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

[Bo Herrmannsen]

oh... my mind just deadlocked on me when you said those directions... most
have theirs south facing...

but yes there are 2 ways so far with off the shelf stuff

a heat pump
and a hot water cylinder with in built electric heater...

cant remember who on OEM that did a system much what you asked

2014-09-07 19:20 GMT+02:00 Damon Hart-Davis <EMAIL ADDRESS HIDDEN>:

> Only about 200W for my off-grid system; this thought is about grid-flow
> balancing and dynamic demand generally, not just my situation…
>
> Rgds
>
> Damon
>
>
> On 7 Sep 2014, at 15:48, Bo Herrmannsen <EMAIL ADDRESS HIDDEN> wrote:
>
> > 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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> >
> > --
> >                  |||||
> >                @(~Ô^Ô~)@
> > -------------oOo---U---oOo-------------
> > |                                     |
> > |  Bo Herrmannsen                     |
> > |                                     |
> > |                                     |
> > | "blessed are the "cracked",         |
> > |  for its they who let in the light" |
> > |                         Ooo         |
> > |_________________ooO____(   )________|
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> >                    \_)
> >
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-- 

                 |||||
               @(~Ô^Ô~)@
-------------oOo---U---oOo-------------
|                                     |
|  Bo Herrmannsen                     |
|                                     |
|                                     |
| "blessed are the "cracked",         |
|  for its they who let in the light" |
|                         Ooo         |
|_________________ooO____(   )________|
                 (   )    ) /
                  \ (    (_/
                   \_)
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