PowerPoint Presentation
Nuclear Propulsion System
Introduction
In ancient times the human kind used the ships to travel across
the Continents to find new countries. Later with the development of
the civilization they tried to capture new countries.
So if he has to win the battle he has to be more efficient in
the battle then he has to find some other way then he tend to use
the fossil fuel (diesel, petrol, etc. ) as the main source of
energy.
But it needed much space to carry these liquid fuel which cause
the ship to carry an extra weight. The they came across the nuclear
energy which made him with the use of small amount of fuel he is
able to travel a huge distance.
Types of Methods that are use to propel the shipsWind.
Fossil fuels (diesel, petrol etc..).
Steam engines.
Nuclear power.
Steam Engines Stem engines were first used for this purpose. The
earliest type of steam propulsion was of the external combustion
reciprocating (single expansion) type. The deficiencies of this
type of steam engine were partially overcome with the compound
steam engine, which was nearly universally accepted for marine
propulsion applications.
Why Nuclear power is needed?
Needed to reduce the space.
Wanted to get more power using a small amount of fuel.
When using fossil fuel (diesel, petrol etc) these fuels need to
use oxygen (O2) for the combustion of fuel so the submarines are
often needed to come to the water surface to refill the oxygen
level.
Naval ships (submarines, war ships ) wanted to stay at the sea
for longer time without refilling of fuel within a short period of
time.
Wanted to get a solution for the energy crisis.
Nuclear Reactorsproducing steam are used to propel warships and
icebreakers, and there have been attempts to utilize them to power
commercial vessels.
Nuclear PropulsionNuclear-powered ships and submarines use a
nuclear reactor to create steam and either use a steam turbine
directly for main propulsion, with generators providing auxiliary
power, or else employ turbo-electric propulsion, where the steam
drives a turbine-generator set with propulsion provided by electric
motors.
Arrangement of nuclear propulsion in ships
Nuclear Propulsion
Working Principle
Why is nuclear marine propulsion is a good idea?Amongst all the
speculations and standing doubts about use of marine propulsion
system based on nuclear energy, there are some key factors that
make this a good idea, whatever way you look at it.In the current
scenario of extreme fuel shortage, nuclear ships are the answer
that everyone has been looking for. Energy produced from nuclear
reactions is immense which can be used easily.
Since amount of energy produced in every reaction is quite
large, a single time energy production can be used for a propulsion
ship for a long time. Nuclear ships offer a refilling solution of
as less as once a month. This could make shipping a speedy and
hassle free process.
A nuclear reactor is designed to produce energy under controlled
conditions. It is compact and can be moved around easily. So
apprehensions about practicality of a nuclear reactor on ships,
boats and vessels can be put to a rest.
Fuel efficiency of nuclear propulsion engines is more than most
of the fuels currently in use. This means that amount of energy
derived from nuclear reactions per unit weight is more than any
other fuel.
The better power to weight ratio means that nuclear ships can
have better weight carrying capacity than other ships, offering
quicker traveling over longer distances with greater load.
Nuclear ships tackle problem of air pollution too as there is no
production of undesirable smoke or particular pollutants that have
become a menace all over the world.
Nuclear military ships like submarines can survive for months
underwater without feeling the need to resurface for refueling.
This can make combative forces much more efficient.
Disadvantages of using Nuclear propulsion.Large shielding is
required to prevent the radiation.
Because of that (putting large protection shield) the production
cost is high.
Specially trained boat crew is needed.
With a small failure the affect to the environment is high.
Any failure in the system can cause a huge explosion.
