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12-12-2017, 07:37 AM
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#1
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Senior Member
Trailer: 1990 Scamp 16 ft
Posts: 654
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OK. Is this charging idea experiment crazy?
I am sitting drinking my morning tea whilst shaking off the night time cobwebs and I have this crazy thought. Can you use a solar panel and a campfire to make electricity? Campfires sure give off a lot of radiation, though mostly at the infared end of the spectrum. Are solar panels able to convert this long wave radiation into the goodly juice that we crave?
I don't have a portable panel and laying my Scamp on its side to facilitate a good angle to a campfire might be problematic so I have a request. If anyone has a portable panel and a blazing campfire would you try an experiment? Try exposing your panel to a campfire's radiation (at a safe distance please) and see if any charging results. At least one enquiring (and perhaps silly) mind wants to know.
I suppose there are turgid scientific reports showing graphs and tables of solar cell response to various wavelengths of light where I could find the answer, but what fun would that be?
John, always pushing the frontiers of science and camping forward.
Pic of the DW walking a Pacific Northwest Beach on a bad day for solar energy.
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12-12-2017, 07:47 AM
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#2
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Senior Member
Name: Alexander
Trailer: 1979 Boler B1300
New Hampshire
Posts: 1,140
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The current crop of PV panels don't convert infrared(heat) to electricity but they are working on it:
https://www.engadget.com/2015/07/28/...nfrared-light/
I suppose there could be some electricity produced by a campfire since visible light is produced.
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12-12-2017, 08:19 AM
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#3
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Senior Member
Trailer: 1990 Scamp 16 ft
Posts: 654
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Alex you are amazing. This board is full of folks with all kinds of info at their fingertips.
But, what frustration! I was hoping for dozens of intrepid experimenters testing under various conditions like varying altitude, time of night, size of fire, type of firewood, KOA vs. Boondocking, annual rainfall, clarity of air, blood alcohol concentration, etc. I wonder if your reference is " FAKE" news and folks should verify this on their own. After all, what could the University of California know?
I challenge all solar fans to kindle their campfires and validate/disprove the UC's claim.
John
__________________
John Michael Linck - Toymaker
Camping since 1960 - Scamp 13' Oak
Subaru Outback 4 cyl cvt
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12-12-2017, 08:29 AM
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#4
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Senior Member
Name: Alexander
Trailer: 1979 Boler B1300
New Hampshire
Posts: 1,140
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I have to admit, I am curious to try it anyway. if it weren't for the fact that all my stuff is now in storage for the winter I would give it a try. Oh well, maybe this spring.
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12-12-2017, 08:37 AM
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#5
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member
Name: J
Isle of Wight
Posts: 536
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Think of the sun as a big campfire and you will know it will work....
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12-12-2017, 09:15 AM
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#6
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Senior Member
Trailer: 1990 Scamp 16 ft
Posts: 654
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Quote:
Originally Posted by widgetwizard
Think of the sun as a big campfire and you will know it will work....
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Speaking of big campfires. Back last century in boy scouts we passed down a saying.
"Indian builds small fire and keeps warm by leaning close. White man builds big fire and keeps warm chopping wood."
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12-12-2017, 11:11 AM
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#7
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Senior Member
Name: Tom
Trailer: Sprinter 'til I buy
Denver, CO
Posts: 944
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Try boiling water on the campfire. Then run a steam turbine. Ha!
If you web Search Miniature Steam Turbine Generator, they do exist.
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12-12-2017, 12:18 PM
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#8
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Senior Member
Name: Jim
Trailer: 2015 Casita 17SD
Florida
Posts: 176
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I think you'd have to have a really, really big fire to get enough photons excited enough to mate and produce electrons.
__________________
"...I keep blowin' down the road."
2015 Casita 17' Spirit Deluxe
2002 Toyota Tundra V8
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12-12-2017, 12:19 PM
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#9
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Senior Member
Name: Michael
Trailer: Trillium 4500
Colorado
Posts: 112
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Interesting idea! While photo panels can produce electricity from a wider range of light than the eye will detect, I don’t think it includes the infrared. The firelight in the visible range ought to give you some charge however. I have a panel I can move around so will try it for fun next camping season!
