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- W4312933647 abstract "Climate changes and its many associated impacts are one of the most critical global challenges. Photovoltaics has been instrumental in mitigation of CO2 through the generation of electricity. However, the goal of limiting global warming to <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>${1.5^{circ}mathrm{C}}$</tex> increasingly requires additional approaches. The paper presents how PV surfaces can be designed to reverse the Earth’ radiative imbalance from increased greenhouse gasses that lead to higher global temperatures. The new PV surface generate electricity, reflect sub-band gap radiation, minimize their temperature, generate thermal radiation and emit additional IR through the atmospheric, with these processes totaling <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>${650 mathrm{W}/mathrm{m}^{2}}$</tex> . This is realized by: (1) PV system efficiency at operating temperature> 20% and sub-band gap reflection of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>${150 mathrm{W}/mathrm{m}^{2}}$</tex> for a total of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>${350 mathrm{W}/mathrm{m}^{2};}$</tex> (2) Thermally emitted radiation (radiative cooling) of 150 <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>${mathrm{W}/mathrm{m}^{2};}$</tex> and (3) Active IR emission through an atmospheric window at 1.5 mm of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>${150 mathrm{W}/mathrm{m}^{2}}$</tex> . With such PV surfaces, we show that 10 TW of installed PV can reverse global warming. Using PV to balance global temperatures introduces additional considerations for PV, focusing on high efficiency, particularly high efficiency at operating temperatures, radiative cooling, and new processes for 1.5 mm emission. We find that depending on their design, PV panels can increase or decrease global temperatures." @default.
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- W4312933647 date "2022-06-05" @default.
- W4312933647 modified "2023-09-30" @default.
- W4312933647 title "Photovoltaic Surfaces to Reverse Global Warming" @default.
- W4312933647 doi "https://doi.org/10.1109/pvsc48317.2022.9938772" @default.
- W4312933647 hasPublicationYear "2022" @default.
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