Renewables: "talking 'bout my generation"

KevinG

EricMears wrote: »

If you get an estimate from the pvgis website today, it will be slightly different to that issued a year or two ago.

I assumed that old and new was referring to the Original PVGIS Europe database ("Classic") and the CM-SAF - PVGIS database for Europe and Africa - see http://re.jrc.ec.europa.eu/pvgis/apps4/databasehelp_en.html - rather than differences over time.

EricMears

KevinG wrote: »

I assumed that old and new was referring to the Original PVGIS Europe database ("Classic") and the CM-SAF - PVGIS database for Europe and Africa - see http://re.jrc.ec.europa.eu/pvgis/apps4/databasehelp_en.html - rather than differences over time.

You could be right - but I'm pretty sure I made same choices on both occasions.

Martyn1981

Very nice day today, got 32.5kWh's or 5.82 Os.

The great week ahead, is now mostly grey clouds apart from tomorrow and Saturday. But could be a week of solid suns by the morning. I'm beginning to suspect the rolling of a dice (or should that be die) every 6 hrs, that has weather pics on each side.

Perhaps the sites change the weather so often, to make us click on them more frequently. Some sort of revenue raising scheme?

If 5 days of average, then projecting 104% month. Currently 81kWhs short of breakeven.

Mart.

shafeeq

Not too bad 12.04 kwh / 4.01 O's...

Oscargrouch

4.84 O's; loads of cloud around....:mad:
On the brighter side, already 11.73% above PVGIS number. :j

This year for me seems to be ontrack with last year, will post some graphs after the month end..:)

Kernel_Sanders

Big_Gav wrote: »

They are better if you just want to have a small electricity set up in your shed or something , I made one that works fine for charging my drills and stuff via a 12v battery and a controller / 400w inverter , its a learning curve but was well happy when it started putting out the power

If you are able to measure the output I'm sure people on here would be interested in what wattage you are getting at various times of the day, although with so much wastage I presume a daily production of Wh could only be guessed at.

EricMears wrote: »

If of course you put new resistor in parallel with IH, IH would continue to draw 3kW and so would the resistor. I don't often have 6kW 'spare' from my 4 kW system !

Sorry Eric but I'm totally perplexed at all this. To even begin to understand, I need to know how (and why) a resistor draws extra power when I've always assumed it restricts it.

John_Pierpoint

Kernel_Sanders wrote: »

Sorry Eric but I'm totally perplexed at all this. To even begin to understand, I need to know how (and why) a resistor draws extra power when I've always assumed it restricts it.

Because it is in parallel, not in series; the same electricity goes through the Immersion Heater driven by the voltage drop across that resistor. A load more electricity dodges round the IH through the extra pathway offered by the second resistor.

I am not sure why this "in parallel" option was introduced into the discussion?

EricMears

John_Pierpoint wrote: »

I am not sure why this "in parallel" option was introduced into the discussion?

Because the original question said "somewhere in the circuit" rather than "in series with IH"

[Deleted User]

First of the UPSs installed yesterday eve. Pity it was not in time for the scheduled powercut for half the day hence only 10kWh generated

At least PVGIS has been exceeded for the month

jackieblack

Lovely day yesterday 13kWh generated - happy to be back in double figures after the last week or so