This is a large Fresnel Lens focused on a copper tube with a 12 V pump (powered by two 6 watt solar panels) with water circulating through the unit. Water, seven gallons, was raised from 63 F to 106 F in one hour. It is not super efficient as heat is lost at the open top of the glass tank. This is designed to illustrate one method of solar heating a swilling pool with a Large Fresnel Lens.
TESTING HDD AQUA BLOCK.
Duration : 0:8:21
February 6th, 2010 at 2:22 am
3:30 OMG I SEE A …
3:30 OMG I SEE A lizard/gecko on the leafy plant in the background lol
and nice blooper
February 6th, 2010 at 2:22 am
Hi Dan, what if you …
Hi Dan, what if you were to have a black basestation at the bottom of the pool that could retain the heat of the light beaming through the water? or even if you were to tile or paint the bottom of the pool black? do you think this could work for heating without a tubing system by focusing the lens directly into the pool?
February 6th, 2010 at 2:22 am
@PsycoDirector
Hi …
@PsycoDirector
Hi,
You would concentrate it to a smaller area. The power would not increase on heat a smaller area hotter.
February 6th, 2010 at 2:22 am
what would happen …
what would happen if you were to send the ray through a second glass? would it dolute it or strenghten it?
February 6th, 2010 at 2:22 am
It would be …
It would be something you would construct on your own. Say build a wood framing of a very small scale-maybe 3 feet in diameter and 2-3 feet in height, and then place a lens in each panel that aims the light source at your radiator,
This ensures any light beams directly where you need it and there’s no adjusting. With the costs of the lens, some plexi to seal up the “igloo” panels before attaching the lenses, probably run a couple hundred dollars but wood be very efficient.
February 6th, 2010 at 2:22 am
Sounds like one of …
Sounds like one of these would work great in a bath tub in a motor home.
February 6th, 2010 at 2:22 am
ah , where can i …
ah , where can i find out more?
February 6th, 2010 at 2:22 am
You know with a …
You know with a half globe lens set up and sealed to ground, ground insulation and a large radiator in the center of it, you could heat an exponential amount of water even during the winter.
February 6th, 2010 at 2:22 am
LoL at the blooper! …
LoL at the blooper! I’ve done that with a gallon of milk before.
February 6th, 2010 at 2:22 am
What is the name of …
What is the name of the copper part you are using?
February 6th, 2010 at 2:22 am
Do you need a pump? …
Do you need a pump? Isn’t there a way to make the heat pump the water?
February 6th, 2010 at 2:22 am
If you put a little …
If you put a little Styrofoam under the plastic, maybe it could float halfway up to get more of the sun at a shallow angle.
February 6th, 2010 at 2:22 am
Black plastic is a …
Black plastic is a great idea. Winter is tough because the sun is lower, most pools do not get bottom direct sun. Cheap yardsale mirrors and plastic drop cloth with some weights. $30 pool heater:-)
February 6th, 2010 at 2:22 am
fbueno123, are you …
fbueno123, are you thinking of thermal cycling? I agree. The temperature difference would make the cold fall, but the path up would have to be pretty vertical and clear for good motion. And have mercy if he simply roughed up the copper and put a light captivating coating on it. He’s losing a GREAT percentage of energy through reflection. informative presentation, thank you.
February 6th, 2010 at 2:22 am
Yes, his black hose …
Yes, his black hose heater uses that same idea. Just have a long black hose (coiled) in the sun and it will heat water.
February 6th, 2010 at 2:22 am
106F – 63F = 43F …
106F – 63F = 43F degrees = 23C degrees
7 gals of water = 26 liters = 26 Kg (approx)
Specific heat of water = 4.2Kj/Kg*C
1 hour = 3600 seconds
Total energy = 2511 Kj in 3600 seconds
power = 697 watts.
I think it would take a while to heat a pool. The black hose probably puts out more power because it has more area. You can also just put black plastic in the pool.
February 6th, 2010 at 2:22 am
Some are, some are …
Some are, some are from 90’s stage production special effects systems, Newer tv’s have weak lenses for solar.
February 6th, 2010 at 2:22 am
oh oki, I had no …
But is that thing also from tv? (glass stuff)
oh oki, I had no ideas, but thanks
February 6th, 2010 at 2:22 am
did you see the …
did you see the mouse in the leaf at 3:23
February 6th, 2010 at 2:22 am
lol this dude …
lol this dude someday will accidently set his house on fire.
February 6th, 2010 at 2:22 am
I think, if you put …
I think, if you put the watter higher , you will not need the pump
February 6th, 2010 at 2:22 am
nescisary necisary …
nescisary necisary nessseccary
February 6th, 2010 at 2:22 am
What camera do you …
What camera do you use for the slow motion stuff?
February 6th, 2010 at 2:22 am
Now if you took …
Now if you took that design you have going with the copper tubes, added a lot more curves and length of tubing, painted it black and simply placed it in the sun on its own without a fresnel lens, would you be able to achieve the same effect on a smaller scale?
February 6th, 2010 at 2:22 am
Spot the lizard at …
Spot the lizard at 3:33 !