latent heat of sublimation

简明释义

升华热

英英释义

例句

1.In meteorology, understanding the latent heat of sublimation (升华的潜热) helps predict weather patterns involving snow and ice.

在气象学中，理解升华的潜热（升华的潜热）有助于预测涉及雪和冰的天气模式。

2.The process of dry ice turning into gas involves the latent heat of sublimation (升华的潜热), which absorbs heat from the surroundings.

干冰变成气体的过程涉及到升华的潜热（升华的潜热），它从周围环境中吸收热量。

3.The latent heat of sublimation (升华的潜热) is crucial for calculating energy changes in phase transitions.

计算相变中的能量变化时，升华的潜热（升华的潜热）是至关重要的。

4.Scientists study the latent heat of sublimation (升华的潜热) to improve our understanding of climate change effects on glaciers.

科学家研究升华的潜热（升华的潜热）以提高我们对气候变化对冰川影响的理解。

5.When snow melts and then evaporates, the latent heat of sublimation (升华的潜热) plays a significant role in the energy balance.

当雪融化然后蒸发时，升华的潜热（升华的潜热）在能量平衡中起着重要作用。

作文

The concept of latent heat of sublimation is an essential aspect of thermodynamics, particularly in the study of phase changes in substances. Sublimation refers to the process where a solid transforms directly into a gas without passing through the liquid phase. This phenomenon occurs under specific conditions, typically at low pressure and high temperature. Understanding the latent heat of sublimation helps us comprehend the energy changes involved during this transition. When a solid, such as dry ice (solid carbon dioxide), sublimates, it absorbs energy from its surroundings. This energy is known as the latent heat of sublimation, which is the amount of heat required to convert a unit mass of the solid into gas at constant temperature and pressure. For instance, the latent heat of sublimation for dry ice is approximately 571 kJ/kg. This means that for every kilogram of dry ice that sublimates, 571 kilojoules of energy are absorbed from the environment.This principle has practical applications in various fields, including meteorology, refrigeration, and even culinary arts. In meteorology, understanding the latent heat of sublimation can help explain phenomena such as frost formation and the behavior of snow in different temperatures. When snow sublimates, it can lead to a decrease in humidity in the air, significantly affecting local weather patterns.In refrigeration systems, the latent heat of sublimation is utilized in freeze-drying processes, where food items are frozen and then subjected to low pressure, allowing them to sublime. This method preserves the food while maintaining its nutritional value and flavor, making it a preferred choice for long-term storage.Moreover, in the culinary world, chefs often use dry ice to create unique presentations or to keep items frozen during transportation. Understanding the latent heat of sublimation allows them to manipulate dry ice effectively, ensuring that the food remains at the desired temperature without compromising its quality.In summary, the latent heat of sublimation is a crucial concept that plays a significant role in various scientific and practical applications. Its understanding not only enhances our knowledge of phase transitions but also enables us to harness this energy change for innovative uses in everyday life. As we continue to explore the properties and behaviors of different materials, the importance of concepts like the latent heat of sublimation becomes increasingly evident, showcasing the intricate connections between energy, matter, and the environment.

“潜热升华”是热力学中的一个重要概念，特别是在研究物质相变时。升华是指固体直接转变为气体而不经过液态的过程。这一现象通常在低压和高温下发生。理解“潜热升华”有助于我们理解这一转变过程中涉及的能量变化。当固体（例如干冰，即固态二氧化碳）升华时，它从周围环境中吸收能量。这种能量被称为“潜热升华”，即在恒定温度和压力下，将单位质量的固体转化为气体所需的热量。例如，干冰的“潜热升华”约为571 kJ/kg。这意味着每升华1千克干冰，就会从环境中吸收571千焦耳的能量。这一原理在多个领域具有实际应用，包括气象学、制冷和烹饪艺术。在气象学中，理解“潜热升华”可以帮助解释霜的形成以及不同温度下雪的行为。当雪升华时，会导致空气湿度下降，显著影响局部天气模式。在制冷系统中，“潜热升华”被用于冷冻干燥工艺，其中食品被冷冻，然后在低压下处理，使其升华。这种方法在保持食品营养价值和风味的同时保存了食品，使其成为长期储存的首选。此外，在烹饪领域，厨师们常常使用干冰来创造独特的展示效果或在运输过程中保持食品冷冻。理解“潜热升华”使他们能够有效地操作干冰，确保食品保持在所需的温度而不影响其质量。总之，“潜热升华”是一个关键概念，在各种科学和实际应用中发挥着重要作用。它的理解不仅增强了我们对相变的知识，而且使我们能够利用这种能量变化进行创新性的日常生活应用。随着我们继续探索不同材料的性质和行为，“潜热升华”等概念的重要性愈发明显，展示了能量、物质和环境之间的复杂联系。