Compressed Natural Gas Essay, Research Paper
Compressed Natural Gas or CNG is going and progressively attractive fuel for
many transit utilizations. One ground for the addition in involvement in CNG is that
the emanations of a CNG vehicle are far less than that of a gas powered engine.
Other factors that make the production of CNG vehicle? s is that the gas monetary values
have risen in the past twosome old ages.
Handiness
Natural gas is, good, natural gas & # 8211 ; the same material that heats your range or your
house. It is mostly produced domestically in the United States ; it can be imported
through grapevines or as a super-cold liquid on particular oiler ships, but because
this is a batch harder than pouring petroleum or refined oil into a oiler or a grapevine, we
haven & # 8217 ; T built up an import dependence for natural gas as we have for crude oil.
Natural gas is distributed nationally through an extended web of grapevines,
which feed electrical coevals workss and domestic and industrial warming utilizations.
In order to hive away a sensible sum of fuel natural gas has to be compressed to
about 200 times atmospheric force per unit area & # 8211 ; or even more for the armored combat vehicles aboard big
coachs! This is like the force per unit area a stat mi and a one-fourth under the ocean.
Advantages
It is really easy on the engine, giving longer service life and lower care
costs. CNG is the least expensive alternate fuel when you compare equal
sums of fuel energy such as gasolene. Because there is a immense and predictable
demand for natural gas from domestic, industrial, and public-service corporation users, there is a big
buffering consequence against monetary value fluctuations. At the extremum of the large gasolene
monetary value runup in April, 1996, everyone was paying half as much for a gasoline-
gallon-equivalent of 130-octane natural gas as I would hold assistance for a gallon of 92-
octane unleaded gasolene! You get significantly better fuel economic system on the unfastened
route because the high octane evaluation of the fuel allows timing and mixture to be
adjusted for more efficiency without doing explosion ( & # 8221 ; strike harding & # 8221 ; ) . And
because the fuel armored combat vehicles have to defy such tremendous internal force per unit areas, they
are improbably tough, with good consequences or safety
. In add-on, because natural gas
is lighter than air and has really narrow flammability bounds, if a leak develops it is
really likely that the fuel will disperse harmlessly into the air without doing a
danger of ignition or detonation. Natural gas has, over the class of the 1990 & # 8217 ; s,
proven to be the most effectual fuel for cut downing emanations in an internal
burning engine. Other cardinal advantages is the emanations that a CNG vechile is far
less than that of a gasolene driven auto. The catalytic convertor developed for the NGV
had a 1.24 L volume and was composed of palladium/platinum. The exhaust emanations
measured under lastingness running for gasoline and CNG fuels are shown in Table below:
DistanceCONMOGNOx
CNG4 K miles0.210.0160.06
50 K miles0.440.0230.11
Petrol4 K miles0.690.0280.05
50 K miles0.790.0550.07
It can be seen that the CO and NMOG degrees for the NGV are really favorable while
NOx is more for a CNG vechile.
Disadvantages
Some of the disadvantages are that the armored combat vehicles are rather bulky and heavy.
Locations of the armored combat vehicles is another concern from seting them in the bole to seting
them underneath the vehicle. Some other jobs that affect usage of widespread CNG
is the deficiency of refueling Stationss available to refuel and CNG vechile. High capital costs
are involved in puting up a web of refuelling Stationss. This presents jobs that
must be resolved in the early phases of a national development programme. The build-
up of usage at a new public station may be slow, with correspondingly long times for a
return on capital. Another dissadvantage is that cost to change over the vechile. The first
cost of a transition will be in the scope $ 1,000 to $ 3,500 and the payback from two
to seven old ages, depending on one-year milage. Any future decreases in the cost of
lightweight cylinders will hold an of import consequence on the transition cost.
hypertext transfer protocol: //www.greentie.org/class/ixe03. htm
hypertext transfer protocol: //www.drvenergy.com/
hypertext transfer protocol: //www.energy.ca.gov/afvs/ngv/index.html
hypertext transfer protocol: //www.eintoday.com/
hypertext transfer protocol: //www.pressedsteel.com/
hypertext transfer protocol: //www.clair.org/CNG.htm
hypertext transfer protocol: //www.cganet.com/
