thermoelectric generator

Topics: Thermoelectric effect, Temperature, Thermodynamics Pages: 22 (2351 words) Published: August 13, 2014
CERTIFICATE

This is to certify that the hardware project entitled “THERMO ELECTRIC GENERATOR (TEG)” is submitted by RAHUL GOEL (06BME123) to the School of Mechanical & Building Sciences, VIT University, Vellore is a bonafide record of the project work carried out by him under my supervision.

During the project phase, their involvement and interest are __________________

Guide
Mr. C. Ramesh Kumar
(Sr. Asst. Professor)

------------------------------------------------------------------------------------------ ACKNOWLEDGEMENT

I express our profound thanks to our chancellor, VIT, Shri. G. Viswanathan for providing the necessary infrastructure out this project successfully.
I also thank Dr. S. Narayanan, Dean, School of Mechanical & Building Sciences for his support and continuously encouragement in completing the project. I express my genuine indebtedness to Mr. C. Ramesh Kumar, Senior Assi. Lecturer, School of Mechanical & Building Sciences whose whole hearted guidance and valuable suggestions throughout this project helped us in completing it successfully, without which the project would not have attained a fine and final shape. I would also like to express our gratitude to all faculty members of the school for their timely encouragement and thought provoking suggestion to pursue our work. Last but not the least, we would like to thank all those who were directly and indirectly helped us in completion of this project. CHAPTER: I

1.0 Introduction

Man’s constant evolution couldn’t have been possible without fuels. Society is putting more emphasis on the mobile transportation sector to achieve future goals of sustainability and on low thermal efficiencies of IC engine. About 60% of heat-energy liberated during combustion of fuel is not utilized in producing useful work and getting dumped into the atmosphere daily. To achieve these goals, society needs to jump to a new method to recover the lost part of exhaust energy.

The recovering of heat from exhaust gases in automobiles is a typical area of generating steam (or) electricity using W.H.R.B.* (or) Thermoelectricity. It depends on the basic principle of ‘Seebeck Effect’. It would be useful to demonstrate the potential of thermoelectric generation in the automobile industry using Thermoelectric Generator (TEG’s). A thermoelectric generator, which can be driven by the temperature difference, incorporates fins into a thermopile to conduct heat toward or away from the alternating spaces between adjacent layers of different types of thermoelectric material.

Vehicles are becoming more electrified and the higher electrical demands under nearly all driving conditions are required. On board electrical energy management and storage systems are more prevalent. TEG’s provides source of additional electrical power without increasing fuel consumption. The study reveals that about 6% of the exhaust energy can be taped from the exhaust there by increasing the thermal efficiency. It can be used to increase the overall efficiency of the engine without increasing the fuel consumption and thus there would be a separate source of the electricity that a vehicle needs for keeping its battery charged and for powering all of its on-board electric circuits.

*W.H.R.B. = Waste heat recovery boiler
1.1 Problem Specification
To design and fabricate the Thermo Electric Generator and its various components. To test the TEG under various conditions when used on Maruti 800 standing engine.

1.2 Objective
To design the TEG and its various components using SolidWorks (CAD) designing software and to fabricate the same using various manufacturing processes. Then the manufactured model is tested for efficiency , power output under various conditions when tested with Maruiti 800 standing engine.

CHAPTER: II
2 Literature Survey

2.1 Thermoelectric Principle
The Thermoelectric principle though established for long back found application only to the...

References: Jet Propulsion Laboratory/California Institute of TechnologyP.H. Giauque and M.A. Nicolet
California Institute of Technology, 1200 E
4.“Development of High Efficiency Thermoelectric Generators Using Advanced Thermoelectric Materials”, 1997 Research paper
Thierry Cailla, Jean-Pierre Fleunal and Atex Borshchevsky
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