excess air ratio

简明释义

过量空气系数

英英释义

例句

1.Adjusting the excess air ratio 富余空气比 can optimize energy consumption in power plants.

调整富余空气比可以优化发电厂的能源消耗。

2.The excess air ratio 富余空气比 in the combustion process affects the efficiency of fuel usage.

燃烧过程中的富余空气比影响燃料使用的效率。

3.Monitoring the excess air ratio 富余空气比 is crucial for maintaining air-fuel balance.

监测富余空气比对于维持空气与燃料的平衡至关重要。

4.An optimal excess air ratio 富余空气比 can reduce emissions in industrial boilers.

最佳的富余空气比可以减少工业锅炉的排放。

5.A high excess air ratio 富余空气比 may lead to incomplete combustion.

较高的富余空气比可能导致不完全燃烧。

作文

The concept of excess air ratio is crucial in the field of combustion engineering. It refers to the amount of air supplied for combustion in relation to the theoretical amount required for complete combustion of a fuel. In simpler terms, it measures how much extra air is provided beyond what is necessary to fully burn the fuel. Understanding the excess air ratio is essential for optimizing combustion processes in various applications, including power plants, industrial furnaces, and internal combustion engines.When combustion occurs, fuel reacts with oxygen from the air to produce energy, carbon dioxide, and water. However, achieving perfect combustion is nearly impossible due to various factors such as fuel quality, temperature, and pressure. This is where the excess air ratio comes into play. By supplying more air than the stoichiometric requirement, we ensure that there is enough oxygen present to facilitate combustion, which can help reduce emissions of unburned hydrocarbons and carbon monoxide.A excess air ratio greater than one indicates that there is more air than needed for complete combustion, while a ratio less than one suggests insufficient air supply. The ideal excess air ratio varies depending on the type of fuel used and the specific combustion system. For instance, natural gas typically requires a lower excess air ratio compared to coal due to its higher hydrogen content and lower carbon content.Optimizing the excess air ratio is vital for several reasons. Firstly, it directly impacts the efficiency of the combustion process. With too much excess air, heat is lost as the additional air carries away energy in the form of exhaust gases. Conversely, too little excess air can lead to incomplete combustion, resulting in wasted fuel and increased emissions. Therefore, finding the right balance is key to maximizing efficiency and minimizing environmental impact.Moreover, the excess air ratio also affects the formation of nitrogen oxides (NOx), which are harmful pollutants produced during combustion at high temperatures. A higher excess air ratio can help lower peak combustion temperatures, thus reducing NOx formation. However, this must be carefully managed, as excessive air can lead to other issues, such as increased carbon dioxide emissions.In conclusion, the excess air ratio plays a pivotal role in the efficiency and environmental performance of combustion systems. Engineers and operators must continuously monitor and adjust this parameter to achieve optimal combustion conditions. By understanding the implications of the excess air ratio, industries can improve their processes, reduce emissions, and contribute to a more sustainable future. As technology advances, the ability to control and optimize the excess air ratio will become even more refined, leading to cleaner and more efficient combustion practices across various sectors.

“过量空气比”是燃烧工程领域中的一个关键概念。它指的是为燃料的完全燃烧所需的理论量与实际提供的空气量之间的比率。简单来说，它衡量了提供的额外空气量，超出了完全燃烧燃料所需的量。理解“过量空气比”对于优化各种应用中的燃烧过程至关重要，包括发电厂、工业炉和内燃机。在燃烧发生时，燃料与空气中的氧气反应，产生能量、二氧化碳和水。然而，由于燃料质量、温度和压力等各种因素，达到完美燃烧几乎是不可能的。这就是“过量空气比”的作用。通过提供超过化学计量要求的空气，我们确保有足够的氧气参与燃烧，这可以帮助减少未燃烃和一氧化碳的排放。“过量空气比”大于1表示提供的空气超过了完全燃烧所需的量，而小于1则表示空气供应不足。理想的“过量空气比”因所用燃料类型和特定燃烧系统而异。例如，天然气通常需要较低的“过量空气比”，而煤则需要更高，因为天然气的氢含量较高，碳含量较低。优化“过量空气比”至关重要，原因有几个。首先，它直接影响燃烧过程的效率。过多的过量空气会导致热量损失，因为额外的空气将能量以废气的形式带走。相反，过少的过量空气会导致不完全燃烧，造成燃料浪费和排放增加。因此，找到合适的平衡是最大化效率和最小化环境影响的关键。此外，“过量空气比”还会影响氮氧化物（NOx）的形成，NOx是燃烧过程中在高温下产生的有害污染物。较高的“过量空气比”可以帮助降低峰值燃烧温度，从而减少NOx的形成。然而，这必须谨慎管理，因为过多的空气会导致其他问题，例如二氧化碳排放增加。总之，“过量空气比”在燃烧系统的效率和环境性能中发挥着关键作用。工程师和操作员必须不断监测和调整这一参数，以实现最佳燃烧条件。通过理解“过量空气比”的影响，工业可以改善其过程，减少排放，为更可持续的未来做出贡献。随着技术的进步，控制和优化“过量空气比”的能力将变得更加精细，从而在各个行业推动更清洁、更高效的燃烧实践。