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12-12-2017, 12:21 PM
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#10
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Senior Member
Name: Dave W
Trailer: Trillium 4500 - 1976, 1978, 1979, 1300 - 1977, and a 1973
Alberta
Posts: 6,926
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12-12-2017, 12:45 PM
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#11
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Senior Member
Name: Jon
Trailer: Escape 21C
New York
Posts: 2,387
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I learned just how much energy there is in sunlight when I designed lights for a production inside a church. We thought it would be a great idea to "light up" the stained glass window as part of the show.
I hung 6 1000 watt PARs (a narrow beam, fairly efficient light source) in a tree about 20' from the window. That night at a tech rehearsal, when the time came we lit up the PARs expecting a brightly glowing window. Nope, just a dull glimmer in the middle.
Sunlight is pretty powerful stuff, compared to a campfire or 6000 watts worth of lights!
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12-12-2017, 03:45 PM
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#12
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Senior Member
Name: David
Trailer: Airstream International CCD 28
Florida
Posts: 211
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If you have $3000 to spare Look at the Efoy hydrogen generator.
__________________
2007 Airstream International CCD 28
2016 Dodge Ram Sport 5.7 Hemi 4WD
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12-12-2017, 07:02 PM
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#13
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Member
Name: Neto
Trailer: Scamp
Virginia
Posts: 81
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At Christmas time they sell a carousel that is powered by a candle. The rising heat turns a fanblade at the top and you get rotation. Just build a really big one out of steel and connect an alternator to it and build a reLly big fire. Be sure to have a second vehicle to haul the contraption.
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12-14-2017, 12:28 AM
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#14
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Senior Member
Name: Elliott
Trailer: Bigfoot
Everywhere
Posts: 462
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I'm pretty curious about how much power that would produce as well. Not much, obviously, but maybe not zero. My panels are permanently mounted on the roof, though, so I'll have to figure out either how to suspend a fire above the trailer or roll the trailer on its side to test. Hrm..
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12-14-2017, 04:55 AM
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#15
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Senior Member
Trailer: Casita Patriot
Posts: 329
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I’ve wondered about a full moon. It’s the same light, right?
p@
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02-15-2018, 01:57 AM
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#16
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Member
Name: G
Trailer: Damon
Alberta
Posts: 43
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using campfire to charge batteries
Maybe not as crazy as you thought; somewhere recently, probably around Christmas in one of those oddball seasonal catalogs, there was an ad for either a portable camping stove or possibly a cook pot that not only cooked one's vittles but also had a USB port!! Looked up the possiblity and yes the device is avail on line and has so-so reviews! I'm going to revisit as using 4 or 5 hours of free campfire juice is appealing. How many cords to watch Corrie?? Wonder if this is some kind of Piezo quartz tech? Just a thought. G.
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02-15-2018, 05:37 AM
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#17
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Senior Member
Trailer: 1973 Compact Jr and 1980 Bigfoot 17 ft
Posts: 1,339
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Workhorsed,
You're talking about the Biolite 2 stove. It makes electricity while cooking.
https://www.bioliteenergy.com/products/campstove-2
__________________
1980 Bigfoot 17' & former owner of 1973 Compact Jr
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02-15-2018, 07:36 AM
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#18
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Senior Member
Name: Joe
Trailer: 2013 EggCamper & 2011 Silverado Reg Cab 4x4
Ohio
Posts: 496
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And I sure don't want to lead off topic, but I always wondered why we cant have little personal water turbines. You throw them in a creek or river and get enough power to keep the battery charged. If I had a campsite by a river, that would be awesome!
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02-15-2018, 11:37 AM
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#19
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Senior Member
Name: bob
Trailer: Was A-Liner now 13f Scamp
Missouri
Posts: 3,209
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joe I have often thought of doing this but I think you would have to live up high enough to damn up some water to get good movement but maybe not. when we were in the mountains in Italy someone had a hose running across the road running about 500ft this was their water supply!
here in mo. we have old grist mills built in this same premise but they had huge water wheels to give them torgue. then over in ark. they had huge springs they put up a damn and generated el. in the old days but then everyone had just a light bulb or 2 as fridges came in not enough amperage.
bob
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02-15-2018, 11:49 AM
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#20
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Senior Member
Name: Jon
Trailer: Escape 21C
New York
Posts: 2,387
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I remember seeing an article on a Russian kerosene lantern powered radio a few years back - a bunch of thermocouples over the lamp chimney...
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