Post by satamax on Jan 21, 2015 4:00:49 GMT -8
Hi everybody!
Well, i have tried this question on two forums already.
Has anybody ever seen a Fresnel lens Thrombe wall?
To me, this could have few advantages. Higher temp of the colimated light beam, so there's a better transmission to the mass, i think. The difference of temperature being higher. Also the ability of heating at higher temps than if the mass was at near or equivalent to the temperature of the sun's rays behind the glass. May be 60C° behind the glass, compared to several hundreds behind a Fresnel lens at the focal point.
Also, since the beam is colimated i may be could do a staggered or overlaping double layer. With the layers which could be spaced may be 60cm, and the frenel lenses have different magnification factor. The first layer 's beams passing through the gaps of the second one. And the second layer would get some direct light from the gaps of the first one, but also the lost light rays which will have passed through the first layer.
I also could extend a bit on the sides and above the wall, since the rays are concentrated; so i could have a larger collector size. May be leaning the collector array could increase the surface too.
Whatch daya think Gals and boys?
Well, i have tried this question on two forums already.
Has anybody ever seen a Fresnel lens Thrombe wall?
To me, this could have few advantages. Higher temp of the colimated light beam, so there's a better transmission to the mass, i think. The difference of temperature being higher. Also the ability of heating at higher temps than if the mass was at near or equivalent to the temperature of the sun's rays behind the glass. May be 60C° behind the glass, compared to several hundreds behind a Fresnel lens at the focal point.
Also, since the beam is colimated i may be could do a staggered or overlaping double layer. With the layers which could be spaced may be 60cm, and the frenel lenses have different magnification factor. The first layer 's beams passing through the gaps of the second one. And the second layer would get some direct light from the gaps of the first one, but also the lost light rays which will have passed through the first layer.
I also could extend a bit on the sides and above the wall, since the rays are concentrated; so i could have a larger collector size. May be leaning the collector array could increase the surface too.
Whatch daya think Gals and boys?
