向室温热色涂层具有可控制的NIR-IR调制,用于太阳能热管理和智能窗口应用
B S Khanyile1,2, N Numan3,4, A Simo3,4
1MRD-Tandetron Accelerator & Nanosciences African Network, iThemba LABS-National Research Foundation, P O Box 722, Somerset West, 7129, Western Cape Province, South Africa. sfundob@gmail.com.
Scientific reports
|February 2, 2024
概括
研究人员开发了可调节的氧化物智能涂层,用于有效的太阳能热管理. 这些热色涂层降低过渡温度,使绿色空调和建筑物和车辆的二氧化碳足迹减少.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 可持续能源 可持续能源
背景情况:
- 太阳能热管理和绿色空调对于缓解城市热岛和减少建筑物和汽车行业的二氧化碳排放至关重要.
- 热色智能涂层提供动态太阳红外调节,以有效管理热量,特别是在全球气温上升的情况下.
研究的目的:
- 解决基于氧化瓦纳的智能涂层的挑战,特别是控制近红外 (NIR-IR) 光传输调制 (ΔTTRANS).
- 显著降低这些涂料的相变温度 (T MIT).
- 为了证明V2O5/V/V2O5多层系统中热色特性的可调性.
主要方法:
- 多层V2O5/V/V2O5堆的制造.
- 调整中间 (V) 层的厚度.
- 在NIR-IR频谱中光学传输调制的表征.
- 测量热色过渡温度 (T MIT) 的方法.
主要成果:
- 首次证明了在氧化瓦纳智能涂层中可控制和调节的NIR-IR光学传输调制 (ΔTTRANS).
- 实现了相变温度 (T MIT) 从68.8°C大幅降低到27.537.5°C的范围.
- 在V2O5/V/V2O5多层中报告了大量的热色,通过中间V层厚度可调节的ΔTTRANS.
结论:
- V2O5/V/V2O5多层系统为先进的热色智能窗户技术提供了一个有前途的方法.
- 可调节的NIR-IR调制和降低过渡温度是通过纳米尺度厚度控制实现的.
- 这些发现为节能太阳能热管理和可持续的绿色空调解决方案铺平了道路.
相关概念视频
Conduction, Convection and Radiation: Problem Solving
1.2K
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...
1.2K
Thermometers and Temperature Scales
5.4K
Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
As many physical properties depend on temperature, the variety of thermometers is...
5.4K
Body Temperature
956
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
956
Temperature and Thermal Equilibrium
6.7K
Heat and temperature are essential concepts for everyone every day. The study of heat and temperature is part of an area of physics known as thermodynamics. It is not always easy to distinguish heat and temperature.
The concept of temperature has evolved from the common concepts of hot and cold. The scientific definition of temperature explains more than just our sense of hot and cold. Temperature is operationally defined as the quantity measured with a thermometer. Furthermore, temperature is...
The concept of temperature has evolved from the common concepts of hot and cold. The scientific definition of temperature explains more than just our sense of hot and cold. Temperature is operationally defined as the quantity measured with a thermometer. Furthermore, temperature is...
6.7K
Thermosensation
30.4K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
30.4K
Equipments Used to Measure Body Temperature
1.0K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
1.0K


