Renewables: "talking 'bout my generation"

mac2008

I've been a bit quiet over the winter, as frankly, my generation wasn't worth writing about, but a cracking 5.52 O's yesterday, or 1.104 H's - obviously the best of the year so far.

System woke up just after 7am and by 8am I'd already generated more than some complete days in the winter. Hit the big 5 O by about 4pm.

I celebrated by doing several loads of washing, and pressure washing the patio.

Oscargrouch

How yesterdays HAWAII (5.16 O's) arrived....

The_Green_Hornet

ChopperST

shavy65 wrote: »

Does ur immerSUN show how much power you`ve transferred to the immersion heater?
I`ve got a solic thing which shows when power is being diverted to the immersion but I have no idea of how much.....any ideas?

Thanks

I have the Immersun 2 which shows us how much we are importing / exporting etc. and gives a daily, weekly, monthly and yearly break down of how much it has diverted to the tank.

I was offered similar systems which didn't demonstrate how much they had diverted but I wanted something that would allow me to monitor the diversion. You also put in the fossil fuel tariff you would normally use to heat your water so the unit prices up the savings its made you.

See below from their website.

http://www.immersun.co.uk/528-2/

zeupater

InVestor wrote: »

No, you didn't say anything, you wrote:

Now, if you had written "I have two systems with near identical kWp, or even better "I have two different systems with near identical kWp" then your intention would have been a lot clearer.

You seem to have gone to the same maths school as oscargrouch.

I would say it could make a notable difference, even on the same day depending on the weather.

I don't agree. At any time of year a different pitch will make a difference, the time of year and type of weather affecting by how much.

The fact you are ignoring these differences is why your conclusions are flawed. Feel free to calculate different pitches and orientations into freely available calculators to see your error in ignoring them.

Not when you are ignoring other factors affecting those two systems.

Hi All

Oh dear, there's always one., it just makes you wonder if it's always the same one .... :rotfl:

Anyway, I seem to have had no problem in understanding Dave Fowler's post - is it that we're on a far higher intellectual plane than most others - I think not

I'm confident that Dave would have no need for anyone to post to defend his position, but considering how ridiculous the referenced post is, I would still look to address the points above in order ...

"Now, if you had written" ... pure rubbish and likely written purely for obfuscation sake as the meaning was pretty clear as originally written.

"the same maths school" ... well, to me, taking due south as the zero datum the difference mathematically is definitely 4 (-4+8) so I, along with many others, must have attended a decent "maths school" too.

"could make a notable difference" ... I do note that it "could", not should or would. When it comes down to it, the generation comparison which Dave is interested in would be the average over time. However, as correctly stated, earlier in the year the steeper array would likely have a marginal advantage whilst later it would be the opposite. With the two arrays being in close proximity weather conditions would make very little difference - it's likely that rain, sun, cloud cover would be almost completely mirrored for the two systems, therefore total irradiation would be as close to equal as possible for any form of direct comparison, whether that be at a minute by minute -or- annual basis.

"Feel free to calculate different pitches and orientations into freely available calculators to see your error in ignoring them." ... From what's was posted, it's pretty obvious that Dave really does understand that there would be a difference, after all, isn't that what & why the comparison is being made ...

"Not when you are ignoring other factors" ... well, excluding what has been covered - mains voltage (same), weather (same), irradiation (same), orientation (known, minor variance), pitch (known variance), technology (known) the only other major variable would be availability, which, as long as outages and equipment failure affecting either system are logged then that would be a known too, therefore what factors are being ignored ? ...

I would suggest that the only logical approach to comparing performance between systems based on income would involve taking account of the original capital investment. I know people who would regularly generate a return of over £100/day from their systems, however, they cost significantly more than ours ....

HTH
Z

jackieblack

This used to be such a friendly thread, with light hearted yet informative banter.
I haven't been around much for a while but it all seems to have got terribly argumentative lately.

(I think it may be time for me to find out how the 'ignore' function works )

sly_dog_jonah

shavy65 wrote: »

Does ur immerSUN show how much power you`ve transferred to the immersion heater?
I`ve got a solic thing which shows when power is being diverted to the immersion but I have no idea of how much.....any ideas?

Thanks

Yep it tells you:
1) current power being diverted to immerSUN (e.g. 1234W)
2) units diverted to ImmerSUN that day (e.g. 12.2kWh)
3) total units diverted to date (eg 1700kWh)

mac2008

hmm - looking at Oscar and THe Green Hornet's graphs has given me monitoring envy! Might have to invest in something better than my GEO Solo PV. Perhaps their new Chorus PV, or a Wattson would be better?

Those graphs are also a nice illustration of how PV does shift some load to daytime (for those with PV anyway).

Dodo0808

I've just had my PV system installed today, so I would like to start posting my results.....if I can get my head around the figures on the monitor.

tunnel

Dodo0808 wrote: »

I've just had my PV system installed today, so I would like to start posting my results.....if I can get my head around the figures on the monitor.

What size install do you have?, monitor type? which direction does your install face? You can post figures but it would help others for comparison if they knew what they were comparing against.