Key Features:
FORMAT - WORD
PAGES - 56
CHAPTERS - 1-6
Abstract:
ABSTRACT
This project, titled "Design and Construction of a DC Power Supply Unit for Digital Food Dehydrator Machine," focuses on creating an efficient and sustainable power supply system using solar energy. The primary objective is to harness solar power to operate a digital food dehydrator, ensuring a continuous and reliable energy source for food preservation. The system comprises four main components: solar panels, a charge controller, a battery, and an inverter. The solar panels capture and convert sunlight into electrical energy, which is then regulated by a Pulse Width Modulation (PWM) charge controller to safely charge a 12V, 40AH battery.
The stored DC power in the battery is converted into 220V AC by a 1KVA inverter, which powers the digital food dehydrator machine. Comprehensive testing of each component and the integrated system confirmed their optimal performance and efficiency. The project successfully demonstrates the viability of using renewable energy for household appliances, promoting environmental sustainability and providing a practical solution for food dehydration. Recommendations for system improvements and scalability are also provided, emphasizing the potential for enhanced performance and broader applications.
Table of Content:
TABLE OF CONTENTS
Page
Title Page i
Certification ii
Dedication iii
Acknowledgement iv
Abstract v
List of Tables vi
List of Figures vii
Table of Contents viii
CHAPTER ONE: INTRODUCTION
1.1 Background of the Study 1
1.2 Statement of the Problem 2
1.3 Aim and Objectives 2
1.4 Expected contribution to Knowledge 3
1.5 Scope of Study 3
1.6 Methodology 4
1.7 Definition of Terms 5
CHAPTER TWO: LITERATURE REVIEW
2.1 Brief outline of the chapter 6
2.2 Historical background of study 7
2.3 Theory and concept related to the research 10
2.4 Related works 12
CHAPTER THREE: METHODOLOGY
3.1 Brief outline of the chapter 13
3.2 Research design 14
3.3 Block diagram design of the project 22
3.4 Determination of components value 23
CHAPTER FOUR: PRINCIPLE OF OPERATION
4.1 Brief outline of the chapter 24
4.2 Explanation of various units of the circuit diagram. 33
4.3 Principle of operation 35
CHAPTER FIVE: CONSTRUCTION, TESTING AND RESULTS OF THE DESIGNED PROJECT
5.1 Brief outline of the chapter 36
5.2 Choice of materials 36
5.3 Construction of the project 39
5.4 Bill of Engineering Measurement and Evaluation (BEME) Table 40
5.5 Testing and results 43
CHAPTER SIX: CONCLUSION AND RECOMMENDATIONS
6.1 Conclusion 44
6.2 Recommendation 45
6.3 Contribution to knowledge 45
REFERENCES 46
APPENDIX 47
Introduction:
The preservation of food has been a fundamental practice since the dawn of civilization. Dehydration has remained one of the popular methods for preserving food for many years. The drying process involves reducing water from the product to an acceptable level for marketing, storage, or processing. Given the absence of sufficient water, microorganisms are unable to grow and multiply. Many of the enzymes and bacteria that cause food spoilage cannot function without water. The old method of food dehydration is executed by spreading the food material on the ground and exposing the food to sunlight. (Arinze, 2016)
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