Chart for impact of space between panels and roof [RE-wrenches]

Steve Johnson stevejohnson at comcast.net
Sun May 18 20:13:24 PDT 2008


Thanks, Michael.  this helps  - I'll try Bill's chart too.
Steve

Michael Welch wrote:
> 
> Hi Steve. Home Power just published an article that includes similar 
> info.
> 
> For string sizing purposes, these correction temperatures are intended 
> to be added to the highest average ambient temperature at the array's 
> location.
> • Parallel to roof (<6 in. standoff): +35°C
> • Rack-type mount (>6 in. standoff): +30°C
> • Top-of-pole mount: +25°C
> 
> The article also goes into detail about what temperature figures mean 
> for array voltage and power.
> 
> Steve Johnson wrote at 12:17 PM 5/16/2008:
>  
> >Yes I'm aware of that but I'm referring to a study with a chart that 
> >shows performance dergradation relative to distance from roof.  Like at 
> >1", 2", 3" 4", 5",6". 
> >
> >Since I already know what to do why do I need this? One word.
> >"Customer"
> >
> >This is a highly monitored job with temperature sensors etc.
> 



Steve Johnson
LightWave Solar Electric
Nashville, Tennessee


- - - -
Hosted by Home Power magazine

To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at re-wrenches.org

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------




More information about the RE-wrenches mailing list