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Author Topic: NEW design, Cost effective, double axis 2kw PV Solar Tracker  (Read 54751 times)
clockmanFR
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« on: June 22, 2013, 12:39:55 PM »

The NEW design, Cost effective, double axis 2kw PV Solar Tracker.

I will post a few pictures of the new design of 2kw PV tracker as it is built and installed.

This design relates to the tested  1.5kw, low cost, simple design at :-
http://www.navitron.org.uk/forum/index.php/topic,16743.0.html 
  and    http://www.echorenovate.com/solar-energy.php

A few pics of the installation,...... Grin


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clockmanFR
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« Reply #1 on: June 22, 2013, 12:44:32 PM »

Pics
The mounting pole.
The Cable pipes.
Help!


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stannn
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« Reply #2 on: June 22, 2013, 01:01:00 PM »

Is she a nimby clockman, trying to destroy it?
Seriously though, in picture 1, you have welded 2 parallel horizontal angle sections which each are cantilevered into fresh air. If you wanted to save a few bob then there would be no loss of performance if you stopped them at the base of the tube. It would still be a set of trusses.
Stan
« Last Edit: June 25, 2013, 04:02:08 PM by stannn » Logged

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 #3 on: June 22, 2013, 03:18:54 PM »

Fab post as ever.
Greater love hath no woman!  Standing there holding it upright whilst the concrete dries. Hope you were doing something useful like downing a beer. genuflect
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biff
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« Reply #4 on: June 22, 2013, 04:56:16 PM »

I suspect our friend Clockman has
                                     Put a touch of superglue on the pole.
                                     The lovely lady does look as though she is trying to pull with one hand and push with the other.
                                      But it could not be superglue,! C/M would not do a horrible deed like that.?
                                                Biff
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clockmanFR
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« Reply #5 on: June 23, 2013, 07:55:59 AM »

Hi Stannn,

 trying to destroy it? No just that one has to keep the other half in formed of field operations. Grin

you have welded 2 parallel horizontal angle sections which each are cantilevered into fresh air. Yes I know it looks odd, but its 40 x 40 angle steel and I now leave them complete. It helps squaring up the Mounting pole in the hole when its vertical, resting on the porous and hollow concrete blocks that I keep perfectly flat but loosely put in the hole. I use small slivers of slate for the final true vertical alignment under the 40 x 40 angle, and before I put the final 350mm layer of concrete in.

Tod, Biff, I thought I would give the photo to NAVITRON, for their renewable Energy Calendar this year, perhaps for the Month of MAY, with appropriate suitable title.  Shocked  

Or if Navitron staff are busy, then perhaps MARTIN could rustle something up from each of the appropriate areas Huh??

« Last Edit: June 23, 2013, 08:00:24 AM by clockmanFR » Logged

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stannn
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« Reply #6 on: June 23, 2013, 09:56:53 AM »

You do have 2 other options clockman to reduce fabrication time.
a) You only need 3 trusses to resolve lateral loads from any direction into the foundation.
b) Calculations using wind loads may show the trusses to be unnecessary. That is you would use a longer mast extended to the bottom of the foundation. I appreciate that this does not suit your current foundation design. It's also easier to mow around.
Stan
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stannn
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« Reply #7 on: June 23, 2013, 12:38:59 PM »

No, cancel b) clockman. I've just done a sum showing that it's not a good idea when considering yield strength or deflection (low natural bending frequency).
Stan
« Last Edit: June 23, 2013, 12:41:02 PM by stannn » Logged

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 #8 on: June 23, 2013, 05:05:23 PM »

Nice work (as usual) CM, love the step by step pics on the blog, though I was going to rib you for using crimp joints (my favourite) until I saw the  "I solder them too"   genuflect
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http://lifeattheendoftheroad.wordpress.com/

'Off grid' since 1985,  Proven 2.5kW, Proven 6kW direct heating, SI6.OH, 800ah Rolls, 4.75kW PV ,4xTS45, Lister HR2 12kW, , Powerspout pelton, Stream Engine turgo, 60 x Navitron toobs and a 1500lt store. Outback VFX3048 and 950ah forklifts for backup,
uber39
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« Reply #9 on: June 24, 2013, 02:55:29 AM »

As always, I tip me hat to ya, fantastic work AGAIN.
         uber39
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M
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« Reply #10 on: June 24, 2013, 07:00:32 AM »


Tod, Biff, I thought I would give the photo to NAVITRON, for their renewable Energy Calendar this year, perhaps for the Month of MAY, with appropriate suitable title.  Shocked  

Perhaps - 'No greater love hath a woman for her man'

I thought of several more, but the words 'appropriate suitable title' meant that some might be accidentally misinterpreted, such as references to firm bases, or assisting erections.  whistlie

Mart.
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Just call me Mart.     Cardiff: 5.58kWp PV - (3.58kWp SE3500 + 2kWp SE2200 WNW)
todthedog
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« Reply #11 on: June 24, 2013, 11:31:24 AM »

Like it Mart Grin
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clockmanFR
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« Reply #12 on: June 24, 2013, 09:49:06 PM »

Hi Uber39 good to here from you again. How’s those trackers of yours doing. ?

And yes Uber39,  I did have a 50mm outrigger spacer bend its mounting plate during some strong storm winds, but the design is now  suitably amended. (See pic of damaged bent plate support, this arm is where the actuator is fixed to the declination adjuster frame).

Thanks for the comments Stannn, it’s a fine line between using sufficient materials to do the job and yet keeping those embedded materials to an absolute minimum.
 I am also worried about using so much concrete for the foundation base.  Cry
And I may mention in the “How to make a cost effective, 1.5kw & 2kw, double axis PV Solar Tracker” book,  That perhaps 4 off 1m x 1m x 1m, stainless steel rock filled cage ‘bastions’ dug into the ground and around the centre mounting pole, and some sort of strong connction to plates in to the bases of the in ground ‘bastions’ might suffice.  Any comments?

Eye Paul after seeing so many French House fires due to the common use of ‘chocolate block’ connectors here, I am and allways have been a great beliver in properly supported soldered connections.

Mart, my lovely,  Kiss  Yes had fun with pic descriptions  Grin but it was really, really to show scale… facepalm


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« Last Edit: June 24, 2013, 10:06:33 PM by clockmanFR » Logged

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stannn
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« Reply #13 on: June 25, 2013, 03:59:37 PM »

http://www.google.co.uk/search?q=renewable+girls&client=safari&hl=en&tbm=isch&tbo=u&source=univ&sa=X&ei=CK7JUefOEYa40QXhjICIAQ&ved=0CC0QsAQ&biw=1024&bih=672

Some ideas here for the Navitron calendar, first 12 pics. Funny how a 250W panel is just the right size for sunbathing.
Stan
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biff
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« Reply #14 on: June 25, 2013, 05:14:21 PM »

"You want cartoon" Stann
               Page 13 pic 3,is exellent and a great way to start off.
                                                                        Biff
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