ABSTRACT:
The designed air driven engine is an economic friendly engine
which operates with the aid of a compressed air. in principle, an air driven
engine uses the expansion of compressed air to drive the pistons of an engine.
an air driven engine is a pneumatic actuator that creates useful work by
expanding compressed air. there is no mixing of fuel with air as there is no
combustion.
An air driven engine makes use of compressed air technology
for its operation the compressed air technology is quite simple. if we compress
normal air into a cylinder the air would hold some energy within it. this
energy can be utilized for useful purposes. when this compressed air expands,
the energy is released to do work. so this energy in compressed air can also be
utilized to displace a piston
TABLE OF CONTENTS
CHAPTER ONE
1.0 introduction
1.1aims and objectives
1.2 statement of problem
1.3 relevance of the project
1.4 scope and limitation of study
1.4 scope and limitation of study
CHAPTER TWO
2.0 literature review
2.1 vacuum brazing technology
2.2 characteristics of vacuum brazing furnaces
2.3 types of vacuum brazing technology
2.3.1 aluminum vacuum brazing furnaces
2.3.2 copper vacuum brazing furnaces
2.3.3 nickel brazing vacuum furnaces
2.4 problems with brazing furnaces
2.5 the programmable logic controller
2.5.1 hardware
CHAPTER THREE
3.0 equipment design, specification and working principle
3.1 universal programmer 25
3.1.1 set point and parameter display
3.2 universal transmitter 35
3.3 signal conditioting circuit
3.3.1 vacuum brazing furnace:
3.3.2 temperature sensor
3.4 therrmocouples
3.4.1 principle:
3.4.2 resistance thermometer
3.4.3 vacuum sensor
3.4.4 recorder
3.4.4.1 features
3.5 thyristor control
3.5.1 specifications:
3.6 vacuum instruments
3.6.1mini convectron vacuum gauge
3.6.2front panel features:
3.6.3vacuum adjustment:
3.6.4atmosphere adjustment:
3.6.5 set point adjustment:
3.6.6 monitor common:
3.6.7 control valves:
3.6.8 the 307vgccontrol unit:
3.6.9 vgc control unit front panel
3.6.9.1 units of measure:
3.6.9.2 ion gauge on /off:
3.6.9.3 degas on/off
3.6.9.4 available remote input/output option
3.7 process software
3.8 program pattern
CHAPTER FOUR
4.0 operating procedures, maintenance and trouble shooting
4.1 the operating procedure
4.1.2 close down procedure
4.2maintainance:
4.2.1 trouble shooting flow diagram
4.2.2 safety procedure while using the thyristor controller
CHAPTER FIVE
5.0 CONCLUSION AND RECOMMENDATION
5.1 Conclusion
5.2 Recommendation
REFERENCES