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

[Damon Hart-Davis]

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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