MARTHANDAM COLLEGE OF

ENGINEERING AND TECHNOLOGYKUTTAKUZHI

DEPARTMENT OF

ELECTRICAL AND ELECTRONICS ENGINEERING

Presented by:-

SANGEETH SOMAN

961611105309

L12EEE57

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 2to 50MW.

SIMPLE LAYOUT

LAYOUT

DIESEL PLANT COMPONENTS

Diesel Engine

Air intake system

Fuel supply system

Exhaust system

Cooling system

Lubricating system

Starting system

DIESEL ENGINE

Diesel engine is the heart of the Diesel power plant.

It draws air from the atmosphere and compress inthe ratio of 12-20.

At the end of compression, fuel is injected andthoroughly mixed with air.

The diesel engine is directly coupled with thegenerator.

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.

FUEL SUPPLY SYSTEM

Fuel supply system is the blood of the diesel engine.

Fuel from the storage tank is pumped through afilter into a smaller tank called all day tank .

All day tank supplies the daily fuel need of theengine.

The tank is placed above the engine level to makethe fuel flow by gravity.

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.

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.

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.

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

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.

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.

THANK YOU…