Cai Lili, Song Alex Y, Wu Peilin, Hsu Po-Chun, Peng Yucan, Chen Jun, Liu Chong, Catrysse Peter B, Liu Yayuan, Yang Ankun, Zhou Chenxing, Zhou Chenyu, Fan Shanhui, Cui Yi
Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
E.L. Ginzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, CA, 94305, USA.
Nat Commun. 2017 Sep 19;8(1):496. doi: 10.1038/s41467-017-00614-4.
Space heating accounts for the largest energy end-use of buildings that imposes significant burden on the society. The energy wasted for heating the empty space of the entire building can be saved by passively heating the immediate environment around the human body. Here, we demonstrate a nanophotonic structure textile with tailored infrared (IR) property for passive personal heating using nanoporous metallized polyethylene. By constructing an IR-reflective layer on an IR-transparent layer with embedded nanopores, the nanoporous metallized polyethylene textile achieves a minimal IR emissivity (10.1%) on the outer surface that effectively suppresses heat radiation loss without sacrificing wearing comfort. This enables 7.1 °C decrease of the set-point compared to normal textile, greatly outperforming other radiative heating textiles by more than 3 °C. This large set-point expansion can save more than 35% of building heating energy in a cost-effective way, and ultimately contribute to the relief of global energy and climate issues.Energy wasted for heating the empty space of the entire building can be saved by passively heating the immediate environment around the human body. Here, the authors show a nanophotonic structure textile with tailored infrared property for passive personal heating using nanoporous metallized polyethylene.
空间供暖是建筑中最大的能源终端用途，给社会带来了巨大负担。通过被动加热人体周围的直接环境，可以节省用于加热整个建筑空置空间所浪费的能源。在此，我们展示了一种具有定制红外（IR）特性的纳米光子结构纺织品，它使用纳米多孔金属化聚乙烯实现被动个人供暖。通过在带有嵌入式纳米孔的红外透明层上构建红外反射层，纳米多孔金属化聚乙烯纺织品在外表面实现了最低的红外发射率（10.1%），在不牺牲穿着舒适度的情况下有效抑制了热辐射损失。与普通纺织品相比，这使得设定温度降低了7.1°C，比其他辐射供暖纺织品高出3°C以上，表现优异。这种大幅的设定温度扩展能够以经济高效的方式节省超过35%的建筑供暖能源，并最终有助于缓解全球能源和气候问题。通过被动加热人体周围的直接环境，可以节省用于加热整个建筑空置空间所浪费的能源。在此，作者展示了一种具有定制红外特性的纳米光子结构纺织品，它使用纳米多孔金属化聚乙烯实现被动个人供暖。
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