一个适应式太阳能调节和长波辐射热管理智能窗口,用于节能节能
Cong Liu1, Caixia Sun1, Luyao Guo1
1School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China.
ACS applied materials & interfaces
|October 22, 2025
概括
这项研究引入了一种具有可调节排放率的新型智能窗口,用于高效的冷却和绝缘. 它克服了现有的热色材料的局限性,提供逐渐的透明度变化和高对比度发射率切换.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 能源效率 能源效率 能源效率
背景情况:
- 辐射冷却材料利用长波红外 (LWIR) 辐射进行制冷,但对于季节性应用需要可调节的辐射率.
- 现有的热色液凝智能窗户变得不透明,阻碍白天照明和极端温度以外的可见性.
- 需要经济,适应季节的智能窗户材料来调节LWIR发射率和透明度.
研究的目的:
- 设计一个带有热色相变层的智能窗口,用于可调节的发射率和渐进的透明度调制.
- 为了克服传统热色液凝系统的不透明性限制.
- 开发一个具有成本效益的解决方案,用于建筑物的夏季冷却和冬季绝缘.
主要方法:
- 设计了一种热色相变层,使用了用导电性聚烯烯凝添加过的聚烯烯胺 (PNIPAM).
- 集成了一个温度传感器和一个修改的T-MXene分散的高排放性凝.
- 在自制模型中,先驱溶液的现场聚合,被透明的聚4-甲基-1- (PMP) 和低E玻璃封装.
主要成果:
- 开发了一个智能窗口,具有广泛的热色相变换范围 (3250 °C).
- 通过机械翻转和逐渐的透明度变化实现了高对比度的发射性切换.
- 展示了一个功能性原型,集成温度传感器和可调节的发射率.
结论:
- 工程智能窗户为建筑物中的自适应热管理提供了一个有前途的解决方案.
- 该设计为推进智能窗户技术和节能窗户提供了有价值的见解.
- 这种方法为下一代可持续建筑材料铺平了道路.
更多相关视频
09:00Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass ADG Fresnel Lens for Concentrating Photovoltaics
Published on: October 27, 2017
9.3K
09:09Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
Published on: February 5, 2020
7.6K
相关概念视频
01:20Conduction, Convection and Radiation: Problem Solving
2.2K
There are three methods by which heat transfer can take place: conduction, convection, and radiation. Each method has unique and interesting characteristics, but all three have two things in common: they transfer heat solely because of a temperature difference; and the greater the temperature difference, the faster the heat transfer.
In order to solve a problem related to heat transfer, first of all, the situation needs to be examined to determine the type of heat transfer involved. This could...
In order to solve a problem related to heat transfer, first of all, the situation needs to be examined to determine the type of heat transfer involved. This could...
2.2K
02:44Heating and Cooling Curves
26.5K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
26.5K
01:22Thermal Insulation in Masonry Walls
474
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
474
01:26Design Example: Sustainability in Concrete Building
386
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
386
01:07Refrigerators and Heat Pumps
3.0K
Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance.
A household refrigerator removes heat from...
A household refrigerator removes heat from...
3.0K
01:23Insulation Coordination
552
Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times...
552