Thermal management of electronics. Volume 1, Phase-change-based materials in composite heat sinks-an experimental approach / Rajesh Baby, C. Balaji.

Format:

Book

Author/Creator:

Baby, Rajesh, author.

Balaji, C., author.

Language:

English

Subjects (All):

Electronic apparatus and appliances--Thermal properties.

Electronic apparatus and appliances.

Physical Description:

1 online resource (141 pages)

Edition:

1st ed.

Place of Publication:

New York, New York : Momentum Press, LLC, 2019.

Summary:

Phase change material (PCM)-based composite heat sinks have attracted great interest in recent decades, especially in the context of thermal management of portable electronic devices such as mobile phones, digital cameras, personal digital assistants, and notebooks. In this monograph, a detailed analysis of plate fin heat sinks and plate fin heat sink matrix is presented, based on in-house experiments. Performance benchmarks are articulated and presented for these heat sinks. The state of the art in the development of PCM-based heat sinks and the challenges are outlined, and directions on future development are provided. It is our sincere hope and trust that this book will not only be informative but also awaken curiosity and inspire thermal management solution seekers to delve deep into the ocean of research in PCM-based heat sinks and discover their own pearls and diamonds.

Contents:

COVER

THERMAL MANAGEMENT OF ELECTRONICS, VOLUME I

CONTENTS

LIST OF FIGURES

LIST OF TABLES

ABBREVIATIONS

NOTATIONS

GREEK SYMBOLS

PREFACE

ACKNOWLEDGMENTS

CHAPTER 1: INTRODUCTION

1.1 Background

1.2 Possible Cooling Strategies

1.2.1 Active Cooling

1.2.2 Passive Cooling

1.3 Advantages of Passive Cooling Techniques over Active Cooling Methods

1.4 Phase Change Materials

1.5 Optimization of Systems

1.5.1 Optimization Techniques

1.6 Organization of the Book

1.7 Conclusion

CHAPTER 2: REVIEW OF LITERATURE

2.1 Introduction

2.2 Numerical and Experimental Investigations on PCM-Based Composite Heat Sinks

2.3 Studies on PCM-Based Finned Heat Sinks for Cyclic Heating

2.4 Scope and Objectives of the Present Study

2.5 Conclusion

CHAPTER 3: CHARACTERIZATION OF PCM AND TCE

3.1 Introduction

3.2 Selection of PCM

3.3 Thermal Conductivity Enhancer

3.4 Measurement Techniques to Determine Latent Heat of Fusion, Melting, and Specific Heat

3.5 Scanning Electron Microscope Analysis of Aluminum

3.6 DSC and MDSC Analysis of N-Eicosane

3.7 Conclusion

CHAPTER 4: EXPERIMENTAL SETUP AND METHODOLOGY

4.1 Introduction

4.2 Experimental Setup and Methodology

4.2.1 Heat Sink Assembly

4.2.2 Plate Heater

4.2.3 Thermocouple Positions

4.2.4 Experimental Arrangement

4.3 Instrumentation

4.3.1 Data Acquisition System

4.3.2 Thermocouples

4.3.3 Digital Multimeter

4.3.4 Electronic Mass Balance

4.3.5 Experimental Procedure

4.3.6 Uncertainty in Measurements

4.3.7 Repeatability in Measurements

4.4 Conclusion

CHAPTER 5: PERFORMANCE STUDIES AND THERMAL OPTIMIZATION OF PLATE FIN HEAT SINKS

5.1 Introduction

5.2 Experimental Setup

5.2.1 Heat Sink Assembly

5.2.2 Thermocouple Positions

5.3 Modeling

5.4 Artificial Neural Network.

5.5 Results and Discussion

5.5.1 Effect of Fins in Lowering the Temperature

5.5.2 Temperature Variation with Time for the Two 7 Plate Fin Heat Sinks at Different Power Levels

5.5.3 Comparison of Heat Sinks with Same Volumetric Fraction of the TCE

5.5.4 Temperature Variation in 7∗ Plate Fin Heat Sinks

5.5.5 Enhancement in the Operating Time due to the Addition of Fins

5.5.6 An Overview of the Performance of Heat Sinks

5.6 Optimization

5.6.1 Goodness of the ANN Fit

5.6.2 Optimization of the Heat Sink Assembly

5.7 Summary

5.8 Conclusion

CHAPTER 6: STUDIES ON THE PERFORMANCE OF PLATE FIN MATRIX AT CONSTANT AND INTERMITTENT HEATING

6.1 Introduction

6.2 Experimental Setup

6.3 Results and Discussion: Constant Heating

6.3.1 Comparison of Plate Fin Matrix Heat Sink with and without PCM

6.3.2 Comparison of PCM-filled (ϕ = 0.5 and 1) Plate Fin Matrix Heat Sink with the Baseline Case

6.3.3 Effect of the Volume Fraction of the PCM on Melting and Solidification

6.3.4 Variations in Temperature at the Heat Sink Base, Inside the PCM, and on the Side-Wall

6.3.5 Temperature Variation within the Molten PCM

6.4 Results and Discussion: Intermittent Heating

6.4.1 Performance for the Same Total Heat Energy and the Total Duration of Operation

6.4.2 Performance for the Same Lengths of Operation Time but with Different Total Heat Inputs

6.4.3 Performance for the Same Total Heat Input but Different Operating Times

6.4.4 Performance under Periodic Heating and Cooling

6.4.5 Performance under Nonperiodic Heating and Cooling at Fixed Total Heat Input

6.5 Summary

6.6 Conclusion

CHAPTER 7 DEDUCTIONS AND SUGGESTIONS FOR FUTURE WORK

7.1 Introduction

7.2 Major Conclusions

7.3 A Grand Overview of the Present Study Reported in Volume 1 and Volume 2

7.4 Suggestions for Future Work.

7.5 Recent Developments in PCM-Based Heat Sinks

7.6 Conclusion

APPENDIX A: SCHEMATIC DIAGRAMS OF VARIOUS HEAT SINKS USED IN THE PRESENT STUDY

REFERENCES

LIST OF PUBLICATIONS USED FOR THE BOOK

ABOUT THE AUTHORS

INDEX

AD PAGE

BACK COVER.

Notes:

Description based on print version record.

ISBN:

9781947083813

1947083813

OCLC:

1096228509