辐射冷却技术的设计策略,制造和应用
Joonho Kang1, Changkyun Lee2, Haejun Chung3
1Department of Artificial Intelligence Semiconductor Engineering, Hanyang University, Seoul, 04763, South Korea.
Nanophotonics (Berlin, Germany)
|July 21, 2025
概括
辐射冷却通过向太空释放热量,为传统冷却提供了一种节能替代方案. 先进的材料增强了这种被动冷却,但对于广泛采用仍然存在挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米光子学 纳米光子学
- 热力工程是热力工程中的一个.
背景情况:
- 辐射冷却是一种通过热辐射散发热量的被动技术.
- 它为传统冷却系统提供了一个节能和环保的替代方案.
- 材料科学和纳米光子学的进步正在推动该领域的创新.
研究的目的:
- 审查工程辐射冷却材料的最新发展.
- 突出这些材料在各种应用中的潜力.
- 确定阻碍商业化发展的挑战,并建议未来的研究方向.
主要方法:
- 开发具有定制光学和热性质的工程材料.
- 使用光子结构,多层薄膜,超材料和聚合物复合材料.
- 专注于最大限度地提高太阳反射率和红外辐射率,以提高冷却效率.
主要成果:
- 工程材料表现出增强的辐射冷却性能.
- 可扩展,轻量化和耐用的冷却解决方案现在是可行的.
- 应用范围涵盖建筑包裹,电子和城市基础设施.
结论:
- 辐射冷却材料在减少能源消耗和提高气候适应性方面显示出显著的前景.
- 需要进一步的研究来解决材料降解,制造成本和在炎热/潮湿气候中的性能问题.
- 克服这些挑战将使可持续技术的广泛商业化和整合成为可能.
更多相关视频
10:36Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
Published on: November 3, 2023
1.7K
07:18Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
Published on: October 18, 2017
14.7K
相关概念视频
01:17Radiation: Applications
1.2K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
1.2K
01:07Refrigerators and Heat Pumps
2.4K
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...
2.4K
01:20Mechanisms 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
01:14Mechanisms of Heat Transfer
514
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...
514
01:14Mechanisms 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
01:05Absorption of Radiation
822
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
822