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A sunshade could potentially be one climate engineering method for mitigating global warming through solar radiation management, because internationally negotiated reductions in carbon emissions may be insufficient to stem climate change. [5] [6] Sunshades could also be used to produce space solar power, acting as solar power satellites ...
Shade fabrics are measured by their shade factor, which is the measure of how much a shade fabric absorbs or reflects invisible light (ultraviolet radiation). This is listed as a percentage out of 100, with a 100% shade factor indicating complete light blockage.
An 18×14 mesh has become standard; 16×16 was formerly common and other common sizes are 18×18 and 20×20. For comparison, a typical screen in a clothes dryer has a nylon 23x23 mesh screen. Fiberglass solar screens provide over 75% of UV protection, by using thicker strands and a closer mesh than regular 18x14 fiberglass window screening ...
UPF (ultraviolet protection factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (sun protection factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%).
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Shade screens utilize acrylic canvas or a mesh fabric, which allows some view-through while blocking the sun's rays. The roller at the top may be hand-cranked or motorized. [ 5 ] The fabric is gravity-fed, with a weighted bottom rail pulling the fabric down between guide rails or guy wires .
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