heat-transmission by convection

简明释义

对流传热

英英释义

例句

1.Cooking methods such as frying rely heavily on heat-transmission by convection 对流热传递 to cook food evenly.

煎炸等烹饪方法严重依赖对流热传递 对流热传递 来均匀烹饪食物。

2.The efficiency of a radiator depends on heat-transmission by convection 对流热传递 to warm up a room quickly.

散热器的效率取决于对流热传递 对流热传递 以快速加热房间。

3.When designing HVAC systems, engineers must consider heat-transmission by convection 对流热传递 for optimal airflow.

在设计暖通空调系统时，工程师必须考虑对流热传递 对流热传递 以实现最佳气流。

4.In nature, heat-transmission by convection 对流热传递 plays a vital role in weather patterns and ocean currents.

在自然界中，对流热传递 对流热传递 在天气模式和海洋洋流中发挥着重要作用。

5.In a pot of boiling water, the heat-transmission by convection 对流热传递 ensures that the heat from the stove is evenly distributed throughout the liquid.

在一锅沸水中，热量通过对流的传递 对流热传递 确保炉子上的热量均匀分布在液体中。

作文

Heat is an essential form of energy that plays a crucial role in our daily lives. It can be transmitted in various ways, including conduction, radiation, and one of the most significant methods known as heat-transmission by convection. This process occurs when heat is transferred through the movement of fluids, such as liquids and gases. Understanding heat-transmission by convection is vital not only in physics but also in numerous practical applications, from cooking to climate control in buildings.To comprehend heat-transmission by convection, we must first consider how it differs from conduction and radiation. Conduction occurs when heat is transferred through direct contact between materials, typically solids. For example, if you place a metal spoon in a hot cup of coffee, the heat from the coffee will transfer to the spoon through conduction. On the other hand, radiation involves the transfer of heat through electromagnetic waves, such as sunlight warming the Earth.In contrast, heat-transmission by convection relies on the movement of fluid particles. When a fluid is heated, its particles gain energy and begin to move more rapidly. As they move, they tend to rise due to their decreased density. This upward movement creates a current within the fluid, allowing cooler, denser fluid to sink and take its place, resulting in a continuous circulation pattern. This phenomenon is commonly observed when boiling water; the hot water at the bottom rises to the surface, while cooler water descends to be heated.The significance of heat-transmission by convection extends beyond simple observations in a kitchen. It is a fundamental principle in meteorology, where it helps explain weather patterns and the formation of clouds. Warm air rises, causing cooler air to rush in, which can lead to wind and precipitation. Similarly, in engineering, heat-transmission by convection is critical in designing heating and cooling systems, such as radiators and air conditioning units, that rely on the efficient movement of air or liquid to maintain comfortable temperatures.Moreover, heat-transmission by convection is also employed in various industrial processes. For instance, in chemical reactors, maintaining optimal temperatures is essential for reaction rates. Engineers often utilize convective heat transfer to ensure that the temperature remains consistent throughout the reactor, thereby maximizing efficiency and product yield.In conclusion, heat-transmission by convection is a vital concept that influences many aspects of our lives, from everyday cooking to complex scientific and industrial processes. By understanding how heat moves through fluids, we can better appreciate the natural phenomena around us and improve the technologies we use to create comfortable living environments. Therefore, grasping the principles of heat-transmission by convection not only enriches our knowledge of physics but also enhances our ability to apply this knowledge practically in various fields.

热量是能量的一种重要形式，在我们的日常生活中起着至关重要的作用。它可以通过多种方式传递，包括导热、辐射和一种被称为对流传热的重要方法。当热量通过液体或气体的运动传递时，就会发生这种过程。理解对流传热不仅在物理学中至关重要，而且在许多实际应用中也非常重要，从烹饪到建筑的气候控制。要理解对流传热，我们首先必须考虑它与导热和辐射的区别。导热发生在材料之间直接接触时，通常是固体。例如，如果你将金属勺子放入热咖啡杯中，咖啡的热量会通过导热传递给勺子。另一方面，辐射涉及通过电磁波转移热量，例如阳光温暖地球。与此不同的是，对流传热依赖于流体粒子的运动。当流体被加热时，其粒子获得能量并开始更快速地运动。随着它们的运动，由于密度减小，它们往往会上升。这种向上的运动在流体内部产生了一个电流，使得较冷、较重的流体下沉并取而代之，从而形成持续的循环模式。这种现象在煮水时常见；底部的热水上升到表面，而较冷的水则下沉以被加热。对流传热的重要性不仅限于厨房中的简单观察。它是气象学中的基本原理，帮助解释天气模式和云的形成。温暖的空气上升，导致较冷的空气迅速涌入，这可能导致风和降水。同样，在工程学中，对流传热对于设计依赖于空气或液体有效运动以维持舒适温度的供暖和制冷系统（如散热器和空调）至关重要。此外，对流传热还广泛应用于各种工业过程。例如，在化学反应器中，保持最佳温度对反应速率至关重要。工程师经常利用对流热传递来确保反应器内的温度保持一致，从而最大化效率和产品产量。总之，对流传热是一个重要的概念，影响着我们生活的许多方面，从日常烹饪到复杂的科学和工业过程。通过理解热量如何在流体中移动，我们可以更好地欣赏周围的自然现象，并改善我们用来创造舒适生活环境的技术。因此，掌握对流传热的原理不仅丰富了我们对物理学的知识，也增强了我们在各个领域实际应用这些知识的能力。