bqjohn
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« Reply #15 on: July 11, 2007, 09:43:40 PM » |
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no problem, mirror sizes are 2 @ 4' x 3' for 30tube panel, 1 @ 4'x4' for 20tube, hung using banding and penny washers.
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Flamethrower_
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« Reply #16 on: July 11, 2007, 11:18:06 PM » |
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Hi bqjohn,
A couple of questions I would like to ask
1) Where did you source your acrylic mirrors ?
2) Looking at your photo's do I spy an mobile elevating access platform being used ?
If so could you tell me what type it was and whether you used it to install your collector, as I have been toying with the idea myself.
Regards
Rob
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bqjohn
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« Reply #17 on: July 11, 2007, 11:36:37 PM » |
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Hi, the mirrors came from Abbey Distribution via ebay, the access platform hired is a Upright inc. 10m scissor platform hired from www.jck.co.im, it's ideal as it has a roll out platform and it's great for carrying the boxes full of tubes. |
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O MidKnight
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« Reply #18 on: July 12, 2007, 10:24:53 AM » |
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Yes well done. Concerning mirrors. About 12 years ago I purchased some thin stainless steel mirror sheet 2400mm x 1200mm and fitted it on to a low pitched north facing roof opposite my south facing flat plates. Part of the system is in a roof valley.
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Solar heating - makes you feel good when you open the hot tap and when you look at your heating bill
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bqjohn
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« Reply #19 on: July 12, 2007, 06:49:37 PM » |
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I did think about stainless but most of the fabricators in the area only use brushed stainless these days, and they wanted the cost of 2 sheets for special order as what I wanted in size wouldn't accomadate in one 8' x 4' sheet.
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WyeSolar
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« Reply #20 on: July 29, 2007, 06:22:30 PM » |
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Hi bgJohn
Nice looking array.
Can you tell me where you sourced your Dektite flashings from? I can only find them suitable for 75mm and larger pipe sizes.
Many thanks
Uncletig
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« Last Edit: July 29, 2007, 11:58:00 PM by Uncletig »
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Mark
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bqjohn
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« Reply #21 on: July 31, 2007, 06:55:00 PM » |
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Hi, flashings are from http://www.fluesystems.com/flashings/info/dektite_solar.htmThey are good in that you can fit the flashing and remove the rubber after to cut it. I got the ones with high temp. silicone rubber to be safe, in hindsight I could have used to cheaper EPDM material flashing. However I did braze (Eutectic1804) all the joints from the solar manifold to the cylinder, and the heat didn't bother them when I did so. They even have a mould in them to bring the sensor wire through next to the pipe if reqd. Barry |
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bqjohn
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« Reply #22 on: July 31, 2007, 11:12:16 PM » |
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Quote from website, and how true it is!
SolarDek ™
The speciality flashing for solar panels
Don't waste time or risk call-backs by filling holes with silicone (which breaks down quickly with exposure to UV). Use a purpose designed SolarDek™ - the professional choice for flashing solar panels on both tile and metal roofs.
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bqjohn
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« Reply #23 on: April 30, 2011, 11:39:52 PM » |
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Hello, just to let every one know, almost 6,000 pump running hours on Resol BS Pro Controller now.
Probably due for a test of the anti-freeze and PH etc.
On Inspection of the Tubes, Manifold & Frame - I can see no deterioration.
Overall I can say the Navitron Evacuated Tubes and Manifold look as though they will stand the test of time.
4 years later and almost now a return on my outlay.
(Although I did bin the oil boiler 3 years ago)
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Outtasight
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« Reply #24 on: July 13, 2011, 11:19:00 AM » |
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So if you binned the oil boiler, what do you use for backup when solar isn't enough? Or is it always enough now?
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Stuart
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« Reply #25 on: July 13, 2011, 11:50:33 AM » |
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im interested in giving the acrylic mirror a try myself, those thin metal reflectors take a battering from the wind and snow here, lost about 4 of mine and 6 damaged.
are the sheets also lasting well in the weather?
Stu
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8kw woodburner, Big piles of wood, 20 tube solar panel, custom tanks, back up gas boiler, North walls internally insulated
1968 landy that runs on anything and a currently wild meadow garden.
Nr. Tow Law
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