一种测量方法,用于在高发射率材料中描述与温度相关的发射率变量
Gloria Cosoli1,2, Paolo Chiariotti3, Beatriz García-Baños4
1Department of Theoretical and Applied Sciences, eCampus University, 22060 Novedrate, Italy.
Sensors (Basel, Switzerland)
|January 25, 2025
概括
精确的温度测量需要知道材料的排放性,特别是在高温应用中. 这项研究引入了一种新的微波加热方法,用于确定高排放性材料的总排放率.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 计量学 计量学 计量学
背景情况:
- 准确的非接触式温度测量,使用热量测量和热成像,取决于精确的知识的材料排放性.
- 材料的排放性取决于温度,这是高温应用中的关键因素.
- 由于工业过程中需要更绿色的能源解决方案,对高温应用的重新兴趣,需要更好地描述辐射特性.
研究的目的:
- 开发和验证一种测量方法,以表征高排放性材料的总排放性.
- 为了利用微波加热作为一种在排放性测量中准备样本的方法.
- 提供测量学特征的方法与不确定性分析.
主要方法:
- 采用顺序测量方法,使用具有已知的排放率的参考材料.
- 微波加热用于使试验材料达到所需的高温条件.
- 进行不确定性分析以确保排放量测量的可靠性和计量可追溯性.
主要成果:
- 拟议的程序在已知发射率的目标材料上得到了验证,包括用于微波加热的材料.
- 使用新方法获得的结果与现有的文献值和材料数据表相兼容.
- 该研究成功地证明了微波辅助辐射特性表征技术的有效性和适用性.
结论:
- 开发的微波辅助程序提供了一种可靠的方法来确定高发射率材料的总发射率.
- 这种技术特别适用于用于高温工业过程的材料,包括使用微波加热的材料.
- 计量学表征和验证证实了拟议的排放性测量方法的准确性和实际实用性.
相关概念视频
01:05Absorption of Radiation
702
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
702
01:17Radiation: Applications
1.1K
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...
1.1K
01:04Random Error
799
Random or indeterminate errors originate from various uncontrollable variables, such as variations in environmental conditions, instrument imperfections, or the inherent variability of the phenomena being measured. Usually, these errors cannot be predicted, estimated, or characterized because their direction and magnitude often vary in magnitude and direction even during consecutive measurements. As a result, they are difficult to eliminate. However, the aggregate effect of these errors can be...
799
02:46Quantifying Heat
53.8K
Thermal Energy
53.8K
01:20Atomic Emission Spectroscopy: Overview
1.4K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
1.4K
01:20Conduction, 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