film boiling

简明释义

膜状沸腾

英英释义

例句

1.In industrial applications, film boiling can lead to inefficient heat transfer.

在工业应用中，膜沸腾可能导致热传递效率低下。

2.During the experiment, we observed that film boiling started at higher temperatures.

在实验过程中，我们观察到膜沸腾在更高温度下开始。

3.The phenomenon of film boiling occurs when a vapor layer insulates the liquid from the heating surface.

当蒸汽层隔绝液体与加热表面接触时，发生膜沸腾现象。

4.The researchers studied the effects of film boiling on various materials.

研究人员研究了膜沸腾对各种材料的影响。

5.Understanding film boiling is crucial for designing effective cooling systems.

理解膜沸腾对设计有效的冷却系统至关重要。

作文

In the realm of thermodynamics and heat transfer, the concept of film boiling plays a crucial role in understanding how heat is transferred between surfaces and fluids. Film boiling, or "膜沸腾", occurs when a liquid is heated to a temperature above its boiling point, creating a vapor layer that insulates the liquid from the heat source. This phenomenon is particularly significant in engineering applications, such as in heat exchangers, boilers, and even in cooking. The process begins when a surface is heated to a temperature that exceeds the saturation temperature of the liquid in contact with it. As the liquid reaches this critical point, bubbles form at the surface, but instead of collapsing back into the liquid, they grow larger and coalesce to create a continuous vapor layer. This vapor layer acts as an insulating barrier that reduces the rate of heat transfer from the surface to the liquid. This insulating effect leads to a decrease in the efficiency of heat transfer, which can be detrimental in many industrial processes.Understanding film boiling is essential for engineers who design systems that rely on efficient heat transfer. For instance, in nuclear reactors, maintaining optimal cooling is critical to ensure safety and performance. If film boiling occurs unexpectedly, it could lead to overheating and potential failure of the reactor components. Thus, engineers must carefully analyze the conditions under which film boiling might occur and implement measures to prevent it.Moreover, film boiling is not only a concern in industrial applications but also in everyday life. When boiling water in a pot, if the heat is applied too vigorously, film boiling can occur, leading to inefficient boiling and longer cooking times. Understanding this concept helps cooks optimize their methods, ensuring that food is cooked evenly and efficiently.Research into film boiling has also led to advancements in materials science. Scientists are exploring coatings and surface treatments that can minimize the effects of film boiling, thereby improving heat transfer rates. For example, surfaces that promote nucleate boiling rather than film boiling can significantly enhance thermal performance in various applications.In conclusion, film boiling is a fundamental concept in heat transfer that has far-reaching implications in both engineering and daily life. By understanding the mechanisms behind film boiling, we can improve the efficiency of heating systems, ensure safety in critical applications, and enhance our cooking techniques. As research continues to evolve, the insights gained from studying film boiling will undoubtedly lead to innovative solutions and improvements in technology. Therefore, grasping the principles of film boiling is essential for anyone involved in fields related to thermodynamics, engineering, and even culinary arts.

在热力学和热传递的领域中，膜沸腾的概念在理解表面与流体之间的热传递中起着至关重要的作用。膜沸腾发生在液体被加热到超过其沸点的温度时，形成一个蒸汽层，隔绝了液体与热源之间的接触。这种现象在工程应用中尤为重要，例如在热交换器、锅炉甚至烹饪中。这一过程始于表面被加热到超过与之接触的液体的饱和温度。当液体达到这个临界点时，气泡在表面形成，但并不是回落到液体中，而是变得更大并合并形成一个连续的蒸汽层。这个蒸汽层作为一个绝缘屏障，减少了从表面到液体的热传递速度。这种绝缘效应导致热传递效率下降，这在许多工业过程中可能是有害的。理解膜沸腾对于设计依赖于高效热传递的系统的工程师来说至关重要。例如，在核反应堆中，保持最佳冷却是确保安全和性能的关键。如果意外发生膜沸腾，可能导致过热和反应堆组件的潜在故障。因此，工程师必须仔细分析可能发生膜沸腾的条件，并采取措施防止其发生。此外，膜沸腾不仅仅是在工业应用中的关注点，在日常生活中也是如此。当在锅中煮水时，如果加热过于猛烈，可能会导致膜沸腾的发生，从而降低沸腾效率和延长烹饪时间。理解这个概念有助于厨师优化他们的方法，确保食物均匀高效地烹饪。对膜沸腾的研究也推动了材料科学的发展。科学家们正在探索可以最小化膜沸腾影响的涂层和表面处理，从而提高热传递率。例如，促进核沸腾而非膜沸腾的表面可以显著增强各种应用中的热性能。总之，膜沸腾是热传递中的一个基本概念，对工程和日常生活具有深远的影响。通过理解膜沸腾背后的机制，我们可以提高加热系统的效率，确保关键应用中的安全，并改善我们的烹饪技巧。随着研究的不断发展，研究膜沸腾所获得的见解无疑将推动技术的创新解决方案和改进。因此，掌握膜沸腾的原理对于任何涉及热力学、工程甚至烹饪艺术领域的人来说都是至关重要的。