emissive power

简明释义

发射能力

英英释义

例句

1.In thermal imaging, understanding the emissive power 辐射功率 of different materials is crucial for accurate temperature readings.

在热成像中，理解不同材料的emissive power 辐射功率对于准确的温度读数至关重要。

2.The sun has a high emissive power 辐射功率, which is why it can warm the Earth so effectively.

太阳的emissive power 辐射功率很高，这就是它能有效加热地球的原因。

3.The emissive power 辐射功率 of a black body is defined as its ability to emit thermal radiation.

黑体的emissive power 辐射功率被定义为其发射热辐射的能力。

4.Different surfaces have varying emissive power 辐射功率, affecting how they absorb and emit heat.

不同表面的emissive power 辐射功率各不相同，影响它们吸收和发射热量的方式。

5.Engineers must consider the emissive power 辐射功率 when designing heat exchangers for efficiency.

工程师在设计热交换器以提高效率时必须考虑emissive power 辐射功率。

作文

In the realm of physics and engineering, the concept of emissive power plays a crucial role in understanding how objects emit thermal radiation. The emissive power of a surface is defined as the amount of thermal radiation emitted per unit area, per unit time, at a specific temperature. This property is vital for various applications, including climate control, material science, and energy efficiency. To comprehend the significance of emissive power, one must first grasp the principles of thermal radiation. All objects emit radiation based on their temperature, a phenomenon described by Planck's law. The higher the temperature of an object, the more radiation it emits. However, not all surfaces emit radiation equally; this is where the concept of emissive power comes into play.The emissive power is influenced by several factors, including the material properties of the surface, its texture, and its color. For instance, a black surface typically has a higher emissive power compared to a shiny metallic surface. This difference arises because black surfaces absorb and emit radiation more efficiently than reflective surfaces. Understanding these differences is essential for engineers when designing systems that require precise thermal management, such as in spacecraft or high-performance engines.Furthermore, the emissive power is also significant in the context of environmental science. For example, the Earth’s surface absorbs solar radiation and re-emits it as infrared radiation. The balance between absorbed solar energy and emitted thermal radiation determines the planet’s temperature. By studying the emissive power of various surfaces, scientists can better understand climate change and develop strategies to mitigate its effects.In practical applications, the emissive power is crucial in processes like thermal insulation and energy conservation. For instance, materials with low emissive power are often used in building construction to minimize heat loss during winter months. Similarly, reflective coatings are applied to roofs to reduce heat absorption in hot climates, thereby improving energy efficiency in buildings. Moreover, the concept of emissive power extends to modern technology, particularly in the field of thermography. Infrared cameras measure the thermal radiation emitted by objects, allowing for non-invasive inspections in various industries, from electrical maintenance to medical diagnostics. By analyzing the emissive power of different materials, technicians can identify issues such as overheating components or detect anomalies in biological tissues.In conclusion, the understanding of emissive power is fundamental in multiple disciplines, including physics, engineering, and environmental science. It influences how we design energy-efficient systems, comprehend climate dynamics, and utilize advanced technologies. As we continue to face challenges related to energy consumption and environmental sustainability, a deeper understanding of emissive power will undoubtedly play a key role in developing innovative solutions for the future.

在物理和工程领域，发射功率的概念在理解物体如何发出热辐射方面发挥着至关重要的作用。表面的发射功率定义为单位面积、单位时间内以特定温度发出的热辐射量。这个属性对于各种应用至关重要，包括气候控制、材料科学和能源效率。要理解发射功率的重要性，首先必须掌握热辐射的原理。所有物体根据其温度发出辐射，这一现象由普朗克定律描述。物体的温度越高，发出的辐射就越多。然而，并非所有表面都以相同的方式发出辐射；这就是发射功率的概念发挥作用的地方。发射功率受多个因素的影响，包括表面的材料特性、纹理和颜色。例如，黑色表面的发射功率通常比光亮金属表面高。这种差异的产生是因为黑色表面比反射表面更有效地吸收和发出辐射。理解这些差异对于工程师在设计需要精确热管理的系统时至关重要，例如在航天器或高性能发动机中。此外，发射功率在环境科学中也具有重要意义。例如，地球表面吸收太阳辐射并将其重新发射为红外辐射。吸收的太阳能和发出的热辐射之间的平衡决定了地球的温度。通过研究各种表面的发射功率，科学家可以更好地理解气候变化，并制定减缓其影响的策略。在实际应用中，发射功率在热绝缘和节能等过程中至关重要。例如，低发射功率的材料通常用于建筑施工，以最小化冬季的热损失。同样，反射涂层被应用于屋顶，以减少在炎热气候中吸收的热量，从而提高建筑的能源效率。此外，发射功率的概念扩展到现代技术，特别是在热成像领域。红外相机测量物体发出的热辐射，允许在各个行业进行非侵入性检查，从电气维护到医学诊断。通过分析不同材料的发射功率，技术人员可以识别过热组件或检测生物组织中的异常。总之，理解发射功率在多个学科中都是基础，包括物理、工程和环境科学。它影响我们设计节能系统、理解气候动态以及利用先进技术的方式。随着我们继续面临与能源消耗和环境可持续性相关的挑战，对发射功率的更深入理解无疑将在未来开发创新解决方案中发挥关键作用。