thermal conductivity

简明释义

导热系数;导热性

英英释义

例句

1.Metals generally have high thermal conductivity, making them good conductors of heat.

金属通常具有高热导率，使它们成为良好的热导体。

2.Understanding the thermal conductivity of a substance helps in material selection for electronics.

理解物质的热导率有助于电子产品的材料选择。

3.In construction, the thermal conductivity of walls affects the energy efficiency of buildings.

在建筑中，墙体的热导率影响建筑的能效。

4.The material's thermal conductivity is crucial for designing efficient heat exchangers.

材料的热导率对于设计高效的热交换器至关重要。

5.Insulation materials typically have low thermal conductivity to reduce heat loss.

绝缘材料通常具有低热导率以减少热量损失。

作文

Thermal conductivity is a fundamental property of materials that determines how well they conduct heat. In essence, it measures the ability of a substance to transfer thermal energy from one part to another. This property is crucial in various fields, including engineering, physics, and materials science. Understanding thermal conductivity (热导率) is essential for designing efficient thermal systems, such as heat exchangers, insulation materials, and electronic devices.The concept of thermal conductivity (热导率) can be illustrated through everyday examples. For instance, metals like copper and aluminum have high thermal conductivity (热导率), meaning they can quickly transfer heat. This is why cooking utensils are often made from these materials; they allow heat to spread evenly across the surface, resulting in better cooking results. On the other hand, materials like wood or rubber have low thermal conductivity (热导率), making them excellent insulators. They resist the flow of heat, which is why we use wooden handles on pots and pans to prevent burns.In scientific terms, thermal conductivity (热导率) is defined as the amount of heat that passes through a unit area of a material in a given time when there is a temperature difference. It is typically measured in watts per meter-kelvin (W/m·K). The higher the value of thermal conductivity (热导率), the better the material is at conducting heat. Conversely, materials with low thermal conductivity (热导率) are used for insulation purposes to minimize heat loss.The importance of thermal conductivity (热导率) extends beyond everyday applications. In the field of construction, understanding the thermal conductivity (热导率) of building materials helps architects and engineers create energy-efficient structures. For example, using materials with low thermal conductivity (热导率) for walls and roofs can significantly reduce heating and cooling costs in buildings. This not only benefits the environment by lowering energy consumption but also provides economic advantages to homeowners.Moreover, in electronics, managing thermal conductivity (热导率) is vital for the performance and longevity of devices. As electronic components generate heat during operation, materials with high thermal conductivity (热导率) are often used in heat sinks to dissipate this heat effectively. This prevents overheating, which can lead to device failure and reduced lifespan.Research into thermal conductivity (热导率) continues to evolve, particularly with the development of new materials such as nanomaterials and composites. Scientists are exploring ways to enhance the thermal conductivity (热导率) of materials while maintaining their lightweight and durable characteristics. This research has significant implications for various industries, including aerospace, automotive, and renewable energy.In conclusion, thermal conductivity (热导率) is a critical property that influences the design and functionality of countless products and systems. From everyday kitchenware to advanced electronic devices and energy-efficient buildings, understanding thermal conductivity (热导率) allows us to make informed choices about materials and their applications. As technology advances, the study of thermal conductivity (热导率) will continue to play a pivotal role in innovation and sustainability.

热导率是材料的一个基本属性，决定了它们传导热量的能力。实质上，它衡量的是一种物质将热能从一部分转移到另一部分的能力。这一属性在工程、物理和材料科学等多个领域中至关重要。理解热导率（thermal conductivity）对设计高效的热系统，如热交换器、绝缘材料和电子设备至关重要。热导率（thermal conductivity）的概念可以通过日常例子来说明。例如，铜和铝等金属具有高热导率（thermal conductivity），这意味着它们能够迅速传导热量。这就是为什么烹饪用具通常由这些材料制成的原因；它们允许热量均匀地分布在表面，从而获得更好的烹饪效果。另一方面，木材或橡胶等材料具有低热导率（thermal conductivity），使它们成为优秀的绝缘体。它们抵抗热量的流动，这就是为什么我们在锅具上使用木制把手以防止烫伤。在科学术语中，热导率（thermal conductivity）被定义为在给定时间内，当存在温度差时，通过单位面积的材料传递的热量。它通常以瓦特每米开尔文（W/m·K）来衡量。热导率（thermal conductivity）值越高，材料导热性能越好。相反，低热导率（thermal conductivity）材料则用于绝缘，以最小化热损失。热导率（thermal conductivity）的重要性超越了日常应用。在建筑领域，理解建筑材料的热导率（thermal conductivity）有助于建筑师和工程师创建节能结构。例如，使用低热导率（thermal conductivity）材料作为墙壁和屋顶，可以显著降低建筑的供暖和制冷成本。这不仅通过降低能源消耗使环境受益，也为房主提供了经济优势。此外，在电子产品中，管理热导率（thermal conductivity）对于设备的性能和寿命至关重要。由于电子元件在运行时会产生热量，因此通常使用高热导率（thermal conductivity）材料作为散热器，以有效散发热量。这可以防止过热，避免设备故障和缩短使用寿命。对热导率（thermal conductivity）的研究仍在不断发展，特别是在纳米材料和复合材料等新材料的开发方面。科学家们正在探索在保持材料轻便和耐用特性的同时，提高其热导率（thermal conductivity）的方法。这项研究对航空航天、汽车和可再生能源等多个行业具有重要意义。总之，热导率（thermal conductivity）是影响无数产品和系统设计与功能的关键属性。从日常厨房用具到先进的电子设备和节能建筑，理解热导率（thermal conductivity）使我们能够对材料及其应用做出明智的选择。随着技术的进步，对热导率（thermal conductivity）的研究将继续在创新和可持续发展中发挥重要作用。