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Post by Deleted on Sept 11, 2020 18:51:48 GMT
I've always wondered about using mirrors but I think the size of them and the angle required would make them awkward and rather vulnerable to wind damage.
And how about a large magnifying glass.
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Post by Deleted on Sept 11, 2020 18:56:42 GMT
I suspect solar panels are cheaper than large mirrors and would be more efficient than bouncing light around.....
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Post by Deleted on Sept 11, 2020 19:08:15 GMT
It's all about how much space you have.
Yes solar panels are cheap now. I got a Canadian Solar 365w panel on eBay for £87. Almost a reversal of my 75w panels I paid £350 for in the late 90s...
Seller even offered to deliver it but I was unable to deal with things at the time due to being on the cabin sole all day so I'll probably collect it next week.
It is local to the boat which helps. The delivery of these large panels seems to be a large part of the cost...
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Post by peterboat on Sept 11, 2020 19:27:34 GMT
Bifacial panels are able to generate electricity from the sun shining directly on them and also from the sunlight reflected on the opposite side or underneath the panel. Diffused light from clouds, buildings, or other objects can also hit the back and generate electricity. But not if something blocks the diffused light getting to the underside, unless I'm wrong. Just a quote from a site on google anyway Steve is pleased with them and thats all that matters |
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Post by kris on Sept 11, 2020 19:53:19 GMT
are they mounted on swivels? because I think I’m going to mount them flat 4-6inches off the roof. I prefere fit and forget. I’ve already got a good controller that will handle six of them. They will fit on swivels, but I laid mine flat in boxes I made from decking. Then painted the roof underneath them with brilliant white gloss. The panels are about 5" clear of the roof. I don’t like the swivels so if I buy them they will be mounted something similar. Definately given me something to think about. |
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Post by Deleted on Sept 11, 2020 20:11:35 GMT
My friend who had 4 X 260w panels mounted on his narrow boat got his welder man to weld on 6 M8 studs about 6 inches long for each panel then nutted the panel frames to the studs. Loads of air gap and nice and tidy. You can store items underneath which is useful.
Seems very odd but a couple of years ago I was having a cup of tea with him and some idiot woman, an adult, decided to run down the top of his roof for a laugh. No idea why and she did get shouted at by him afterwards but point is that the panels even though suspended like that did deal with an adult walking on them..
Not that you would be it's handy to know in terms of random idiot behaviour...
Worth doing 3 studs in the long sides to help with strength rather than just one in each corner.
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Post by kris on Sept 15, 2020 13:42:00 GMT
I’m thinking of buying Panasonic solar panels Hit technology. Which incorporates thin film technology. Or should I buy perc maybe Canadian solar or Perlight panels which is the other high efficiency panel tech. Um what to do? I know this is a first world problem. But worth thinking about as I will probably be using them for the next 20 years or so. Bought and installed two of these recently. Really impressed with the low light capabilities. Even in full cloud I'm getting 10-15 amps. www.bimblesolar.com/solar/individual/ja315w-bifacial-solar-panel unfortunately bimble don’t have any and don’t know when they will have them again. |
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Post by Deleted on Sept 15, 2020 14:17:36 GMT
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Post by kris on Sept 15, 2020 14:25:06 GMT
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Post by Deleted on Sept 15, 2020 14:48:30 GMT
No not the same ones. Wattage is lower. |
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Post by kris on Sept 15, 2020 16:49:55 GMT
No not the same ones. Wattage is lower. Not by much though. They are the same manufacturer and the same bi facial model. |
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