Abstract

During forging or furnace operation, air is the utility that should be available at all time in order to ensure a smooth and standardized operation.
Supplying air manually will reduce productivity and more man hour to accomplish a given task. 
Thus, an electric blower was designed in this regard with an efficient electric motor as the driver. The suction conditions and other application data are appropriately used to calculate the design parameters such as: suction specific speed, the power input to the blower, the inlet and outlet velocity , the twisting moment of the impeller shaft etc.
The principle adopted in this design is that the impeller was made of a close type because of the level of pressure needed to carry out blowing operations in a furnace. The blower was designed to convert driver energy to kinetic energy by accelerating it to the outer rim of the impeller and the impeller driven by the connecting shaft adds the velocity component to the air by centrifugally casting the air away from the impeller vane tips.

LIST OF FIGURES
Figure 2.1 Blower Equipped with Splash Lubrication
Figure 2.2 Blower Equipped with Pressure Lubrication
Figure 2.3 Helical Lobe Type Blower
Figur 2.4 Typical Helical Blower
Figure 2.5 Typical Blower Package
Fig.3.5.1 Mechanical drawing of the fully designed electric blower
Fig.3.5.2  Mechanical drawing of the blower discharge flange
Fig.3.5.3 Mechanical drawing of the electric blower connected to a furnace
Fig.3.5.4  Mechanical drawing of the closed impeller housing
Fig.3.5.5 Mechanical drawing of the impeller front cover 

LIST OF TABLES
Table 4.2.3 Values of the parameters of the newly designed electric blower

TABLE OF CONTENTS
Title Page
Abstract
List of figures
List of Tables
Table of contents

CHAPTER ONE
1.0 Introduction
1.1 Aim and Objectives
1.2 Statement of problems
1.3 Relevance of the project
1.4 Scope and limitation of study
1.5 Methodology

CHAPTER TWO
2.0  Literature Review
2.1   Rotary blower history
2.2   Design features of blowers
2.3 Two-Stage Rotary Blowers and Vacuum Pumps
2.4 Helical Lobe Blower
2.5 Development Trends
2.6 Accessories
2.7. Related Mathematical Formulae

CHAPTER THREE
3.0 Detailed Design And Fabrication Procedure
3.1 Design Specification And Considerations
3.2  Design Calculations
3.3 Materials Required And Selection
3.4  Fabrication Details
3.5 Detailed Mechanical Drawing Of The Electric Blower

CHAPTER FOUR
4.0   Test And Result
4.1 Test Procedure
4.2 Test Results
4.3  Table Of Values Of The Design Results Of The  Electric Blower.

CHAPTER FIVE
5.0 Conclusion And Recommendation
5.1 Conclusion
5.2 Recommendation
REFERENCES

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