film condensation

简明释义

薄膜冷凝

英英释义

例句

1.In the process of heat exchange, film condensation 薄膜冷凝 occurs on the surface of the condenser.

在热交换过程中，薄膜冷凝发生在冷凝器的表面。

2.During the experiment, we measured the rate of film condensation 薄膜冷凝 on various surfaces.

在实验中，我们测量了不同表面上薄膜冷凝的速率。

3.Engineers must consider film condensation 薄膜冷凝 when designing efficient cooling systems.

工程师在设计高效冷却系统时必须考虑到薄膜冷凝。

4.The efficiency of the heat exchanger is affected by film condensation 薄膜冷凝 rates.

热交换器的效率受到薄膜冷凝速率的影响。

5.Understanding film condensation 薄膜冷凝 helps improve thermal management in buildings.

理解薄膜冷凝有助于改善建筑中的热管理。

作文

Film condensation is a crucial phenomenon observed in various engineering applications, particularly in heat exchangers, condensers, and evaporators. Understanding this process is essential for optimizing thermal systems and improving energy efficiency. In essence, film condensation (薄膜冷凝) refers to the formation of a thin liquid film on a surface as vapor condenses into a liquid. This process is influenced by several factors, including temperature, pressure, and the properties of the vapor and surface involved.When vapor comes into contact with a cooler surface, it loses energy and begins to condense. Initially, this condensation occurs in the form of small droplets. However, as more vapor condenses, these droplets coalesce and form a continuous liquid film. This transition from droplet condensation to film condensation (薄膜冷凝) is significant because the heat transfer characteristics change dramatically. The presence of a liquid film can either enhance or hinder heat transfer, depending on the flow regime and other conditions.In many industrial applications, engineers aim to maximize heat transfer efficiency. In such cases, understanding film condensation (薄膜冷凝) is vital. For instance, in a vertical condenser, the gravitational force plays a significant role in the behavior of the liquid film. As the vapor condenses, the liquid film flows downwards due to gravity. The thickness of this film is a critical parameter because it affects the thermal resistance to heat transfer. A thicker film may lead to lower heat transfer rates, while a thinner film can enhance the process.Moreover, the heat transfer coefficient during film condensation (薄膜冷凝) is generally higher than that during droplet condensation. This is because the continuous film allows for better thermal contact between the vapor and the surface. Additionally, the presence of a film can reduce the thermal resistance at the interface, thereby enhancing the overall heat transfer performance.However, not all situations favor film condensation (薄膜冷凝). In some cases, such as when dealing with non-condensable gases, the formation of a stable film can be hindered. The presence of these gases can create an insulating layer that reduces the effectiveness of the condensation process. Engineers must account for these variables when designing systems that rely on condensation for cooling or heating purposes.In conclusion, film condensation (薄膜冷凝) is a complex process that plays a vital role in thermal management systems. By understanding the factors that influence the formation and behavior of the liquid film, engineers can design more efficient heat exchangers and other thermal devices. Continued research in this area will lead to improved technologies that can harness the benefits of film condensation (薄膜冷凝) for a wide range of applications, ultimately contributing to energy conservation and sustainability efforts.