Multi-gradient energy-saving smart windows with thermo-response and multimodal thermal energy storage†

IF 12.2 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Yang Zhou, Yiqi He, Sisi Zhao, Simeng Qi, Lulu Wang, Yingchun Niu, Quan Xu, Chunming Xu and Juncheng Wang
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Abstract

Buildings, especially installed windows, account for a large proportion of global energy consumption. The research trend of smart windows leans towards multi-functional integration, concurrently achieving solar modulation and thermal management. However, sometimes a one-time performance switch cannot meet demands, making the design of multi-gradient adjustable smart windows particularly important. The combination of the temperature-responsive optical properties of hydroxypropyl cellulose (HPC), the high specific heat capability of water (sensible heat storage) and the solid–liquid phase transition of κ-carrageenan (latent heat storage) is proposed first and can be used to prepare the thermo-responsive hydrogel and multi-gradient energy-saving smart window with thermo-response and multimodal thermal energy storage (MGES smart window) quickly without long-term polymerization. The MGES smart window has excellent solar modulation capability (ΔTlum = 82.72% and ΔTsol = 68.65%) together with outstanding specific heat absorption ability (c = 4.2 kJ kg−1 K−1) and phase transition heat (ΔH = 1.23 kJ kg−1), showing superior energy saving and conserving performance. In demonstrations, the MGES smart windows can reduce the surface and indoor temperature by more than 15 °C and 10.6 °C compared with normal windows. Simulations suggest that they can cut off 45.1% of building energy consumption. To sum up, the MGES smart windows realize multi-aspect adjustment of energy, opening up a new avenue for green buildings.

Abstract Image

具有热响应和多模态储热功能的多梯度节能智能窗。
建筑,尤其是安装了窗户的建筑,在全球能源消耗中占很大比例。智能窗户的研究趋势是多功能集成,同时实现太阳能调制和热管理。然而,有时一次性的性能开关不能满足需求,这使得多梯度可调智能窗的设计显得尤为重要。首次提出将羟丙基纤维素(HPC)的温度响应光学性质、水的高比热能(显热储存)和κ-角叉胶的固液相转变(潜热储存)相结合,可快速制备具有热响应和多模态热储存的热响应水凝胶和多梯度节能智能窗(MGES智能窗),而无需长时间聚合。MGES智能窗具有优异的太阳能调制能力(ΔTlum = 82.72%, ΔTsol = 68.65%),具有出色的比热吸收能力(c = 4.2 kJ kg-1 K-1)和相变热(ΔH = 1.23 kJ kg-1),具有优异的节能和节能性能。在演示中,与普通窗户相比,MGES智能窗户可以将表面和室内温度分别降低15°C和10.6°C以上。模拟表明,它们可以减少45.1%的建筑能耗。综上所述,MGES智能窗实现了能源的多方位调节,为绿色建筑开辟了一条新的途径。
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来源期刊
Materials Horizons
Materials Horizons CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
18.90
自引率
2.30%
发文量
306
审稿时长
1.3 months
期刊介绍: Materials Horizons is a leading journal in materials science that focuses on publishing exceptionally high-quality and innovative research. The journal prioritizes original research that introduces new concepts or ways of thinking, rather than solely reporting technological advancements. However, groundbreaking articles featuring record-breaking material performance may also be published. To be considered for publication, the work must be of significant interest to our community-spanning readership. Starting from 2021, all articles published in Materials Horizons will be indexed in MEDLINE©. The journal publishes various types of articles, including Communications, Reviews, Opinion pieces, Focus articles, and Comments. It serves as a core journal for researchers from academia, government, and industry across all areas of materials research. Materials Horizons is a Transformative Journal and compliant with Plan S. It has an impact factor of 13.3 and is indexed in MEDLINE.
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