This document describes the design and testing of a solar refrigerator that uses a Peltier device to cool a compartment. The refrigerator is powered by solar panels and maintains a temperature lower than the surroundings without using compressors or refrigerants. The document reviews previous work on thermoelectric cooling, outlines the objectives and components of the solar refrigerator, and presents test results showing it can cool a 260x150x175 mm compartment from 30°C to 25°C over 100 seconds. It concludes the refrigerator demonstrates solar-powered cooling without harmful refrigerants and provides potential applications in enclosures, labs, and medical storage.

1. Solar Refrigerator using Peltier
Module

2.  Introduction
 Literature Review
 Objectives
 Principle
 Components
 Results and Discussion
 Conclusions
 Future scope
 References
Contents

3.  Implementation of photovoltaic driven refrigerating.
 To maintains lower temp. than the surroundings.
 Peltier Effect
 It is also called thermoelectric cooler.
Introductio
n

4. Literature
Review
Year Author name Major findings
1991 Rogers et al. Engineering Thermodynamics
Work and Heat Transfer.
2015 Porges et al. Handbook of Heating, Ventilating
and Air Conditioning.
2016 B Patond et al. Experimental Analysis of Solar
operated TEC and TEH .
2016 Chetanjangonda et al. Review on various Thermoelectric
Module.

5.  Reduce energy crises.
 It does not need of any kind of refrigerant and moving bodies.
 Reduce Ozone layer depletion.
Objectives

6. It is the reverse phenomenon of the Seebeck Effect.
Seebeck Effect - When an temp difference is created across the junction of two
different wires , results into a potential difference occurs.
Peltier Effect – When an DC electric current passes through the device there is
cooling on one side and heating on other.
Principle

7. Fig. 2 Peltier Effect
Fig. 1 Seebeck Effect

8.  Solar Panel
 Peltier Device
 12V DC Battery
 Cooling Fan
 Heat Sink
 Insulation Material
Component
s

9. Sr.no.
Time(s) Time(min) Temp(°C) Temp(°F)
1 0 0 30 86
2 32 .533 29 84.2
3 49 .816 28 82.4
4 62 1.033 27 80.6
5 76 1.267 26 78.8
6 88 1.467 25 77
7 100 1.667 24 75.2
Result and
Discussion
Compartment Volume = (260*150*175) mm3
Initial Temp. = 30°C

10.  Without the use of compressor and refrigerant it is possible to cool the system.
 It is one of the way to harness the Rewenable energy.
 Its COP is less compares to conventional refrigerator.
Conclusion

11.  Electronic Enclosures
 Laboratory equipments
 Medical drugs
Future
scope

12. 1) Rogers, G.F.C and Mayhew, Y.R. 1991. Engineering Thermodynamics
Work and Heat Transfer.
2) Porges, F. 1991. Handbook of Heating, Ventilating and Air Conditioning.
8th ed.
3) Mr. Swapnil B Patond et. al., ―Experimental Analysis of Solar operated
thermoelectric heating and cooling system Feb 2015.
4) Chetanjangonda et al., ―Review of Various Application of Thermoelectric
Module March 2016.
References