latent heat

简明释义

潜热

英英释义

例句

1.When water vapor condenses into liquid, it releases latent heat (潜热), which warms the surrounding air.

当水蒸气凝结为液体时，它释放出潜热，这会使周围空气变暖。

2.The process of melting ice involves the absorption of latent heat (潜热) from the environment.

冰的融化过程涉及从环境中吸收潜热。

3.In meteorology, latent heat (潜热) plays a crucial role in storm formation.

在气象学中，潜热在风暴形成中发挥着至关重要的作用。

4.Understanding latent heat (潜热) is essential for engineers designing heat exchangers.

理解潜热对设计热交换器的工程师至关重要。

5.The latent heat (潜热) of vaporization is what makes boiling water so effective for cooking.

蒸发的潜热使得煮水在烹饪中非常有效。

作文

Latent heat is a fundamental concept in thermodynamics that refers to the amount of energy absorbed or released by a substance during a phase change without changing its temperature. This phenomenon occurs when a substance transitions from one state of matter to another, such as from solid to liquid (melting) or from liquid to gas (vaporization). The term 'latent' comes from the Latin word 'latens', meaning hidden, which aptly describes the energy that is not immediately apparent in the form of temperature change. Understanding latent heat (潜热) is crucial for various scientific and engineering applications, including meteorology, refrigeration, and even cooking.One of the most common examples of latent heat (潜热) is the process of water boiling. When water is heated to its boiling point, it begins to convert into steam. During this transformation, the temperature of the water remains constant at 100 degrees Celsius (at sea level), even though heat continues to be added. This is because the added energy is used to break the hydrogen bonds between water molecules rather than increasing the temperature. The energy required for this process is known as the latent heat of vaporization. Conversely, when steam condenses back into water, it releases the same amount of energy, which is termed the latent heat of condensation.Another significant instance of latent heat (潜热) is seen in the melting of ice. When ice absorbs heat, it reaches its melting point at 0 degrees Celsius. As heat continues to be added, the ice melts into water, yet the temperature of the mixture remains at 0 degrees until all the ice has melted. The energy absorbed during this melting process is referred to as the latent heat of fusion. This concept is particularly important in understanding climate systems, as the melting of polar ice caps and glaciers contributes to global sea-level rise and affects weather patterns.In meteorology, latent heat (潜热) plays an essential role in weather phenomena. For example, when warm air rises, it cools and can lead to condensation, forming clouds. As water vapor condenses into liquid droplets, it releases latent heat (潜热), which warms the surrounding air and can lead to the development of storms. This process is vital for understanding convection currents in the atmosphere and predicting weather changes.Furthermore, the concept of latent heat (潜热) is also applied in refrigeration technology. Refrigerators and air conditioners utilize the principles of latent heat (潜热) to remove heat from the environment. In these systems, a refrigerant absorbs heat from inside the refrigerator as it evaporates, effectively cooling the interior. The refrigerant then releases this heat to the outside environment as it condenses, demonstrating the cyclical nature of latent heat (潜热) in practical applications.In conclusion, latent heat (潜热) is a critical concept that underpins many natural processes and technological applications. From the boiling of water to the melting of ice, and from meteorological phenomena to refrigeration systems, the understanding of latent heat (潜热) allows us to grasp the intricate relationships between energy, temperature, and phase changes. By studying latent heat (潜热), we gain insights into not only physical science but also the environmental challenges we face today, emphasizing the importance of this concept in both theoretical and practical contexts.

潜热是热力学中的一个基本概念，指的是物质在相变过程中吸收或释放的能量，而其温度并不发生变化。这种现象发生在物质从一种物态转变为另一种物态时，例如从固体变为液体（熔化）或从液体变为气体（蒸发）。‘潜’这个词源自拉丁语‘latens’，意为隐藏，这恰如其分地描述了这种能量，它并不立即以温度变化的形式显现。理解潜热（latent heat）对各种科学和工程应用至关重要，包括气象学、制冷技术甚至烹饪。潜热（latent heat）最常见的例子之一是水的沸腾。当水加热到其沸点时，它开始转变为蒸汽。在这一过程中，水的温度保持在100摄氏度（在海平面），即使持续添加热量。这是因为额外的能量用于打破水分子之间的氢键，而不是提高温度。这个过程所需的能量被称为蒸发的潜热（latent heat）。相反，当蒸汽凝结回水时，它释放出相同数量的能量，这被称为凝结的潜热（latent heat）。另一个重要的潜热（latent heat）实例是冰的熔化。当冰吸收热量时，它达到0摄氏度的熔点。随着热量的继续添加，冰融化成水，但混合物的温度仍然保持在0度，直到所有冰都融化为止。在这个熔化过程中吸收的能量称为熔化的潜热（latent heat）。这个概念在理解气候系统时尤其重要，因为极地冰盖和冰川的融化导致全球海平面上升，并影响天气模式。在气象学中，潜热（latent heat）在天气现象中起着重要作用。例如，当暖空气上升时，它会冷却并可能导致凝结，形成云。当水蒸气凝结成液滴时，它释放出潜热（latent heat），从而加热周围的空气，并可能导致风暴的发展。这个过程对于理解大气中的对流气流和预测天气变化至关重要。此外，潜热（latent heat）的概念也应用于制冷技术。冰箱和空调利用潜热（latent heat）原理来从环境中去除热量。在这些系统中，制冷剂在蒸发时吸收来自冰箱内部的热量，有效地冷却内部。然后，制冷剂在凝结时将这部分热量释放到外部环境，展示了潜热（latent heat）在实际应用中的循环性质。总之，潜热（latent heat）是一个关键概念，支撑着许多自然过程和技术应用。从水的沸腾到冰的熔化，从气象现象到制冷系统，理解潜热（latent heat）使我们能够掌握能量、温度和相变之间复杂的关系。通过研究潜热（latent heat），我们不仅能深入了解物理科学，还能认识到我们今天面临的环境挑战，强调了这一概念在理论和实际背景下的重要性。