greenpowerscience.com Welding / brazing with a Fresnel Lens does not work very well for larger masses of steel. The steel cores are excellent heat storage cells for later usage or instantaneously boiling water for high powered steam pulses.
greenpowerscience.com Welding / brazing with a Fresnel Lens does not work very well for larger masses of steel. The steel cores are excellent heat storage cells for later usage or instantaneously boiling water for high powered steam pulses.
Excellent video, Again!! I do have some questions on practical application.
Welding is fine but I see an energy source in the steam created by the blocks of heated steel in water, could an old air tank be modified to create and hold the steam then drive a steam engine? Also referring to some of your earlier videos on solar, which panels or sheets are most efficient? I am considering off grid power production and you always come up with the most inspiring applications. Thanks Dan!!
neat
I like the idea of storing the heat and making it mobile. Now you can cook under the shade of a nice tree rather than in the sun under the lens.
Nice, someone must have asked this as a question, and its good you took the time to answer it. I’m surprised you didn’t include a slo-mo video of the water boiling ;)
It is the amount of BTU that determines whether or not two pieces of metal can be welded.  One candle equals one BTU. The maximum temperature of a candle is 1,400 °C it is just above the very dull blue part to one side of the flame. If you light 1000 candles you will have 1000 BTU but the temperature will remain at a maximum of 1,400 °C. So the physical dimensions of a Fresnel Lens determines both the maximum BTU and temperature.
Two people didn’t like the water molecules being injured by the hot steel.
put solder between the 2 blocks heat them up and see if it solders it self together
Here I am thinking… Couldn’t one use a large fresnel lens to heat a piece of metal, that through heat pipes woud deliver that heat to a metal block, inside a hot water tank, for use with, for example, central heat in a house?
Heat pipes are commonly used on CPU coolers to lead the excess heat away from the CPU, and into a cooler of sorts, in this case, the cooler would be the water in the tank.
I don’t know how efficient the setup would be, but considering 850 W/m² insolation, maybe worth it?
I got mine from an old projection tv
check our website, link in the middle.
If you had a few lenses mounted on a water filled tank (electronically tracking the sun), you could make a steam engine to generates electricity that could be tied into a solar system along with panels, windmills etc.?
wow i need one of these for camping
You may have answerd this but I looked and didn’t see it. Where can I get a lens like that?
So I have a question Dan, I’m a hobby blacksmith and most of the things I make are with 1/4″ thick mild steel. Because the steel is thinner than the example you showed, I’m not sure what to expect. Do you think it would be capable of getting a spot to an orange hot?
Cap off the jar, tap off the steam —>
Interesting heat storage solution!
May be it would be possible to use some kind of lens + optical fibers to channel that light to one spot. Like laser welding.
Hmm, I wonder how useful that might be in a steam engine.
Such a cool idea, PSO! Yeah, people don’t realize the import of cement. (Aluminum, too, btw, accounting for 1% of use of electricity.) The answer to the cement problem is lime and hemp hurd [not fibers!] to produce a petrifying mix stronger and lighter than concrete, but concrete will always have its uses. These fresnel lenses could heat the kiln but i’d like to know, as well: will preheating the shale make it easier to pulverize?
good stuff as always.
haha Dan the Man is at it again! I just love your little inventions and discoveries. Keep at it and maybe someone or even yourself could connect the dots between all what you’ve done and make some real difference in this strange world, whatever that might be. 🙂
Excellent.
now when i need water to boil fast i can do this shaweet
Anyone else envision Dan hiding behind a wall with a black cape and mask filming while listening to the theme music? =)
Excellent advice, I will have to try that out. However, I am still wondering how you film your videos of the fresnel lens in action. I would like to be able to document what is taking place when the material is being heated. What filters do you recommend I use on the camera (I currently have a spare shade 5 welding shade)? Thank you so much for your assistance so far, and keep up the great work.
Jason