nucleate boiling

简明释义

泡核沸腾

英英释义

例句

1.The heat exchanger operates efficiently due to the presence of nucleate boiling, which enhances heat transfer.

由于存在萌生沸腾，热交换器的运行效率很高，从而增强了热传递。

2.The design of the cooling system takes advantage of nucleate boiling to maintain optimal temperatures.

冷却系统的设计利用萌生沸腾来维持最佳温度。

3.During the experiment, we noted that nucleate boiling significantly reduced the surface tension of the liquid.

在实验过程中，我们注意到萌生沸腾显著降低了液体的表面张力。

4.Engine efficiency can be improved by promoting nucleate boiling in the radiator.

通过促进散热器中的萌生沸腾可以提高发动机效率。

5.In the laboratory, we observed that nucleate boiling occurs at specific temperature ranges.

在实验室中，我们观察到萌生沸腾发生在特定的温度范围内。

作文

Nucleate boiling is a crucial concept in the field of heat transfer and thermodynamics. It refers to the process where vapor bubbles form at discrete sites on a heated surface, typically when that surface is in contact with a liquid. This phenomenon is significant because it enhances the efficiency of heat transfer between the surface and the liquid. The formation of bubbles occurs when the temperature of the surface exceeds the boiling point of the liquid, leading to the nucleation of vapor. The term 'nucleate' implies that the bubbles originate from specific points, known as nucleation sites, which can be microscopic imperfections or impurities on the surface. Understanding nucleate boiling (成核沸腾) is essential for various applications, including power generation, refrigeration, and chemical processing.In practical terms, nucleate boiling (成核沸腾) is observed in many industrial processes. For instance, in a steam generator, water is heated until it reaches its boiling point, resulting in the formation of steam bubbles on the heat exchanger surfaces. These bubbles grow and eventually detach from the surface, carrying away heat and allowing more water to come into contact with the hot surface. This cycle continues, facilitating efficient energy transfer. The effectiveness of nucleate boiling (成核沸腾) is influenced by several factors, including surface roughness, temperature difference, and fluid properties.One of the key advantages of nucleate boiling (成核沸腾) is its ability to maintain a high heat transfer coefficient. This characteristic is vital in preventing overheating of surfaces, which can lead to equipment failure or reduced performance. In contrast, if the boiling process transitions to film boiling, where a continuous layer of vapor forms over the surface, the heat transfer rate significantly decreases. Therefore, engineers strive to optimize conditions to encourage nucleate boiling (成核沸腾) rather than allowing it to shift to less efficient boiling regimes.Moreover, the study of nucleate boiling (成核沸腾) has implications for safety in various systems. For example, in nuclear reactors, maintaining effective cooling through nucleate boiling (成核沸腾) is critical to prevent overheating of the reactor core. Any disruption in this process could lead to severe consequences, underscoring the importance of understanding the dynamics of bubble formation and growth.In conclusion, nucleate boiling (成核沸腾) is a fundamental process that plays a vital role in heat transfer applications across multiple industries. By promoting efficient energy transfer and ensuring system safety, it remains a focal point of research and development. As technology advances, further insights into the mechanisms of nucleate boiling (成核沸腾) will undoubtedly lead to improved designs and enhanced operational efficiencies in thermal systems.

成核沸腾是热传递和热力学领域的一个重要概念。它指的是气泡在加热表面上离散位置形成的过程，通常发生在该表面与液体接触时。这个现象非常重要，因为它增强了表面与液体之间的热传递效率。当表面的温度超过液体的沸点时，气泡开始形成，导致蒸汽的成核。术语“成核”意味着气泡源自特定点，即称为成核位点的微观缺陷或表面杂质。理解nucleate boiling（成核沸腾）对许多应用至关重要，包括发电、制冷和化工处理。在实际应用中，nucleate boiling（成核沸腾）在许多工业过程中都有观察到。例如，在蒸汽发生器中，水被加热到沸点，导致蒸汽气泡在热交换器表面形成。这些气泡不断增长并最终从表面脱落，带走热量，使更多的水能够与热表面接触。这个循环继续进行，从而促进高效的能量转移。nucleate boiling（成核沸腾）的有效性受到多个因素的影响，包括表面粗糙度、温差和流体特性。nucleate boiling（成核沸腾）的一个主要优点是其能够保持高的热传递系数。这一特性对于防止表面过热至关重要，过热可能导致设备故障或性能下降。相反，如果沸腾过程转变为膜沸腾，即在表面上形成连续的蒸汽层，则热传递速率将显著降低。因此，工程师们努力优化条件，以鼓励nucleate boiling（成核沸腾），而不是让其转变为效率较低的沸腾状态。此外，nucleate boiling（成核沸腾）的研究对各种系统的安全性也有影响。例如，在核反应堆中，通过nucleate boiling（成核沸腾）保持有效的冷却对于防止反应堆核心过热至关重要。任何这一过程的中断都可能导致严重后果，这突显了理解气泡形成和生长动态的重要性。总之，nucleate boiling（成核沸腾）是一个基本过程，在多个行业的热传递应用中发挥着至关重要的作用。通过促进高效的能量转移和确保系统安全，它仍然是研究和开发的重点。随着技术的进步，对nucleate boiling（成核沸腾）机制的进一步深入了解无疑将导致热系统设计的改进和操作效率的提高。