Thermo electric effect

0 %
100 %
Information about Thermo electric effect
Education

Published on December 5, 2013

Author: ahmeddarkness

Source: slideshare.net

Description

Presentation about thermoelectric effect which is easy to understand for communication engineering #aast

Thermo Electric Effect By: Ahmed Diaa El Din

What is it ? The thermoelectric effect is the direct conversion of temperature differences to electric voltage . The direction of heat flow can be controlled by changing polarity of the voltage source.

History In the 1820’s Thomas Seebeck (Germany) discovered that if two metals at different temperatures were touching you could create an electric current. Jean Peltier discovered that the opposite was also true. By sending a current through two metals you could create differences in temperature.

Seebeck Effect Discover Seebak Coefficient : S=-∆V/ ∆T ΔV is the voltage difference. ΔT is the temperature difference between the hot and cold sides . The negative sign comes from the negative charge of the electron.

Peltier Effect Discover The efficiency by which a material is capable of generating power (Z) K thermal Conductivity - σ electrical Conductivity - S seebak coff.

Why does this Effect Occur? Charge Carrier Diffusion and Phonon Drag Peltier Effect Seebeck Effect

Thermoelectric Module

Applications Thermoelectric generator Cooling Computers Drink Coolers Recharging Devices Space Probes Solar Power Clothing

Video

References * G. Jeffrey Snyder and Eric S. Toberer "Complex Thermoelectric Materials" Nature Materials 7, 105-114 (2008). * G. Jeffrey Snyder, Tristan Ursell. "Thermoelectric efficiency and compatibility" Physical Review Letters, Vol 91 p. 148301 (2003) * CRC Handbook of Thermoelectrics, Introduction, Edited by D.M. Rowe, CRC Press, 1995. * Rockwood, Alan L. (1984). "Relationship of thermoelectricity to electronic entropy". Phys. Rev. A 30 (5): 2843–4. Bibcode 1984PhRvA..30.2843R. doi:10.1103/PhysRevA.30.2843 * http://www.thepowerpot.com/how-thermoelectric-generators-work

Thank You Questions ?

Add a comment

Related presentations

Related pages

Thermoelectric effect - Wikipedia

The thermoelectric effect is the direct conversion of temperature differences to electric voltage and vice versa. A thermoelectric device creates voltage ...
Read more

Thermoelectric materials - Wikipedia

Thermoelectric materials show the thermoelectric effect in a strong or convenient form. The thermoelectric effect refers to phenomena by which either a ...
Read more

Thermoelectrics - Northwestern University

Thermoelectrics The Science of Thermoelectric Materials The Seebeck Effect. In a thermoelectric material there are free electrons or holes which carry both ...
Read more

Thermo Electric Company Inc.

Thermo Electric Company, Inc. 1193 McDermott Drive West Chester, Pennsylvania 19380 United States of America. Phone: +1-610-692-7990 Toll Free: +1-800-766-4020
Read more

Home- Thermoelectric-generator teg modules

... Thermoelectric Generator, ... Discover Themo electric TEG Power. ... based semiconductors and have equal or Greater SEEBECK EFFECT Traits .
Read more

Thermo Electric Effect - scribd.com

FREE MATERIAL useful for 12th class CBSE board INDIA by narendra-67 in Types > School Work and cbse
Read more

Thermoelectric (Seebeck) Effect - YouTube

Mechanism of a thermoelectric power generator based on the Seebeck effect, converting heat into electricity.
Read more

How do thermoelectrics work | Power Practical

The Seebeck effect is named after Thomas J. Seebeck, who first discovered the phenomenon in 1821.
Read more

Home - thermoelectric

Our collection includes standard and custom-designed thermoelectric air conditioners, Peltier style cold plates and liquid chillers and accessories.
Read more