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Author Topic: Stable  (Read 19930 times)
stannn
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« on: June 17, 2011, 03:21:02 PM »

I have a stable of strong wooden construction with a roof of euro-section (rhomboid) steel sheets. The ponies are gone. The roof area at 90 degrees to the slope is 9.3m x 2.5m. The slope is 1 in 4 or about 14 degrees. There will be no shading. The building is about 25m from where the grid enters my cottage. Is this a suitable surface for PV? Can I run the cables overhead, because underground is a big job? Which panel maker is the most favoured?
Stan
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stannn
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« Reply #1 on: June 17, 2011, 04:02:00 PM »

I should have added that the roof is south facing.
Stan
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Richard Owen
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« Reply #2 on: June 17, 2011, 04:16:13 PM »

Funnily enough, I was looking at a stable installation for a neighbour only yesterday.

I don't see why your installation shouldn't be easily doable. Are the rafters wood or steel?

Pitch is a little low, but horizontal panels work Ok so there's no reason why panels mounted on your roof shouldn't.

Is there a driveway between the stable and house? If so, underground is probably better than overhead. 25m doesn't sound insurmountable. Are there particularly difficult ground conditions?
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« Reply #3 on: June 17, 2011, 04:43:44 PM »

Should be fine. You may want to support the array a little to get a higher angle, about 30 degrees is a good angle (without knowing your location).
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stannn
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« Reply #4 on: June 17, 2011, 04:52:44 PM »

Smegal
Latitude is 53 degrees.
Stan
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« Reply #5 on: June 17, 2011, 05:02:36 PM »

A rule of thumb is lattitude -10 degrees but someone will be along shortly to correct me.
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marshman
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« Reply #6 on: June 17, 2011, 05:45:32 PM »

Notwithstanding that the install is on a stable roof and not on a domestic dwelling, making the panels stand at a steeper angle would raise them more than 200mm from the surface of the roof. This may have planning implications???

My install is only at 11 degrees and to be honest it appears to perform as well as, if not better than, most other systems in terms of kW/kWpk generated that I know of in the UK. Winter performance is compromised but then winter generation is a tiny percentage of the total annual output. I also seem to benefit when its cloudy from light reflected off of the clouds - more so than systems at a steeper angle.

Roger
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stannn
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« Reply #7 on: June 17, 2011, 05:58:24 PM »

Roger
That is good information. Do you have any figures to support that statement?
Stan
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stannn
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« Reply #8 on: September 11, 2011, 10:43:29 AM »



Here is the installed system.
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stannn
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« Reply #9 on: September 11, 2011, 10:49:54 AM »



Here it is again at the size that I wanted. I ordered it from Navitron and the 2 guys in the picture are the contractors.
Stan
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2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
stannn
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« Reply #10 on: September 11, 2011, 10:52:24 AM »

Can anyone tell me which format I need to make this photo a sensible size size?
Stan
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billi
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« Reply #11 on: September 11, 2011, 10:57:29 AM »



 Smiley


* navi.jpg (110.24 KB, 800x600 - viewed 1026 times.)
« Last Edit: October 09, 2011, 01:44:47 PM by billi » Logged

1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
stannn
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« Reply #12 on: September 11, 2011, 11:02:06 AM »



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2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
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« Reply #13 on: September 11, 2011, 11:24:43 AM »

If you click on the photo it does come up full size. There are 10 Sharp 245W modules. The SMA 2500 high-frequency inverter is in the stable along with the generation meter and isolation switches. Then there is a 50m length of armoured 10mm cable to the consumer unit. It is huge. This cable is initially buried before passing through the roof of my workshop and then is supported by a steel catenary to the cottage.
I'm still like a little boy running to check the power output each time that the sun comes out. The roof angle is only 14 degrees but I have seen 2506W from this nominally 2450W system.
Stan
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2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
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« Reply #14 on: September 11, 2011, 11:28:17 AM »

congradulations stan,
                    it looks brilliant,even the installers look happy which is a good sign.i wish you luck with it.
                                                                                                       biff
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An unpaid Navitron volunteer,who has been living off-grid,powered by wind and solar,each year better than the last one.
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