Eem ppt

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Eem ppt

  1. 1. ELECTRICAL AND ELECTRONIC MATERIALS
  2. 2. PRESENTED TO :- Mr. Arvind Gupta sir
  3. 3. Thermoelectric Generators
  4. 4. IntroductionThermoelectric Generators ( also called thermo-generators) are devices which convert heat (temperature differences) directly into electrical energy, using a phenomenon called the "See-beck effect" (or "thermoelectric effect").Their typical efficiencies are around 5-10%.
  5. 5. Radio-isotope thermoelectricpower generator
  6. 6. Internal Glance
  7. 7. Micro power Module
  8. 8.  Older See-beck-based devices used bimetallic junctions and were bulky while more recent devices use bismuth telluride (Bi2Te3) semiconductor p-n junctions and can have thicknesses in the millimeter range.These are solid state devices and unlike dynamos have no moving parts, with the occasional exception of a fan.Radioisotope thermoelectric generators can provide electric power for spacecraft. Automotive thermoelectric generators are proposed to recover usable energy from automobile waste heat.
  9. 9. U S E S :-
  10. 10. thermoelectric generators are used for :- Small applications where heat engines such asStirling engines would not be possible. The use of waste heat in combustionengines promises to be a high volumeapplication field. Not only the exhaust butalso cooling agents are targeted.
  11. 11. To increase the efficiency a of the combinedsolar/thermoelectric system and convert thesolar radiation into useful electricity.Thermoelectric modules can be used for energyrecovery of otherwise wasted heat.Several companies have begun projects ininstalling large quantities of these thermoelectricdevices.
  12. 12. THANKYOU :~
  13. 13. Presented By :-RINI VISHWAKARMA EX~ IVSEM

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