Quote:
|
Originally Posted by GAHD
Have you thought of how to adjust the tube based on what angle the sun's coming from? From what I see, it looks like it's prime focus will only come into effect while the sun is directly overhead.
|
In reading on the large electric generating plants using these troughs, some automatically track the Sun on 2 axes, some 1 axis, & some are fixed. I plan to tip my reflector up with the tube at right angles to the Sun & periodically move it for maximum efficiency. Photos of that to come, as well as the temp readings.
I also read a lengthy dissertaion on different reflective materials, including mylar, aluminium foil, sheet metal, & more exotic films. Seems the biggest problem is degradation over the long run from UV light & weather. Foil came out on top I gathered, once you have the correct adhesive & master the 'no-wrinkles' technique.
Not one source have I found that gives any ratings about temperature vs. size.
