辐射合蒸发冷却水凝用于上空环境散热和阻燃
Qin Ye1, Yimou Huang1, Baojian Yao1
1School of Energy Science and Engineering, Central South University, Changsha, 430001, People's Republic of China.
Nano-micro letters
|September 1, 2025
概括
这项研究介绍了一种用于辐射合蒸发冷却 (REC) 的新型光子水凝. 这种新材料提高了室外设备的散热和阻燃性, 提供了更好的热管理.
科学领域:
- 材料科学
- 热工程
- 纳米技术
背景情况:
- 辐射冷却 (RC) 和蒸发冷却 (EC) 是有效的环境下冷却.
- 室外设备面临室内加热,温度升高和火灾风险的挑战.
- 现有的RC薄膜具有有限的冷却能力和消防安全问题.
研究的目的:
- 开发一个全合一的光子水凝,用于辐射合蒸发冷却 (REC).
- 增强室外设备的高空散热和阻燃性.
- 提高被动水循环的性能,以实现高效的冷却.
主要方法:
- 将辐射冷却和蒸发冷却原理集成到一个光子水凝中.
- 一种能够散热和阻燃的水凝的设计.
- 在户外条件下对水凝性能进行实验验证.
主要成果:
- 与传统的RC膜相比,REC水凝显著改善了散热,在户外达到12.0°C的低温.
- 夜间辐射冷却辅助吸附增强了大气中的水分采集,用于白天的蒸发冷却.
- 这种水凝通过吸收热量而没有温度升高,从而减轻火灾风险而提高了阻燃性.
结论:
- 开发的REC光子水凝为户外设备的热管理提供了有前途的解决方案.
- 这种材料提供了卓越的散热和强大的阻燃性.
- 这种综合方法解决了现有冷却技术的关键局限性.
更多相关视频
12:07Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
Published on: April 16, 2018
13.6K
07:32Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
Published on: April 7, 2017
9.5K
相关概念视频
Mechanisms of Heat Transfer II
3.5K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.5K
Mechanism of heat transfer
1.4K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.4K
Vaporization
35.7K
The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
35.7K
Mechanisms of Heat Transfer
492
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
492
Mechanisms of Heat Transfer I
4.6K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.6K
