thermoelectric current

简明释义

温差电流

英英释义

例句

1.In thermoelectric generators, thermoelectric current is generated from temperature differences.

在热电发电机中，热电流是由温度差产生的。

2.Researchers are exploring new materials that can enhance thermoelectric current efficiency.

研究人员正在探索可以提高热电流效率的新材料。

3.The thermoelectric current produced in this experiment was measured in milliamps.

在这个实验中产生的热电流以毫安为单位进行测量。

4.The device converts heat into electricity using the principles of thermoelectric current.

该设备利用热电流的原理将热量转化为电能。

5.Applications of thermoelectric current can be found in power generation and refrigeration.

在发电和制冷中可以找到热电流的应用。

作文

Thermoelectric materials have gained significant attention in recent years due to their ability to convert heat into electricity. This conversion process is known as the generation of thermoelectric current, which occurs when there is a temperature difference across a material. Essentially, when one side of a thermoelectric material is heated while the other remains cool, charge carriers within the material move from the hot side to the cold side. This movement generates an electrical voltage, leading to the production of thermoelectric current. The efficiency of this process depends on various factors, including the type of material used and the magnitude of the temperature gradient.The basic principle behind thermoelectric current generation lies in the Seebeck effect, named after the Estonian physicist Thomas Johann Seebeck who discovered it in the early 19th century. The Seebeck effect describes how a voltage is created in a circuit made of two different conductors when there is a temperature difference between them. This phenomenon is crucial for the development of thermoelectric devices that can harness waste heat from industrial processes or even from the human body to generate electricity.In practical applications, thermoelectric current has the potential to provide a sustainable energy source. For instance, in automotive industries, thermoelectric generators can be used to convert excess heat from car engines into usable electrical power, thereby improving fuel efficiency. Moreover, thermoelectric devices are being explored for use in space missions, where they can convert heat from radioactive decay into electricity, providing a long-lasting power source for spacecraft.Research into advanced thermoelectric materials aims to enhance the performance of thermoelectric current generation. Materials such as bismuth telluride, lead telluride, and silicon-germanium alloys are commonly studied due to their favorable thermoelectric properties. Scientists are also investigating nanostructured materials and complex oxides that may offer improved efficiency over traditional materials. The goal is to develop thermoelectric materials with a high Seebeck coefficient, low thermal conductivity, and high electrical conductivity, which are essential for optimizing thermoelectric current production.In addition to energy generation, thermoelectric current can also be utilized for temperature sensing and refrigeration. Thermoelectric coolers operate on the Peltier effect, which is the reverse of the Seebeck effect. When an electric current flows through a thermoelectric material, it can absorb or release heat, thus providing a means for active cooling without moving parts. This technology is particularly beneficial in applications requiring precise temperature control, such as in electronic devices and medical equipment.In conclusion, the study of thermoelectric current and its applications presents exciting opportunities in the field of energy conversion and management. As researchers continue to explore new materials and technologies, the potential for harnessing waste heat and improving energy efficiency becomes increasingly promising. The future of thermoelectric current holds the key to creating sustainable solutions for energy challenges, paving the way for a greener and more efficient world.

热电材料近年来受到广泛关注，因为它们能够将热量转化为电能。这一转化过程被称为生成热电流，当材料之间存在温差时就会发生这种现象。基本上，当热电材料的一侧被加热而另一侧保持冷却时，材料内部的电荷载体会从热侧移动到冷侧。这种运动产生电压，从而导致热电流的产生。该过程的效率取决于多种因素，包括所用材料的类型和温度梯度的大小。生成热电流的基本原理在于塞贝克效应，该效应以爱沙尼亚物理学家托马斯·约翰·塞贝克的名字命名，他在19世纪初发现了这一现象。塞贝克效应描述了当两个不同导体之间存在温差时，在由它们组成的电路中会产生电压。这一现象对于开发能够利用工业过程中的废热或甚至人体热量来发电的热电设备至关重要。在实际应用中，热电流有潜力提供可持续的能源来源。例如，在汽车工业中，热电发电机可以用来将汽车发动机的多余热量转化为可用的电能，从而提高燃油效率。此外，热电设备还被探索用于太空任务，其中它们可以将放射性衰变产生的热量转化为电力，为航天器提供持久的电源。对先进热电材料的研究旨在提高热电流生成的性能。碲化铋、碲化铅和硅锗合金等材料因其良好的热电特性而被广泛研究。科学家们还在研究纳米结构材料和复杂氧化物，这些材料可能在效率上优于传统材料。目标是开发具有高塞贝克系数、低热导率和高电导率的热电材料，这些都是优化热电流生产的关键。除了能量生成，热电流还可以用于温度传感和制冷。热电冷却器基于佩尔帖效应，这一效应是塞贝克效应的逆过程。当电流通过热电材料流动时，它可以吸收或释放热量，从而提供一种无运动部件的主动冷却手段。这项技术在需要精确温控的应用中尤为有益，如电子设备和医疗设备。总之，热电流及其应用的研究为能量转化和管理领域提供了令人兴奋的机会。随着研究人员继续探索新材料和新技术，利用废热和提高能效的潜力变得越来越有希望。热电流的未来是创造能源挑战可持续解决方案的关键，为更绿色、更高效的世界铺平道路。