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Old 03-09-2010, 10:56 AM   #1 (permalink)
Xringer
Old Retired R&D Dude
 
Join Date: May 2008
Location: Woburn Mass USA
Posts: 702

Little Red - '12 Toyota Prius c 2 Two
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"Whitey" Bulger - '14 Toyota RAV4 LE
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Wind-Loading question for the Pros

I'm working on a DIY solar project Solar Tracker Project - EcoRenovator
and, I want to install 4 PV solar panels on a post mount, in a square configuration.

Each panel is approximately 4'x3' and will present a pretty good wind-load.
The 8'x6' square of panels will be mounted at the top of a 6' post.
And will be angled up towards the south at about 42 degrees.

In the event of a strong wind from the north, it seems like panels will be
getting some 'lift', acting as a wing.

So, here's my question:
If I didn't let the panels touch each other, but inserted an open space of 8" between them,
(a '+' gap) for air to pass between them, would the wind-loading be More, or Less??

Wind spec: Up to 50 mph gusts.


~~
Logically, it seems to me that the 8" spacing would make things worse.
Because all the extra edges are exposed and adding drag..
But, something is telling me that air passing through the '+' gaps
will be like air on a screen door.. Less loading.?.

What Say Ye??


Thanks,

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Cheers,
Rich

Current ride: 2014 RAV4 LE AWD (24 MPG)

Wife's Pizza Transporter
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