[OpenTRV-dev] Ultrasound via radiator pipes

[Jack Kelly]

We have quite a few plastic pipes in our ch system.
On 1 Apr 2013 17:40, "Damon Hart-Davis" <EMAIL ADDRESS HIDDEN> wrote:

> How would the pipes themselves do as the transfer medium if all metal?
>  Mine somehow convey all manner of interesting audible noise.
>
> The alternative might be infra-sound pipe-knocking with tiny hammers!  B^>
> / 2
>
> Rgds
>
> Damon
>
>
> On 1 Apr 2013, at 17:38, Mike Stirling wrote:
>
> > On 01/04/13 16:01, Damon Hart-Davis wrote:
> >> Hi,
> >>
> >> BTW, how idiotic is my wild idea of using ultrasound (as an alternative
> to RF) to have the nodes communicate over the water-filled radiator pipes
> back to the boiler node?
> >>
> >> Rgds
> >>
> >> Damon
> >> _______________________________________________
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> > Probably doable, but from my admittedly very limited acoustics
> experience I would imagine coupling into the water through the pipes would
> not work very well (the pipes are rigid).  The transducer would need to be
> in direct contact with the water for maximum power transfer, which would
> not be an easy retro-fit.
> >
> > Mike
> >
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> >
>
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