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12-16-2014, 01:18 PM
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#161
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Senior Member
Join Date: Jun 2010
Location: Central, Pennsylvania
Trailer: Escape#5 2022 E19
Posts: 26,268
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Call me lost but would it not make sense to tilt the first toward the morning sun, the middle horizontal towards high noon, and the third one opposite the first one, toward the afternoon sun in order to catch 180 degrees of light? If all 3 are at the same angle some direct rays are being missed, are they not?
__________________
Jim
Sometime life gets in the way of living.......
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12-16-2014, 01:27 PM
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#162
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Senior Member
Join Date: Sep 2010
Location: Kelowna, British Columbia
Trailer: 2008 Escape 17b
Posts: 1,868
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Quote:
Originally Posted by cpaharley2008
Call me lost but would it not make sense to tilt the first toward the morning sun, the middle horizontal towards high noon, and the third one opposite the first one, toward the afternoon sun in order to catch 180 degrees of light? If all 3 are at the same angle some direct rays are being missed, are they not?
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That's kind of what I was getting at but I suppose without a swivel, high noon would be the last best angle (for the mounting method described in this set up). I can only guess that at this latitude, at this time of year 3 panels facing the same direction will fill the battery bank sufficiently.
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12-16-2014, 02:35 PM
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#163
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Senior Member
Join Date: Apr 2014
Location: Arvada, Colorado
Trailer: 2015 E'21 - 'Velocity'. Tow: Toyota Tacoma V6, 4X4, manual.
Posts: 1,698
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Quote:
Originally Posted by cpaharley2008
Call me lost but would it not make sense to tilt the first toward the morning sun, the middle horizontal towards high noon, and the third one opposite the first one, toward the afternoon sun in order to catch 180 degrees of light? If all 3 are at the same angle some direct rays are being missed, are they not?
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It does sound logical - but - and its a big but - the early morning and late afternoon sun loose a lot of energy, leaving mid-day sun to be the big producer. Therefor, best to have all three panels pointed south at an optimum angle.
The next step, although rarely done even on the ground - much less a trailer, is to track both the angle and azimuth at the same time. You could do it manually with a ground mounted panel on a tripod but you would also miss out on all the fun that was supposed to come with camping.
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Alan
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12-16-2014, 03:00 PM
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#164
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Senior Member
Join Date: Sep 2014
Location: Ventura County, California
Trailer: 2015 Escape 17A
Posts: 2,348
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Quote:
Originally Posted by alanmalk
The next step, although rarely done even on the ground - much less a trailer, is to track both the angle and azimuth at the same time. You could do it manually with a ground mounted panel on a tripod but you would also miss out on all the fun that was supposed to come with camping.--
Alan
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maybe you could incorporate it into the camping fun.
Noon: aim the panels; have some food, take a nap; aim the panels. Repeat.
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12-16-2014, 03:57 PM
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#165
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Senior Member
Join Date: Mar 2013
Location: Yellow Springs, Ohio
Trailer: 2013 Escape 19
Posts: 709
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Suggestion for your next project: motor-driven equatorial mount.
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12-16-2014, 04:13 PM
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#166
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Senior Member
Join Date: Sep 2014
Location: Ventura County, California
Trailer: 2015 Escape 17A
Posts: 2,348
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Quote:
Originally Posted by Parker
Suggestion for your next project: motor-driven equatorial mount.
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Using this:
Starry Night Pro Version 7
you can track the sun during daylight,
then run your telescope at night.
How cool is that. The only thing it can't do is find fish.
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12-16-2014, 05:02 PM
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#167
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Senior Member
Join Date: Jan 2014
Location: North Van., British Columbia
Trailer: 2014 Escape 19, sold; 2019 Escape 21, Sept. 2019
Posts: 8,873
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Quote:
Originally Posted by alanmalk
I
The next step, although rarely done even on the ground - much less a trailer, is to track both the angle and azimuth at the same time.
