Solar vacuum tube which film color of the best absorption of sunlight?At present, the color of the vacuum tube is black, sapphire blue, purple red, which color absorption is best?
Another is to see glass borosilicate glass. Borosilicate glass has good light transmittance. Also many hard. I suggest you buy a Thsolar Jetta series, or diamond series. Vacuum tube thermal wave cycle, with anti fouling, leak proof, explosion proof, anti freeze four advantages. Is the mainstream products in the future.
I do solar energy for 10 years. I give you the color absorption ratio is not much difference, the absorption ratio is the best of the most, the most is also the 93%
Solar manufacturers say they are purple tube, Antarctic tube, three tube, is actually a flicker of way, as long as the vacuum tube structure, absorption ratio are similar. The key is to look at the vacuum tube, the vacuum degree is higher, the higher the insulation, longer life
