external combustion engine

简明释义

外燃发动机(一般指蒸汽机

英英释义

例句

1.Many power plants utilize an external combustion engine to convert thermal energy into mechanical energy.

许多发电厂利用外燃机将热能转化为机械能。

2.The steam train operates using an external combustion engine, which uses steam produced outside the engine to drive the pistons.

这列蒸汽火车使用的是外燃机，它利用在发动机外部产生的蒸汽来驱动活塞。

3.In a typical external combustion engine, fuel is burned in a furnace, and the heat is transferred to a working fluid.

在典型的外燃机中，燃料在炉中燃烧，热量被转移到工作流体。

4.An external combustion engine can be more environmentally friendly than an internal combustion engine because it can use renewable fuels.

与内燃机相比，外燃机可以更环保，因为它可以使用可再生燃料。

5.The efficiency of an external combustion engine can be affected by the type of fuel used.

使用的燃料类型会影响外燃机的效率。

作文

The concept of an external combustion engine is a fascinating one that has played a significant role in the development of various technologies. Unlike internal combustion engines, which burn fuel within the engine itself, an external combustion engine operates by burning fuel outside of the engine to produce heat. This heat is then used to create steam or gas that drives a piston or turbine, ultimately converting thermal energy into mechanical energy.Historically, external combustion engines were widely used in steam locomotives and ships, where coal or wood was burned in a boiler to generate steam. This steam would then be channeled into cylinders, pushing pistons that turned the wheels or propellers. The efficiency and power of these engines made them indispensable during the Industrial Revolution, facilitating transportation and manufacturing on an unprecedented scale.One of the most notable examples of an external combustion engine is the steam engine, which was developed in the late 17th century and refined over the following centuries. The steam engine's ability to convert heat from burning fuel into work revolutionized industries and economies around the world. Today, while internal combustion engines dominate the automotive industry, external combustion engines still find applications in certain niches, such as in power plants where they can be more efficient when using diverse fuels, including biomass and waste materials.In addition to their historical significance, external combustion engines also offer some environmental advantages. Since they can utilize a variety of fuels, including renewable sources, they have the potential to reduce reliance on fossil fuels. For instance, a biomass-fired external combustion engine can help in converting agricultural waste into energy, thus promoting sustainability.Moreover, external combustion engines tend to operate at lower temperatures than their internal counterparts, which can lead to less wear and tear over time. This durability can result in lower maintenance costs and a longer lifespan for the engine. However, they also come with challenges, such as the need for a more complex infrastructure to manage the combustion process and the associated emissions.As we look towards the future, the role of external combustion engines may evolve further. With advancements in technology, researchers are exploring more efficient designs and alternative fuels that could enhance the performance of these engines. Additionally, as the world shifts towards greener energy solutions, external combustion engines might regain popularity in specific sectors, especially in regions that prioritize sustainable practices.In conclusion, understanding the mechanics and implications of external combustion engines provides insight into both historical and contemporary energy systems. While they may not be as prevalent in everyday applications as internal combustion engines, their unique characteristics and potential for sustainable energy solutions make them a topic worthy of exploration. The legacy of external combustion engines continues to influence modern engineering and environmental strategies, reminding us of the importance of innovation in our pursuit of energy efficiency and sustainability.

外燃机的概念是一个迷人的主题，在各种技术的发展中发挥了重要作用。与内部燃烧发动机不同，外燃机是在发动机内部燃烧燃料，而是在发动机外部燃烧燃料以产生热量。这些热量用于产生蒸汽或气体，驱动活塞或涡轮，最终将热能转化为机械能。在历史上，外燃机曾广泛应用于蒸汽机车和船只，其中煤或木材在锅炉中燃烧以产生蒸汽。这些蒸汽随后被引导到气缸中，推动活塞转动车轮或螺旋桨。这些发动机的效率和动力使它们在工业革命期间不可或缺，促进了前所未有的交通和制造业。外燃机最著名的例子是蒸汽机，它在17世纪末开发，并在随后的几个世纪中不断改进。蒸汽机将燃料燃烧产生的热量转化为工作能力，彻底改变了世界各地的工业和经济。如今，尽管内燃机在汽车工业中占主导地位，但外燃机仍在某些细分市场中找到应用，例如在发电厂中，当使用多种燃料（包括生物质和废弃物）时，它们可能更有效。除了历史意义外，外燃机还提供了一些环境优势。由于它们可以利用多种燃料，包括可再生能源，因此有潜力减少对化石燃料的依赖。例如，生物质燃料的外燃机可以帮助将农业废弃物转化为能源，从而促进可持续发展。此外，外燃机通常在比其内部对应物更低的温度下运行，这可能导致较少的磨损。因此，耐用性可能导致较低的维护成本和更长的发动机使用寿命。然而，它们也面临挑战，例如需要更复杂的基础设施来管理燃烧过程及其相关排放。展望未来，外燃机的角色可能会进一步演变。随着技术的进步，研究人员正在探索更高效的设计和替代燃料，这可能增强这些发动机的性能。此外，随着世界向更绿色的能源解决方案转变，外燃机可能在特定行业重新受到欢迎，特别是在优先考虑可持续实践的地区。总之，理解外燃机的机制和影响为我们提供了对历史和当代能源系统的洞察。虽然它们可能不像内燃机那样普遍应用于日常生活，但它们独特的特性和可持续能源解决方案的潜力使它们成为值得探索的主题。外燃机的遗产继续影响现代工程和环境战略，提醒我们在追求能源效率和可持续性方面创新的重要性。