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BY

VALETI SURENDRA

KUMAR(09491A03A5)UNDER THE GUIDENCE OF

Sri.K.CHANDRA SEKHAR M.TECH(PH.D),ASSO.PROF,

ATECHNICAL SEMINOR REPORTON

THERMO ELECTRICAL

COOLERS

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CONTENTS:-

Introduction

What is a thermo electrical cooler

Components of thermo electrical coolers

Mechanism behind thermo electrical

coolers

Advantages & disadvantages

Applications

Conclusion

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INTRODUCTION:-

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WHAT IS THERMO

ELECTICAL COOLER

Thermoelectric coolers are solid state

heat pumps used for cooling below

ambient are required.

WORKING PRINCIPLE:-

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Components used in thermo

electrical coolers:-

Semiconductors

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Conducting plates

Cables for connection

POWER REQUIRED:-

Dc electric power

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ADVANTAGES:-

No moving parts

Small and lightweight

Maintenance-free

Acoustically silent and electrically quiet Heat or cool by changing direction of current flow

Wide operating temperature range

Highly precise temperature control (to within 0.1C)

Operation in any orientation, zero gravity andhigh G- levels

Environmentally friendly

Sub-ambient cooling

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DISADVANTAGES:- Less amount of cooling effect

It cant work at high temperatures & pressures

It can be useful to small objects only

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APPLICATIONS:-

Laboratory instruments

Temperature baths

Refrigerators

Telecommunications equipment

Temperature control in missiles and

space systems

etc

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CONCLUSION:-

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REFARENCES:-

Mollar(2003). Themoelectric Cooler Selection Procedure. Retieved June 2006.http://www.marlow.com/TechnicalInfo/themoelectric_cooler_selection_p.htm

Nagy, J. (1997). The Effectiveness of Water Vapor Sealing Agents When Used in Application With ThermoelectricCooling Modules. 16th International Conference on Thermoelectrics.

Nolas, G.S. Goldsmid H., and Sharp J. (2001). Thermoelectrics : basic principles and new materials developments.New York: Springer.

Rowe, D.M. (1995). CRC Handbook of Thermoelectrics. Boca Raton, FL: CRC Press.

Sales, Brian. (February 2002). Thermoelectric Materials: Smaller is Cooler.. Science (Vol. 295. no. 5558, pp. 1248

1249). Retrieved April 2006. http://www.sciencemag.org/cgi/content/full/295/5558/1248 .

Simons, R. E. and Chu, R. C. (2000) Application of thermoelectric cooling to electronic equipment: A review andanalysis.Annual IEEE Semiconductor Thermal Measurement and Management Symposium, pp1-9.

Snyder, J. The Science and Materials behind Thermoelectrics. Caltech-JPL Thermoelectrics Website. Retrieved April2006.

Tellurex. (2002). Retrieved May 2006. http://www.tellurex.com

Tellurex. (2002). The 12 Most Frequently Asked Questions About Themoelectric Cooling. Retrieved May 2006.

http://www.tellurex.com/12most.html TE Technology, Inc. (2005) Cold Plate/Solid. Free Design Service. Retrieved June 2006.

http://www.tetech.com/design/3081.shtml

TE Technology, Inc. Retrieved May 2006. http://www.tetech.com/techinfo/

TE Technology, Inc. (2005). Thermoelectric Modules. Retrieved April 2006. http://www.tetech.com/modules/

Wikipedia the Free Encyclopedia(May 2006). Semiconductor.. Retrieved May 2006.http://en.wikipedia.org/wiki/Semiconductor.

http://www.marlow.com/TechnicalInfo/themoelectric_cooler_selection_p.htmhttp://www.marlow.com/TechnicalInfo/themoelectric_cooler_selection_p.htmhttp://www.sciencemag.org/cgi/content/full/295/5558/1248http://www.sciencemag.org/cgi/content/full/295/5558/1248http://www.tellurex.com/http://www.tellurex.com/12most.htmlhttp://www.tellurex.com/12most.htmlhttp://www.tetech.com/design/3081.shtmlhttp://www.tetech.com/design/3081.shtmlhttp://www.tetech.com/techinfo/http://www.tetech.com/modules/http://en.wikipedia.org/wiki/Semiconductorhttp://en.wikipedia.org/wiki/Semiconductorhttp://en.wikipedia.org/wiki/Semiconductorhttp://www.tetech.com/modules/http://www.tetech.com/techinfo/http://www.tetech.com/design/3081.shtmlhttp://www.tellurex.com/12most.htmlhttp://www.tellurex.com/http://www.sciencemag.org/cgi/content/full/295/5558/1248http://www.marlow.com/TechnicalInfo/themoelectric_cooler_selection_p.htm

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