coefficient of radiation

简明释义

辐射系数

英英释义

例句

1.The coefficient of radiation helps in understanding how different materials emit thermal energy.

辐射系数有助于理解不同材料如何发出热能。

2.The coefficient of radiation is essential in calculating the heat transfer in thermal insulation materials.

辐射系数在计算热绝缘材料中的热传递时至关重要。

3.In solar panel design, the coefficient of radiation is crucial for optimizing energy efficiency.

在太阳能电池板设计中，辐射系数对于优化能效至关重要。

4.The engineer calculated the coefficient of radiation to determine how much heat was lost through the building's walls.

工程师计算了辐射系数以确定建筑墙体的热量损失。

5.To improve HVAC systems, technicians often refer to the coefficient of radiation for various materials.

为了改善HVAC系统，技术人员通常会参考各种材料的辐射系数。

作文

The concept of the coefficient of radiation is crucial in understanding how different materials absorb and emit thermal energy. In physics, this coefficient quantifies the efficiency with which a surface can emit thermal radiation compared to a perfect black body. A black body is an idealized physical object that absorbs all incoming radiation and re-emits it perfectly, making it a standard reference point for measuring radiative properties.When we talk about the coefficient of radiation, we are often referring to the emissivity of a surface, which ranges from 0 to 1. A surface with an emissivity of 1 is a perfect black body, while a surface with an emissivity of 0 is a perfect reflector, meaning it does not emit any thermal radiation. Understanding this concept is essential in various fields, including engineering, meteorology, and environmental science.In engineering applications, the coefficient of radiation plays a vital role in designing heating and cooling systems. For instance, when engineers design radiators, they must consider the materials used and their emissivity. Materials with high emissivity are preferred because they can effectively transfer heat to the surrounding environment. Conversely, low-emissivity materials might be used in insulation to prevent heat loss. This balance is critical for optimizing energy efficiency in buildings and industrial processes.Moreover, the coefficient of radiation is also significant in the study of climate change. The Earth’s surface absorbs solar radiation and emits infrared radiation back into space. The efficiency of this process is influenced by the emissivity of various surfaces, such as forests, oceans, and urban areas. Darker surfaces, like forests, have a higher emissivity compared to lighter surfaces like ice or concrete. This difference impacts local and global temperatures, contributing to the complex dynamics of climate systems.In the realm of astronomy, the coefficient of radiation is essential for understanding celestial bodies. Stars, for example, emit energy based on their temperature and surface characteristics. By studying the radiation emitted by different stars, astronomers can infer their temperatures, compositions, and distances from Earth. This information is vital for constructing models of stellar evolution and understanding the universe's structure.Furthermore, the coefficient of radiation is also relevant in everyday life. For instance, when choosing materials for roofing or exterior walls, builders often consider the emissivity of these materials. A roof with a high emissivity can help cool a building by radiating heat away during the day, whereas a low-emissivity roof may retain heat, leading to higher cooling costs.In conclusion, the coefficient of radiation is a fundamental concept that impacts various scientific and practical applications. From engineering to environmental science and even astronomy, understanding how materials interact with thermal radiation allows us to make informed decisions that enhance energy efficiency, contribute to climate studies, and deepen our knowledge of the universe. As we continue to face challenges related to energy consumption and climate change, the importance of mastering concepts like the coefficient of radiation cannot be overstated. It is a key factor in developing technologies and strategies that promote sustainability and resilience in our world.

“辐射系数”这一概念在理解不同材料如何吸收和发出热能方面至关重要。在物理学中，这个系数量化了一个表面相对于完美黑体发出热辐射的效率。黑体是一个理想化的物理物体，能够吸收所有入射辐射并完美地重新发射，使其成为测量辐射特性的标准参考点。当我们谈论“辐射系数”时，通常指的是表面的发射率，其范围从0到1。发射率为1的表面是一个完美的黑体，而发射率为0的表面则是一个完美的反射体，意味着它不发出任何热辐射。理解这一概念在多个领域中都是必不可少的，包括工程、气象学和环境科学。在工程应用中，“辐射系数”在设计供暖和制冷系统中起着重要作用。例如，当工程师设计散热器时，必须考虑所用材料及其发射率。高发射率的材料更受欢迎，因为它们可以有效地将热量传递到周围环境。相反，低发射率的材料可能用于绝缘，以防止热量损失。这种平衡对于优化建筑物和工业过程中的能源效率至关重要。此外，“辐射系数”在研究气候变化中也具有重要意义。地球表面吸收太阳辐射并将红外辐射重新发射回太空。这一过程的效率受各种表面的发射率影响，例如森林、海洋和城市地区。较暗的表面，如森林，具有比冰或混凝土等较浅表面更高的发射率。这一差异影响局部和全球温度，促进气候系统复杂动态的发展。在天文学领域，“辐射系数”对于理解天体至关重要。例如，恒星根据其温度和表面特征发出能量。通过研究不同恒星发出的辐射，天文学家可以推断它们的温度、成分和与地球的距离。这些信息对于构建恒星演化模型和理解宇宙结构至关重要。此外，“辐射系数”在日常生活中也具有相关性。例如，在选择屋顶或外墙材料时，建筑商通常会考虑这些材料的发射率。具有高发射率的屋顶可以通过在白天辐射热量来帮助降温，而低发射率的屋顶可能会保留热量，从而导致更高的制冷成本。总之，“辐射系数”是一个基本概念，影响着各种科学和实际应用。从工程到环境科学，甚至天文学，理解材料如何与热辐射相互作用使我们能够做出明智的决策，提高能源效率，促进气候研究，加深我们对宇宙的认识。随着我们继续面临与能源消耗和气候变化相关的挑战，掌握“辐射系数”等概念的重要性不容小觑。这是开发促进可持续性和韧性的技术和战略的关键因素。