double expansion engine

简明释义

双胀式蒸汽机

英英释义

例句

1.The ship was powered by a double expansion engine, which allowed it to travel faster than its competitors.

这艘船由双膨胀发动机驱动，使其能够比竞争对手行驶得更快。

2.The double expansion engine was a significant advancement in marine technology during the 19th century.

在19世纪，双膨胀发动机是海洋技术的一项重大进步。

3.Many vintage boats are equipped with a double expansion engine for authenticity and performance.

许多老式船只配备了双膨胀发动机，以保证真实性和性能。

4.In the museum, there is a restored double expansion engine on display, showcasing its intricate mechanics.

在博物馆里，有一台修复好的双膨胀发动机展出，展示了它复杂的机械结构。

5.Engineers studied the double expansion engine design to improve efficiency in modern steam locomotives.

工程师们研究了双膨胀发动机的设计，以提高现代蒸汽机车的效率。

作文

The evolution of steam engines has played a crucial role in the development of modern transportation and industry. Among various types of steam engines, the double expansion engine stands out for its efficiency and innovative design. This engine type utilizes two cylinders to extract energy from steam in two stages, thereby maximizing the conversion of thermal energy into mechanical work. The first cylinder uses high-pressure steam, while the second cylinder operates with low-pressure steam that has already passed through the first cylinder. This process not only enhances the overall efficiency of the engine but also minimizes waste by effectively utilizing the energy present in the steam.The double expansion engine was particularly significant during the late 19th and early 20th centuries when industries were rapidly advancing. It was widely used in marine propulsion, where the demand for efficient and powerful engines was paramount. Ships equipped with double expansion engines could travel longer distances without needing to refuel, making them ideal for long voyages across oceans. The improved fuel efficiency allowed shipping companies to reduce operational costs and increase profitability.In addition to maritime applications, the double expansion engine found its way into various industrial settings. Factories began to adopt this technology to power machinery, which contributed to the Industrial Revolution's momentum. The ability to harness steam power more effectively transformed production processes, leading to higher output and lower costs. This innovation paved the way for further advancements in engineering and technology, as engineers sought to improve upon the designs of existing engines.One of the notable features of the double expansion engine is its ability to operate at high efficiency over a wide range of loads. This characteristic made it versatile and suitable for different applications, from powering locomotives to driving large compressors. The design also allowed for smoother operation, which was particularly important for marine vessels that required stability and reliability in rough waters.However, the rise of internal combustion engines in the mid-20th century led to a decline in the use of double expansion engines. While these engines were revolutionary for their time, they could not compete with the compactness and power-to-weight ratio of gasoline and diesel engines. Nevertheless, the principles behind the double expansion engine continue to influence modern engineering. Many concepts related to thermodynamics and energy efficiency that were developed during the era of steam power are still relevant today.In conclusion, the double expansion engine represents a significant milestone in the history of engineering and technology. Its innovative design and efficient operation marked a turning point in how steam power was utilized, leading to advancements in transportation and industry. Although it may not be as common in contemporary applications, the legacy of the double expansion engine lives on in the principles that guide modern engineering practices. Understanding this engine's impact helps us appreciate the technological progress we enjoy today, rooted in the innovations of the past.

蒸汽机的发展在现代交通和工业的发展中发挥了至关重要的作用。在各种类型的蒸汽机中，双扩张机因其高效和创新的设计而脱颖而出。这种发动机类型利用两个气缸在两个阶段提取蒸汽的能量，从而最大限度地提高热能转化为机械工作的效率。第一个气缸使用高压蒸汽，而第二个气缸则使用已经通过第一个气缸的低压蒸汽。这一过程不仅提高了发动机的整体效率，还通过有效利用蒸汽中的能量来最小化浪费。双扩张机在19世纪末和20世纪初特别重要，当时工业快速发展。它被广泛应用于海洋推进，那里对高效且强大的发动机的需求至关重要。配备双扩张机的船只可以在不需要加油的情况下行驶更长的距离，使它们成为跨越海洋的长途航行的理想选择。改善的燃料效率使航运公司能够降低运营成本并增加盈利能力。除了海洋应用外，双扩张机还进入了各种工业环境。工厂开始采用这项技术来驱动机械，这为工业革命的动力做出了贡献。更有效地利用蒸汽动力的能力改变了生产过程，导致产量提高和成本降低。这一创新为工程和技术的进一步进步铺平了道路，因为工程师们寻求改进现有发动机的设计。双扩张机的一个显著特点是其在广泛负载范围内高效运行的能力。这一特性使其多功能且适合不同应用，从驱动机车到大型压缩机。该设计还允许更平稳的操作，这对需要在恶劣水域中保持稳定性和可靠性的海洋船只尤为重要。然而，20世纪中叶内燃机的崛起导致了双扩张机使用的下降。虽然这些发动机在当时是革命性的，但它们无法与汽油和柴油发动机的紧凑性和功率重量比竞争。然而，双扩张机背后的原理继续影响现代工程。许多在蒸汽动力时代开发的与热力学和能效相关的概念在今天仍然具有相关性。总之，双扩张机代表了工程和技术历史上的一个重要里程碑。其创新设计和高效运行标志着蒸汽动力利用方式的转折点，促进了交通和工业的进步。尽管在当代应用中可能不那么常见，但双扩张机的遗产在指导现代工程实践的原则中得以延续。理解这种发动机的影响有助于我们欣赏今天所享有的技术进步，这些进步根植于过去的创新。