Stirling cycle

简明释义

等温等容循环

英英释义

例句

1.The Stirling cycle 斯特林循环 operates by cyclically compressing and expanding gas, which is a key principle in thermodynamics.

斯特林循环通过周期性地压缩和膨胀气体来运作，这是热力学中的一个关键原理。

2.The efficiency of the Stirling cycle 斯特林循环 makes it an attractive option for renewable energy systems.

由于斯特林循环的高效率，它成为可再生能源系统的一个有吸引力的选择。

3.A prototype using the Stirling cycle 斯特林循环 was built to test its efficiency in converting solar energy.

一个使用斯特林循环的原型被建造出来，以测试其将太阳能转化为能量的效率。

4.In our engineering class, we learned about the practical applications of the Stirling cycle 斯特林循环 in heat engines.

在我们的工程课上，我们学习了斯特林循环在热机中的实际应用。

5.Researchers are exploring how to optimize the Stirling cycle 斯特林循环 for use in small-scale power generation.

研究人员正在探索如何优化斯特林循环以用于小规模发电。

作文

The Stirling cycle is a thermodynamic cycle that describes the functioning of a Stirling engine, which is an external combustion engine. It operates by cyclically compressing and expanding a gas at different temperature levels, allowing it to convert thermal energy into mechanical work. The Stirling cycle consists of four main processes: isothermal expansion, constant volume cooling, isothermal compression, and constant volume heating. Each of these processes plays a crucial role in the efficiency and performance of the engine.In the first stage of the Stirling cycle, the gas within the engine is heated at a constant temperature. This occurs in the isothermal expansion phase, where the gas absorbs heat from an external source, causing it to expand. As the gas expands, it pushes a piston, which generates mechanical work. This is a critical step, as the amount of heat absorbed directly affects the amount of work produced.Following the isothermal expansion, the gas undergoes a constant volume cooling process. During this phase, the gas is isolated from the heat source, and it begins to lose heat to its surroundings. The volume remains constant, but the pressure decreases as the gas cools down. This cooling phase is essential for preparing the gas for the next stage of the Stirling cycle.The third stage is the isothermal compression, where the gas is compressed at a constant temperature. In this process, the gas is subjected to increased pressure while being kept at a low temperature, often by transferring heat to a sink. The work done on the gas during this compression phase is significant, as it reduces the volume of the gas while maintaining a lower temperature.Finally, the Stirling cycle completes with a constant volume heating phase. Here, the gas is again isolated from the heat sink and is allowed to absorb heat, increasing its temperature while keeping the volume constant. This heat absorption prepares the gas for the next cycle of expansion, and thus the process repeats.One of the notable advantages of the Stirling cycle is its high efficiency compared to traditional internal combustion engines. Since the engine operates on an external heat source, it can utilize various types of fuel, including renewable energy sources such as solar or biomass. Additionally, the closed-loop system of the Stirling cycle minimizes emissions, making it an environmentally friendly option for power generation.In recent years, interest in the Stirling cycle has grown due to advancements in materials and technology that allow for better heat transfer and improved engine designs. Researchers are exploring applications in areas such as combined heat and power systems, where the waste heat from industrial processes can be harnessed using Stirling engines. Furthermore, the potential for integrating the Stirling cycle with solar thermal systems presents exciting opportunities for sustainable energy solutions.In conclusion, the Stirling cycle represents a fascinating and efficient method of converting thermal energy into mechanical work. Its unique operating principles and versatility make it a valuable asset in the quest for cleaner and more sustainable energy sources. Understanding the intricacies of the Stirling cycle not only enhances our knowledge of thermodynamics but also paves the way for innovative applications that could benefit society as a whole.

斯特林循环是一个热力学循环，描述了斯特林发动机的工作原理，这是一种外燃机。它通过在不同温度水平下周期性地压缩和膨胀气体，从而将热能转化为机械功。斯特林循环由四个主要过程组成：等温膨胀、恒容冷却、等温压缩和恒容加热。这些过程在发动机的效率和性能中发挥着至关重要的作用。在斯特林循环的第一阶段，发动机内的气体在恒定温度下被加热。这发生在等温膨胀阶段，气体从外部热源吸收热量，导致其膨胀。当气体膨胀时，它推动活塞，从而产生机械功。这是一个关键步骤，因为吸收的热量直接影响产生的功的数量。在等温膨胀之后，气体经历恒容冷却过程。在这一阶段，气体与热源隔离，开始向周围环境散失热量。体积保持不变，但随着气体冷却，压力下降。这个冷却阶段对于为斯特林循环的下一阶段做准备至关重要。第三阶段是等温压缩，在此过程中，气体在恒定温度下被压缩。在这个过程中，气体在低温下承受更高的压力，通常通过将热量转移到热沉来实现。这个压缩阶段对气体施加的功是显著的，因为它在保持较低温度的同时减少了气体的体积。最后，斯特林循环以恒容加热阶段结束。在这里，气体再次与热沉隔离，并允许吸收热量，在保持体积不变的情况下提高温度。这种热量的吸收为气体准备下一轮的膨胀循环，因此该过程不断重复。斯特林循环的一个显著优势是其相对于传统内燃机的高效率。由于发动机在外部热源上运行，因此可以利用各种类型的燃料，包括可再生能源，如太阳能或生物质。此外，斯特林循环的闭环系统最小化了排放，使其成为发电的环保选项。近年来，由于材料和技术的进步，使得更好的热传递和改进的发动机设计，斯特林循环引起了越来越多的关注。研究人员正在探索在联合热电系统中的应用，在这些系统中，工业过程中的废热可以通过使用斯特林发动机进行回收。此外，将斯特林循环与太阳能热系统结合的潜力为可持续能源解决方案带来了令人兴奋的机会。总之，斯特林循环代表了一种迷人而高效的将热能转化为机械功的方法。其独特的操作原理和多功能性使其在追求更清洁和更可持续的能源来源的过程中成为一项宝贵资产。理解斯特林循环的复杂性不仅增强了我们对热力学的认识，也为可能惠及整个社会的创新应用铺平了道路。