Gino Rumhein Abdulrahman Fakhroo Me 304 12/12/12. The Importance Of thermoelectricity. What is Thermoelectricity?. T he direct conversion of temperature differences to electric voltage and vice versa
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
The Importance Of thermoelectricity
The direct conversion of temperature differences to electric voltage and vice versa
Encompasses three separately identified effects: The Seebeck effect, the Peltiereffect and the Thomson effect.
Approximately 90% of the world’s energy is generated by heat energy
Most of it is wasted
15 terawatts of power are lost annually to the environment
Difficult to achieve high temperature gradient
Metals that conduct heat usually also conduct electricity
Thermoelectric materials not as efficient as could be
Linear Relationship between Seebeck coefficient and temperature:
Agray powder that is a compound of Bismuth and Tellurium
Used Frequently for thermodynamic applications
Wrap a truck’s exhaust pipe with a thermoelectric generator
Average temperature of a truck’s exhaust pipe is 260 C (530 K)
Average exhaust pipe
radius was found to
be 0.0508 m
Potential to generate significant amount of voltage (180 V)
IMPORTANT: IDEAL CASE ASSUMPTION
Thermoelectricity could potentially revolutionize energy consumption
Thank you for watching!