Energy savings potential of reversible photothermal windows with near infrared-selective plasmonic nanofilms
Energy savings potential of reversible photothermal windows with near infrared-selective plasmonic nanofilms
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DOI：
10.1016/j.enconman.2022.115705
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发表时间：
2022-05-12
影响因子：
10.4
通讯作者：
Feng, Yanxiao
中科院分区：
文献类型：
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作者：
Jahid, Md Anwar;Wang, Julian;Feng, Yanxiao
在过去的几十年里，人们研究了各种具有可变太阳热增益控制功能的动态窗和玻璃系统，以响应季节性天气条件和室内空间供暖和制冷需求。然而，在现有的大多数动态玻璃和窗系统中，太阳热增益的调制必须影响太阳光的透过率。本文提出了一种新型的动态窗口概念：基于纳米尺度太阳红外诱导等离子体光热效应的可逆光热窗，它可以独立于可见光条件调制太阳热量。这项研究通过实验验证的分析模型，提供了太阳辐射下的基本技术特性和热特性和光学特性。可逆光热窗表现出很强的控制太阳热增益系数的能力，范围约为0.2至0.6，稳定的可见光透过率为0.32。整个建筑的能源模拟表明，与使用最新能源效率标准建立的基准模型相比，可逆光热窗在混合气候下提供的节能潜力可达到18%以上。这项研究说明了节能的技术和数字证据和机制，这将支持这种新的动态窗技术的未来研究和开发。
A variety of dynamic window and glazing systems with variable solar heat gain control features reacting to seasonal weather conditions and indoor space heating and cooling demands have been investigated in the past several decades. However, the modulation of solar heat gain has to affect the solar light transmittance in most existing dynamic glazing and window systems. In this work, a new type of dynamic window concept was proposed: reversible photothermal windows based on nanoscale solar infrared-induced plasmonic photothermal effects, which can modulate solar heat, independent of visible light conditions. This study provides the underlying technical characteristics and the thermal and optical features under solar irradiation via experimentally validated analytical models. The reversible photothermal windows exhibit a substantial ability to control solar heat gain coefficient with a range between about 0.2 and 0.6 and a stable visible transmittance of 0.32, A whole building energy simulation demonstrates the potential for energy savings offered by reversible photothermal windows could reach over 18% in mixed climates, as compared to baseline models built using the most recent energy efficiency standards. This research illustrates technical and numerical evidence and mechanisms for energy savings that will support future research and development of this new dynamic window technology.