loss by radiation

简明释义

辐射损失

英英释义

例句

1.The efficiency of the thermal insulation was reduced due to significant loss by radiation.

由于显著的辐射损失，热绝缘的效率降低了。

2.The laboratory measured the loss by radiation from the heated surface of the metal.

实验室测量了金属加热表面的辐射损失。

3.Engineers are working on minimizing the loss by radiation in the new design of the furnace.

工程师们正在努力减少新炉设计中的辐射损失。

4.To improve energy efficiency, we must address the loss by radiation in our heating systems.

为了提高能效，我们必须解决供暖系统中的辐射损失问题。

5.In space applications, loss by radiation can greatly affect the performance of satellites.

在太空应用中，辐射损失会极大影响卫星的性能。

作文

In the realm of physics and engineering, the concept of energy transfer is crucial, particularly when discussing heat and its various forms. One significant aspect of this energy transfer is the phenomenon known as loss by radiation, which refers to the process through which energy is emitted in the form of electromagnetic waves, primarily in the infrared spectrum. This occurs when an object at a certain temperature emits energy into its surroundings, resulting in a decrease in its thermal energy. Understanding loss by radiation is essential for various applications, including thermal insulation, energy efficiency, and climate control.To illustrate the importance of loss by radiation, let us consider a simple example: a hot cup of coffee left on a table. The coffee, having a higher temperature than the surrounding environment, will begin to lose heat. This heat loss occurs through conduction, convection, and most importantly, loss by radiation. As the coffee radiates energy, it gradually cools down, demonstrating how energy can be transferred without direct contact.The rate of loss by radiation depends on several factors, such as the temperature difference between the object and its environment, the surface area of the object, and the emissivity of the material. Emissivity is a measure of how effectively a surface emits thermal radiation compared to a perfect black body. For instance, a matte black surface has a high emissivity, meaning it radiates energy more efficiently than a shiny metallic surface, which has a low emissivity.In engineering applications, minimizing loss by radiation is often a key objective. In buildings, for example, architects and engineers strive to design structures that limit heat loss during colder months while maximizing heat retention. This can be achieved through the use of insulating materials that have low emissivity and high thermal resistance, thereby reducing the amount of energy lost through radiation.Moreover, loss by radiation also plays a significant role in environmental science. The Earth absorbs solar radiation and re-emits it back into space as thermal radiation. This natural process is vital for maintaining the planet's temperature balance. However, human activities, such as the burning of fossil fuels, have increased the concentration of greenhouse gases in the atmosphere, leading to enhanced greenhouse effects. These gases trap heat, reducing the amount of thermal radiation escaping into space and contributing to global warming.In summary, loss by radiation is a fundamental concept in understanding energy transfer in various contexts. From everyday situations like a cooling cup of coffee to complex global phenomena such as climate change, recognizing the mechanisms and implications of loss by radiation is essential. By improving our understanding of this process, we can develop better technologies and strategies to manage energy consumption and mitigate environmental impacts. Therefore, further research and education on this topic are crucial for both scientific advancement and sustainable living practices.

在物理和工程领域，能量传递的概念至关重要，特别是在讨论热量及其各种形式时。一个显著的方面是被称为辐射损失的现象，它指的是以电磁波的形式发射能量的过程，主要是在红外光谱中。当一个物体处于一定温度时，它会向周围环境发出能量，从而导致其热能的减少。理解辐射损失对于各种应用至关重要，包括热绝缘、能效和气候控制。为了说明辐射损失的重要性，让我们考虑一个简单的例子：放在桌子上的一杯热咖啡。这杯咖啡的温度高于周围环境，因而开始失去热量。这个热量的损失通过导热、对流，最重要的是通过辐射损失发生。随着咖啡辐射能量，它逐渐冷却，展示了能量如何在没有直接接触的情况下转移。辐射损失的速率取决于几个因素，例如物体与环境之间的温差、物体的表面积以及材料的发射率。发射率是衡量一个表面相对于完美黑体发射热辐射的有效性的指标。例如，哑光黑色表面具有高发射率，这意味着它比光滑金属表面（发射率低）更有效地辐射能量。在工程应用中，最小化辐射损失通常是一个关键目标。在建筑中，例如，建筑师和工程师努力设计结构，以限制寒冷月份的热量损失，同时最大限度地保留热量。这可以通过使用具有低发射率和高热阻的绝缘材料来实现，从而减少通过辐射损失的能量。此外，辐射损失在环境科学中也发挥着重要作用。地球吸收太阳辐射并将其作为热辐射重新发射到太空。这一自然过程对于维持地球的温度平衡至关重要。然而，人类活动，如燃烧化石燃料，增加了大气中温室气体的浓度，导致温室效应增强。这些气体捕获热量，减少了热辐射逃逸到太空的数量，并促进了全球变暖。总之，辐射损失是理解各种背景下能量传递的基本概念。从日常情况如冷却的咖啡杯到复杂的全球现象如气候变化，认识到辐射损失的机制和影响是至关重要的。通过提高我们对这一过程的理解，我们可以开发更好的技术和策略来管理能源消耗并减轻环境影响。因此，进一步研究和教育这个主题对于科学进步和可持续生活实践至关重要。