William, are you thinking of the Wattsun Solar Tracking spreadsheet? They have a link to it on their "Reference" page: http://www.wattsun.com/reference.html
Joel, I personally like to use Google Sketch Up for this application. There is a minor learning curve associated with it (including locating your array to the proper location using Google Earth) but I have been very pleased with the results. It isn't a simple calculator but it is a powerful and free tool. Also, there was a good write up on the subject in the first SolarPro, it may get you what you need. Ryan From: [email protected] [mailto:[email protected]] On Behalf Of William Miller Sent: Monday, May 11, 2009 6:40 PM To: RE-wrenches Subject: Re: [RE-wrenches] Spacing between solar arrays Joel: We have a spreadsheet on our web site that calculates inter-row spacing for south facing rows on flat or angled surfaces: http://millersolar.com/resources/resources.html You have added a new twist that has us momentarily stumped -- non-south facing rows. I am working on a solution and I will add it to the spreadsheet as soon as I figure it out. There is a manufacturer that had a super excel spreadsheet to calculate inter-row shading, complete with nifty graphics, but I forget now where-in-the-web it is. Anyone else remember this one? William Miller PS: I have had a lot of comments from around the world of those using our design tools and even a few that added some ideas. Our thanks to all who have helped and commented. Wm At 09:39 AM 5/11/2009, you wrote: Wrenches, Someone posted a website or calculation for determining the spacing between solar arrays, but I can not find it. It is easy to get the spacing from a drawing when the array faces true south, but when the array faces southeast or southwest is what we need to know. Please help. Thank you very much. Joel Davidson _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org <http://www.members.re-wrenches.org/> Please note new e-mail address and domain: William Miller Miller Solar Voice :805-438-5600 Fax: 805-438-4607 email: [email protected] http://millersolar.com <http://millersolar.com/> License No. C-10-773985 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.325 / Virus Database: 270.12.24/2107 - Release Date: 05/11/09 16:14:00
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