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The Importance Of thermoelectricity

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 Importance Of thermoelectricity

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  1. Gino Rumhein Abdulrahman Fakhroo Me 304 12/12/12 The Importance Of thermoelectricity

  2. What is 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.

  3. Why Turn to thermoelectricity? 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

  4. Why isn’t it being used? Difficult to achieve high temperature gradient Metals that conduct heat usually also conduct electricity Thermoelectric materials not as efficient as could be

  5. The Seebeck Effect Linear Relationship between Seebeck coefficient and temperature:

  6. Bismuth Telluride Agray powder that is a compound of Bismuth and Tellurium Used Frequently for thermodynamic applications Seebeck Coefficient= 2x10^4

  7. Our Experiment 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

  8. Conclusion Potential to generate significant amount of voltage (180 V) IMPORTANT: IDEAL CASE ASSUMPTION Thermoelectricity could potentially revolutionize energy consumption

  9. Questions? Thank you for watching!

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