dont think its a new technology,its an old tech.but i made it succesful by my presentation style.some slides are hidden and some some are linked..its a nice presentation

1. Presentation By:
School of Engineering,C.U.S.A.T
Department of Mechanical Engineering

2. Introduction
Fuel- Soul of An Engine
Source of Fuels
Pollution and automobile Fuels
Price of Fuels
Pollution free & Renewable source

3. •Process of
production of icy
cold. ( -150 Degree
Cryogenics
& Cryogenic
Engineering
•Engine which uses
very cold substances
to produce useful
energy.
Cryogenic
Heat Engine

4. Liquid Nitrogen (LN2)
 Nitrogen is the most widely produced & common
cryogen as its available in atmosphere i.e. 78.08%
 At 1 atm pressure LN2 boils at 139.2°R (77.4°K)
and freezes at 113.8°R (63.2°K).
 The liquefaction process is very simple.
 Liquid nitrogen is inert, colorless, odorless, non-
corrosive, nonflammable, and extremely cold.
78%
21%
Proportion
Nitrogen
Oxygen
Other

5. Atmospheric
Air passes
Double Column
Rectification
Dust
Precipitator
Inter cooler
Nozzle
LN2
Insulated chamber
Expansion
Turbo
pumps
Dewar Flask
Liquefaction Of Nitrogen Gas

6.  Normal atmospheric air is passed through dust precipitator and pre-cooled.
 It is then compressed inside large turbo pumps to about 100 atmospheres(10.13 MPa).
 Once the air has been cooled to room temperature it is allowed to expand rapidly
through a nozzle into an insulated chamber.
 By running several cycles the temperature of the chamber becomes low enough. The air
entering it starts to liquefy.
 Liquid nitrogen is removed from the chamber by Linde’s Double Column Rectification
and is stored inside well-insulated Dewar flasks .
Liquefaction Process

7. Schematic Of Cryogenic Heat Engine
Cryogen
storage
vessel
Pump
Economizer
Heat
Exchanger
Expander
Engine

8.  LN2 at 77.4oK is pressurized and then vaporized in a Economizer(heat exchanger) by
temperature of exhaust.
 This economizer like the radiator of a car but instead of using air to cool water, it uses air to
heat and boil liquid nitrogen.
 Liquid N2 passing through the primary heat exchanger quickly reaches its boiling point.
 The vaporized LN2 expands to a gas with a pressure of 150 KPa.
 The pressurized N2 gas drives the motor.
 The only exhaust is nitrogen, which is major constituent of our atmosphere.
 Energy+N2(l)-->N2(g)
 Hence, there is no pollution produced by running this car.
Principle Of Operation

9.  A pressurized tank or Dewar flask to store
liquid nitrogen
 A Pump
 A primary heat exchanger
 An Expander
 An economizer or a secondary heat
exchanger
 Air motor for the power transmission
Main Components Of Engine

10. Schematic Of Liquid Nitrogen Car LN2000

11.  The LN2000 car has a 7hp engine.
 Its maximum speed is over 40 kmph.
 It could travel 79 miles(127.58 km) on a full 24 gallon(90 liter) tank of
liquid nitrogen running at the speed of 32 kmph.

12.  Not a combustible, corrosive or toxic. It is just cold.
 Significant performance and environmental advantages environmental advantages
over electric vehicles.
 Much lighter and refilling its tank will take only 10-15 minutes.
 The exhaust produced by the car is environmental friendly.
 A cryogenic car could have three times the range of an electric car of the same weight
and no battery disposal concerns .
 For Nitrogen, Liquid to Gas expansion ratio is 1:694, thus resulting in tremendous
energy merely during phase change.
Advantages

13.  Not available in public refueling stations.
 Turning N2 gas into a liquid requires a lot of energy.
 The N2 passing through the tubes of the heat exchanger is so cold
that the moisture in the surrounding air would condense on the
outside of the tubes, obstructing the air flow.
 Then there's the safety issue. Should a nitrogen car be kept in a
poorly ventilated space and, if the Nitrogen leaks off, it could prove
fatal.
Disadvantages

14.  Safety issues have not been sorted out as yet.
 Lack of funds for research.

15.  More Cryogenic cars brings cleaner atmosphere.
 Refueling in few minutes
 Scope for exploiting abundantly available resource

16. References
Reference:-
http://docslide.us/documents/cryocar.html
http://seminarprojects.com/Thread-seminar-report-on-cryocar
“Liquid Nitrogen as a Non-Polluting Vehicle Fuel”, Mitty c. Plummer,
Carlos A. Ordonez and Richard F. Reidy, University of North Texas.
“Liquid Nitrogen”, Wikipedia Online Encyclopedia, Sept. 13, 2007
<http://en.wikipedia.org/wiki/Liquid nitrogen>.
“LN2000”, University of Washington Research Team, Sept. 18, 2007
<http://www.aa.washington.edu/AERP/CRYOCAR/CryoCar.htm>.
“Liquid Nitrogen Car”, University of Washington, May 2, 2011
< https://www.youtube.com/watch?v=uV5YsAdA9Lg
>http://seminarprojects.com/Thread-cryocar?page=2#ixzz3hD0lobyV