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Alan
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You will see it sooner than you think. I'm in the process of fabricating a panel mount that adjusts both ways. I've always had that type of adjustment on my sailboat mounted panels. There is a gain but it's incremental. I'm doing it because I like optimizing the output but in truth, simply adding another panel would get me more.
Ron
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12-16-2014, 06:20 PM
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#168
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Senior Member
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 14,935
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Quote:
Originally Posted by cpaharley2008
Call me lost but would it not make sense to tilt the first toward the morning sun, the middle horizontal towards high noon, and the third one opposite the first one, toward the afternoon sun in order to catch 180 degrees of light? If all 3 are at the same angle some direct rays are being missed, are they not?
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This would make sense if it were important to have a steady flow of power through the day; however, batteries exist to fix the misalignment of power sources to power consumption, so I agree with Alan:
Quote:
Originally Posted by alanmalk
... the early morning and late afternoon sun loose a lot of energy, leaving mid-day sun to be the big producer. Therefor, best to have all three panels pointed south at an optimum angle.
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Quote:
Originally Posted by alanmalk
The next step, although rarely done even on the ground - much less a trailer, is to track both the angle and azimuth at the same time. You could do it manually with a ground mounted panel on a tripod but you would also miss out on all the fun that was supposed to come with camping.
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The elevation (tilt up/down) only needs to go through one cycle a year, so on an RV just setting it when setting up camp and leaving it for the duration makes sense.
The azimuth (pivot left/right) should actually be on an axis which is tilted to match the season (the equatorial mount that Parker mentioned), but whether the pivot axis is vertical or tilted, its cycle is once per day... I wouldn't try to do that manually, and I'm not suggesting a motorized mount for an RV rooftop, so aiming it due south seems sensible (to the extent that your mount can aim in azimuth). If you manually set azimuth for morning at breakfast, got busy doing something fun, and missed the rest of the day's manual adjustments, most of the day's potential energy gathering would be lost.
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12-16-2014, 06:55 PM
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#169
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Senior Member
Join Date: Aug 2012
Location: Portland, Oregon
Trailer: 2002 Escape 13'
Posts: 967
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I could probably get another 20% to 30% out of the panels by moving the position around constantly if I made that my goal but just tilting them upward and getting a very good average angle during the day has at least tripled the output I had from when they were mounted flat. Additionally, I probably wouldn't gain any benefit at all because my batteries are fully charged in a very short period of time and the MorningStar Solar Comtroller starts throttling back (PWD) the charge level significantly before noon.
However, remember that we are in Winter when tilting the panels upward provides the highest return. Spring and fall will also benefit the tilted angle needed then but they are going to stay down flat all summer where 6 degrees of angle is all that is called for. The days are long and the sun is almost directly overhead. This is also the period of time when I suspect that my new refer will draw the most power...perfect timing!
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12-16-2014, 10:24 PM
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#170
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Senior Member
Join Date: Apr 2014
Location: Arvada, Colorado
Trailer: 2015 E'21 - 'Velocity'. Tow: Toyota Tacoma V6, 4X4, manual.
Posts: 1,698
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Quote:
Originally Posted by Brian B-P
...If you manually set azimuth for morning at breakfast, got busy doing something fun, and missed the rest of the day's manual adjustments, most of the day's potential energy gathering would be lost.
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For those so inclined, check out this dual-axis solar tracking system.
Maine Solar Trackers, New Hampshire AllSun Solar Panel Tracking Systems
My wild guess is 2-4 thousand USD, just for the mount.
Personally, I'm going camping with an extra ground-level panel, to be used in the fall through spring, and just lean it up against a chair on the sunny side of my campsite.
Then I'm going fishing. That's a better way to recover lost energy...
--
Alan
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12-16-2014, 11:04 PM
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#171
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Senior Member
Join Date: Feb 2014
Location: Port Angeles, Washington
Trailer: 2014 19'
Posts: 534
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The solution! Mount it all on the tow vehicle like this picture. And don't forget the wind generator for those times the sun is blocked but there is a nice breeze
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12-17-2014, 11:44 AM
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#172
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Senior Member
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 14,935
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Quote:
Originally Posted by alanmalk
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I think it's amusing that GPS has become so cheap and reliable that it is used for a fixed installation like this - once the initial alignment is done, it serves as nothing more than a clock, because (of course) the location (position) of the array doesn't change.
