thermal energy

简明释义

热能

英英释义

例句

1.The sun produces vast amounts of thermal energy 热能, which warms the Earth.

太阳产生大量的热能热能，使地球变暖。

2.The thermal energy 热能 produced by a campfire can be used for cooking and warmth.

篝火产生的热能热能可以用于烹饪和取暖。

3.Insulation helps to retain thermal energy 热能 in buildings during winter.

绝缘材料帮助在冬季保持建筑物内的热能热能。

4.When you boil water, you are adding thermal energy 热能 to increase its temperature.

当你煮水时，你是在添加热能热能以提高其温度。

5.In a geothermal power plant, thermal energy 热能 from underground hot water is converted into electricity.

在地热电站中，来自地下热水的热能热能被转换为电能。

作文

Thermal energy is a fundamental concept in physics that refers to the internal energy present in a system due to its temperature. It is the energy that comes from the temperature of matter. All matter is made up of atoms and molecules, which are in constant motion. The faster these particles move, the higher the temperature and the more thermal energy (热能) the substance possesses. Understanding thermal energy (热能) is crucial for various scientific and engineering applications, including thermodynamics, heat transfer, and energy conservation.One of the most significant aspects of thermal energy (热能) is its role in heat transfer processes. Heat can be transferred in three ways: conduction, convection, and radiation. Conduction occurs when heat is transferred through direct contact between materials. For example, if you place a metal spoon in a hot cup of coffee, the heat from the coffee will transfer to the spoon through conduction, increasing the spoon's thermal energy (热能).Convection, on the other hand, involves the movement of fluids. When water is heated, it expands and becomes less dense, causing it to rise while cooler, denser water sinks. This movement creates a convection current, which effectively transfers thermal energy (热能) throughout the fluid. This principle is not only important in cooking but also in weather patterns and ocean currents.Radiation is the transfer of heat through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium; it can occur in a vacuum. The sun warms the Earth through radiation, as solar energy travels through the vacuum of space and increases the Earth's thermal energy (热能). This process is vital for life on our planet.In everyday life, we encounter thermal energy (热能) in numerous contexts. For instance, when we cook food, we apply heat, which increases the thermal energy (热能) of the ingredients, causing chemical reactions that transform them into delicious meals. Similarly, when we turn on a heater during winter, it generates thermal energy (热能) that warms our living spaces, making them comfortable.The concept of thermal energy (热能) is also essential in understanding energy efficiency and conservation. In many modern appliances, such as refrigerators and air conditioners, the goal is to manage thermal energy (热能) effectively to minimize energy consumption. By optimizing how thermal energy (热能) is transferred and utilized, we can reduce waste and lower our environmental impact.Furthermore, advancements in technology have led to innovative methods for harnessing thermal energy (热能). For instance, solar thermal energy systems capture sunlight and convert it into usable thermal energy (热能) for heating water or generating electricity. This renewable energy source demonstrates how understanding thermal energy (热能) can lead to sustainable practices.In conclusion, thermal energy (热能) is an integral part of our understanding of the physical world. From the basic principles of heat transfer to its applications in daily life and technology, thermal energy (热能) plays a crucial role. By grasping the concept of thermal energy (热能), we can better appreciate the science behind everyday phenomena and contribute to more efficient and sustainable energy practices.

热能是物理学中的一个基本概念，指的是由于温度而存在于系统中的内部能量。它是来自物质温度的能量。所有物质都是由原子和分子组成的，这些原子和分子处于不断运动之中。这些粒子运动得越快，温度就越高，物质所拥有的热能（thermal energy）也就越多。理解热能（thermal energy）对于各种科学和工程应用至关重要，包括热力学、热传递和能源保护。热能（thermal energy）的一个重要方面是它在热传递过程中的作用。热量可以通过三种方式转移：导热、对流和辐射。导热发生在材料之间直接接触时。当你把金属勺子放入热咖啡中时，咖啡的热量将通过导热转移到勺子上，从而增加勺子的热能（thermal energy）。另一方面，对流涉及流体的运动。当水被加热时，它会膨胀并变得密度较小，导致它上升，而较冷、密度较大的水则下降。这种运动形成了对流电流，有效地在流体中转移热能（thermal energy）。这一原理不仅在烹饪中重要，而且在天气模式和海洋洋流中也同样适用。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；它可以在真空中发生。太阳通过辐射加热地球，因为太阳能通过太空的真空传播并增加地球的热能（thermal energy）。这个过程对我们星球上的生命至关重要。在日常生活中，我们在许多场合都能遇到热能（thermal energy）。例如，当我们烹饪食物时，我们施加热量，这增加了食材的热能（thermal energy），导致化学反应，使其转变为美味的餐点。同样，当我们在冬天打开加热器时，它产生的热能（thermal energy）使我们的居住空间变暖，使其变得舒适。热能（thermal energy）这一概念在理解能效和节能方面也至关重要。在许多现代设备中，如冰箱和空调，其目标是有效管理热能（thermal energy），以最小化能源消耗。通过优化热能（thermal energy）的转移和利用，我们可以减少浪费，降低对环境的影响。此外，技术的进步使我们能够创新性地利用热能（thermal energy）。例如，太阳能热能系统捕获阳光并将其转化为可用的热能（thermal energy），用于加热水或发电。这一可再生能源源表明，理解热能（thermal energy）可以带来可持续的实践。总之，热能（thermal energy）是我们理解物理世界的重要组成部分。从热传递的基本原理到其在日常生活和技术中的应用，热能（thermal energy）发挥着至关重要的作用。通过掌握热能（thermal energy）的概念，我们可以更好地欣赏日常现象背后的科学，并为更高效和可持续的能源实践做出贡献。