heat conductivity

简明释义

热导率

英英释义

例句

1.Insulation materials are chosen for their low heat conductivity.

绝缘材料因其低热导率而被选用。

2.The heat conductivity of metals is generally higher than that of non-metals.

金属的热导率通常高于非金属。

3.The heat conductivity of a substance affects its ability to transfer heat.

物质的热导率影响其传热能力。

4.Copper has excellent heat conductivity, making it ideal for electrical wiring.

铜具有优良的热导率，使其成为电线的理想材料。

5.In cooking, the heat conductivity of pots and pans can affect cooking times.

在烹饪中，锅具的热导率会影响烹饪时间。

作文

Heat conductivity is a fundamental property of materials that dictates how well they can conduct heat. In simple terms, it refers to the ability of a substance to transfer thermal energy from one part to another. Materials with high heat conductivity (热导率) are excellent at transferring heat, while those with low heat conductivity (热导率) act as insulators. This property is crucial in various applications, from construction to electronics, and even in everyday household items.To understand heat conductivity (热导率), we must first consider the atomic structure of materials. Atoms in metals, for instance, are closely packed and allow free movement of electrons. This electron mobility is what gives metals their high heat conductivity (热导率). When one end of a metal rod is heated, the energy is quickly transferred through the material as the excited electrons collide with neighboring atoms, transferring their energy in the process.In contrast, non-metals like wood or plastic have a different atomic structure. The electrons in these materials are not free to move as easily, resulting in lower heat conductivity (热导率). This makes them suitable for insulation, as they slow down the transfer of heat. For example, when you touch a wooden surface, it feels cooler than a metal surface at the same temperature because wood does not conduct heat away from your skin as efficiently as metal does.The concept of heat conductivity (热导率) is not only important in physics but also plays a vital role in engineering and design. Engineers often select materials based on their heat conductivity (热导率) to ensure efficiency and safety in thermal management systems. For instance, in the design of heat sinks for electronic devices, materials with high heat conductivity (热导率) like copper or aluminum are preferred to dissipate heat quickly and prevent overheating.Moreover, in the construction industry, the heat conductivity (热导率) of building materials affects energy efficiency. Insulating materials with low heat conductivity (热导率) help keep buildings warm in winter and cool in summer, reducing the need for heating and cooling systems. This not only saves energy but also contributes to environmental sustainability.In everyday life, we encounter heat conductivity (热导率) in various forms. Cooking utensils, for example, are often made from materials with high heat conductivity (热导率) to ensure even cooking. A good frying pan will distribute heat uniformly, allowing food to cook properly without burning.On the other hand, oven mitts are designed using materials with low heat conductivity (热导率) to protect our hands from hot surfaces. The insulation prevents heat from transferring quickly, allowing us to handle hot dishes safely.In conclusion, heat conductivity (热导率) is a critical property that influences many aspects of our lives, from the materials we choose for construction to the utensils we use in cooking. Understanding this concept helps us make informed decisions about material selection in various applications, ensuring efficiency, safety, and comfort. As technology advances, the study of heat conductivity (热导率) will continue to evolve, leading to innovative solutions that enhance our daily experiences.

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。简单来说，它指的是物质将热能从一个部分转移到另一个部分的能力。具有高热导率（heat conductivity）的材料非常擅长传导热量，而低热导率（heat conductivity）的材料则充当绝缘体。这个属性在各种应用中至关重要，从建筑到电子产品，甚至在日常家居用品中。要理解热导率（heat conductivity），我们首先必须考虑材料的原子结构。例如，金属中的原子紧密排列，允许电子自由移动。这种电子的流动性使得金属具有高热导率（heat conductivity）。当金属棒的一端被加热时，能量迅速通过材料转移，因为激发的电子与邻近的原子碰撞，在此过程中转移它们的能量。相反，木材或塑料等非金属材料具有不同的原子结构。这些材料中的电子不易移动，导致其热导率（heat conductivity）较低。这使得它们适合用作绝缘材料，因为它们减缓了热量的传递。例如，当你触摸一个木质表面时，它在相同温度下感觉比金属表面凉爽，因为木材不会像金属那样有效地将热量从你的皮肤传走。热导率（heat conductivity）的概念不仅在物理学中重要，而且在工程和设计中也发挥着重要作用。工程师通常根据材料的热导率（heat conductivity）选择材料，以确保热管理系统的效率和安全性。例如，在电子设备的散热器设计中，通常选择具有高热导率（heat conductivity）的材料，如铜或铝，以快速散发热量，防止过热。此外，在建筑行业，建筑材料的热导率（heat conductivity）影响能源效率。具有低热导率（heat conductivity）的绝缘材料有助于在冬季保持建筑温暖，在夏季保持凉爽，从而减少对供暖和制冷系统的需求。这不仅节省了能源，还有助于环境可持续性。在日常生活中，我们以各种形式遇到热导率（heat conductivity）。例如，烹饪用具通常由具有高热导率（heat conductivity）的材料制成，以确保均匀烹饪。一口好的煎锅会均匀分配热量，使食物能够正确烹饪而不烧焦。另一方面，烤箱手套采用低热导率（heat conductivity）材料设计，以保护我们的手免受热表面的伤害。绝缘材料可以防止热量迅速传递，使我们能够安全地处理热菜肴。总之，热导率（heat conductivity）是影响我们生活许多方面的关键属性，从我们选择的建筑材料到我们在烹饪中使用的器具。理解这一概念帮助我们在各种应用中做出明智的材料选择，确保效率、安全和舒适。随着技术的进步，对热导率（heat conductivity）的研究将继续发展，带来创新的解决方案，提升我们的日常体验。