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THERMOELECTRIC GENERATOR



What is Thermoelectric Generator


Thermoelectric Generators (TEG) are solid-state semiconductor devices that convert a temperature difference and the movement of heat into a useful DC power source.


Thermoelectric effect is the direct transfer of temperature differences to electric voltage. Thermoelectric effect is caused by charge carriers within the material (either electrons, or places where an electron is missing, known as “holes”) diffusing from the hotter side to the cool side, similarly to the way gas expands when it is heated. Thermoelectric property of a material is measured in volts per Kelvin(kV)


Thermoelectric Materials


Thermoelectric Materials are materials that can transfer heat from one pole to another if powered by an electric potential difference, and are already used in heat dissipation devices and in electronic equipment such as laptops and small appliances.


Thermoelectric Generators (TEGs) are excellent for powering electronics and due to their capability of directly converting heat to electrical energy. The optimal properties and design concepts of TEGs  can  give access  for delivering the next generation, high -performance, adaptable, customizable, durable, economical, and eco friendly energy -harvesting devices with wide applications.


Thermoelectric Generators (TEGs) can directly convert low grade heat to electricity and, thus, are very promising energy sources for wearable electronics. Wearable Electronics are products which implement electronic technology and computing devices, e.g. ring, jewelry, watch, wristband. 


Presently, developing flexible TEG systems has attracted a lot of attention, including using thermoelectric (TE) films, thermoelectric bulks, printable thermoelectric inks, thermoelectric fibers and organic thermoelectric materials.


High Performance of Thermoelectric Generator


Thermoelectric Generator (TEG) are use for Power Generation. Thermoelectric generators are called solid-state devices that convert heat into electricity,which is also called Peltier generators, TE generator and Seebeck generators . TEGs are basically based on thermoelectric effects involving interactions between the flow of heat and the movement of electricity through solid bodies. The greater the temperature difference, the greater the power that is produced.


For applications, thermoelectric generators become competitive because they are compact, simple and scalable. The performance of TEG turns waste heat into electrical energy effectively.


How Thermoelectric Generators Work?


Thermoelectric Generators (TEG) are solid-state semiconductor devices that convert a temperature difference and the movement of heat into a useful DC power source. 


Thermoelectric generator semiconductor devices uses the Seebeck effect to produce voltage. The generated voltage drives electrical current and produces useful power at a load.


How a Thermoelectric Generator Utilize The Seebeck Effect?


The main building block of a thermoelectric generator is a thermocouple. A thermocouple consist of one p -type semiconductor and one n -type semiconductor. The semiconductors are connected by a metal strip that connects the n type and the p type electrically in series. The semiconductors are also called the thermo elements, dice or pellets.


Seebeck effect is a direct energy transfer of heat into a voltage potential.  Seebeck effect occurs due to the flow of charge carriers within the semiconductors.


Uses of Thermoelectric Generator


1. Thermoelectric generators allow lost thermal energy to be recovered, energy to be produced in extreme environments, 


2. Thermoelectric generator enhance electric power to be produced in remote areas and micro sensors to be powered. 


3. Direct solar thermal energy can also be used to produce electricity.


4. Thermoelectric generators are used in power plants to convert waste into  electrical power.

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