[RE-wrenches] Bifacial modules
Jeff Clearwater
jeffc at villagepower.com
Wed Nov 2 12:14:13 PDT 2011
Hi Keith,
You may be able to accomplish what you are seeking with the Lumos' LSX
series frameless modules with the clear backing:
http://www.lumossolar.com/products/LSX
They let through quite a bit of light.
Best,
Jeff
Keith Cronin wrote:
> Bill
>
> Appreciate the feedback. One of the questions that I'm seeking to
> determine- how much light will filter through the spaces between the
> cells to the surface below?
>
> Lets say for someone that wants to grow orchids- they need low light,
> as an example.
>
> Wondering how much light is diffused through the panels to be able to
> do things like grow orchids and or have filtered light to work?
>
> As an example: Do any of you have irradiance measurements on any
> carports that have done bifacials and determined how many watts sq m
> are below?
>
> Keith
> ------------------------------------------------------------------------
> *From:* Bill Brooks <billbrooks7 at yahoo.com>
> *To:* 'Keith Cronin' <electrichi01 at yahoo.com>; 'RE-wrenches'
> <re-wrenches at lists.re-wrenches.org>
> *Sent:* Tuesday, November 1, 2011 11:44 AM
> *Subject:* RE: [RE-wrenches] Bifacial modules
>
> Keith,
> This is easy to test. Simple take an irradiance sensor, turn it
> upside-down and test the irradiance on the bottom surface of any PV
> array. It will vary greatly based on exposure to reflected light and
> so on, but it will rarely be above 100 W/m^2. 10% improvement is an
> absolute maximum for any bifacial technology, and that is on the high
> side. Any claims above 10% are ignoring the physics of sunlight,
> reflectance of typical materials, and PV.
> Nothing wrong with bi-facials. They are beautiful to look at. I would
> buy them based on aesthetics, not on performance.
> Bill.
> *From:*re-wrenches-bounces at lists.re-wrenches.org
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of
> *Keith Cronin
> *Sent:* Tuesday, November 01, 2011 1:04 PM
> *To:* RE-Wrenches
> *Subject:* [RE-wrenches] Bifacial modules
> Hi
> Was wondering if any of you have installed bifacial modules and know
> what the % of light that comes through to a surface below the modules?
> Looking for a canopy type of installation/ application and wondered if
> you have any #'s?
> Thank you~
> Aloha,
> Keith
>
>
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