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Author Topic: Large solar festi rig - mostly not for taping  (Read 6343 times)

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Offline NOLAfishwater

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Re: Large solar festi rig - mostly not for taping
« Reply #15 on: June 11, 2012, 04:02:42 PM »
no problem. I work for a solar company so I figured I could help when I saw your post. Great idea btw. I am going to have to do something like this for my pop up camper.

Offline Gutbucket

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Re: Large solar festi rig - mostly not for taping
« Reply #16 on: June 11, 2012, 04:52:15 PM »
If anybody else is thinking about doing this. I highly recommend making an adjustable tilt rack for the panel to sit on. Every latitude has as different angle to set your panel to. If you click on this link and then select your state, then closest city, you can get a report of the ideal angle for your panels.

http://rredc.nrel.gov/solar/calculators/PVWATTS/version1/

so for Boulder its 40 degrees of tilt
and for further south around Alamosa, its 37.5 degrees of tilt

So when you travel with your festy solar system you can set it to the correct tilt.

Hey Louie, are those degrees of tilt calculated for permanent installs?  If so I'd image they may be a compromise between summer and winter declination, maybe favoring winter angles for more efficiency in those less solar energetic months?  If that's the case, then less tilt for a temp summer setup might be optimal, especially up North.  Yeah I know, splitting hairs and all that.  Just currious, you know better than I.
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Offline NOLAfishwater

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Re: Large solar festi rig - mostly not for taping
« Reply #17 on: June 11, 2012, 11:28:08 PM »
If anybody else is thinking about doing this. I highly recommend making an adjustable tilt rack for the panel to sit on. Every latitude has as different angle to set your panel to. If you click on this link and then select your state, then closest city, you can get a report of the ideal angle for your panels.

http://rredc.nrel.gov/solar/calculators/PVWATTS/version1/

so for Boulder its 40 degrees of tilt
and for further south around Alamosa, its 37.5 degrees of tilt

So when you travel with your festy solar system you can set it to the correct tilt.

Hey Louie, are those degrees of tilt calculated for permanent installs?  If so I'd image they may be a compromise between summer and winter declination, maybe favoring winter angles for more efficiency in those less solar energetic months?  If that's the case, then less tilt for a temp summer setup might be optimal, especially up North.  Yeah I know, splitting hairs and all that.  Just currious, you know better than I.

yep. for fixed installations so it is an average for the whole year. if you hit the calculate button based on your system it will tell you the output based on the month. once you know that you can try increasing or decreasing the tilt to show what the effect is on the the production for the month in question.

Offline NOLAfishwater

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Re: Large solar festi rig - mostly not for taping
« Reply #18 on: June 11, 2012, 11:30:17 PM »
the bottom line is anything is better than  it laying flat.

Offline capnhook

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Re: Large solar festi rig - mostly not for taping
« Reply #19 on: June 11, 2012, 11:41:21 PM »
the bottom line is anything is better than  it laying flat.

....or upside down.
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