什么是热电发电机:工作及其用途

在1821年,一个名叫约翰塞贝克的着名科学家恢复了两种各种导体之间开发的概念热梯度,这可以产生电力。关于热电效应,存在一种称为导电物质中的温度梯度的概念,其产生热量和电荷载体扩散中的结果。这种热流在发育的热和冷却物质之间voltagedifference. So, this scenario has discovered the device thermoelectric发电机, and today, our article is on its working, advantages, limitations, and related concepts.

什么是热电发电机?

热电是单词电气和热量组合的名称。因此,名称表示热力对应于热能,电力对应于电能。热电发电机是在两个部分之间产生的温度差的转换中实现的装置electrical form of energy。这是基本的thermoelectric generator definition


这些装置取决于涉及界面的热电效应,通过固体组分在热流和电力之间发生的界面。

建造

热电发电机是由两种基本结构造的固态热部件的装置,其是p型和n型。p型结具有增加的+ ve电荷浓度,n型结具有增加的带电元件的浓度。

这p-type components are doped in the condition to have more positive charged carriers or holes thus providing a positive Seebeck coefficient. In a similar way, n-type components are doped to have more negative charged carriers thus providing a negative type of Seeback coefficient.

这rmoelectric Generator Working
这rmoelectric Generator Working

随着两个结之间的电连接的通过,每个带正电荷的载体移动到n结,并且类似地带负电荷的载体移动到p结。在里面thermoelectric generator construction,最具实施的元素是碲化物。

它是由碲和铅构成的组分,其具有最小量的钠或铋。除此之外,在该器件结构中使用的其他元素是硫化铋,碲化肽,碲化酰胺,砷化铟,碲化锗和许多其他元素。用这些材料,thermoelectric generator designcan be done.

这rmoelectric Generator Working Principle

thermoelectric generator workingis dependent on the Seeback effect. In this effect, a loop that is formed in between the two various metals generates an emf when the metal junctions are maintained at various temperature levels. As because of this scenario, these are also termed as Seeback power generators. Thethermoelectric generator block diagram显示为:

Block Diagram
Block Diagram

热电发电机通常包括在高温值下保持的热源,也包括散热器。这里,散热温度必须小于热源的温度。热源和散热器的温度值的变化允许跨越负载部分的流动电流。

In this kind of energy transformation, there exist no transitional energy conversions dissimilar to the other types of energy conversion. As because of this, it is termed as direct energy transformation. The generated power because of this Seeback effect is of single-phase DC type and is represented as I2R.L.where RL corresponds to resistance value at load.

可以以两种方式增加输出电压和功率值。一种是通过增加在热和冷边缘之间上升的温度变化,另一个是与热电发电机形成串联连接。

这voltage of this TEG device is given by V = αΔ T,

其中'α'对应于回光系数和'δ'是两个结之间的温度变化。由此,电流由

i =(v / r + rL.

由此,电压方程是

V = αΔT/R+RL.

由此,负载部分的电流是

P at load = (αΔT/R+RL.2(RL.

当r到达r时,额定电额定值就有更多L., 然后

Pmax = (αΔT)2/(4r)

将有电流流动到热边的热量和从冷缘去除热量的时间。并且所开发的电流处于DC形式,可转换为交流型逆变器。这voltage values can be more augmented through the implementation of transformers.

This kind of energy conversion can also be reversible where the energy flow path can be changed back. When both the DC power and load are removed from the edges, then heat can be simply withdrawn from thermoelectric generators. So, this is thethermoelectric generator theory在工作后面。

这rmoelectric Generator Efficiency Equation

该装置的效率表示为负载部分的电阻器处的电阻器的产生功率的比例。该比率表示为

Efficiency = (Generated power at RL)/(Heat flow ‘Q’)

=(I.2R.L./ q

Efficiency = (αΔT/R+RL.2(RL./ q

这就是如何计算热电发电机的效率。

热电发电机类型

Based on the TEG device size, kind of heat source and source for heat sink, power ability and application purpose, TEG’s are mainly classified as three types and those are:

  • Fossil fuel generators
  • Nuclear fueled generators
  • Solar源生成器

化石燃料发电机

这种类型的发电机设计用于利用煤油,天然气,丁烷,木材,丙烷和喷射燃料作为热源。对于商业应用,输出功率范围为10-100瓦。这些类型的热电发电机在导航辅助中的远程位置采用,信息收集,通信网络中的信息收集以及阴极安全性,因此避免了从破坏金属管和海洋系统的电解。必威体育怎么登录

核燃料发电机

可以利用放射性同位素的分解组分来为TEG器件提供增加的温度热源。由于这些器件相应地对核发射相应地明智并且可以长时间使用热源元件,因此这些核燃隆的热电发电机应用于远程应用。

Solar Source Generators

太阳能热电发电机使用with few achievements to provide power minimal size of irrigation pumps in remote locations and underdeveloped areas. Solar thermoelectric generators are constructed to supply electric power for orbiting spacecraft.

热电发电机的优点和缺点

热电发电机的优点是:

  • As all the components used in this TEG device are solid-state, they have enhanced reliability
  • 这extreme range of fuel sources
  • TEG器件被构造成输送功率范围,而不是MW的电源,而大于KW,这意味着它们具有巨大的可扩展性
  • 这se are direct energy transformation devices
  • Silently operated
  • Minimal size
  • 即使在极端和零的重力范围内也可以起作用

disadvantages of thermoelectric generator是:

  • 这se are a bit expensive when compared to other kinds of generators
  • 这se have minimal efficiency
  • 最小的热性质
  • 这se devices need more output resistance

热电发电机应用

  • 为了提高汽车的燃料性能,主要采用TEG器件。这些发电机利用在车辆操作时产生的热量
  • 塞贝克发电用于为航天器提供电力。
  • 实现热电发电机为远程站提供电力,例如天气系统,继电器网络等

因此,这是关于热电发电机的详细概念。总的来说,由于发电机具有巨大的突出,它们广泛用于许多领域的许多应用中。除了这些相关的概念外,这里清楚已知的其他概念是什么thermoelectric generator temperature difference

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