An RV, in contrast, benefits from GPS when any kind of location-dependent automated aiming system is needed. Motorized satellite dish systems routinely use GPS to determine the orientation (in elevation) of the dish (and then find the satellite by pivoting in azimuth and then do fine tweaking by signal strength).
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12-17-2014, 12:48 PM
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#173
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Senior Member
Join Date: Jan 2014
Location: North Van., British Columbia
Trailer: 2014 Escape 19, sold; 2019 Escape 21, Sept. 2019
Posts: 8,873
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Quote:
Originally Posted by Brian B-P
An RV, in contrast, benefits from GPS when any kind of location-dependent automated aiming system is needed. Motorized satellite dish systems routinely use GPS to determine the orientation (in elevation) of the dish (and then find the satellite by pivoting in azimuth and then do fine tweaking by signal strength).
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And also for us lower tech folk who still use OTA signals and TVfool to aim the antenna
Ron
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12-22-2014, 10:10 AM
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#174
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Senior Member
Join Date: Aug 2012
Location: Portland, Oregon
Trailer: 2002 Escape 13'
Posts: 967
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I'm getting my 19' ready for camping for a 3 day trip to the beach at San Clemente, CA starting the day before Christmas and wanted to show you a side view of the 3 new adjustable solar panel mounts locked down for traveling.
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12-22-2014, 10:13 AM
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#175
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Senior Member
Join Date: Mar 2013
Location: Asheville, North Carolina
Trailer: 2014 Escape 19
Posts: 895
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You've done a great job with this project! I'm looking forward to seeing how the panels work for you on a "day to day" basis! Thanks for keeping us all informed of your progress. Hope that you and the family have a great holiday camping in your Escape.
__________________
Kevin
Thanks to the interstate highway system, it is now possible to travel across the country from coast to coast without seeing anything - Charles Kuralt
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12-22-2014, 10:13 AM
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#176
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Senior Member
Join Date: Jun 2010
Location: Central, Pennsylvania
Trailer: Escape#5 2022 E19
Posts: 26,268
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Boy some people will go to extremes to not have to wash/wax their roofs.....
__________________
Jim
Sometime life gets in the way of living.......
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12-22-2014, 11:16 AM
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#177
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Senior Member
Join Date: Aug 2012
Location: Portland, Oregon
Trailer: 2002 Escape 13'
Posts: 967
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Quote:
Originally Posted by cpaharley2008
Boy some people will go to extremes to not have to wash/wax their roofs.....
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...true! It is ironic that I now have to raise all the panels to get under them when I want to clean the roof properly
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12-22-2014, 03:29 PM
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#178
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Site Team
Join Date: Jun 2014
Location: Canyon Lake, Texas
Trailer: 2015 19 "Past Tents", 2021 F150 Lariat 2.7L EB
Posts: 10,222
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Quote:
Originally Posted by hotfishtacos
I'm getting my 19' ready for camping for a 3 day trip to the beach at San Clemente, CA starting the day before Christmas and wanted to show you a side view of the 3 new adjustable solar panel mounts locked down for traveling.
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Shouldn't the wings be mounted on the SIDES of the fuselage instead of on top? You might have issues getting that thing off the ground....
__________________
"You can't buy happiness, but you can buy an RV. And that is pretty close."
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12-22-2014, 03:37 PM
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#179
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Senior Member
Join Date: Jun 2010
Location: Central, Pennsylvania
Trailer: Escape#5 2022 E19
Posts: 26,268
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I wonder if the solars will impact the non white reflecting inability of the solar panels in dispersing the heat in the sun from inside??
__________________
Jim
Sometime life gets in the way of living.......
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12-22-2014, 04:09 PM
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#180
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Senior Member
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 14,935
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Solar panels do get warm; air circulation under them is good.
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