thermal diffusivity

简明释义

热扩散系数

英英释义

例句

1.Researchers measured the thermal diffusivity of various building materials to improve energy efficiency.

研究人员测量了各种建筑材料的热扩散率以提高能效。

2.The thermal diffusivity of metals is generally higher than that of plastics, making them better conductors of heat.

金属的热扩散率通常高于塑料，使它们成为更好的热导体。

3.The thermal diffusivity of the material affects how quickly it can respond to temperature changes.

材料的热扩散率影响它对温度变化的反应速度。

4.A lower thermal diffusivity means that a material will retain heat longer.

较低的热扩散率意味着材料将更长时间保持热量。

5.In engineering, knowing the thermal diffusivity of a substance is crucial for heat transfer calculations.

在工程中，知道物质的热扩散率对于热传递计算至关重要。

作文

Thermal diffusivity is a crucial property in the study of heat transfer and material science. It defines how quickly a material can conduct thermal energy relative to its ability to store that energy. In simpler terms, it is a measure of how fast heat spreads through a material. The concept of thermal diffusivity (热扩散率) is particularly important in various applications, including engineering, meteorology, and even cooking. Understanding this property can help us design better materials and improve processes that involve heat transfer.To grasp the significance of thermal diffusivity (热扩散率), we must first look at the formula used to calculate it. The formula is given by: α = k / (ρ * c) where α represents the thermal diffusivity (热扩散率), k is the thermal conductivity of the material, ρ is the density, and c is the specific heat capacity. Each of these factors plays a vital role in determining how quickly heat can pass through a substance.For instance, materials with high thermal diffusivity (热扩散率) can quickly transfer heat, making them ideal for applications requiring rapid heat exchange. Metals like copper and aluminum are excellent examples; they have high thermal diffusivity and are commonly used in heat sinks and cooking utensils. On the other hand, materials with low thermal diffusivity (热扩散率), such as wood or certain types of insulation, are effective at retaining heat, making them suitable for thermal insulation purposes.In practical scenarios, understanding thermal diffusivity (热扩散率) can significantly influence how we approach various tasks. For example, in construction, choosing materials with appropriate thermal properties can lead to energy-efficient buildings. If the walls of a house are made from materials with low thermal diffusivity (热扩散率), they will help maintain a stable indoor temperature, reducing the need for heating or cooling systems.In the field of meteorology, thermal diffusivity (热扩散率) can also play a role in understanding climate patterns. Soil, for instance, has unique thermal properties that affect how heat is absorbed and released during different seasons. By studying the thermal diffusivity (热扩散率) of soil, scientists can predict how temperatures will change in agricultural areas, which can impact crop yields.Furthermore, in the culinary world, the concept of thermal diffusivity (热扩散率) is essential for chefs and food scientists. When cooking, the heat transfer within food items affects texture and flavor. Understanding how different materials conduct heat allows chefs to optimize cooking times and methods, ensuring that food is cooked evenly and retains its desired qualities.In conclusion, thermal diffusivity (热扩散率) is a fundamental property that influences many aspects of our daily lives, from the materials we use in construction to the way we cook our meals. By understanding and applying the principles of thermal diffusivity (热扩散率), we can enhance efficiency in various fields and improve our interactions with the physical world. As technology advances, the importance of mastering concepts like thermal diffusivity (热扩散率) will continue to grow, leading to innovations that benefit society as a whole.

热扩散率是热传递和材料科学研究中的一个关键特性。它定义了材料相对于其储存热能的能力，能够多快地导热。简单来说，它是热量在材料中传播的速度的度量。thermal diffusivity（热扩散率）的概念在工程、气象甚至烹饪等各种应用中尤其重要。理解这一特性可以帮助我们设计更好的材料，并改善涉及热传递的过程。为了理解thermal diffusivity（热扩散率）的重要性，我们首先要看看计算它的公式。该公式为：α = k / (ρ * c)其中α表示thermal diffusivity（热扩散率），k是材料的热导率，ρ是密度，c是比热容。每个因素在决定热量通过物质的速度方面都发挥着至关重要的作用。例如，具有高thermal diffusivity（热扩散率）的材料可以快速传递热量，使其成为需要快速热交换的应用的理想选择。铜和铝等金属就是优秀的例子；它们具有高热扩散率，常用于散热器和炊具。另一方面，具有低thermal diffusivity（热扩散率）的材料，如木材或某些类型的绝缘材料，能够有效地保持热量，使其适合用于热绝缘目的。在实际场景中，理解thermal diffusivity（热扩散率）可以显著影响我们处理各种任务的方式。例如，在建筑中，选择具有适当热特性的材料可以导致节能建筑。如果房屋的墙壁由具有低thermal diffusivity（热扩散率）的材料制成，它们将有助于维持稳定的室内温度，从而减少对供暖或制冷系统的需求。在气象学领域，thermal diffusivity（热扩散率）也可以在理解气候模式中发挥作用。例如，土壤具有独特的热特性，影响热量在不同季节的吸收和释放。通过研究土壤的thermal diffusivity（热扩散率），科学家可以预测农业地区的温度变化，这可能影响作物产量。此外，在烹饪世界中，thermal diffusivity（热扩散率）的概念对厨师和食品科学家至关重要。在烹饪时，食物内部的热传递会影响质地和风味。理解不同材料如何导热使厨师能够优化烹饪时间和方法，确保食物均匀烹饪并保持其所需的品质。总之，thermal diffusivity（热扩散率）是一个基本特性，影响我们日常生活的许多方面，从我们在建筑中使用的材料到我们烹饪的食物。通过理解和应用thermal diffusivity（热扩散率）的原理，我们可以提高各个领域的效率，并改善我们与物理世界的互动。随着技术的进步，掌握像thermal diffusivity（热扩散率）这样的概念的重要性将继续增长，导致造福整个社会的创新。