In light of Hurricane Matthew and the loss of some of our PV systems on South
Coast of Haiti (despite being designed for 120 - 150mph winds), I’d be
interested to hear of any strategies being used for making hurricane-resistant
solar arrays. The maximum wind speed that most commercially available racking
systems seem to provide is 130 – 150mph, but in many cases it seems the racking
survives okay anyway while the glass is blown right out of the module frames.
Are there any modules rated for higher than 2400 Pascals of wind loading (which
seems to be the norm)? I recall seeing a Mitsubishi module a few years back
that had an additional frame member running across the back of the module.
Would that provide extra wind load protection?
Would using small solar modules with less surface area be a useful strategy?
(We typically use standard 60-cell modules.)
Can some sort of wind break or shield be designed into the frame to take the
wind load off the solar modules themselves? (Many of our systems are on
tilt-frames on flat concrete roofs so that back of the array is exposed.)
Any thoughts/advice/experience in this area would be much appreciated. Thanks.
Darren Anderson | Project Manager
Solar Electric Light Fund | www.SELF.org<http://www.SELF.org/>
head office: +1-202-234-7265
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