transmission of heat

简明释义

热传递

英英释义

例句

1.Insulation materials are designed to reduce the transmission of heat between indoor and outdoor environments.

绝缘材料旨在减少室内和室外环境之间的热量传导。

2.The transmission of heat in metals occurs primarily through conduction.

金属中的热量传导主要通过导热进行。

3.In cooking, the transmission of heat from the stove to the pot is crucial for boiling water.

在烹饪中，炉子到锅的热量传导对煮水至关重要。

4.Understanding the transmission of heat is essential for designing efficient heating systems.

理解热量传导对于设计高效的供热系统至关重要。

5.The transmission of heat through the walls of a building can significantly affect its energy efficiency.

建筑物墙壁的热量传导会显著影响其能效。

作文

The study of heat transfer, commonly referred to as the transmission of heat, is a fundamental concept in physics and engineering. It refers to the process by which thermal energy moves from one object or medium to another. Understanding this phenomenon is crucial for various applications, ranging from designing efficient heating systems to improving energy conservation in buildings.There are three primary modes of transmission of heat: conduction, convection, and radiation. Each mode has its unique characteristics and plays a vital role in different scenarios. Conduction is the process where heat is transferred through direct contact between materials. For instance, when a metal spoon is placed in a hot cup of coffee, the heat from the coffee warms the spoon through transmission of heat via molecular collisions. The efficiency of conduction depends on the material's thermal conductivity; metals, for example, are excellent conductors, while wood and plastic are poor conductors.Convection, on the other hand, involves the movement of fluids (liquids and gases) and is driven by differences in temperature and density. When a pot of water is heated on a stove, the water at the bottom becomes hot and less dense, causing it to rise while cooler, denser water descends. This cycle continues, creating a convection current that facilitates the transmission of heat throughout the entire pot. This principle is not only applicable in cooking but also in atmospheric phenomena and ocean currents.Radiation is the third mode of transmission of heat, which occurs through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to transfer heat. A common example is the warmth felt from sunlight; the sun emits infrared radiation that travels through the vacuum of space and warms the Earth. This principle is essential in understanding how heat is transferred in space and is utilized in various technologies, such as solar panels.In practical applications, the transmission of heat is a critical consideration in building design. Architects and engineers must account for how heat will move through materials to ensure energy efficiency. Insulation materials are used to minimize unwanted heat loss in winter and keep interiors cool in summer. By understanding the principles of transmission of heat, professionals can create structures that maintain comfortable temperatures while reducing energy consumption.Moreover, the transmission of heat plays a significant role in climate control systems. Heating, ventilation, and air conditioning (HVAC) systems rely on these principles to regulate indoor environments. For example, heat pumps exploit the transmission of heat by transferring heat from outside to inside during winter and vice versa during summer.In conclusion, the transmission of heat is a vital concept that underpins many scientific and engineering disciplines. Whether through conduction, convection, or radiation, understanding how heat moves allows us to harness it effectively for various applications. As we continue to innovate and seek more sustainable solutions, mastering the principles of transmission of heat will be essential for future advancements in technology and energy efficiency.

热传递的研究，通常称为热的传输，是物理学和工程学中的一个基本概念。它指的是热能从一个物体或介质转移到另一个物体或介质的过程。理解这一现象对于各种应用至关重要，从设计高效的供热系统到提高建筑的节能效果。热的传输有三种主要模式：导热、对流和辐射。每种模式都有其独特的特性，并在不同的场景中发挥着重要作用。导热是通过材料直接接触传递热量的过程。例如，当一根金属勺子放在热咖啡杯中时，咖啡的热量通过分子碰撞的方式加热勺子。导热的效率取决于材料的热导率；例如，金属是良好的导体，而木材和塑料则是较差的导体。另一方面，对流涉及流体（液体和气体）的运动，由温度和密度差异驱动。当一锅水在炉子上加热时，底部的水变热且密度降低，导致它上升，而较冷、密度较大的水则下降。这个循环持续进行，形成对流电流，促进整锅水的热的传输。这一原理不仅适用于烹饪，还适用于大气现象和海洋洋流。辐射是热的传输的第三种模式，通过电磁波发生。与导热和对流不同，辐射不需要介质来传递热量。一个常见的例子是从阳光中感受到的温暖；太阳发出红外辐射，穿过太空的真空并加热地球。这个原理对于理解热如何在太空中传递至关重要，并被广泛应用于各种技术中，如太阳能电池板。在实际应用中，热的传输是建筑设计中的关键考虑因素。建筑师和工程师必须考虑热量如何通过材料移动，以确保能效。绝缘材料用于最小化冬季的不必要热损失，并在夏季保持室内凉爽。通过理解热的传输的原理，专业人士可以创建维持舒适温度的结构，同时减少能源消耗。此外，热的传输在气候控制系统中也发挥着重要作用。供暖、通风和空调（HVAC）系统依赖于这些原理来调节室内环境。例如，热泵利用热的传输的原理，在冬季将热量从外部转移到内部，而在夏季则反之。总之，热的传输是一个重要的概念，支撑着许多科学和工程学科。无论是通过导热、对流还是辐射，理解热量的移动使我们能够有效地利用它进行各种应用。随着我们不断创新并寻求更可持续的解决方案，掌握热的传输的原理将是未来技术和能源效率进步的关键。