coefficient of heat transfer

简明释义

传热系数

英英释义

例句

1.The engineer calculated the coefficient of heat transfer to optimize the cooling system in the building.

工程师计算了热传递系数以优化建筑物的冷却系统。

2.A higher coefficient of heat transfer indicates better thermal conductivity in materials.

更高的热传递系数表示材料的热导率更好。

3.To improve the performance of solar panels, we need to enhance their coefficient of heat transfer.

为了提高太阳能电池板的性能，我们需要增强它们的热传递系数。

4.The coefficient of heat transfer can vary significantly between different types of insulation.

不同类型的绝缘材料之间，热传递系数可能会有显著差异。

5.In HVAC design, understanding the coefficient of heat transfer is crucial for energy efficiency.

在暖通空调设计中，理解热传递系数对能源效率至关重要。

作文

The concept of the coefficient of heat transfer plays a crucial role in the field of thermodynamics and engineering. It is a measure of how effectively heat is transferred between materials or systems. Understanding this coefficient is essential for designing efficient heating and cooling systems, as well as for optimizing energy usage in various applications. In essence, the coefficient of heat transfer quantifies the rate at which heat is conducted through a material or across a boundary between two different materials.To better grasp the significance of the coefficient of heat transfer, one must first understand the basic principles of heat transfer. Heat can be transferred in three primary ways: conduction, convection, and radiation. The coefficient of heat transfer specifically pertains to conduction and convection, as these processes involve direct physical contact or fluid movement between substances.In conduction, the coefficient of heat transfer is influenced by the thermal conductivity of the materials involved. For instance, metals typically have high thermal conductivity, meaning they can transfer heat quickly compared to insulators like wood or plastic. In practical applications, engineers often select materials with appropriate coefficient of heat transfer values to ensure effective thermal management in systems such as heat exchangers, refrigeration units, and building insulation.Convection, on the other hand, involves the movement of fluids (liquids or gases) and the transfer of heat through this movement. The coefficient of heat transfer in convection depends on factors like fluid velocity, temperature difference, and the nature of the fluid itself. For example, air has a lower coefficient of heat transfer compared to water, which means that heating or cooling via air is generally less efficient than using water. This principle is often applied in HVAC (heating, ventilation, and air conditioning) systems, where engineers strive to maximize the coefficient of heat transfer to enhance comfort and energy efficiency.Moreover, the coefficient of heat transfer is not a constant value; it can vary based on several conditions, including surface roughness, temperature gradients, and the presence of coatings or films on surfaces. As such, accurate measurement and calculation of the coefficient of heat transfer are vital for engineers and designers when modeling thermal systems.In conclusion, the coefficient of heat transfer is a fundamental parameter in understanding and managing thermal processes in engineering. Its implications reach far beyond simple calculations; they influence the design and efficiency of countless systems we rely on daily. From improving energy efficiency in buildings to enhancing the performance of industrial equipment, mastering the coefficient of heat transfer is essential for anyone involved in the fields of science and engineering. By applying this knowledge, we can contribute to more sustainable practices and innovations in technology, ultimately leading to a more energy-efficient future.

热传递系数的概念在热力学和工程领域中发挥着至关重要的作用。它是衡量材料或系统之间热量传递效率的指标。理解这个系数对于设计高效的加热和冷却系统，以及优化各种应用中的能源使用至关重要。从本质上讲，热传递系数量化了热量通过材料或在两种不同材料之间的边界传导的速率。为了更好地理解热传递系数的重要性，首先必须了解热传递的基本原理。热量可以通过三种主要方式转移：导热、对流和辐射。热传递系数特别涉及导热和对流，因为这些过程涉及物质之间的直接接触或流体运动。在导热中，热传递系数受到所涉及材料热导率的影响。例如，金属通常具有高热导率，这意味着它们可以比木材或塑料等绝缘材料更快地传递热量。在实际应用中，工程师通常选择具有适当热传递系数值的材料，以确保在热交换器、制冷装置和建筑绝缘等系统中的有效热管理。另一方面，对流涉及流体（液体或气体）的运动以及通过这种运动的热量转移。对流中的热传递系数取决于流体速度、温差和流体本身的性质。例如，空气的热传递系数低于水，这意味着通过空气加热或冷却通常不如使用水高效。这一原理常常应用于HVAC（供暖、通风和空调）系统，工程师努力最大化热传递系数，以提高舒适度和能效。此外，热传递系数并不是一个恒定值；它可能会根据多种条件变化，包括表面粗糙度、温度梯度以及表面上涂层或薄膜的存在。因此，准确测量和计算热传递系数对于工程师和设计师在建模热系统时至关重要。总之，热传递系数是理解和管理工程热过程的基本参数。它的影响远不止简单的计算；它影响着我们日常依赖的无数系统的设计和效率。从改善建筑的能源效率到增强工业设备的性能，掌握热传递系数对任何从事科学和工程领域的人来说都是必不可少的。通过应用这一知识，我们可以为更可持续的实践和技术创新做出贡献，最终实现更高效的能源未来。