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I thought most ppl used GCH like me ??
Not round here! - the majority are on liquid gold aka oil, and turn their boilers off from May - October.
like whats your export rate to grid to work out
Irrelevant when deemed.
Discuss Do immersun type devices work in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net
I thought most ppl used GCH like me ??
like whats your export rate to grid to work out
Not round here! - the majority are on liquid gold aka oil, and turn their boilers off from May - October.
Irrelevant when deemed.
Thanks for the help see answer in quote aboveGiven that is you heat your hot water cylinder with electric, I thought most ppl used GCH like me ??
If you do use GCH - the benefit could be less but still rewarding, again its all about knowing your systems, your needs and whats possible with your system, especially figs
Domestic export is always based on 50export unless you have an import export meter.
Most people do not.
Then your getting paid export plus any savings you make from using more than 50%
@Worcester renewables.
Thanks I didn't know it was a proportional system .
So it will dump what ever is spare into your system?
Good too know.
like whats your export rate to grid to
work out ultimately your ROI !
Thanks for the help see answer in quote above
If HOWEVER like me you use the vast majority of your generated electric - there is very little left to use elsewhere and this is what I am suggesting.... the more sauvy PV owner would know this by either monitoring devices or by use of PVO for example
Your PV system is giving you a return over 8 - 10 years which you thought was a good investment - so why isn't an ImmerSun type device when it gives the same return?
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Correct, I agree.
Try using the eco-eye Eco-Eye | Real Time Electricity Monitors | UK - it has an RF device and you can link it up through your pc via cosm (ex pachube) to pvoutput.org (Eco-Eye | Real Time Electricity Monitors | Eco-Eye with Microgeneration/Photovoltaic Installations Eco-Eye | Real Time Electricity Monitors | Eco-Eye used with your computer)
This one uses that system above and has an ImmerSun installed - you can wee how it tracks plus when they had breakfast and put the kettle on
View attachment 17982
One small point we have found....None of the monitoring devices work with Immersun
For more than a year I have been running an early DIY immersion controller, with energy logging capability. Attached is a bar graph of the generation in kWh for April 2013 (2.88kWp array).
The logging allows tracking of where the energy goes: yellow indicates export to grid, red means it has been diverted to the immersion heater, and green marks the PV energy that has been used elsewhere in the household. The system has proven to be so effective that we rely on it entirely for domestic hot water in summer. And, as you can see from the plots, there is still room for improvement, as 42% of our solar PV production was pumped into the grid.
Do immersion controllers work? Certainly they do!
View attachment 19012
I'm considering PV, with flat roof garage could get 6kw system.
heating system is oil, so in addition to immersion i was considering some additional wall mounted rads with heating element direct from PV, can the immersun divert to more than one outlet or would multiple units be needed?
BruceB, graph is a very good idea, a couple of very low generation days - were these much more frequent over winter??
Would it even be worth it going over the domestic threshold of 4KW, considering for a moment rates change commencing Aug 2013 and the reduction in tariff going over 4kw ??
The immersion question is possibly secondary to this ?
All I would say is do the numbers very carefully - I assume you will stay in the building for the next 20yrs too !!!
Reply to Do immersun type devices work in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net
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