Presentation is about advanced pollution less engine for next generation.

1. WELCOME

2. SESHASAYEE INSTITUTE OF TECNOLOGY
PAPER PRESENTATION
ON
ADVANCED POLLUTION LESS ENGINE-
STIRLING ENGINE
SUBMITTED BY
P.FRANCIS MARCIAN

3. CONTENTS:
• INTRODUCTION
• STIRLING ENGINE
• MAIN COMPONENTS
• CONFIGURATIONS
• ADVANTAGES
• DISADVANTAGES
• APPLICATIONS
• CONCLUSION

4. INTRODUCTION:
INVENTOR=ROBERT STIRLING
STIRLING INVENTED STIRLING ENGINE IN 1816
WHICH COULDNOT EXPLODE AND PRODUCE MORE
POWER THAN THE STEAM ENGINE.SOUGHT TO REPLACE
THE STEAM ENGINE OF HIS DAYS DUE TO FREQUENT
EXPLOSION CAUSED BY UNSUSTAINABLE HIGH
PRESSURE AND IT CAUSES INJURY TO WORKERS.

5. STIRLING ENGINE

6. WHAT IS STIRLING ENGINE?
STIRLING ENGINE IS AN EXTERNAL
COMBUSTION ENGINE WHICH CONVERTS HEAT
ENERGY TO MECHANICAL POWER.IT USES A FIXED
AMOUNT OF GAS SEALED INSIDE A CYLINDER.THE
EXPANSION AND CONTRACTION OF THE GAS
USING HEAT FROM EXTERNAL SOURCE,CREATES
USEFULL WORK.

7. HOW DOES A STIRLING
ENGINE WORKS?
• ISOTHERMAL COMPRESSION(CONSTANT
TEMPERATURE): STAGE1 WHERE THE VOLUME
OF GAS DECREASES AND PRESSURE INCREASES.
• ISOVOLUMETRIC HEATING(CONSTANT VOLUME):
STAGE2 VOLUME OF GAS REMAINS CONSTANT.

8. • ISOTHERMAL EXPANSION
(CONSTANT TEMPERATURE):
STAGE3 VOLUME INCREASES
PRESSURE DECREASES.
• ISOVOLUMETRIC
COOLING(CONSTANT
VOLUME): STAGE4 VOLUME
OF THE GAS REMAINS
CONSTANT.

9. MAIN COMPONENTS:
• POWER PISTON-SMALL TIGHTLY SEALED
PISTON THAT MOVES UP WHEN THE GAS
INSIDE THE ENGINE EXPANDS.
• DISPLACER PISTON-LARGER PISTON AND IT
IS LOOSE IN ITS CYLINDER SO AIR CAN
MOVE BETWEEN HEATED AND COOLED
SECTIONS OF THE ENGINE AS THE
DISPLACER MOVES UP AND DOWN.

10. CONFIGURATIONS:
• THERE ARE 3 MAJOR TYPES OF STIRLING ENGINE:
• THE ALPHA CONFIGURATION.
• THE BETA CONFIGURATION.
• THE GAMMA CONFIGURATION.

11. THE ALPHA CONFIGURATION
• THERE ARE TWO CYLINDERS.
• THE EXPANSION OF CYLINDER(RED)IS
MAINTAINED AT HIGH TEMPERATURE.
• WHILE THE COMPRESSION CYLINDER(BLUE) IS
COOLED.
• THE PASSAGE THE TWO CYLINDER CONTAINS
THE REGENERATOR.

12. THE BETA CONFIGURATION:
• THERE IS ONLY ONE CYLINDER HOT AT
ONE END AND COLD AT THE OTHER END.
• THE DISPLACER SHUNTS THE AIR
BETWEEN THE HOT AND COLD ENDS OF
THE CYLINDER.
• THE POWER PISTON AT THE END OF THE
CYLINDER DRIVES THE FLYWHEEL.

13. THE GAMMA CONFIGURATION
• THE MAJORITY OF THE AIR IS OVER THE HOTSIDE
OF THE ENGINE AND LOW WHEN THE MAJORITY
OF AIR IS ON THE COLD SIDE OF THE ENGINE.
• THESE INCREASES AND DECREASES IN PRESSURE
ARE TRANSFERRED TO THE POWER CLYINDER BY
MEANS OF A SMALL TUBE.
• LOW PRESSURE SUCKS THE PISTON TO RIGHT.AND
HIGH PRESSURE FORCES THE PISTON TO LEFT.

14. ADVANTAGES:
1. VARIOUS HEAT SOURCES(SOLAR,NUCLEAR ENAERGY).
2. ENVIRONMENTAL FRIENDLY.
3. HEAT IS EXTERNAL BURNING OF FUEL-AIR MIXTURE
CAN BE ACCURATELY CONTROLLED.
4. OPERATES AT LOW PRESSURE AND IT IS SAFER THAN
THE STEAM ENGINE.

15. DISADVANTAGES:
• THE PRICE: IT’S COST IS PROBABLY THE MOST
IMPORTANT PROBLEM,IT IS NOT YET COMPETITIVE WITH
OTHER MEANS ESTABLISHED.
• THE IGNORANCE OF THIS TYPE OF ENGINE BY THE
PUBLIC.ONLY FEW FANS KNOW ITS EXIST.
• SEALING PROBLEMS.
• LACK OF FLEXIBLITY.

16. APPLICATIONS:
• WATER PUMP STATIONS.
• COMBINED HEAT AND POWER PLANT.
• SOLAR POWER GENERATION.
• AIRCRAFT ENGINES.
• MARINE ENGINES.
• NUCLEAR POWER PLANT.

17. APPLICATION IN NUCLEAR POWER PLANT:
REPLACING THE STEAM TURBINES OF THE
NUCLEAR POWER PLANT MIGHT SIMPLY THE PLANT YIELD
GREATER EFFICIENCY,AND REDUCE THE RADIOACTIVITY AS
BYPRODUCTS.

18. CONCLUSION:
• THE STIRLING ENGINE IS NOTED FOR ITS HIGH
EFFICIENCY COMPARED TO STEAM ENGINES,QUIET
OPERATIONS.
• EASY TO INSTALL.
• NOT MUCH POPULAR.
• PATENTED SECRET CONSTRUCTION TECHNOLOGY.

19. ANY QUERIES?

20. THANK YOU….