overall coefficient of heat transfer

简明释义

总传热系数

英英释义

例句

1.We need to measure the overall coefficient of heat transfer 整体热传导系数 to ensure compliance with building codes.

我们需要测量整体热传导系数 overall coefficient of heat transfer以确保符合建筑规范。

2.To improve energy efficiency, we need to reduce the overall coefficient of heat transfer 整体热传导系数 in our heating system.

为了提高能效，我们需要降低供热系统中的整体热传导系数 overall coefficient of heat transfer。

3.The overall coefficient of heat transfer 整体热传导系数 influences how quickly a material loses heat.

整体热传导系数 overall coefficient of heat transfer影响材料失去热量的速度。

4.In HVAC design, understanding the overall coefficient of heat transfer 整体热传导系数 is crucial for maintaining comfort.

在暖通空调设计中，理解整体热传导系数 overall coefficient of heat transfer对维持舒适性至关重要。

5.The engineer calculated the overall coefficient of heat transfer 整体热传导系数 to optimize the building's insulation.

工程师计算了整体热传导系数 overall coefficient of heat transfer以优化建筑的绝缘性能。

作文

The concept of the overall coefficient of heat transfer is crucial in the field of thermal engineering and heat exchange systems. It serves as a fundamental parameter that quantifies the efficiency of heat transfer between two or more fluids, typically through a solid boundary such as a wall or a heat exchanger. Understanding this coefficient is essential for engineers and designers who aim to optimize heating and cooling processes in various applications, from industrial machinery to residential heating systems.To fully grasp the significance of the overall coefficient of heat transfer (总热传递系数), it is important to first understand the mechanisms of heat transfer. Heat can be transferred through conduction, convection, and radiation. The overall coefficient of heat transfer combines these modes of heat transfer into a single value that reflects the total heat transfer capability of a system. This coefficient is influenced by several factors, including the materials involved, the temperature difference between the fluids, and the flow characteristics of the fluids.In practical applications, the overall coefficient of heat transfer is used to design and analyze heat exchangers, which are devices that facilitate heat transfer between two or more fluids. For instance, in a car radiator, hot coolant from the engine flows through tubes, while air passes over these tubes, cooling the fluid. The efficiency of this process can be quantified using the overall coefficient of heat transfer, allowing engineers to determine the optimal size and configuration of the radiator to ensure effective cooling.Moreover, the overall coefficient of heat transfer plays a significant role in energy efficiency assessments. In buildings, for example, understanding how heat is transferred through walls, windows, and roofs can help in designing better insulation systems. A lower overall coefficient of heat transfer indicates better insulation properties, meaning less energy is required to maintain comfortable indoor temperatures. This not only reduces energy costs but also contributes to environmental sustainability by lowering carbon emissions associated with heating and cooling.Calculating the overall coefficient of heat transfer involves considering the individual resistances to heat transfer, which may include conduction through solid materials, convection at fluid interfaces, and even radiation if applicable. The formula for the overall coefficient of heat transfer can be expressed as:1 / U = 1 / h1 + L / k + 1 / h2Where U is the overall coefficient of heat transfer, h1 and h2 are the convective heat transfer coefficients of the fluids in contact with the solid surface, L is the thickness of the solid material, and k is its thermal conductivity. By analyzing these parameters, engineers can adjust designs to achieve desired performance outcomes.In conclusion, the overall coefficient of heat transfer is an essential concept in thermal management and engineering design. Its ability to encapsulate the efficiency of heat transfer processes makes it a valuable tool for optimizing systems across various industries. As we continue to seek more energy-efficient solutions, a deeper understanding of the overall coefficient of heat transfer will undoubtedly play a pivotal role in future innovations within thermal technology and sustainable practices.

总热传递系数的概念在热工程和热交换系统领域至关重要。它作为一个基本参数，量化了两个或多个流体之间的热传递效率，通常通过固体边界（如墙壁或热交换器）进行。理解这个系数对工程师和设计师而言至关重要，他们旨在优化各类应用中的加热和冷却过程，从工业机械到住宅供暖系统。要全面理解总热传递系数的重要性，首先需要了解热传递的机制。热量可以通过导热、对流和辐射进行传递。总热传递系数将这些热传递模式结合成一个单一的值，反映出一个系统的总热传递能力。这个系数受到多个因素的影响，包括所涉及的材料、流体之间的温差以及流体的流动特性。在实际应用中，总热传递系数用于设计和分析热交换器，这些设备促进两个或多个流体之间的热传递。例如，在汽车散热器中，来自发动机的热冷却液通过管道流动，而空气则经过这些管道，冷却流体。该过程的效率可以通过总热传递系数量化，使工程师能够确定散热器的最佳尺寸和配置，以确保有效的冷却。此外，总热传递系数在能源效率评估中也起着重要作用。例如，在建筑物中，理解热量如何通过墙壁、窗户和屋顶传递，可以帮助设计更好的绝缘系统。较低的总热传递系数表示更好的绝缘性能，这意味着维持舒适室内温度所需的能量更少。这不仅降低了能源成本，还通过减少与供暖和制冷相关的碳排放，促进了环境可持续性。计算总热传递系数涉及考虑热传递的各个单独阻力，这可能包括固体材料的导热、流体界面的对流，甚至在适用时的辐射。总热传递系数的公式可以表示为：1 / U = 1 / h1 + L / k + 1 / h2其中U是总热传递系数，h1和h2是与固体表面接触的流体的对流热传递系数，L是固体材料的厚度，k是其导热率。通过分析这些参数，工程师可以调整设计以实现所需的性能结果。总之，总热传递系数是热管理和工程设计中的一个重要概念。它能够概括热传递过程的效率，使其成为优化各行业系统的宝贵工具。随着我们继续寻求更节能的解决方案，对总热传递系数的深入理解无疑将在热技术和可持续实践的未来创新中发挥关键作用。