[OpenTRV-interest] [OpenTRV-dev] Storage heating, dynamic demand, and OpenTRV

[Bo Herrmannsen]

you say E and W facing... do you have any south facing?

Q: how much space is there in the AVG. uk house for such an install?


2014-09-07 13:28 GMT+02:00 Damon Hart-Davis <EMAIL ADDRESS HIDDEN>:

> Hi,
>
> This isn’t particularly about money (or indeed carbon yet), though given
> the ratio of export to retail tariffs it might pay off.  And the generation
> component is paid just the same.  And many people’s export is ‘deemed’
> anyway.
>
> This is about attempting to minimise grid flows to/from a house which has
> some virtues of its own, and looks trickier than I had expected given how
> fast power generation from PV varies from my own measurements.
>
> Note that in our case because of our E- and W- facing PV we generate
> relatively little power in winter, but still probably only get to consume
> about 50% of it in house because of timing, and a resistive heating dump is
> probably the most robust thing to practice on!
>
> Rgds
>
> Damon
>
>
> On 7 Sep 2014, at 12:21, John Stumbles <EMAIL ADDRESS HIDDEN> wrote:
>
> > On 07/09/14 12:00, Damon Hart-Davis wrote:
> >> Hi,
> >>
> >> I have a thought in the back of my mind about carefully making some
> >> use of residual exported solar PV generation in winter with
> >> highly-efficient storage heaters controllable by an extension of
> >> OpenTRV to supplement a gas-fired system.
> >
> > Wouldn't you get more money selling PV 'leccy back to the grid than it
> would be worth to you as heat?
> >
> >
> > --
> > John Stumbles                                    http://stumbles.org.uk
> > :-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:
> >
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