty easy to find where the inner one would also reverberate at its higher frequency.  Did nothing to speed up the heating process, at least as far as I could see.   Really, really need current measuring equipment for this though...

I personally appreciate your experiments. But the text that we have on the construction of the device describes
a 3.5 cm inner bell ground to a multiple of mains frequency and a 4.5 cm outer bell with which the distance
is adjusted by trial and error.

If I am not mistaken no one did that so far and still there are some encouraging results.
Lets just do what it says in the book and if it still does not perform as expected,
lets get disappointed then.

If you get scum from SS use copper. We are not at the point where we should give up
on this yet.

[Paul-R]

Just to note,please: if you use my ideas with success remember I want to give theml for free to all people.I deny and forbid to patent any of them related to such embodiments and ideas I described on that forum.

Your posts will amount to "Prior Art", and no patent dated after the date of
your posts will be granted if they depend on stuff which you have disclosed.
Paul.

[DOCV]

Hi.  Yes, most of what you say, I already realised, but a ball-park figure was all I was expecting.   Typical UK climate, voltage never seems to vary from 225V RMS, and as I mentioned, current grew progressively from about 2.9A to max-out at 4.2A at the onset of boiling, before falling again to 3.1A when boiling vigorously.

Hi sprocket then all I need is a starting temp to give you a basic COP

[forest]

Now,I know how Davey devices looks like. I haven't been able to remind this shape but now I know. It looks like a current based acoustic transducer. Strange.

[forest]

Sorry.Double posting by mistake