adiabatic change

简明释义

绝热变化

英英释义

例句

1.During an adiabatic change 绝热变化, the internal energy of a gas changes solely due to work done on or by the gas.

在 adiabatic change 绝热变化 过程中，气体的内能仅因对气体做功或气体做功而变化。

2.The compression of a gas in a piston can be described as an adiabatic change 绝热变化 if it happens quickly enough to prevent heat transfer.

如果气体在活塞中的压缩发生得足够快以防止热量转移，则可以将其描述为一个 adiabatic change 绝热变化。

3.In meteorology, rising air cools through adiabatic change 绝热变化, which is crucial for cloud formation.

在气象学中，上升的空气通过 adiabatic change 绝热变化 冷却，这对云的形成至关重要。

4.In thermodynamics, an adiabatic change 绝热变化 occurs when a system does not exchange heat with its surroundings.

在热力学中，adiabatic change 绝热变化 是指一个系统与其周围环境不交换热量时发生的变化。

5.An example of an adiabatic change 绝热变化 is the rapid expansion of air when a balloon pops.

一个 adiabatic change 绝热变化 的例子是气球爆炸时空气的快速膨胀。

作文

In the realm of thermodynamics, the concept of adiabatic change plays a crucial role in understanding how systems exchange energy. An adiabatic change refers to a process in which no heat is transferred into or out of a system. This means that any change in the internal energy of the system is solely due to work done on or by the system. The significance of this concept can be seen in various applications, such as in the functioning of heat engines and refrigerators.To illustrate the importance of adiabatic change, consider a gas contained within a cylinder equipped with a piston. If the piston is pushed down rapidly, the gas is compressed without allowing heat to escape. During this rapid compression, the temperature of the gas rises due to the work being done on it. This scenario exemplifies an adiabatic change, as the energy transfer occurs entirely through work rather than heat exchange.The mathematical representation of an adiabatic change often involves the use of the first law of thermodynamics, which states that the change in internal energy (ΔU) is equal to the heat added to the system (Q) minus the work done by the system (W). In an adiabatic change, since there is no heat exchange, we have ΔU = -W. This relationship highlights how the internal energy of a system can change even when heat is not exchanged, emphasizing the unique nature of adiabatic changes.One practical application of adiabatic change can be found in the operation of an ideal gas. When an ideal gas expands adiabatically, it does so by doing work on its surroundings, which results in a decrease in its internal energy and thus a drop in temperature. Conversely, if the gas is compressed adiabatically, its internal energy increases, leading to a rise in temperature. These principles are essential for designing efficient thermal machines and understanding their performance under different conditions.Furthermore, adiabatic changes are not limited to ideal gases. They also apply to real gases under certain conditions, especially when the processes occur quickly enough that heat exchange with the environment is negligible. This characteristic makes adiabatic changes a valuable concept in engineering and physics, particularly in fields such as meteorology, where atmospheric processes often occur at rates that can be approximated as adiabatic.In conclusion, the understanding of adiabatic change is fundamental in the study of thermodynamics and has far-reaching implications in both theoretical and practical applications. By grasping how adiabatic changes affect energy transfer and system behavior, one can better appreciate the intricate balance of energy within various physical systems. Whether it’s in designing more efficient engines or predicting weather patterns, the principles surrounding adiabatic change provide invaluable insights into the natural world and technological advancements.

在热力学领域，绝热变化的概念对于理解系统如何交换能量至关重要。绝热变化指的是一个过程中没有热量转移进出系统。这意味着系统内能的任何变化完全是由于对系统做功或系统所做的功。这个概念的重要性可以在许多应用中看到，例如在热机和冰箱的运行中。为了说明绝热变化的重要性，可以考虑一个气体被容器中的活塞所包围的情形。如果活塞快速下压，气体在不允许热量逸出的情况下被压缩。在这个快速压缩的过程中，由于对气体做功，其温度上升。这个场景展示了一个绝热变化的例子，因为能量转移完全通过做功而不是热交换。绝热变化的数学表示通常涉及到热力学第一定律，该定律指出内能的变化（ΔU）等于加到系统上的热量（Q）减去系统所做的功（W）。在绝热变化中，由于没有热量交换，我们有ΔU = -W。这个关系突显了即使在没有热量交换的情况下，系统的内能也会发生变化，强调了绝热变化的独特性质。绝热变化的一个实际应用可以在理想气体的操作中找到。当理想气体绝热膨胀时，它通过对周围环境做功而扩展，这导致其内能减少，从而温度下降。相反，如果气体绝热压缩，其内能增加，导致温度上升。这些原理对于设计高效的热机械以及理解它们在不同条件下的性能至关重要。此外，绝热变化并不仅限于理想气体。在某些条件下，它们也适用于真实气体，特别是在过程发生得足够快以至于与环境的热交换可以忽略时。这一特性使得绝热变化成为工程和物理学中一个宝贵的概念，尤其是在气象学等领域，气氛过程往往在可以近似为绝热的速率下发生。总之，理解绝热变化在热力学研究中是基础性的，并且在理论和实践应用中具有深远的影响。通过掌握绝热变化如何影响能量转移和系统行为，人们可以更好地理解各种物理系统内的能量平衡。无论是在设计更高效的引擎还是预测天气模式，围绕绝热变化的原理为自然世界和技术进步提供了宝贵的见解。