A diesel power plant uses a diesel engine as the prime mover to generate electricity. It typically generates 2-50 MW of power. The main components are the diesel engine, air intake system, fuel supply system, exhaust system, cooling system, lubricating system, and starting system. The diesel engine compresses air which is then mixed with fuel and ignited. The engine is directly coupled to a generator to produce electricity. The plant has advantages of simple design, quick start up, and ability to handle varying loads. Disadvantages include high operating costs, noise issues, and inability to be constructed at a large scale.

2. INTRODUCTION
❑ A generating station in which diesel engine is used as the prime
moverfor the generation of electrical energyis known as diesel
powerstation.
❑ Diesel powerplant is a non –renewableenergy resource .
❑ Diesel power plants produce power in the range of 2 to 50 MW

3. LAYOUT
OF DIESEL
POWER
PLANT

4. COMPONENTS OF DIESEL PLANT
• Diesel Engine
• Air intake system
• Fuel supply system
• Exhaust system
• Cooling system
• Lubricating system
• Starting system

5. 6
DIESEL ENGINE
• Diesel engine is the heart of the Diesel powerplant
• It draws air from the atmosphere and compress in the ratio of 12-20
• At the end of compression fuel is injected and thoroughly mixed
with air
• The diesel engine is directly coupled with the generator

6. AIR INTAKE SYSTEM
• The air required for the combustion of fuel insidethe diesel engine cylinderis
drawn through the air filter
• The purpose of the filters is remove the incoming air
• To improve engineefficiency ,the air supplied must be as cool as possible

7. FUEL SUPPLY SYSTEM
o Fuel supply system is the blood of the diesel engine
o Fuel from the storage tank is pumped through a filterinto a smaller
tank called all day tank
o All day tank supplies the daily fuel need of the engine
o The tank is placed above the engine levelto make the flow by
gravity

8. EXHAUST SYSTEM
o The exhaust system discharges the engine exhaust gas outside the
building
o This exhaust gas from the engine is very noisy . In order to reduce the
noise a silencer is used
o Some good amount of heat in the exhaust gas is recovered as heat
in heat exchanger

9. COOLING SYSTEM
o The heat released by the burning in the engine cylinder is partially
convertedinto work
o The remaining heat passes through the engine components and
may cause damage to system
o In order to lower this temperature water is circulated around the
engine
o The watertakes away heat from the engine and waterbecomes
hot. the hot water is cooled by cooling towersand re-circulated for
cooling

10. LUBRICATING SYSTEM
o This circuit includes lubricating oil tank ,oil pump and oil cooler
o The purpose of the lubrication system is to reduce the wear of the
engine movingparts .parts of the cylindersuch as piston , shafts
,valvesmust be lubricated
o Lubrication also helps to cool the engine

11. STARTING SYSTEM
o The main function of this system is to start the engine from cold
conditionwiththe help of an air compressor.
o Starting of engine can be done by employing following methods
1. By an auxiliary engine
2. By an electric motor
3. By an compressed

12. ADVANTAGE OF DIESEL POWER
PLANT
I. Very simple design also simple installationand occupies less space.
II. Limited cooling water requirement
III. Quickly started and put on load .
IV. It can respond to varying loads without any difficulty
V. There is no problem of ash handling

13. DISADVANTAGE OF DIESEL
POWER PLANT
I. High maintenance ,lubrication cost and operating cost .
II. Fuel cost is more, since in India diesel is costly
III. The life diesel power plant is small.
IV. Noise is a serious problem in diesel plant
V. Diesel powerplant cannot be constructed for large scale

14. THANK YOU