Mylar Reflection Output Difference

[AmpD]

Reflectix will also break down in uv.

 

[x9q3z6m1]

It's not, it's monofacial. That's why I did it this way. I wanted to see best N-type cells faced in one direction only. My bifacials have horrible gain. I don't have a single panel that could be used properly for this application. I still don't know why people like vertical mount.

I have yet to see a solar farm with panels installed vertically. Tells me right away it probably sucks.

 

[Will Prowse]

I have yet to see a solar farm with panels installed vertically. Tells me right away it probably sucks.

Exactly

 

[harjms]

I bought bifacials because they were cheap; winter time will be interesting if it snows, but mainly I bought them because they were cheaper than some of the mono panels of similar specs.

 

[buck Taylor]

I just absolutely love, low tilt, cheap ballast ground mounts.

It's not, it's monofacial. That's why I did it this way. I wanted to see best N-type cells faced in one direction only. My bifacials have horrible gain. I don't have a single panel that could be used properly for this application. I still don't know why people like vertical mount.

I love your experiments on the bifacials. The data has helped me decide against them.

As for all vertical mounted experiments I have seen encourage me about using single face panels. The southern and eastern and western wall mounted panels on agricultural buildings has real potential without sacrifice of productive grazing and crop land.

 

[Will Prowse]

I bought bifacials because they were cheap; winter time will be interesting if it snows, but mainly I bought them because they were cheaper than some of the mono panels of similar specs.

They usually have a better warranty as well. The transparent back sheet seems to fair well over time versus the white traditional back sheet.

 

[fuzzmunky415]

Reflectix will also break down in uv.

Yet still ideal for playing/testing. Flat or lining a dish for more concentration.

 

[Will Prowse]

Finally some studies coming out on this. I have it searched for any but this video covers some good ones. There's literally no benefit to these things.

 

[Will Prowse]

Winter is the only time these vertical mount panels can even match a standard mount panel. During summer you're getting 50% less output.

 

[x9q3z6m1]

Finally some studies coming out on this. I have it searched for any but this video covers some good ones. There's literally no benefit to these things.

Maybe to impress your neighbors with your solar powered fence?

Kidding aside, I can see a theoretical benefit - a flat surface on end takes up much less acreage. Probably makes the most sense to install panels vertically on top of existing vertical infrastructure. I have some experience building fences, and the tolerances for placement of those fence posts in the video must be pretty hard to achieve.

 

[Mart Hale]

The downside of reflecting to the panel in the heat of the year is degradation of the solar panel. I would guess the extra heat would cause the panel's life to be shortened. But... if your are in a colder area should be useful.

 

[Koyaanisqatsi]

There's literally no benefit to these things.

When PV panels are cheaper than regular fencing materials (literally the case in my area around January), it's beneficial to mount them vertically.

 

[42OhmsPA]

If you're in the right location vertical bifacials make a whole lot of sense, just ask @shadowmaker

Thread 'My 44kW vertical and bifacial set in Finland plus now 15kW roof mounted too.'

Dec 4, 2022

New to the forum, new to the solar energy.

Have 63 Bluesun bifacial 700W N-type shingled panels, 22 old electric poles, shit load of underground cable, 51 x 6m 40x40x3mm marine grade aluminium, 2 Bluesun 15kW on-grid inverters, 2 Deye 15/12kW hybrid inverters, 30kW lead acid battery and 4 x 5kW LiFePo4 batteries. Have also 2kW wind turbine for the fun of it. Almost everything is around 50% off compared to shop prices around here and one of the main objectives is trying to keep costs down.

Maybe a set like this is nothing new to the forum, but I doubt no one has installed panels this way...

• shadowmaker
• Replies: 628
• Forum: Residential Solar

• 

 

[littleharbor2]

I would say an Antarctica or artic circle system with no obstructions would be great for vertical mount.

a Vertical Rotating Pole mount

 

[fuzzmunky415]

a Vertical Rotating Pole mount

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www.hapco.com

 

[eppich8479]

The frequency of blue-green light is about 700 x 10^14 Hz. So, if you spin a conventional solar panel at that frequency, it becomes bifacial.

