cryocar ln2 vehicle
TRANSCRIPT
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BHARATI VIDYAPEETH INSTITUTE OF TECHNOLGY
Department of mechanical engineeringPresentation on-
CRYOCARPresented By-
Dilip Thakur & Nikhil Boble
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Introduction:
Use of alternate resources
PollutionHuman greed
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CRYOCAR
uses
Cryogenic fuel
like
Liquid Nitrogen
What is liquid nitrogen vehicle?
Cryogenic fluid as a working fluid
Cryogenic substance is used as a heat sink
CRYOGENICS
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Why Liquid Nitrogen?
• Liquid nitrogen is the liquefied form of the element “nitrogen” that is commercially produced by fractional distillation of liquid air.
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Dust Precipitator
Inter Cooler
Nozzle
Insulated Chamber
LN2
Turbo Pumps
Air Inlet
Fractional
distillation
Dewar Flask
Formation Of LN2:
Expansion
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Main Components of the Engine:
Dewar Flask
Heat Exchanger
Pressurant Bottles
Air Motor
Economizer
Exhaust
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Working Principle:
Cryogen storage vessel
Pump
EconomizerHeat Exchanger
Expander Engine
EXHAU
ST
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Efficiency:
The first LN2 car could travel 79 miles (127.58 km) on a full 24 gallon (90 liter) tank of liquid nitrogen going 32 Kmph.
Its maximum speed was over 56 Kmph.
After further Researches, the Efficiency has improved as follows: Power : 78KW or 104.5bhp @ 97Kmph 400 Liters (106 gallon) gives a mileage of 560Km and weighs
280Kg Operating Cost is around 2.4cents per Km( Re 1 per Km)
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Advantages:
• Car is much lighter in weight
• Refilling its tank takes only 15 minutes.
• Eco-friendly• Minimal Maintenance
Costs
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• Requires a lot of energy• Gas is so cold that the
moisture in the surrounding air would condense on the outside of the tubes.
• Safety issue
• Leakage of N2 leads to prove fatal.
Disadvantages:
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Even though the technology is 10 to 12 years old, still it has not come to the market for two reasons:
• Safety issues have not been sorted out as yet.
• Lack of funds for research.
Why not commercialized?
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Probable Solutions:
• A tube within a tube design.• N2 passes back and forth inside a set of three nested
tubes. • By the time it reaches the outermost tubes, the N2 is
warm enough that the exterior wall of the tube remains above the freezing point of water.
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Conclusion:
• In a real sense, the more such vehicles are used, the cleaner the air will become.
• In addition to the environmental impact of these vehicles, refueling using current technology can take only a few minutes, which is very similar to current gas refueling times.
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References:
• “LN2000”, University of Washington Research Team, Sept. 18, 2007
• “Liquid Nitrogen”, Wikipedia Online Encyclopedia.• www.slideshare.com• www.authorstream.com• www.royalauto.in
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THANK YOU!