camelot-forum.co.uk

https://www.pv-magazine.com/2022/02/23/ ... lications/

"The PowerFoil 1300HE that HyET has developed for residential applications has a rated power of 152W/m. It has a width of 1,300mm and a thickness of 0.4mm. Its length can reach up to 15,000mm, depending on the project type and size, and its weight is 0.6kg/m2"

Potentially good for low level solar on the "new modern" warehouses going up these days. (imagining a vertical exposure along a sunny side of wall above landscaping levels for background energy supply)

I wonder how this transfers onto & improves the lifespan of pressed metal roofing panels?

I wonder how it copes with shading. In the picture on the weblink it shows the foil on corrugated roof tiles where effectively half of the module is shaded.

I don't think it will have any effect of the lifespan of box profile roof and wall sheeting. They typically degrade from the edge of the sheet where the plastic coat separates from the steel and allows moisture in to start corrosion. My steel framed and clad out building s have been up for 15 years and there is only minor degradation along the panel edges and they are exposed to salt laded winds straight off the English Channel.

I would be concerned at how they are fixed - adhesive?? - and how that stands the test of time. It only wants one little corner to start to lift and the wind (such as the ones we have had recently) will peel the lot off. It is a very harsh environment for the adhesive - expansion/movement and constant large temperature cycling. Also as they are stuck to the roof there is a lot less cooling than conventional modules, hence the reduction in power output with temperature will be worse than with conventional panels with an airgap.

Having said all that if they are cheap enough they could be good. Still think the adhesive will be an issue, will need a clean smooth surface. Most cladding in this country is the box profile type and has joints between the sheets. The PV will have to also fit between the fixings to what is essentially a "smooth" surface.

marshman wrote: ↑Thu Feb 24, 2022 9:40 am I wonder how it copes with shading. In the picture on the weblink it shows the foil on corrugated roof tiles where effectively half of the module is shaded.

Ditto, seemed a bit dumb, but as an example of application for "presumably" a round of investment hoovering this sort of thing is commonplace under the term "mock up illustration"