reheat cycle

简明释义

再热循环

英英释义

例句

1.The reheat cycle on this model is designed to evenly distribute heat.

这个型号的再加热循环旨在均匀分配热量。

2.I forgot to take my lunch out of the fridge, so I used the reheat cycle to make it hot again.

我忘了把午餐从冰箱里拿出来，所以我用了再加热循环让它重新热起来。

3.The reheat cycle on this oven is perfect for bringing pizza back to life.

这个烤箱的再加热循环非常适合让比萨饼恢复美味。

4.Using the reheat cycle saves time when you need to quickly warm up a meal.

使用再加热循环可以节省时间，当你需要快速加热一顿饭时特别有效。

5.After cooking, I set the microwave to the reheat cycle to warm up my leftovers.

做完饭后，我把微波炉设置为再加热循环来加热我的剩菜。

作文

The concept of the reheat cycle is an essential aspect of thermodynamics, particularly in the field of power generation. It refers to a process where steam is reheated after it has partially expanded in a turbine. This process enhances the efficiency of thermal power plants by increasing the overall energy output from the steam cycle. In a typical thermal power plant, water is heated to create steam, which then drives a turbine connected to a generator. However, as steam expands and does work on the turbine, it loses some of its heat energy, resulting in lower efficiency. This is where the reheat cycle comes into play.During the reheat cycle, the partially expanded steam is redirected back to a heat exchanger, where it is reheated before it enters the second stage of the turbine. By reheating the steam, the temperature and pressure are increased, allowing the steam to do more work as it expands through the turbine. This additional energy extraction leads to a significant improvement in the thermal efficiency of the power plant.One of the main advantages of implementing a reheat cycle is that it reduces the moisture content of the steam entering the low-pressure stages of the turbine. When steam expands, it cools down and can condense into water droplets. These droplets can cause erosion and damage to turbine blades, reducing their lifespan and increasing maintenance costs. By reheating the steam, the reheat cycle helps maintain a higher temperature, minimizing the condensation and ensuring that the turbine operates smoothly.Moreover, the reheat cycle allows for better utilization of fuel. With the improved efficiency, less fuel is needed to produce the same amount of electrical power, which not only lowers operating costs but also reduces greenhouse gas emissions. This is particularly important in today’s context, where there is a growing emphasis on sustainable energy practices and reducing carbon footprints.In addition to traditional fossil fuel power plants, the principles of the reheat cycle can be applied in other energy systems, such as combined cycle power plants. In these systems, gas turbines are used to generate electricity, and the waste heat from the gas turbines is used to produce steam for additional power generation. Incorporating a reheat cycle in such systems can further enhance their efficiency, making them a viable option for meeting increasing energy demands while minimizing environmental impact.In conclusion, the reheat cycle plays a crucial role in improving the efficiency of thermal power plants and other energy systems. By reheating the steam after it has expanded in the turbine, this process enhances energy extraction, reduces moisture-related issues, and promotes better fuel utilization. As the world continues to seek cleaner and more efficient energy solutions, understanding and implementing the reheat cycle will be key to advancing our energy systems and achieving sustainability goals.

“再热循环”是热力学中的一个重要概念，特别是在发电领域。它指的是在蒸汽在涡轮机中部分膨胀后再次加热的过程。这个过程通过增加蒸汽循环的整体能量输出来提高热电厂的效率。在典型的热电厂中，水被加热以产生蒸汽，然后驱动与发电机连接的涡轮机。然而，随着蒸汽膨胀并对涡轮机做功，它会失去一些热能，从而导致效率降低。这就是“再热循环”发挥作用的地方。在“再热循环”过程中，部分膨胀的蒸汽被重新引导回热交换器，在那里它被加热，然后进入涡轮机的第二阶段。通过重新加热蒸汽，温度和压力得以提高，使蒸汽在通过涡轮机膨胀时能够做更多的功。这种额外的能量提取显著提高了发电厂的热效率。实施“再热循环”的主要优点之一是它减少了进入涡轮机低压阶段的蒸汽的湿度。当蒸汽膨胀时，它会冷却并可能凝结成水滴。这些水滴会导致涡轮叶片的侵蚀和损坏，缩短其使用寿命并增加维护成本。通过重新加热蒸汽，“再热循环”有助于保持较高的温度，最小化凝结，确保涡轮机平稳运行。此外，“再热循环”还允许更好地利用燃料。随着效率的提高，产生相同数量的电力所需的燃料减少，这不仅降低了运营成本，还减少了温室气体排放。这在当今背景下尤为重要，因为人们越来越重视可持续能源实践和减少碳足迹。除了传统的化石燃料电厂外，“再热循环”的原理也可以应用于其他能源系统，例如联合循环发电厂。在这些系统中，燃气涡轮用于发电，而燃气涡轮的废热被用于产生蒸汽以进行额外的发电。在此类系统中结合“再热循环”可以进一步提高其效率，使其成为满足日益增长的能源需求同时最小化环境影响的可行选择。总之，“再热循环”在提高热电厂和其他能源系统的效率方面发挥着至关重要的作用。通过在蒸汽在涡轮机中膨胀后对其进行重新加热，该过程增强了能量提取，减少了与湿度相关的问题，并促进了更好的燃料利用。随着世界继续寻求更清洁、更高效的能源解决方案，理解和实施“再热循环”将是推动我们的能源系统发展和实现可持续发展目标的关键。