transmission of heat

简明释义

传热

英英释义

例句

1.The transmission of heat 热量传导 in metals is generally faster than in plastics.

金属中的热量传导通常比塑料快。

2.The engineers studied the transmission of heat 热量传导 in different materials for better insulation.

工程师们研究了不同材料的热量传导以获得更好的绝缘效果。

3.To improve energy efficiency, it is important to understand the transmission of heat 热量传导 in your home.

为了提高能效，了解您家中的热量传导是很重要的。

4.In winter, we need to reduce the transmission of heat 热量传导 to keep the house warm.

在冬天，我们需要减少热量传导以保持房子的温暖。

5.The design of the building focuses on minimizing the transmission of heat 热量传导 through its walls.

这座建筑的设计重点在于最小化其墙壁的热量传导。

作文

The concept of transmission of heat is fundamental in understanding how energy moves through different materials. In physics, heat transfer occurs through three primary methods: conduction, convection, and radiation. Each of these methods plays a crucial role in our daily lives, from cooking food to heating our homes. Understanding the transmission of heat can help us make better decisions regarding energy efficiency and conservation.Conduction is the process where heat is transferred through direct contact between materials. For example, when you place a metal spoon in a hot pot of soup, the heat from the soup travels into the spoon, warming it up. This is due to the vibration of molecules in the hot soup, which collide with the molecules in the spoon, transferring energy. The efficiency of conduction depends on the material's thermal conductivity; metals, for instance, are excellent conductors, while wood is a poor conductor. This principle can be observed in household items, such as pots and pans, where materials are chosen based on their ability to conduct heat effectively.Convection, on the other hand, involves the movement of fluids (liquids and gases) and the transfer of heat within them. When water is heated in a pot, the warmer, less dense water rises to the top, while the cooler, denser water sinks to the bottom. This creates a continuous circulation pattern known as a convection current. Understanding transmission of heat through convection is essential in various applications, such as designing heating systems or understanding weather patterns. For instance, the way warm air rises and cool air descends contributes to wind patterns and climate variations.Lastly, radiation is the transfer of heat through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to transfer heat; it can occur in a vacuum. The sun warming the Earth is a perfect example of this type of heat transfer. The sun emits energy in the form of infrared radiation, which travels through space and warms the planet. This principle is vital in many technologies, including solar panels and thermal imaging cameras. By grasping the concept of transmission of heat, we can harness energy more effectively and innovate new technologies.In conclusion, the transmission of heat is an essential concept that encompasses conduction, convection, and radiation. Each method of heat transfer has its unique characteristics and applications. By understanding these principles, we can improve our energy efficiency, enhance our understanding of natural phenomena, and develop new technologies that utilize heat transfer. As we face global challenges related to energy consumption and environmental sustainability, a deeper comprehension of the transmission of heat will be invaluable in guiding our efforts towards a more sustainable future.

热量的传递概念在理解能量如何通过不同材料移动方面是基础。在物理学中，热量转移主要通过三种方式发生：导热、对流和辐射。这三种方法在我们的日常生活中发挥着至关重要的作用，从烹饪食物到加热我们的家。理解热量的传递可以帮助我们在能源效率和节约方面做出更好的决策。导热是通过材料之间的直接接触来转移热量的过程。例如，当你把金属勺子放在一锅热汤中时，汤中的热量会传递到勺子上，使其变热。这是因为热汤中分子的振动与勺子中的分子碰撞，转移了能量。导热的效率取决于材料的热导率；例如，金属是很好的导体，而木材则是较差的导体。这一原理可以在家庭用品中观察到，例如锅具和煎锅，其中材料的选择基于其有效导热的能力。另一方面，对流涉及流体（液体和气体）的运动及其内部热量的转移。当水在锅中加热时，温暖的、密度较小的水会上升，而较冷的、密度较大的水则会下沉。这会形成一个称为对流电流的连续循环模式。理解热量的传递通过对流在各种应用中至关重要，例如设计供热系统或理解天气模式。例如，温暖的空气上升和凉爽的空气下沉的方式有助于风的模式和气候变化。最后，辐射是通过电磁波转移热量。与导热和对流不同，辐射不需要介质来转移热量；它可以在真空中发生。太阳温暖地球就是这种热转移类型的完美例子。太阳以红外辐射的形式发出能量，这种辐射穿过太空并温暖地球。这一原理在许多技术中至关重要，包括太阳能电池板和热成像相机。通过掌握热量的传递的概念，我们可以更有效地利用能源，并创新新的技术。总之，热量的传递是一个重要的概念，涵盖了导热、对流和辐射。每种热传递方法都有其独特的特征和应用。通过理解这些原理，我们可以提高能源效率，加深对自然现象的理解，并开发利用热传递的新技术。随着我们面临与能源消耗和环境可持续性相关的全球挑战，更深入地理解热量的传递将在指导我们朝着更可持续的未来努力中变得无价。