A
PROJECT REPORT
ON
COMPRESSOR LESS REFRIGERATOR
2013-2014
Submitted in the partial fulfillment for the award of the degree
BACHELOR OF TECHNOLOGY
IN
MECHANICAL ENGINEERING
Uttar pradesh Technical University, Lucknow
SUBMITTED TO- SUBMITTED BY-
Saurav dixit Prashant Kumar (1037140075 )
Prakash Chandra (1037140073)
Sanket Yadav (1037140090)
Pradip Kumar (1037140072)
Sandeep Kr. Mishara (1037140089)
IIMT Institute of Engineering & Technology, Meerut
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CERTIFICATE
This is to certify that the work which is being presented in the
project report titled “COMPRESSOR LESS REFRIGERATOR”
in partial fulfillment for the award of the degree of B.Tech and
submitted to the department of Mechanical Engineering, IIMT
INSTITUTE OF ENGINEERING & TECHNOLOGY MEERUT,
is an authentic record of the work carried out by SANDEEP KR.
MISRA, PRASHANT KUMAR, SANKET YADAV, PRAKASH
CHANDRA,PRADIP KUMAR , during the academic session 2013-
2014.
Mr.Saurav Dixit Mr. A.K Pandit
(Project Guide) (HOD)
M.E DEPARTMENT M.E DEPARTMENT
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ACKNOWLEDGEMENT
We are grateful to Mr Saurav dixit and Technology for his constant encouragement
and guidance during the preparation of this project. We
express our sincere gratitude A.K Pandit and Technology for his invaluable
suggestions and constructive criticism regarding this report.
Last but not the least, I am thankful to my family and friends and to all those who
helped us in any way to prepare this report.
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ABSTRACT
The main objective of this study is to design and build an affordable
thermoelectric refrigerator for the Bedouin people (e.g. deserts) living in remote
parts of Oman where electricity is still not available. The refrigerator could be
used to store perishable items and facilitate the transportation of medications as
well as biological material that must be stored at low temperatures to maintain
effectiveness. The design of the thermoelectric refrigerator is based on the
principles of a thermoelectric module (i.e., Peltier effect) to create a hot side and
a cold side. The cold side of the thermoelectric module is utilized for
refrigeration purposes; provide cooling to the refrigerator space. On the other
hand, the heat from the hot side of the module is rejected to ambient
surroundings by using heat sinks and fans. The designed solar thermoelectric
refrigerator was experimentally tested for the cooling purpose. The results
indicated that the temperature of the refrigeration was reduced from 27 °C to 5
°C in approximately 44 min. The coefficient of performance of the refrigerator
(COPR) was calculated and found to be about 0.16.
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TABLE OF CONTENTS PAGE NO.
CHAPTER-1
1) INTRODUCTION 01
CHAPTER-2
2) PLATFORM USED 03
2.1 Hardware requirements 04
2.2 Software requirements 04
CHAPTER-3
3) AIM OF THE PROJECT 05
CHAPTER-4
4) BLOCK DIAGRAM 08
CHAPTER-5
5) WORKING OF THE PROJECT 10
CHAPTER-6
6) PELTIER EFFECT 11
6.1 Introduction 12
6.2 Seebeck effect 12
6.3 Thermopower 13
6.4 Thomson effect 20
CHAPTER-7
7) PROPELLER 23
7.1 Actual performance 26
7.2 Skewback propeller 30
CHAPTER-8
8) THERMOELECTRIC 32
8.1 Introduction 32
8.2 Peltier modules 39
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8.3 Operrating feature 44
CHAPTER-9
9) SENSING UNIT 51
9.1 Heat sensor 52
9.2 Heat sink 56
CHAPTER-10
10) COMPONENTS DESCRIPTION 62
10.1 Transformer 63
10.2 Rectifier 65
10.3 Crystal Oscillator 75
10.4 Capacitor 76
10.5 Transistor 78
CHAPTER-11
11) COST COMPONENT 82
CHAPTER-12
12) CONCLUSION 83
CHAPTER-13
13) REFERENCE 84
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LIST OF FIGURES PAGE NO.
1) Block diagram 08
2) Peltier effect circuit 17
3) Propeller 23
4) Cross Section of a Typical TE Couple 32
5) The scheme of the experiment of Peltier heat measuring, Cu, Bi. 40
6) Structure of a Peltier module 42
7) Peltier module 43
8) An example of cascade connection of Peltier modules 44
9) An example of cascade connection of Peltier modules 44
10) The PAP2X3B cooler 49
11) LM335 HEAT sensor 52
12) Temperature sensor circuit 53
13) Heat sink 56
14) The ideal transformer as a circuit element 63
15) Schematic of a bridge rectifier 66
16) AC, half-wave and full wave rectified signals 67
17) Internal block Diagram 71
18) Fixed Output Regulator 72
19) Relays Photographs 73
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