Wouldnt you have to spin it twice as fast so you

The huge issue with this is the temperature differential on the solar panel. Having those water lines not leak is extremely difficult. If you can pull it off then so be it. I'd rather just paint a hose black and throw it on the ground and run water through it

Uponor make pex-a which is flexible. You can do a single run. But you might be right that cooling could cause a gradient and it would shatter. Maybe when i have money to burn ill try it though.

 

[AmpD]

Yet still ideal for playing/testing. Flat or lining a dish for more concentration.

I had my ground deploy out with some layed out in front. It did increase the gain.

Might be a good idea for a video. To experiment with different kinds of reflective roof or ground surfaces like shingles of different colors, metal roofing, polished aluminum, elastomeric white roof coating, painted wooden surfaces, concrete, brick, ect

Things that are more applicable long term that dyi’s will be encountering or considering in their builds.

 

[fuzzmunky415]

I had my ground deploy out with some layed out in front. It did increase the gain.

Might be a good idea for a video. To experiment with different kinds of reflective roof or ground surfaces like shingles of different colors, metal roofing, polished aluminum, elastomeric white roof coating, painted wooden surfaces, concrete, brick, ect

Things that are more applicable long term that dyi’s will be encountering or considering in their builds.

I think the whole idea of reflectivity/albedo/diffuse/specular/concentrating, etc. is ripe for investigation. If only we could find someone who shares that interest, and has the capacity to perform experiments while having a communication platform to disseminate the real world results. A boy can dream...

 

[GotBoom!]

Before and after adding the mylar sheet:

View attachment 310246

Without reflective sheet:
View attachment 310248

With reflective sheet:
View attachment 310247

3.87% increase. 11am, so not peak irradiance.

Hey @Will Prowse, rather than focusing on instant output performance, I would love to see a vertically mounted Bifacial and a mylar reflective surface in front of the panel. Does it improve performance (Yes!), does it improve the number of hours of production, Does it affect Volts/Amps capacity (it does not). Vertical bifacials and reflective mylar can significantly increase the efficiency of a system. BTW, I see this as the future of Agrivoltage system development.

 

[Will Prowse]

Hey @Will Prowse, rather than focusing on instant output performance, I would love to see a vertically mounted Bifacial and a mylar reflective surface in front of the panel. Does it improve performance (Yes!), does it improve the number of hours of production, Does it affect Volts/Amps capacity (it does not). Vertical bifacials and reflective mylar can significantly increase the efficiency of a system. BTW, I see this as the future of Agrivoltage system development.

 

[On_The_Road]

I have yet to see a solar farm with panels installed vertically. Tells me right away it probably sucks.

Lemme help you with that....

Thread 'My 44kW vertical and bifacial set in Finland plus now 15kW roof mounted too.'

Dec 4, 2022

New to the forum, new to the solar energy.

Have 63 Bluesun bifacial 700W N-type shingled panels, 22 old electric poles, shit load of underground cable, 51 x 6m 40x40x3mm marine grade aluminium, 2 Bluesun 15kW on-grid inverters, 2 Deye 15/12kW hybrid inverters, 30kW lead acid battery and 4 x 5kW LiFePo4 batteries. Have also 2kW wind turbine for the fun of it. Almost everything is around 50% off compared to shop prices around here and one of the main objectives is trying to keep costs down.

Maybe a set like this is nothing new to the forum, but I doubt no one has installed panels this way...

• shadowmaker
• Replies: 628
• Forum: Residential Solar

• 

 

[GotBoom!]

The reason I pointed towards Agrivoltage is that the land between the panel rows is more easily maintained by tractors without tilting the panels vertically for harvesting/maintenance. Tilting arrays are much more expensive to install than static vertical arrays. Food for thought - get it.