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

[Damon Hart-Davis]

Hi,

Argh!  That’s not what I want to hear PV being used for!  But then I’m a hypocrite…

Rgds

Damon

On 7 Sep 2014, at 12:57, Dave Davies <EMAIL ADDRESS HIDDEN> wrote:

> I dump my excess winter PV into a resistive heating load in the form of an electric kitchen floor as my excess is deemed anyway.
> The thought of powering it off anything but excess is terrible :-)
> 
> Dave
> 
> On 7 September 2014 12:28, Damon Hart-Davis <EMAIL ADDRESS HIDDEN> wrote:
> 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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