[RE-wrenches] AET Rayport array #1

Solarguy ntrei at 1scom.net
Thu Aug 23 09:21:57 PDT 2012


Wrenches

We’re preparing a design for a 2nd story flat commercial office building
roof using AET 15° stainless frames with ballast. The 1920s vintage building
is on the National Register of Historical Places so fortunately the  array
will be hidden behind a 3 ft parapet. No real problem there but a large
amount of hvac equipment is squeezed into the center of the roof to keep it
invisible from the street per those same historical mandates. This allows us
a pretty large area on 3 sides of the perimeter for the array. The array is
about 25 kW but it is confined to a large “C” shaped area just inside the
parapet. 

So having never installed this AET product I’m looking for recommendations
from Wrenches who have worked with this before.

AETs design, made from my scale dimensioned drawing tries to fill every open
space but I plan to delete a few modules and have basically one continuous
array  around 3 sides. There will be a couple of  access routes to the roofs
edge to keep city safety officials happy. 

Also the limited space in the electrical room will almost for sure require
us to use either micro inverters or several 5-7 kW string inverters on the
roof, not my favorite strategy. Some potential shading by the south wall
parapet may incline me to use both micros and string inverters. 

Advice please

Thanks as always
.

 

Jim Duncan

North Texas Renewable Energy Inc

www.ntrei.com <http://www.ntrei.com/>  

NABCEP PV 031310-57

TECL-27398

ntrei at 1scom.net 

817.917.0527

 

 

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