isobaric expansion

简明释义

等压膨胀

英英释义

例句

1.The efficiency of a heat engine can be affected by the isobaric expansion of the working fluid.

热机的效率可能会受到工作流体的等压膨胀的影响。

2.In a closed system, when a gas undergoes isobaric expansion, it expands at constant pressure while absorbing heat.

在一个封闭系统中，当气体经历等压膨胀时，它在吸收热量的同时以恒定压力膨胀。

3.The isobaric expansion of air in a balloon allows it to rise as it becomes less dense than the surrounding air.

气球中空气的等压膨胀使其上升，因为它的密度变得比周围空气小。

4.During isobaric expansion, the work done by the system can be calculated using the formula W = PΔV.

在等压膨胀过程中，系统所做的功可以通过公式W = PΔV计算。

5.In thermodynamics, isobaric expansion is often discussed in relation to the first law of thermodynamics.

在热力学中，等压膨胀通常与热力学第一定律相关讨论。

作文

In the study of thermodynamics, one of the fundamental processes that describe how gases behave under various conditions is known as isobaric expansion. This term refers to a specific type of thermodynamic process where a gas expands at constant pressure. Understanding this concept is essential for both students and professionals in fields such as physics, engineering, and environmental science. During isobaric expansion, the pressure of the gas remains unchanged while its volume increases. This can occur when heat is added to the system, causing the gas molecules to gain energy and move apart from each other. As the temperature rises, the gas expands, doing work on its surroundings. This process can be visualized by imagining a piston in a cylinder filled with gas. When heat is applied to the gas, it pushes the piston outward, allowing the gas to expand while maintaining a constant pressure.One important equation associated with isobaric expansion is the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. Mathematically, this can be expressed as: ΔU = Q - W Where ΔU represents the change in internal energy, Q is the heat added to the system, and W is the work done by the system. In the case of isobaric expansion, the work done by the gas can be calculated using the formula: W = PΔV Here, P is the constant pressure and ΔV is the change in volume. This relationship highlights the significance of pressure in determining the behavior of gases during expansion.The concept of isobaric expansion is not only theoretical but has practical applications in real-world scenarios. For instance, it plays a crucial role in understanding how engines operate. In an internal combustion engine, the combustion of fuel generates heat, which causes the gases within the cylinder to expand. This expansion occurs at nearly constant pressure during the power stroke, allowing the engine to perform work efficiently.Moreover, isobaric expansion is also relevant in meteorology. The behavior of air masses in the atmosphere can be analyzed through this process. For example, when warm air rises, it expands and cools, leading to changes in weather patterns. Understanding these dynamics helps meteorologists predict weather changes and phenomena such as storms and hurricanes.In conclusion, isobaric expansion is a key concept in thermodynamics that illustrates how gases behave under constant pressure conditions. By grasping this principle, individuals can better understand the underlying mechanisms of various physical systems, from engines to atmospheric processes. As we continue to explore the intricacies of science, the importance of concepts like isobaric expansion becomes increasingly evident, highlighting the interconnectedness of different disciplines and their relevance to our daily lives.

在热力学研究中，描述气体在各种条件下行为的基本过程之一被称为等压膨胀。这个术语指的是一种特定类型的热力学过程，其中气体在恒定压力下膨胀。理解这个概念对于物理、工程和环境科学等领域的学生和专业人士至关重要。在等压膨胀过程中，气体的压力保持不变，而其体积增加。这可以发生在向系统添加热量时，导致气体分子获得能量并相互远离。当温度升高时，气体膨胀，对周围环境做功。这个过程可以通过想象一个装有气体的气缸中的活塞来可视化。当对气体施加热量时，它推动活塞向外移动，使气体在保持恒定压力的同时膨胀。与等压膨胀相关的重要方程是热力学第一定律，该定律指出，系统内能的变化等于加到系统上的热量减去系统所做的功。数学上，这可以表示为：ΔU = Q - W其中ΔU代表内能的变化，Q是加到系统上的热量，W是系统所做的功。在等压膨胀的情况下，气体所做的功可以使用以下公式计算：W = PΔV这里，P是恒定压力，ΔV是体积变化。这种关系突显了压力在决定气体膨胀行为中的重要性。等压膨胀的概念不仅是理论上的，还有实际应用于现实场景。例如，它在理解发动机的工作原理中起着关键作用。在内燃机中，燃料的燃烧产生热量，导致气缸内的气体膨胀。这种膨胀在动力冲程期间几乎在恒定压力下发生，使发动机能够高效地执行工作。此外，等压膨胀在气象学中也很相关。大气中空气团的行为可以通过这个过程进行分析。例如，当暖空气上升时，它膨胀并冷却，从而导致天气模式的变化。理解这些动态有助于气象学家预测天气变化和风暴、飓风等现象。总之，等压膨胀是热力学中的一个关键概念，说明气体在恒定压力条件下的行为。通过掌握这一原理，个人可以更好地理解各种物理系统的基本机制，从发动机到大气过程。随着我们继续探索科学的复杂性，像等压膨胀这样的概念的重要性变得愈发明显，突显了不同学科之间的相互联系及其与我们日常生活的相关性。