Video Experimental Relacionado
Updated: Sep 9, 2025
04:55
Using a Thermal Camera to Measure Heat Loss Through Bird Feather Coats
Published on: June 17, 2020
3.6K
Dispositivo de camuflaje térmico de alta temperatura teniendo en cuenta la transferencia térmica radiativa desde el
Zeyu Lin1, Xiaohong Wang1,2,3, Jiangtai Lin1
1Department of Civil Engineering and Smart Cities, College of Engineering, Shantou University, Shantou 515063, China.
Micromachines
|August 28, 2025
Resumen
Este estudio introduce un nuevo dispositivo de camuflaje térmico que tiene en cuenta la transferencia de calor radiativo de los objetivos. Asegura una transferencia de calor sincrónica entre el dispositivo y el fondo para una ocultación efectiva de la detección infrarroja.
Área de la Ciencia:
- La física
- Ciencias de los materiales
- Ingeniería
Sus antecedentes:
- El camuflaje térmico oculta los objetos de la detección infrarroja mediante la manipulación de los flujos de calor.
- Los métodos existentes a menudo descuidan la transferencia de calor radiativo desde el propio objetivo.
- La ley de Stefan-Boltzmann dicta que la radiación térmica es proporcional a la cuarta potencia de la temperatura (T4).
Objetivo del estudio:
- Proponer un dispositivo de camuflaje térmico que aborde la transferencia térmica radiativa de objetivos emisores de calor.
- Desarrollar una estrategia para la transferencia de calor sincrónica a lo largo del dispositivo y las superficies de fondo.
- Mejorar la gestión térmica para la electrónica de alta potencia y los sistemas sensibles al infrarrojo.
Principales métodos:
- Desarrollo de un nuevo diseño de dispositivo de camuflaje térmico.
- Simulaciones numéricas para validar la viabilidad y el rendimiento del dispositivo.
- Análisis de los parámetros objetivo (geometría, ubicación, temperatura, emisividad) que influyen en el rendimiento.
Principales resultados:
- Las simulaciones numéricas confirman la viabilidad de la estrategia de camuflaje térmico propuesta.
- El dispositivo gestiona eficazmente la transferencia térmica radiativa desde el objetivo.
- El rendimiento se puede optimizar ajustando los parámetros del objetivo y del dispositivo.
Conclusiones:
- El dispositivo propuesto ofrece una solución avanzada para el camuflaje térmico, teniendo en cuenta la transferencia de calor radiativo.
- Esta tecnología tiene aplicaciones significativas en el sigilo infrarrojo, el diagnóstico térmico y la disipación de calor eficiente.
- Avanza en las estrategias de gestión térmica para la electrónica de alta potencia y los sistemas sensibles al infrarrojo.
Videos de Conceptos Relacionados
01:05Absorption of Radiation
819
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
819
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
01:19Mechanism 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
01:14Mechanisms 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
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
01:20Conduction, Convection and Radiation: Problem Solving
1.4K
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...
1.4K