heat transfer

简明释义

热传递

英英释义

例句

1.In HVAC systems, efficient heat transfer 热传递 is essential for maintaining comfortable indoor temperatures.

在暖通空调系统中，高效的热传递 heat transfer 对于维持舒适的室内温度至关重要。

2.During the cooking process, heat transfer 热传递 from the stove to the pot is crucial for boiling water.

在烹饪过程中，从炉子到锅的热传递 heat transfer 对于煮水至关重要。

3.The engineers focused on minimizing heat transfer 热传递 in the design of the new insulation material.

工程师们专注于在新绝缘材料的设计中最小化热传递 heat transfer。

4.The scientist conducted experiments to measure the rate of heat transfer 热传递 in different materials.

科学家进行了实验，以测量不同材料中的热传递 heat transfer 速率。

5.In a thermodynamics class, we learned about heat transfer 热传递 through conduction, convection, and radiation.

在热力学课上，我们学习了通过导热、对流和辐射的热传递 heat transfer。

作文

Heat transfer is a fundamental concept in the field of thermodynamics and engineering. It refers to the movement of thermal energy from one physical system to another, which can occur through three primary mechanisms: conduction, convection, and radiation. Understanding heat transfer (热传递) is essential for designing efficient heating and cooling systems, as well as for various applications in everyday life.Conduction is the process by which heat energy is transferred through direct contact between materials. When two objects at different temperatures come into contact, the faster-moving particles of the hotter object collide with the slower-moving particles of the cooler object, transferring energy in the form of heat. For example, when a metal spoon is placed in a hot cup of coffee, the heat from the coffee is conducted through the spoon, making it warm to the touch. The rate of heat transfer (热传递) via conduction depends on the thermal conductivity of the materials involved and the temperature difference between them.Convection involves the movement of heat through fluids, such as liquids and gases. In this process, warmer, less dense portions of the fluid rise, while cooler, denser portions sink, creating a circulation pattern. This is commonly observed when boiling water; as the water at the bottom of the pot heats up, it rises to the surface, while cooler water descends to take its place. The efficiency of heat transfer (热传递) through convection is influenced by factors such as fluid velocity and temperature gradients.Radiation is the transfer of heat through electromagnetic waves, and it does not require a medium to occur. All objects emit thermal radiation based on their temperature; hotter objects emit more radiation than cooler ones. A classic example of radiation is the warmth felt from sunlight. The sun emits energy that travels through the vacuum of space and warms the Earth. Understanding heat transfer (热传递) through radiation is crucial for designing energy-efficient buildings and solar energy systems.In practical applications, engineers must consider all three mechanisms of heat transfer (热传递) when designing systems such as HVAC (heating, ventilation, and air conditioning), refrigeration, and thermal insulation. For instance, in an HVAC system, the design must account for conductive losses through walls, convective heat losses through air movement, and radiative heat gains from windows. By optimizing these factors, engineers can create systems that maintain comfortable indoor temperatures while minimizing energy consumption.Moreover, understanding heat transfer (热传递) is also vital in industries such as manufacturing and food processing, where precise temperature control is necessary for product quality and safety. For example, in the food industry, proper heat transfer (热传递) ensures that food is cooked evenly, preventing undercooking or overcooking, which can affect taste and safety.In conclusion, heat transfer (热传递) is an essential concept that plays a significant role in various scientific and engineering disciplines. By mastering the principles of conduction, convection, and radiation, individuals can apply this knowledge to improve energy efficiency, enhance product quality, and contribute to technological advancements. As we continue to face challenges related to energy consumption and environmental sustainability, a deeper understanding of heat transfer (热传递) will be increasingly important in developing innovative solutions for the future.

热传递是热力学和工程学领域的一个基本概念。它指的是热能从一个物理系统转移到另一个物理系统的过程，这种转移可以通过三种主要机制发生：导热、对流和辐射。理解热传递（heat transfer）对设计高效的加热和冷却系统以及日常生活中的各种应用至关重要。导热是热能通过材料直接接触进行转移的过程。当两个不同温度的物体接触时，较热物体中快速运动的粒子与较冷物体中较慢运动的粒子碰撞，将能量以热的形式转移。例如，当金属勺子放入热咖啡杯中时，咖啡的热量通过勺子传导，使其变得温暖。通过导热进行的热传递（heat transfer）的速率取决于所涉及材料的热导率和它们之间的温度差。对流涉及通过流体（如液体和气体）移动热量。在这个过程中，较温暖、密度较小的流体部分上升，而较冷、密度较大的部分下沉，形成循环模式。这在煮水时常见；当锅底的水加热时，它会上升到表面，而较冷的水下沉以取而代之。通过对流进行的热传递（heat transfer）的效率受流体速度和温度梯度等因素的影响。辐射是通过电磁波转移热量的过程，它不需要介质来发生。所有物体根据其温度发出热辐射；较热的物体发出的辐射比较冷的物体多。辐射的经典例子是阳光带来的温暖。太阳发出的能量穿过太空的真空并温暖地球。理解通过辐射进行的热传递（heat transfer）对于设计节能建筑和太阳能系统至关重要。在实际应用中，工程师在设计HVAC（加热、通风和空调）、制冷和热绝缘等系统时，必须考虑这三种热传递（heat transfer）机制。例如，在HVAC系统中，设计必须考虑通过墙壁的导热损失、通过空气流动的对流热损失以及通过窗户的辐射热增益。通过优化这些因素，工程师可以创建在保持舒适室内温度的同时，最小化能耗的系统。此外，理解热传递（heat transfer）在制造和食品加工等行业也至关重要，因为精确的温度控制对产品质量和安全性至关重要。例如，在食品行业，适当的热传递（heat transfer）确保食物均匀烹饪，防止未熟或过熟，这会影响口味和安全性。总之，热传递（heat transfer）是一个重要的概念，在各种科学和工程学科中发挥着重要作用。通过掌握导热、对流和辐射的原理，个人可以将这些知识应用于提高能源效率、增强产品质量，并为技术进步作出贡献。随着我们继续面临与能源消耗和环境可持续性相关的挑战，对热传递（heat transfer）的更深入理解将在开发未来创新解决方案中变得越来越重要。