8 ms·
what if there is water condensating on the panel ? what if the panel is not perfectly oriented towards the sun ? (dunno, just asking)
by frownie 12y ago
what if there is water condensating on the panel ? what if the panel is not perfectly oriented towards the sun ?
(dunno, just asking)
- icegreentea 12y agoDon't know what happens if there's condensation. As for orientation, here's the paper. http://www.nature.com/nature/journal/v515/n7528/full/nature13883.html http://www.nature.com/nature/journal/v515/n7528/full/nature1... You're looking for Extended Data Figure 1b). It shows relatively constant emissivitiy from 5 through 60 degrees of incident light. Speculating on water condensation. This would probably lower its efficiency. That said, they only claim cooling of ~40Wm^-2, corresponding to ~5 degrees below ambient. Realistically, this stuff is most useful when ambient is above ~20-25 degrees (this is when most people want cooling), where the drop in temperature by ~5 degrees shouldn't cause too much of a condensation problem. Of course, that's just one application.