saturated vapour pressure

简明释义

饱和蒸汽压力

英英释义

例句

1.The saturated vapour pressure of a liquid can be measured using a manometer.

液体的饱和蒸汽压可以通过压力计测量。

2.The saturated vapour pressure of a substance is crucial for designing efficient refrigeration systems.

物质的饱和蒸汽压对于设计高效的制冷系统至关重要。

3.Engineers must consider the saturated vapour pressure when calculating the thermal efficiency of steam turbines.

工程师在计算蒸汽涡轮的热效率时必须考虑饱和蒸汽压。

4.The saturated vapour pressure of water increases with temperature, which means that at higher temperatures, water can hold more vapor.

水的饱和蒸汽压随着温度的升高而增加，这意味着在更高的温度下，水可以容纳更多的蒸汽。

5.In meteorology, understanding the saturated vapour pressure helps predict humidity levels in the atmosphere.

在气象学中，理解饱和蒸汽压有助于预测大气中的湿度水平。

作文

Understanding the concept of saturated vapour pressure is crucial in various fields, including meteorology, engineering, and environmental science. The term refers to the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. In simpler terms, it is the maximum pressure that water vapor can exert when it is in equilibrium with liquid water at a specific temperature. This concept plays a significant role in determining humidity levels, predicting weather patterns, and understanding phase changes in substances.The saturated vapour pressure increases with temperature. This is because higher temperatures provide more energy to the molecules, allowing more of them to escape from the liquid phase into the vapor phase. For instance, at 0 degrees Celsius, the saturated vapour pressure of water is approximately 611 Pa, while at 100 degrees Celsius, it rises to 101325 Pa, which is equivalent to atmospheric pressure. This relationship highlights the importance of temperature in influencing the behavior of water vapor in the atmosphere.In meteorology, the saturated vapour pressure is essential for understanding humidity. Relative humidity is defined as the ratio of the current vapor pressure to the saturated vapour pressure at a given temperature. When the air contains moisture close to its saturated vapour pressure, it feels humid, and when it exceeds this pressure, condensation occurs, leading to cloud formation and precipitation. Therefore, measuring the saturated vapour pressure helps meteorologists predict weather conditions accurately.In engineering, particularly in HVAC (heating, ventilation, and air conditioning) systems, the saturated vapour pressure is vital for designing efficient systems. Engineers must understand how the saturated vapour pressure changes with temperature to ensure that systems can maintain comfortable humidity levels while optimizing energy consumption. Failure to account for these pressures can lead to inefficient systems and uncomfortable indoor environments.Moreover, in environmental science, the saturated vapour pressure is significant in studying the water cycle and climate change. As global temperatures rise due to climate change, the saturated vapour pressure of water also increases, leading to more water vapor in the atmosphere. This can enhance the greenhouse effect, as water vapor is a potent greenhouse gas. Understanding the dynamics of saturated vapour pressure helps scientists model climate scenarios and predict future environmental changes.In summary, the concept of saturated vapour pressure is fundamental across various disciplines. Its implications extend from weather predictions to engineering applications and environmental studies. By grasping this concept, one can better appreciate the intricate balance of forces that govern our atmosphere and the importance of managing these factors in the face of climate change. The study of saturated vapour pressure not only enhances our understanding of physical processes but also equips us with the knowledge necessary to address pressing global challenges related to climate and energy.

理解饱和蒸汽压的概念在气象学、工程学和环境科学等多个领域至关重要。该术语指的是在给定温度下，封闭系统中蒸汽与其凝聚相处于热力学平衡时所施加的压力。简单来说，它是水蒸气在特定温度下与液态水处于平衡时所能施加的最大压力。这个概念在确定湿度水平、预测天气模式和理解物质的相变中发挥着重要作用。饱和蒸汽压随着温度的升高而增加。这是因为较高的温度为分子提供了更多的能量，使得更多的分子能够从液相逃逸到气相。例如，在0摄氏度时，水的饱和蒸汽压约为611帕，而在100摄氏度时，它上升到101325帕，相当于大气压力。这一关系突显了温度在影响水蒸气在大气中行为方面的重要性。在气象学中，饱和蒸汽压对于理解湿度至关重要。相对湿度被定义为当前蒸汽压与给定温度下的饱和蒸汽压的比率。当空气中的水分接近其饱和蒸汽压时，空气会感到潮湿；当超过这一压力时，就会发生冷凝，导致云的形成和降水。因此，测量饱和蒸汽压有助于气象学家准确预测天气条件。在工程学中，尤其是在暖通空调（HVAC）系统中，饱和蒸汽压对设计高效系统至关重要。工程师必须理解饱和蒸汽压如何随温度变化，以确保系统能够在优化能源消耗的同时维持舒适的湿度水平。如果未能考虑这些压力，可能会导致系统效率低下和室内环境不适。此外，在环境科学中，饱和蒸汽压在研究水循环和气候变化中也具有重要意义。随着全球气温因气候变化而上升，水的饱和蒸汽压也会增加，导致大气中水蒸气增多。这可能增强温室效应，因为水蒸气是一种强效的温室气体。理解饱和蒸汽压的动态有助于科学家建模气候情景并预测未来的环境变化。总之，饱和蒸汽压的概念在各个学科中都是基础。其影响范围从天气预测到工程应用，再到环境研究。通过掌握这一概念，人们可以更好地理解支配我们大气的各种力量之间的微妙平衡，以及在气候变化面前管理这些因素的重要性。对饱和蒸汽压的研究不仅增强了我们对物理过程的理解，还使我们具备了解决与气候和能源相关的紧迫全球挑战所需的知识。