Thermal transport in solar-reflecting and infrared-transparent polyethylene aerogels

International Journal of Heat and Mass Transfer(2022)

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摘要
•Modeled solid and gas conduction and radiative transfer in polyethylene aerogel.•Experimental characterization of polyethylene aerogel thermal conductivity.•Studied the influence of density, gas type and pressure, and boundary emissivity.•Showed thermal transport dominated by gas conduction and radiative transfer.•Proposed pathways to reduce polyethylene aerogel thermal conductivity.
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关键词
Thermal conductivity,Polyethylene aerogels,Radiative transfer,Radiative cooling
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