The Potential of Static and Thermochromic Window Films for Energy Efficient Building Renovations

Stijn Kragt, E. R. Van den Ham, H. Sentjens, A. Schenning, T. Klein
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引用次数: 2

Abstract

The type of glazing implemented in a building plays an important role in the heat management of a building. Solar heat entering through glazing causes overheating of interior spaces and increases building’s cooling load. In this work, the energy saving potential of window films based on Cholesteric Liquid Crystals (CLC) is explored. This emerging technology allows for the fabrication of static and thermochromic solar heat rejecting window films and can provide a simple renovation solution towards energy efficient buildings. Simulations on a model office showed that static CLC-based window films can save up to 29% on a building’s annual energy use in warm climates. In climates with distinct summer and winter seasons, static solar heat rejecting windows films cause an additional heating demand during winters, which reduces the annual energy savings. In these climates, the benefit of thermochromic CLC-based window films becomes evident and an annual energy saving up to 22% can be achieved.
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静态和热致变色窗膜在节能建筑改造中的潜力
建筑物中安装的玻璃类型在建筑物的热管理中起着重要作用。通过玻璃窗进入的太阳能会导致内部空间过热,并增加建筑物的冷却负荷。在这项工作中,探索了基于胆甾醇液晶(CLC)的窗口膜的节能潜力。这项新兴技术允许制造静态和热变色的太阳能散热窗膜,并可以为节能建筑提供简单的翻新解决方案。对一个模型办公室的模拟表明,在温暖的气候下,基于CLC的静态窗膜可以节省建筑物每年29%的能源使用。在夏季和冬季不同的气候条件下,静态太阳能散热窗膜会在冬季产生额外的供暖需求,从而减少每年的能源节约。在这些气候条件下,基于热致变色CLC的窗膜的好处变得明显,并且每年可以实现高达22%的节能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Facade Design and Engineering
Journal of Facade Design and Engineering Engineering-Architecture
CiteScore
1.90
自引率
0.00%
发文量
3
审稿时长
12 weeks
期刊介绍: The Journal of Facade Design and Engineering presents new research results and new proven practice in the field of facade design and engineering. The goal is to improve building technologies, as well as process management and architectural design. This journal is a valuable resource for professionals and academics involved in the design and engineering of building envelopes, including the following disciplines: Architecture Façade Engineering Climate Design Building Services Integration Building Physics Façade Design and Construction Management Novel Material Applications. The journal will be directed at the scientific community, but it will also feature papers that focus on the dissemination of science into practice and industrial innovations. In this way, readers explore the interaction between scientific developments, technical considerations and management issues.
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