DESIGN AND CONSTRUCTION OF A MAINS BOX HEAT MONITOR
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This is to certify that the research work, "design and construction of a mains box heat monitor" by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.
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DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
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This work is on “mains box heat monitor circuit” which monitors the mains distribution box constantly and sounds an alarm when it senses a high temperature due to overheating, helping to prevent disasters caused by any sparking in the mains box due to short circuits. It also automatically switches on a bright white LED when the power fails. The LED gives ample light to check the mains box wiring or fuses in darkness. The circuit beeps once when power fails and again when power resumes.
TABLE OF CONTENTS
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
1.2 PROBLEM STATEMENT
1.3 AIM AND OBJECTIVES OF THE PROJECT
1.4 RESEARCH QUESTION/ HYPOTHESIS
1.5 PURPOSE OF THE WORK
1.6 SIGNIFICANCE OF THE PROJECT
1.7 APPLICATION OF THE PROJECT
1.8 SCOPE AND LIMITATION OF THE STUDY
1.9 PROJECT ORGANISATION
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 OVERVIEW OF TEMPERATURE CONTROL
2.2 DEFINITION OF TEMPERATURE SENSOR
2.3 TYPES OF TEMPERATURE SENSORS
2.4 TEMPERATURE OF ELECTRICAL BOXES AND ENCLOSURES
CHAPTER THREE
3.0 METHODOLOGY
3.1 SYSTEM BLOCK DIAGRAM
3.2 SYSTEM CIRCUIT DIAGRAM
3.3 CIRCUIT DESCRIPTION AND OPERATION
3.4 SYSTEM PARTS LIST
3.5 COMPONENTS DESCRIPTION
CHAPTER FOUR
RESULT ANALYSIS
4.0 CONSTRUCTION PROCEDURE AND TESTING
4.1 CASING AND PACKAGING
4.2 ASSEMBLING OF SECTIONS
4.3 TESTING
4.5 PROBLEM ENCOUNTERED
CHAPTER FIVE
5.1 CONCLUSION
5.2 RECOMMENDATION
REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
A distribution board has been known as a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure. Normally, a main switch, and in recent boards, one or more residual-current devices (RCDs) or residual current breakers with overcurrent protection (RCBOs) are also incorporated.
Electrical power distribution cabinets are used both indoors and outdoors. High temperature phenomenon is common in many equipment, and we take its heat dissipation into account when designing the distribution cabinet. Of course, we also need to pay attention when using it, so how to prevent it from high temperature.
Some components inside the distribution cabinet have service conditions, and their normal working conditions are specified accordingly: the upper limit of ambient air temperature shall not exceed 40 ℃; The average ambient air temperature of 24 ° C shall not exceed 35 ° C; The lower limit of ambient air temperature shall not be lower than - 25 ℃. In the high temperature season in midsummer, the temperature in the box of the distribution cabinet will rise to a very high level. If the temperature at this time greatly exceeds the specified ambient temperature of the distribution cabinet, it will cause overheating and failure of electrical components in the distribution cabinet. Therefore, during the redesign, we can discharge the high temperature in the distribution cabinet by designing louvers and adding cooling fans, all for the purpose of maintaining a safe temperature. This work is aimed at building an electronic circuit for monitoring a distribution box temperature automatically.
1.2 PROBLEM STATEMENT
Electrical enclosures such as in distribution board system, serve to protect electrical devices from adverse environmental influences, such as dirt, other particulates, moisture, or chemicals that could damage components. Plus, by housing electrical devices inside a secure enclosure or box, personnel are protected from electrical hazards such as electric shock, arc flash, and burns. However, electrical devices generate heat as a byproduct of their operation. When the heat load of the electrical devices within an enclosure exceeds the heat dissipation achieved through natural convection, the temperature inside the enclosure will rise. Since the performance and lifespan of electrical devices will degrade as temperature increases, this excessive heat must be removed in order to keep the temperature within acceptable operating limits. To protect the components of a distribution system from damages or breakdown due excessive environmental temperature a mains box heat monitor was built.
1.3 AIM AND OBJECTIVES OF THE PROJECT
The main aim of this work is to build an electronic circuit which monitors the mains distribution box constantly and sounds an alarm when it senses a high temperature due to overheating.
The objectives of the work are:
- To build a temperature monitoring device with an alarm that alerts the user whenever the temperature of a distribution board exceeds the required level.
- To protect the components of a distribution board from damages
- To prevent breakdown in distribution board due to high temperature.
- To prevent disasters caused by any sparking in the mains box due to short circuits.
1.4 RESEARCH QUESTION/ HYPOTHESIS
At the end of this research, answers to the following questions shall be provided.
- How does temperature monitoring system work?
- What is a temperature monitor called?
- What temperature should an electrical cabinet be?
- How hot is too hot for an electrical panel?
HYPOTHESIS
Hi: there is a significant relationship between distribution box and temperature
Ho: there is no significant relationship between distribution box and temperature
1.5 PURPOSE OF THE WORK
The purpose of this work is to provide a means of preserving the lifespan and performance of enclosed electrical components.
With this system, one can remotely monitor system temperature and get the idea of whether temperature is constant / increasing / decreasing. Another and most important advantage is when temperature exceeds specified limit the alarm signal is available on output terminal. This can help in taking any immediate or automatic action.
This study will also help students to understand how to use temperature sensors.
1.7 APPLICATION OF THE PROJECT
Apart from monitoring a distribution box, or any other electrical enclosure.This device can be used for temperature monitoring of appliances such as:
- Air conditioner
- Refrigerator
- furnace etc.
1.8 SCOPE AND LIMITATION OF THE STUDY
This device was built around a Germanium diode (1N34) which is the temperature sensing element, which is connected in the reverse bias mode, and a NE555 (IC1) is wired as an a stable multivibrator. A 9v power supply was used to power the system.
1.9 PROJECT ORGANISATION
The work is organized as follows: chapter one discuses the introductory part of the work, chapter two presents the literature review of the study, chapter three describes the methods applied, chapter four discusses the results of the work, chapter five summarizes the research outcomes and the recommendations.
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and construction of a mains box heat monitor" is also available. Order full work to download. Chapter two of "design and construction of a mains box heat monitor" consists of the literature review. In this chapter all the related work on "design and construction of a mains box heat monitor" was reviewed.
CHAPTER THREE: The complete chapter three of "design and construction of a mains box heat monitor" is available. Order full work to download. Chapter three of "design and construction of a mains box heat monitor" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of "design and construction of a mains box heat monitor" is available. Order full work to download. Chapter four of "design and construction of a mains box heat monitor" consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of "design and construction of a mains box heat monitor" is available. Order full work to download. Chapter five of "design and construction of a mains box heat monitor" consist of conclusion, recommendation and references.
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