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

[Bo Herrmannsen]

it was an electric storage heater i had in mind.... cylinder with water in
it and and some point an electric heating element

at buttom 2 pipe connections... water in and out...

2014-09-08 12:00 GMT+02:00 Damon Hart-Davis <EMAIL ADDRESS HIDDEN>:

> Hi,
>
> The key thing I’m aiming for here is short-term controllability to balance
> second-by-second flows in/out of the house, plus storage to carry that
> energy to a more useful time.
>
> Thus an electric storage heater rather than a normal one.
>
> Your DHW idea is in principle fine if done right, but storage in water
> isn’t plausible for everyone.
>
> Anyhow, only a thought experiment, so good to thrash it out!
>
> Rgds
>
> Damon
>
>
> On 8 Sep 2014, at 10:57, Bo Herrmannsen <EMAIL ADDRESS HIDDEN> wrote:
>
> > my thought of a tank with electric heater is simply just that i did not
> know any other hardware that could do the job
> >
> > maybe there are a electric heater you just plumb in?
> >
> > 2014-09-08 11:43 GMT+02:00 Damon Hart-Davis <EMAIL ADDRESS HIDDEN>:
> > Hi,
> >
> > Sorry, not sure if I missed this one or not.
> >
> > My thought experiment is for situations such as mine with solar PV and
> ‘instant’ DHW (no tank, and no solar thermal), which I sure is not unique!
> >
> > Thanks for everyone’s feedback: very helpful!
> >
> > Rgds
> >
> > Damon
> >
> >
> > On 7 Sep 2014, at 15:57, Bo Herrmannsen <EMAIL ADDRESS HIDDEN>
> wrote:
> >
> > > hmmm
> > >
> > > just on top of my head.... an well insulated hot water cylinder with
> an electric heating element in series with the rad loop..? then both the
> gas heater and the electric can heat up the water at the same time...
> > >
> > > of course you have to wire in the electric heating element so the
> system will not boil...
> > >
> > >
> > > in denmark the cylinder normally hold 100 liters of water, not sure if
> there are space enough in an UK home for that... but if you can get them in
> 50 liters you could pick 2 of them and place them where there is space
> > >
> > >
> > > but will the gas heater make hot drinking water from that same loop?
> if not my idea is not worth much....
> > >
> > >
> > >
> > > 2014-09-07 13:00 GMT+02:00 Damon Hart-Davis <EMAIL ADDRESS HIDDEN>:
> > > 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.  This would also help with grid balancing.
> > >
> > > (Yes, I am allergic to electric resistance heating in most
> circumstances, but if done carefully this might be virtuous.)
> > >
> > > Does anyone know of off-the-shelf UK storage heaters that have
> electronically-controllable fans/vents and that can retain the bulk of
> their heat for much more than a day, preferably a week.
> > >
> > > Rgds
> > >
> > > Damon
> > >
> > >
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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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> >
> >
> > --
> >                  |||||
> >                @(~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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-- 

                 |||||
               @(~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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