In cooling mode, the Coefficient of Performance (COP) of the Peltier cell is equivalent to the all out heat moved through the Thermoelectric cooler (TEC) partitioned by the electric info power, COP = Qc/Pin. The first subplot shows the COP as a component of current for a few temperature contrasts.

1. “Study Of Peltier Device as Thermoelectric Cooler”
NITTE MEENAKSHI INSTITUTE OF TECHNOLOGY
(Yelahanka, Bangalore – 560064)
Name: Suraj D Naik USN : 1NT20ERE07
Mini Project On
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Under the guidance of
Mr. CH V Ramesh
Asst Professor
Department of Electrical and Electronics Engineering
NMIT
Department of Electrical and Electronics Engineering
MTech in Renewable Energy

2. Introduction
The Peltier effect is named after
JeanCharles Peltier (1785- 1845)
who first observed it in 1834.
The Peltier effect had no practical
use for over 100years until
dissimilar metal devices were
replaced with semiconductor .
Peltiers which could produce much
larger thermal gradients.
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3. Literature Survey
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REFERENCE Tools Used /Type of Study OBSERVATION
1. Rohit Sharma, Vivek Kumar
Sehgal, Nitin, Abhinav
Thakur, Adnan Munir Khan,
Ashish Sharma.
Implementation of solar power
to thermoelectric device
This paper demonstrates the
use of novel and innovative
technologies for
implementation of an air
conditioning system.
2. Reiyu Chein, Yehong
Chen.
Study Of Heat Sink In this paper a TEC integrated
with a microchannel heat sink
was employed to cool a fixed
amount of water in a tank with
an initial temperature.
3. K.N. Khamila, M.F.M.
Sabria, M.S.Sharuddin.
MATLAB / Simulink Modelling and Simulation of
the Performance Analysis for
Peltier Module and Seebeck
Module using
MATLAB/Simulink

4. Seebeck Effect
Discovered by Thomas Johann Seebeck in 1821.
He accidentally found that a voltage existed between two ends of a
metal bar when a temperature gradient existed within the bar.
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5. What is a Peltier Cooler?
Thermoelectric heat pumps that will produce a
temperature gradient that is proportional to an applied
current.
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6. Device Construction
 Individual couples are connected in series electrically and in
parallel thermally
 Couples are thermally connected
by a ceramic that has high
electrical resistivity and high
thermal resistivity.
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7. Injected Materials In Peltier
Bismuth-Telluride n and p
blocks
An electric current forces
electrons in n type and holes in
p type away from each other on
the cold side and towards each
other on the hot side.
The holes and electrons pull
thermal energy from where
they are heading away from
each other and deliver it to
where they meet.
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8. Peltier Effect
 At the junction of two dissimilar
metals the energy level of
conducting electrons is forced to
increase or decrease.
 A decrease in the energy level
emits thermal energy, while an
increase will absorb thermal
energy from its surroundings.
 The temperature gradient for
dissimilar metals is very small.
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9. Applications
Deep space probes
Microprocessor cooling
Camera’s
Temperature regulated flight suits
Air conditioning in submarines
Portable DC refrigerators
Automotive seat cooling/heating
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10. Pros and Cons
Pros
Solid state (no moving parts)
No maintenance
Long service lifetime
Cons
Large electrical power requirements
Inefficient compared to phase change cooling
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11. Result’s Interms Of Performance - MATLAB
 The first subplot shows the COP as a function of current for
several temperature differences.
 It can be observed that, for the same current value, the COP
value is lower for larger temperature differences.
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12.  The second graph shows how the heat flow evolves with the
input current.
 The last graph shows the operating current that maximizes the
COP value for each temperature difference.
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13. References
 K.N.Khamila, Sabria, R.Mohamed, M.S.Sharuddin
Paper: Modelling and Simulation of the Performance Analysis for Peltier
Module and Seebeck Module using MATLAB/Simulink.
 Reiyu Chein, Yehong Chen
Paper : Performances of thermoelectric cooler integrated with microchannel
heat sinks.
 S. B. Riffatn,y and Xiaoli Ma
Paper: Improving the coefficient of performance of thermoelectric cooling
systems.
 http://www.heatsink-guide.com/content.php?content=peltierinfo.shtml,
 http://saturn.jpl.nasa.gov/index.cfm
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