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相关概念视频

Mechanism of heat transfer01:19

Mechanism of heat transfer

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Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
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Joule-Thomson Effect01:21

Joule-Thomson Effect

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The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases.
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
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Absorption of Radiation01:05

Absorption of Radiation

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The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
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Quantifying Heat02:46

Quantifying Heat

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Thermal Energy 
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Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

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Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
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Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

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In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
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Updated: May 10, 2025

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
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使用非线性在单个温度下收集短暂的热能.

Tamzeed B Amin1, James M Mangum1, Md R Kabir2

  • 1Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA.

Entropy (Basel, Switzerland)
|April 26, 2025
PubMed
概括

研究人员理论上证明了使用带有二极管的非线性电路收集短暂的热能. 更高质量的二极管产生了更多的储存电荷,但收获是暂时的,需要在放电之前断开电容器的连接.

关键词:
福克斯·普朗克 (Fokker 普朗克) 是一个伊托朗格维恩 (英语:ItoLangevin) 是一个意大利名字.二极管的非线性是不线性的.能源采集 能源采集在随机模拟中使用随机模拟.储存电容器 储存电容器 储存电容短暂的动态 短暂的动态

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科学领域:

  • 分析非线性电路分析
  • 热力学是一种热力学.
  • 节能采集 节能采集 节能采集

背景情况:

  • 研究采集热能的方法.
  • 探索非线性元件在能源转换中的作用.

研究的目的:

  • 理论上研究两个非线性电路的短暂的热能收获.
  • 分析二极管质量和电容对能量采集的影响.

主要方法:

  • 解决伊托-朗格文方程和福克-普朗克方程.
  • 使用大型参数空间,包括电容和二极管质量.
  • 系列和全波整流器电路的理论建模.

主要成果:

  • 使用二极管在单个温度下证明过渡热能收获.
  • 观察到更高质量的二极管会产生更大的储存电荷和更长的寿命.
  • 证实电容电荷在平衡时为零,满足热力学第二定律.

结论:

  • 带有二极管的非线性电路可以实现短暂的热能收获.
  • 有效的收获需要充电电容器,然后在放电之前断开它们.
  • 极非线性是收集环境热能的关键,尽管是短暂的.