heat transfer coefficient

简明释义

传热系数

英英释义

例句

1.The heat transfer coefficient 热传递系数 varies with fluid velocity and temperature.

热传递系数 热传递系数 随流体速度和温度而变化。

2.To improve thermal performance, we need to increase the heat transfer coefficient 热传递系数 of the heat exchanger.

为了提高热性能，我们需要增加热交换器的热传递系数 热传递系数 。

3.In HVAC systems, a higher heat transfer coefficient 热传递系数 means better energy efficiency.

在暖通空调系统中，较高的热传递系数 热传递系数 意味着更好的能效。

4.Engineers often calculate the heat transfer coefficient 热传递系数 to optimize cooling systems.

工程师们常常计算热传递系数 热传递系数 以优化冷却系统。

5.The heat transfer coefficient 热传递系数 of the material will determine how quickly it can absorb heat.

材料的热传递系数 热传递系数 将决定它吸收热量的速度。

作文

The concept of the heat transfer coefficient is crucial in the field of thermodynamics and engineering, particularly when analyzing how heat moves through different materials. The heat transfer coefficient can be defined as a measure of the heat transfer rate per unit area per degree of temperature difference between a solid surface and a fluid. This coefficient plays a significant role in various applications, including heating, cooling, and insulation systems. Understanding this concept allows engineers to design more efficient systems that can effectively manage thermal energy.In practical terms, the heat transfer coefficient is influenced by several factors, including the nature of the fluid (whether it is gas or liquid), the flow characteristics (laminar or turbulent), and the properties of the surface from which heat is being transferred. For instance, in a heating system where hot water flows through pipes, the heat transfer coefficient will determine how quickly the heat is transferred from the water to the surrounding environment. A higher heat transfer coefficient indicates better efficiency, meaning that heat is transferred more rapidly.To illustrate this further, let’s consider a common scenario: a heated metal plate in contact with air. The heat transfer coefficient for the air will depend on whether the air is still or moving. In still air, the heat transfer coefficient is relatively low because there is minimal movement to facilitate heat transfer. However, if a fan blows air over the metal plate, the movement increases the heat transfer coefficient, allowing heat to dissipate more quickly.Additionally, the heat transfer coefficient can vary significantly depending on the material properties. For example, metals typically have high heat transfer coefficients due to their excellent thermal conductivity. In contrast, insulating materials such as fiberglass or foam have low heat transfer coefficients, which makes them ideal for reducing heat loss in buildings. This understanding is essential for architects and builders who aim to create energy-efficient structures.Furthermore, calculating the heat transfer coefficient is vital in designing heat exchangers, which are widely used in industrial processes. Engineers must ensure that these devices operate effectively to maximize heat recovery and minimize energy consumption. By optimizing the heat transfer coefficient, they can enhance the performance of these systems, resulting in cost savings and reduced environmental impact.In conclusion, the heat transfer coefficient is an essential parameter in the study of heat transfer. Its significance extends across various fields, from mechanical engineering to architecture. A thorough understanding of the factors affecting the heat transfer coefficient enables professionals to design systems that are not only efficient but also sustainable. As technology advances, the ability to manipulate and optimize this coefficient will continue to play a pivotal role in the development of innovative thermal management solutions.

‘热传导系数’这一概念在热力学和工程领域至关重要，特别是在分析热量如何通过不同材料移动时。‘热传导系数’可以定义为单位面积每单位温度差下，固体表面与流体之间的热传递速率的测量。这个系数在各种应用中发挥着重要作用，包括加热、冷却和绝缘系统。理解这一概念使工程师能够设计出更高效的系统，有效管理热能。在实际应用中，‘热传导系数’受到多个因素的影响，包括流体的性质（是气体还是液体）、流动特性（层流或湍流）以及热量传递表面的特性。例如，在一个热水通过管道流动的加热系统中，‘热传导系数’将决定热量从水传递到周围环境的速率。较高的‘热传导系数’意味着更好的效率，这意味着热量传递得更快。为了进一步说明这一点，让我们考虑一个常见的场景：一个与空气接触的加热金属板。空气的‘热传导系数’将取决于空气是静止的还是流动的。在静止空气中，‘热传导系数’相对较低，因为几乎没有运动来促进热量传递。然而，如果风扇吹过金属板，空气的流动会增加‘热传导系数’，使热量更快地散失。此外，‘热传导系数’因材料特性而异。例如，金属通常具有较高的‘热传导系数’，因为它们的热导率优良。相比之下，玻璃纤维或泡沫等绝缘材料则具有较低的‘热传导系数’，这使得它们非常适合用于减少建筑物中的热量损失。这种理解对旨在创造节能结构的建筑师和施工者至关重要。此外，计算‘热传导系数’在设计热交换器时至关重要，热交换器广泛应用于工业过程。工程师必须确保这些设备有效运行，以最大限度地回收热量并减少能耗。通过优化‘热传导系数’，他们可以提高这些系统的性能，从而实现成本节约和减少环境影响。总之，‘热传导系数’是热传递研究中的一个基本参数。其重要性延伸至多个领域，从机械工程到建筑学。充分理解影响‘热传导系数’的因素，使专业人员能够设计出不仅高效而且可持续的系统。随着技术的发展，操控和优化这一系数的能力将继续在创新热管理解决方案的开发中发挥关键作用。