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| Re: [GMCnet] An Experience of Using Solar on a 45' Yacht [message #232170 is a reply to message #232154] |
Tue, 03 December 2013 21:32   |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Mac,
Thanks, interesting note. I may have over-simplified or gotten the math wrong, but at a high level, my takeaway is that the rated panel watts times 4 or 5 hours is about what you can expect for output. I had sort of seen that number elsewhere, but nice to see the hard data that goes with it. There may be better sun on a sailboat than a GMC, since there aren't many trees in the ocean.
But, the good news is that if all that holds, my planned panels should be close to keeping up with my Norcold, so I ought to be a able to go several days without running the generator, depending on how much other stuff I run.
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: [GMCnet] An Experience of Using Solar on a 45' Yacht [message #232188 is a reply to message #232170] |
Wed, 04 December 2013 08:31 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Craig Lechowicz wrote on Tue, 03 December 2013 22:32 |
Mac,
Thanks, interesting note. I may have over-simplified or gotten the math wrong, but at a high level, my takeaway is that the rated panel watts times 4 or 5 hours is about what you can expect for output. I had sort of seen that number elsewhere, but nice to see the hard data that goes with it. There may be better sun on a sailboat than a GMC, since there aren't many trees in the ocean.
But, the good news is that if all that holds, my planned panels should be close to keeping up with my Norcold, so I ought to be a able to go several days without running the generator, depending on how much other stuff I run.
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Craig,
It isn't a sailboat. Solar on a sailboat is a WAFWOT (waste of time). Fortunately, this is a "traveler yacht" that has a large (really large) available unused deck space to place panels. Sailboats, even cruisers, have almost no unused deck space. Installations I have known (and did some install) have tried to use the cabin trunk and the outsides of the lifelines, but none could be, by any stretch, called a successful installation.
I call an environmental energy installation successful when it can supply 90% of the load. This is what it takes to get by with no fuel burning at all. Even installations as good as 75% will still require some other means to bring the banks back to density.
Yes, I have done wind too, and even thought these are sailors, there just isn't the resource everywhere to make that work.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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