The document discusses the components and operation of a diesel power plant. It describes the key components as the diesel engine, air intake and filtration system, fuel supply system, exhaust system, cooling system, lubrication system, and starting system. The diesel engine compresses air which is then mixed with injected fuel and ignited to power a generator. The plant has advantages of simple design, limited water needs, and ability to respond quickly to load changes, but also has higher maintenance costs and noise compared to other power sources.

1. MARTHANDAM COLLEGE OF
ENGINEERING AND TECHNOLOGY
KUTTAKUZHI
DEPARTMENT OF
ELECTRICAL AND ELECTRONICS ENGINEERING
Presented by:-
SANGEETH SOMAN
961611105309
L12EEE57

3. INTRODUCTION
 A generating station in which diesel engine is used
as the prime mover for the generation of electrical
energy is known as diesel power station.
 Diesel power plant is a non-renewable energy
resource.
 Diesel power plants produce power in the range of 2
to 50MW.

4. SIMPLE LAYOUT

5. LAYOUT

6. DIESEL PLANT COMPONENTS
 Diesel Engine
 Air intake system
 Fuel supply system
 Exhaust system
 Cooling system
 Lubricating system
 Starting system

7. DIESEL ENGINE
 Diesel engine is the heart of the Diesel power plant.
 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.

8. AIR INTAKE SYSTEM
 The air required for the combustion of fuel inside
the diesel engine cylinder is drawn through the air
filter.
 The purpose of the filter is to remove dust from the
incoming air.
 To improve engine’s efficiency, the air supplied
must be as cool as possible.

9. FUEL SUPPLY SYSTEM
 Fuel supply system is the blood of the diesel
engine.
 Fuel from the storage tank is pumped through a
filter into a smaller tank called all day tank .
 All day tank supplies the daily fuel need of the
engine.
 The tank is placed above the engine level to make
the fuel flow by gravity.

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

11. COOLING SYSTEM
 The heat released by the burning of fuel in the engine
cylinder is partially converted into work.
 The remaining heat passes through the engine
components and may cause damage to system.
 In order to lower this temperature water is circulated
around the engine.
 The water takes away heat form the engine and
water becomes hot. The hot water is cooled by
cooling towers and re-circulated for cooling.

12. LUBRICATING SYSTEM
 This circuit includes lubricating oil tank , oil pump
and oil cooler.
 The purpose of the lubrication system is to reduce
the wear of the engine moving parts . Parts of the
cylinder such as piston , shafts , valves must be
lubricated.
 Lubrication also helps to cool the engine.

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

14. ADVANTAGE OF DIESEL POWER PLANT
i. Very simple design also simple installation and
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. Smaller storage is needed for the fuel.
vi. Layout of power plant is quite simple.
vii. There is no problem of ash handling.

15. 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 of diesel power plant is small.
iv. Noise is a serious problem in diesel power
plant.
v. Diesel power plant cannot be constructed for
large scale.

16. THANK YOU…