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Old 05-14-2018, 02:06 PM   #1
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Flexible solar panels

Does anyone have experience with flexible panels such as these? I think they might be easier to install on our curved roof?

https://www.renogy.com/renogy-160-wa...e-solar-panel/
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Old 05-14-2018, 03:02 PM   #2
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Originally Posted by ChrisHieronimus View Post
Does anyone have experience with flexible panels such as these? I think they might be easier to install on our curved roof?

https://www.renogy.com/renogy-160-wa...e-solar-panel/
I understand you want circulation around the panels and securing them flat against the roof could create overheating issues.
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Old 05-14-2018, 06:58 PM   #3
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Originally Posted by ChrisHieronimus View Post
Does anyone have experience with flexible panels such as these? I think they might be easier to install on our curved roof?

https://www.renogy.com/renogy-160-wa...e-solar-panel/
Evidently Nanoplane has 20 of them on his roof...
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Old 05-14-2018, 07:01 PM   #4
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Evidently Nanoplane has 20 of them on his roof...
I'm not sure this whole "over-heating" thing isn't apocryphal.

Does anyone have real info on this, because it seems to me that flexible panels are designed to sit on curved surfaces, in full sun.
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Old 05-14-2018, 07:26 PM   #5
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I'm not sure this whole "over-heating" thing isn't apocryphal.

Does anyone have real info on this, because it seems to me that flexible panels are designed to sit on curved surfaces, in full sun.
You would think. But there's lots of inferior products sold to unsuspecting buyers. Not uncommon to solve one issue only to create a new one. Maybe the time spent developing the flex panels wasn't quite long enough to show the premature failure.
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Old 05-14-2018, 07:44 PM   #6
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i don't know the details on your build or your rig, but . . .

Adding a roof deck/rack has multiple benefits.
1. Add ridig panels.
2. Provide shade to your roof
3. Space between panel and roof allows for cooling for both panels and roof.

If I was investing into a big rig with lots of panels, I would just spend some more and go with a roof deck/rack.
But I'll probably end up with a van, so i'll do what ever is cheapest
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Old 05-14-2018, 07:54 PM   #7
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i don't know the details on your build or your rig, but . . .

Adding a roof deck/rack has multiple benefits.
1. Add ridig panels.
2. Provide shade to your roof
3. Space between panel and roof allows for cooling for both panels and roof.

If I was investing into a big rig with lots of panels, I would just spend some more and go with a roof deck/rack.
But I'll probably end up with a van, so i'll do what ever is cheapest
Gl.
Since it's not the cheap batt insulation normally found, and it's in good shape I would leave it alone.



That was weird. I posted this reply quoting on Marky's thread, but put it here, WTF
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Old 05-14-2018, 09:07 PM   #8
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Thermal Characteristics
Operating Module Temperature -40șC to +85șC (-40 F to 185F)
Nominal Operating Cell Temerature (NOCT) 45±2șC
Temperature Coefficient of Pmax -0.42%/șC
Temperature Coefficient of Voc -0.31%/șC
Temperature Coefficient of Isc 0.05%/șC


This is out of the instruction manual from the link you posted
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Old 05-14-2018, 11:18 PM   #9
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I as told by several people that the flexible ones tend to overheat... Apparently Renogy even had to recall some of them due to this issue. I think I'll go rigid and weld a frame or at least a few studs to support the brackets. Just learned MIG welding anyway, so why not put it to good use.
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Old 05-14-2018, 11:50 PM   #10
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It's good that people are trying the flexible panels. It would be ideal to have the entire roof, or a lot of it, covered by panels glued to the roof -- if it works reasonably well.

A few years ago a company that manufactured flexible panels went bankrupt. The panels were being liquidated cheap, at least as to what they had been selling for. I was going to coat my roof with them, but there was no warranty at all. So I passed on those.

From a casual read, Renogy has a good warranty on the panels. How they would work out for bus application, I don't know. The price seems right. I say roll the dice and go for it.
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