heat conductivity

简明释义

导热系数

英英释义

例句

1.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。

2.Different alloys can have varying heat conductivity properties, affecting their suitability for specific applications.

不同的合金可能具有不同的热导率特性，从而影响其在特定应用中的适用性。

3.The heat conductivity of water is crucial for regulating temperatures in aquatic environments.

水的热导率对调节水生环境中的温度至关重要。

4.When designing a heat exchanger, engineers must consider the heat conductivity of the materials used.

在设计热交换器时，工程师必须考虑所用材料的热导率。

5.Insulation materials have low heat conductivity to reduce energy loss.

绝缘材料具有低热导率以减少能量损失。

作文

Heat is a form of energy that can be transferred from one material to another. The ability of a material to conduct heat is known as heat conductivity, which is a crucial property in various fields, including engineering, construction, and materials science. Understanding heat conductivity is essential for designing efficient thermal systems, whether it be for buildings, electronic devices, or industrial processes.Materials with high heat conductivity are often metals, such as copper and aluminum. These materials allow heat to flow through them easily, making them ideal for applications where rapid heat transfer is necessary. For instance, in cooking, pots and pans made from materials with high heat conductivity can quickly transfer heat from the stove to the food, ensuring even cooking. In contrast, materials with low heat conductivity, like wood or plastic, are used in insulation applications. Insulators slow down the transfer of heat, helping to maintain desired temperatures in buildings and appliances.The measurement of heat conductivity is typically expressed in watts per meter-kelvin (W/m·K). This unit quantifies how much heat energy passes through a material over a specific distance when there is a temperature difference. A higher value indicates a better ability to conduct heat. For example, the heat conductivity of copper is approximately 400 W/m·K, whereas that of polystyrene foam is around 0.03 W/m·K. This stark difference illustrates why metals are favored for heat transfer applications, while insulators are chosen for their ability to resist heat flow.In the context of climate control, understanding heat conductivity is vital for optimizing energy efficiency in buildings. Architects and engineers must consider the heat conductivity of building materials when designing structures. For example, using materials with low heat conductivity for walls and roofs can help reduce the amount of heat lost during winter or gained during summer, leading to lower energy consumption for heating and cooling.Moreover, in electronics, managing heat conductivity is crucial for maintaining device performance and longevity. Electronic components generate heat during operation, and if this heat is not dissipated effectively, it can lead to overheating and failure. Therefore, engineers often use materials with high heat conductivity for heat sinks, which are designed to draw heat away from sensitive components, ensuring they operate within safe temperature ranges.In conclusion, heat conductivity is a fundamental property that influences how heat is transferred through materials. Its implications stretch across various industries, from construction to electronics. By understanding and utilizing heat conductivity, we can create more efficient systems that save energy and enhance performance. As technology continues to evolve, the importance of selecting materials based on their heat conductivity will only grow, paving the way for innovations that prioritize energy efficiency and sustainability.

热是一种能量，可以从一种材料转移到另一种材料。材料传导热量的能力被称为热导率，这是在工程、建筑和材料科学等多个领域中至关重要的特性。理解热导率对于设计高效的热系统至关重要，无论是用于建筑、电子设备还是工业过程。具有高热导率的材料通常是金属，如铜和铝。这些材料允许热量轻松流过，使它们成为快速传递热量所需应用的理想选择。例如，在烹饪中，使用高热导率材料制成的锅具可以迅速将热量从炉子转移到食物上，确保均匀烹饪。相反，具有低热导率的材料，如木材或塑料，则用于绝缘应用。绝缘体减缓热量的传递，有助于在建筑物和电器中保持所需的温度。热导率的测量通常以瓦特每米-开尔文（W/m·K）表示。这个单位量化了在存在温差的情况下，多少热能通过材料在特定距离内传递。更高的值表明更好的导热能力。例如，铜的热导率约为400 W/m·K，而聚苯乙烯泡沫的热导率约为0.03 W/m·K。这种显著的差异说明了为什么金属在热传递应用中受到青睐，而绝缘体则因其抵抗热流的能力而被选择。在气候控制的背景下，理解热导率对于优化建筑的能源效率至关重要。建筑师和工程师在设计结构时必须考虑建筑材料的热导率。例如，使用低热导率材料作为墙壁和屋顶可以帮助减少冬季热量的损失或夏季热量的增加，从而降低供暖和制冷的能耗。此外，在电子产品中，管理热导率对于维护设备的性能和寿命至关重要。电子元件在工作期间会产生热量，如果这些热量没有有效散发，可能导致过热和故障。因此，工程师通常使用具有高热导率的材料作为散热器，这些散热器旨在将热量从敏感组件中抽走，确保它们在安全的温度范围内运行。总之，热导率是影响热量如何通过材料传递的基本特性。它的影响跨越多个行业，从建筑到电子产品。通过理解和利用热导率，我们可以创造出更高效的系统，节省能源并提高性能。随着技术的不断发展，基于热导率选择材料的重要性只会增加，为优先考虑能源效率和可持续性的创新铺平道路。