Quote:
Originally Posted by InfiniteNow
In addition to just painting it black, you can get much higher temps with the same amount of sunlight by increasing the pressure inside the glass. Granted, this may very well be beyond what Turtle was thinking, or might require higher tech resources than he'd planned to use, but by pressurizing the tube itself you can get a LOT more bang for each solar buck.
I'm thinking of something similar to the evacuated tubes they use in many new solar hot water heater applications.
Beyond Oil Solar: Solar Evacuated Tubes |
kewl units!
what i was really going for with my original idea was the UV doing the work, but I suspect that a magnifying glass won't bend UV to the focus, and second, the lens may absorb 90% or more of the UV that does strike it.
oh well.
