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
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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
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