film coefficient of heat transfer

简明释义

薄膜导热系数

英英释义

例句

1.In HVAC design, understanding the film coefficient of heat transfer 热传递膜系数 is crucial for energy efficiency.

在暖通空调设计中，理解热传递膜系数对能效至关重要。

2.The research focused on measuring the film coefficient of heat transfer 热传递膜系数 in various materials.

研究集中在测量不同材料的热传递膜系数。

3.The engineer calculated the film coefficient of heat transfer 热传递膜系数 to optimize the heating system.

工程师计算了热传递膜系数以优化加热系统。

4.The film coefficient of heat transfer 热传递膜系数 varies with fluid velocity and temperature.

热传递膜系数随流体速度和温度而变化。

5.To improve cooling performance, we need to enhance the film coefficient of heat transfer 热传递膜系数 in the system.

为了提高冷却性能，我们需要增强系统中的热传递膜系数。

作文

The concept of heat transfer is fundamental in engineering and physics, particularly when it comes to understanding how energy moves between different bodies. One of the key parameters used to quantify heat transfer is the film coefficient of heat transfer, which plays a crucial role in determining the efficiency of thermal systems. The film coefficient of heat transfer (热传递薄膜系数) refers to the rate at which heat is transferred through a fluid layer that is adjacent to a solid surface. This coefficient is influenced by various factors, including the properties of the fluid, the nature of the surface, and the flow conditions.In practical applications, the film coefficient of heat transfer is critical in designing heat exchangers, cooling systems, and various other thermal management devices. For instance, in a heat exchanger, the effectiveness of the heat transfer process largely depends on the film coefficient of heat transfer. A higher coefficient indicates a more efficient heat transfer, which can lead to reduced energy consumption and improved performance of the system.To understand how the film coefficient of heat transfer is determined, we must consider several factors. First, the physical properties of the fluid, such as viscosity, thermal conductivity, and density, significantly affect the coefficient. For example, water has a higher thermal conductivity compared to air, resulting in a higher film coefficient of heat transfer when water flows over a heated surface.Second, the flow characteristics of the fluid also play a vital role. Laminar flow, characterized by smooth and orderly fluid motion, typically results in lower film coefficients of heat transfer compared to turbulent flow, where the fluid moves chaotically. Turbulent flow enhances mixing and increases the rate of heat transfer, thus improving the overall efficiency of the system.Moreover, the geometry and surface roughness of the solid surface can influence the film coefficient of heat transfer. Smooth surfaces generally promote laminar flow, while rough surfaces can induce turbulence, leading to a higher coefficient. Engineers often take these factors into account when designing surfaces for optimal heat transfer.In conclusion, the film coefficient of heat transfer (热传递薄膜系数) is an essential parameter in the field of thermal engineering. It provides insight into the efficiency of heat transfer processes and is influenced by fluid properties, flow conditions, and surface characteristics. Understanding this coefficient allows engineers to design more effective thermal systems, ultimately leading to improved energy efficiency and performance. As technology advances, the ability to manipulate and optimize the film coefficient of heat transfer will continue to be a focal point in the development of innovative thermal management solutions.

热传递是工程和物理学中的基本概念，特别是在理解能量如何在不同物体之间移动时。用于量化热传递的关键参数之一是热传递薄膜系数，它在确定热系统效率方面发挥着重要作用。热传递薄膜系数指的是通过与固体表面相邻的流体层传递的热量速率。这个系数受到多种因素的影响，包括流体的性质、表面的特性和流动条件。在实际应用中，热传递薄膜系数在设计热交换器、冷却系统和各种其他热管理设备中至关重要。例如，在热交换器中，热传递过程的有效性在很大程度上取决于热传递薄膜系数。较高的系数表示更高效的热传递，这可以导致降低能耗和提高系统的性能。要理解热传递薄膜系数是如何确定的，我们必须考虑几个因素。首先，流体的物理性质，如粘度、导热性和密度，对系数有显著影响。例如，水的导热性比空气高，因此当水流过加热表面时，会导致更高的热传递薄膜系数。其次，流体的流动特性也起着重要作用。层流的特点是流体运动平稳有序，通常会导致较低的热传递薄膜系数，而湍流则是流体混乱运动，通常会导致较高的系数。湍流增强了混合并增加了热传递速率，从而提高了系统的整体效率。此外，固体表面的几何形状和粗糙度也会影响热传递薄膜系数。光滑的表面通常促进层流，而粗糙的表面则可能引发湍流，从而导致更高的系数。工程师在设计表面以实现最佳热传递时，通常会考虑这些因素。总之，热传递薄膜系数（热传递薄膜系数）是热工程领域的重要参数。它提供了对热传递过程效率的洞察，并受到流体性质、流动条件和表面特性的影响。理解这个系数使工程师能够设计出更有效的热系统，最终提高能效和性能。随着技术的发展，操控和优化热传递薄膜系数的能力将继续成为开发创新热管理解决方案的重点。