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Post by kris on Sept 11, 2020 9:05:50 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.
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Post by Deleted on Sept 11, 2020 15:16:10 GMT
I'm looking at the idea of two panels to fit flush on the roof ... not rigid tilting type ... about 300w. No idea which are the best etc but will be interested in any info you discover kris. I'll also be looking at a firm to fit them ... I would want a much neater, better job than I could hope to do Rog
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Post by Deleted on Sept 11, 2020 16:06:28 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
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Post by kris on Sept 11, 2020 16:37:14 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-panelunfortunately they’ve only got two left, I’ll call them though they look good. Thanks.
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Post by kris on Sept 11, 2020 16:39:15 GMT
I'm looking at the idea of two panels to fit flush on the roof ... not rigid tilting type ... about 300w. No idea which are the best etc but will be interested in any info you discover kris. I'll also be looking at a firm to fit them ... I would want a much neater, better job than I could hope to do Rog unfortunately any panel that is actually on the roof will be less efficient due to heat. But mounted flat but just off the roof. I’ve mounted a few like that this year.
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Post by Deleted on Sept 11, 2020 16:43:41 GMT
unfortunately they’ve only got two left, I’ll call them though they look good. Thanks. They'll get more in quite quickly. Make sure you get a decent controller, preferably 60 amp, but a 40 will just about work them ok. I was getting upwards of 40 amps through the controller during peak periods in the summer. Cloudy today, but still peaked at 20amps a couple of times, and batteries were full by 1 o'clock.
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Post by kris on Sept 11, 2020 16:54:56 GMT
unfortunately they’ve only got two left, I’ll call them though they look good. Thanks. They'll get more in quite quickly. Make sure you get a decent controller, preferably 60 amp, but a 40 will just about work them ok. I was getting upwards of 40 amps through the controller during peak periods in the summer. Cloudy today, but still peaked at 20amps a couple of times, and batteries were full by 1 o'clock. 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.
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Post by Deleted on Sept 11, 2020 17:03:23 GMT
They'll get more in quite quickly. Make sure you get a decent controller, preferably 60 amp, but a 40 will just about work them ok. I was getting upwards of 40 amps through the controller during peak periods in the summer. Cloudy today, but still peaked at 20amps a couple of times, and batteries were full by 1 o'clock. 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.
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Post by peterboat on Sept 11, 2020 17:46:49 GMT
Richard has 4 bifacial panels for his milk float they will be mounted on a white fibreglass roof to allow reflection, amazing tech that allows this, they are talking high 20% efficiency so worth the money
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Post by Deleted on Sept 11, 2020 17:55:58 GMT
Richard has 4 bifacial panels for his milk float they will be mounted on a white fibreglass roof to allow reflection, amazing tech that allows this, they are talking high 20% efficiency so worth the money How does reflection work in the case of Bedruthins example of the panel being boxed in? Does some of the energy/light pass through the panel?
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Post by peterboat on Sept 11, 2020 18:25:27 GMT
Richard has 4 bifacial panels for his milk float they will be mounted on a white fibreglass roof to allow reflection, amazing tech that allows this, they are talking high 20% efficiency so worth the money How does reflection work in the case of Bedruthins example of the panel being boxed in? Does some of the energy/light pass through the panel? I think it must do, normally mounted on a house roof they would get light from below. I am mounting them high enough to keep cool and for the reflected light. time for google I suspect
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Post by Deleted on Sept 11, 2020 18:30:33 GMT
How does reflection work in the case of Bedruthins example of the panel being boxed in? Does some of the energy/light pass through the panel? I think it must do, normally mounted on a house roof they would get light from below. I am mounting them high enough to keep cool and for the reflected light. time for google I suspect I thought it was refracted light that the underside picked up. i.e. even in shadow/under cloud there is some energy to be picked up. Enclosing the panels or mounting them too close to the roof would reduce the refracted light/energy. Just my thoughts though.
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Post by peterboat on Sept 11, 2020 18:34:50 GMT
I think it must do, normally mounted on a house roof they would get light from below. I am mounting them high enough to keep cool and for the reflected light. time for google I suspect I thought it was refracted light that the underside picked up. i.e. even in shadow/under cloud there is some energy to be picked up. Enclosing the panels or mounting them too close to the roof would reduce the refracted light/energy. Just my thoughts though. 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.
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Post by Deleted on Sept 11, 2020 18:38:43 GMT
I thought it was refracted light that the underside picked up. i.e. even in shadow/under cloud there is some energy to be picked up. Enclosing the panels or mounting them too close to the roof would reduce the refracted light/energy. Just my thoughts though. 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.
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Post by Clinton Cool on Sept 11, 2020 18:47:35 GMT
I've wondered from time to time whether in low sun conditions (i.e. winter) having a large mirror next to the panel (opposite side to the sun) angled so that the reflected sun hits the centre of the panel might make a big difference to the energy created? Anyone?
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