1786143_635025385764787500

8/11/2019 1786143_635025385764787500

http://slidepdf.com/reader/full/1786143635025385764787500 1/16

A Compressed Air Vehicle

( Presentation for partial fulfillment of final year

project)

Presented by:- Manish Kumar

(From Department of Mechanical Engg.)

8/11/2019 1786143_635025385764787500


Introduction:-

We are living in a very mobile society so light utility vehicles (LUV) like bikesand cars are becoming very popular means of independent transportation forshort distances. Petrol and diesel which have been the main sources of fuel inthe history of transportation, are becoming more expensive and impractical(especially from an environmental standpoint). Such factors are leading vehicle manufacturers to develop vehicles fueled by alternative energies.

When at present level of technological development fuel-less flying (likebirds) i.e., flying based on the use of bio-energy and air power in theatmosphere seems to be almost impossible for human beings then engineersare fascinated at least with the enormous power associated with the humanfriendly as well as tested source of energy (i.e., air) to make air-powered vehicles as one possible alternative. Engineers are directing their sincere

efforts to make use of air as an energy source to run the LUVs which willmake future bikes and light/small cars running with air power for dailyroutine distances and the travel will be free from pollution and cost effective.

8/11/2019 1786143_635025385764787500


History or Origin:-

Mankind has been making use of uncompressed airpower from

centuries in different application viz., windmills, sailing, balloon car,hot air balloon flying and hang gliding etc.

The use of compressed air for storing energy is a method that is not

only efficient and clean, but also economical and has been used sincethe 19th century to power mine locomotives, and was previously thebasis of naval torpedo propulsion.

8/11/2019 1786143_635025385764787500


Engine

Compressed

Air Tank Power

Transmition

Construction Details:

8/11/2019 1786143_635025385764787500


Working of Compressed Air Vehicle:-

In principle the technology is very similar to the internal

combustion system -compressed air is used to drive apiston in a barrel.

It compress air to high pressures in a staged process. It simply reverse the process -decompress the air in

stages and in so doing efficiently release energy at eachpoint in the chain.

8/11/2019 1786143_635025385764787500


Main parts:-

Air Engine

Air Tank

Compressed Air

8/11/2019 1786143_635025385764787500


Air Engine:-

8/11/2019 1786143_635025385764787500


Air Tank:-

8/11/2019 1786143_635025385764787500


Compressed Air:-

Compressed air is air kept under a pressure that is greater than

atmospheric pressure.

The Density of air is 1000 Kg/m3 at 1 atm(1.01325 bar).

Air at 30 MPa (4,500 psi) contains about 50 Wh of energy per liter

(and normally weighs 372g per liter).

In order to increase energy density, some systems may use greatercompressibility than air when it transitions gases that can be liquefied

or solidified. "CO2 offers far from gaseous to supercritical form."

If 1.0 m3 of ambient air is very slowly compressed into a 5 L bottle at20 MPa (200 bar), the potential energy stored is 530 kJ.

8/11/2019 1786143_635025385764787500


Advantages:-

In comparison to petrol or diesel powered vehicles “air powered vehicles” havefollowing advantages:

Refueling can be done at home using an air compressor or at service stations. Theenergy required for compressing air is produced at large centralized plants, making itless costly and more effective to manage vehicle on emissions than from individual vehicles.

Compressed air engines reduce the cost of vehicle production, because there is noneed to build a cooling system, spark plugs, starter motor, or mufflers. The rate of self-discharge is very low opposed to batteries that deplete their charge

slowly over time. Therefore, the vehicle may be left unused for longer periods of timethan electric vehicles.

Expansion of the compressed air lowers its temperature; this may be exploited for useas air conditioning.

Reduction or elimination of hazardous chemicals such as gasoline or batteryacids/metals

Some mechanical configurations may allow energy recovery during braking bycompressing and storing air.

8/11/2019 1786143_635025385764787500


8/11/2019 1786143_635025385764787500


Safety For Humans:-

As compressed air is not combustible as the other fuels, so its very

safe to carry a compressed air tank then a CNG tank, Gasolinetank or any other combustible or toxic fuel tank.

8/11/2019 1786143_635025385764787500


Why A Compressed Air Vehicle:-

Compressed-air vehicles are comparable in many ways even toelectric vehicles and their potential advantages over electric vehiclesinclude:

Compressed-air vehicles are unconstrained by the degradationproblems associated with current battery systems.

Much like electrical vehicles, air powered vehicles would ultimately bepowered through the electrical grid which makes it easier to focus onreducing pollution from one source, as opposed to the millions of vehicles on the road.

Compressed-air tanks can be disposed of or recycled with lesspollution than batteries.

The tank may be able to be refilled more often and in less time thanbatteries can be recharged, with refueling rates comparable to liquidfuels.

8/11/2019 1786143_635025385764787500


The tanks used in a compressed air motor have a longer lifespan in

comparison with batteries, which, after a while suffer from a reduction

in performance.

8/11/2019 1786143_635025385764787500


Conclusion:

Compressed air for vehicle propulsion is already being explored andnow air powered vehicles are being developed as a more fuel-efficientmeans of transportation.

Some automobile companies are further exploring compressed airhybrids and compressed fluids to store energy for vehicles which mightpoint the way for the development of a cost effective air powered

vehicles design.

Unfortunately there are still serious problems to be sorted out beforeair powered vehicles become a reality for common use but there is ahope that with the development in science & technology wellsupported by the environmental conscious attitude and need to replacecostly transportation methods, air-powered vehicles will definitely seethe light of the day.

8/11/2019 1786143_635025385764787500


Thanks You:-

1786143_635025385764787500

Documents

Transcript of 1786143_635025385764787500