irreversible engine

简明释义

不能逆转发动机

英英释义

例句

1.The efficiency of an irreversible engine is always less than that of a reversible engine due to inherent losses.

由于固有的损失，不可逆发动机的效率总是低于可逆发动机。

2.The combustion process in a car engine is a classic example of an irreversible engine at work.

汽车发动机中的燃烧过程是不可逆发动机运作的经典例子。

3.In thermodynamics, an irreversible engine is one that cannot operate in a cyclic manner without losing energy.

在热力学中，不可逆发动机是指无法以循环方式运作而不损失能量的发动机。

4.The design of the irreversible engine makes it impossible to return to the initial state once energy has been converted.

这种不可逆发动机的设计使得一旦能量被转换，就不可能返回到初始状态。

5.When studying heat engines, we often refer to the concept of an irreversible engine to highlight practical limitations.

在研究热发动机时，我们经常提到不可逆发动机的概念，以突出实际限制。

作文

The concept of an irreversible engine is a fundamental principle in thermodynamics that refers to a type of engine that cannot return to its original state after performing work. This means that once the energy has been converted into work, it cannot be fully reclaimed or reused. Understanding this concept is crucial for engineers and scientists as they design and analyze various systems. In essence, an irreversible engine operates on the principle that some processes are inherently unidirectional, leading to an increase in entropy, which is a measure of disorder in a system.One of the most common examples of an irreversible engine is the internal combustion engine found in many vehicles. When fuel burns in the engine, it produces energy that propels the vehicle forward. However, once the energy has been expended, it cannot be completely converted back into usable fuel or energy. This inefficiency is a hallmark of all irreversible engines. They operate under specific conditions that lead to energy loss in the form of heat, friction, and other forms of waste.In contrast, reversible engines are theoretical constructs that would operate without any loss of energy. However, in reality, no engine can achieve perfect reversibility due to the second law of thermodynamics, which states that the total entropy of an isolated system can never decrease over time. This law highlights the limitations of energy conversion processes and the inevitability of energy dissipation in the form of heat, sound, or other byproducts.The implications of irreversible engines extend beyond just mechanical systems; they also apply to biological and ecological systems. For instance, living organisms can be viewed as irreversible engines because they consume energy from their environment and convert it into work, such as movement or growth. Once energy is used, it cannot be reclaimed, and this is why sustainability is a critical consideration in environmental science. The energy flow through ecosystems is also subject to the principles governing irreversible engines, where energy is transformed but not recycled completely.Moreover, the study of irreversible engines has led to significant advancements in technology and engineering. For example, researchers are continually looking for ways to improve the efficiency of irreversible engines, such as developing better materials that minimize friction or designing systems that recover waste heat. Innovations like hybrid vehicles and regenerative braking systems are practical applications of these concepts, demonstrating how we can harness some of the lost energy in irreversible engines to improve overall efficiency.In conclusion, the study of irreversible engines is essential for understanding the limitations and capabilities of energy systems. While these engines cannot reclaim all of the energy they consume, advancements in technology continue to push the boundaries of efficiency. By acknowledging the realities of irreversible engines, we can better design systems that respect the laws of thermodynamics while striving for greater sustainability in our energy consumption practices.

不可逆发动机的概念是热力学中的一个基本原理，指的是一种在执行工作后无法返回到其原始状态的发动机。这意味着一旦能量被转化为工作，就无法完全回收或再利用。理解这一概念对工程师和科学家来说至关重要，因为他们在设计和分析各种系统时需要考虑这一点。从本质上讲，不可逆发动机的运作原理是某些过程本质上是单向的，导致熵的增加，熵是衡量系统无序程度的指标。最常见的一个例子是许多车辆中使用的内燃机。当燃料在发动机中燃烧时，会产生推动车辆前进的能量。然而，一旦能量被消耗，就无法完全转化回可用的燃料或能量。这种低效是所有不可逆发动机的标志。它们在特定条件下运行，导致能量以热、摩擦和其他废物的形式损失。相比之下，可逆发动机是理论构造，能够在不损失任何能量的情况下运行。然而，实际上，由于热力学第二定律，没有任何发动机能够实现完全的可逆性，该定律指出孤立系统的总熵随时间推移永远不会减少。这条法则突显了能量转换过程的限制，以及能量以热、声或其他副产品的形式必然会耗散。不可逆发动机的影响不仅限于机械系统；它们同样适用于生物和生态系统。例如，生物有机体可以被视为不可逆发动机，因为它们从环境中消耗能量并将其转化为工作，如运动或生长。一旦能量被使用，就无法回收，这就是为什么可持续性在环境科学中至关重要的原因。能量在生态系统中的流动也受制于不可逆发动机所支配的原则，在这些原则下，能量被转化但不能完全回收。此外，对不可逆发动机的研究促进了技术和工程的重要进步。例如，研究人员不断寻求改善不可逆发动机效率的方法，例如开发减少摩擦的更好材料或设计能够回收废热的系统。混合动力汽车和再生制动系统等创新是这些概念的实际应用，展示了我们如何利用不可逆发动机中一些损失的能量来提高整体效率。总之，研究不可逆发动机对于理解能量系统的限制和能力至关重要。尽管这些发动机无法回收它们消耗的所有能量，但技术的进步仍在不断推动效率的边界。通过承认不可逆发动机的现实，我们可以更好地设计尊重热力学法则的系统，同时努力在我们的能源消费实践中追求更大的可持续性。