Compressed natural gas - Revision history

Jmdonev: 1 revision imported

2026-07-02T20:55:24Z

1 revision imported

← Older revision	Revision as of 20:55, 2 July 2026
(No difference)

energy>Jmdonev at 17:41, 4 June 2026

2026-06-04T17:41:07Z

← Older revision		Revision as of 17:41, 4 June 2026
Line 1:		Line 1:
	[[Category:Done ~~2018~~-06-15]]		[[Category:Done 2026-07-01]]
	[[File:640px-Carroagas.jpg\|400px\|framed\|right\|Figure 1. Compressed natural gas in a vehicle.<ref>Wikimedia Commons. (June 3, 2015). ''Carroagas'' [Online]. Available: http://fr.wikipedia.org/wiki/Gaz_naturel_pour_v%C3%A9hicules#/media/File:Carroagas.jpg</ref>]]		[[File:640px-Carroagas.jpg\|400px\|framed\|right\|Figure 1. Compressed natural gas in a vehicle.<ref>Wikimedia Commons. (June 3, 2015). ''Carroagas'' [Online]. Available: http://fr.wikipedia.org/wiki/Gaz_naturel_pour_v%C3%A9hicules#/media/File:Carroagas.jpg</ref>]]
	<onlyinclude>'''Compressed natural gas''' or '''CNG''' is simply [[natural gas]] mainly comprised of [[methane]] that is stored under high [[pressure]]s (while remaining in its [[gas\|gaseous]] form), mainly as a means to transport it, or as storage for later use as vehicle fuel.</onlyinclude> In this form it remains clear, odourless, and non-corrosive.<ref name="RE1">Consumer Energy Center. (June 3, 2015). ''Compressed Natural Gas'' [Online]. Available: http://www.consumerenergycenter.org/transportation/afvs/cng.html</ref> CNG is used widely as an alternative fuel for vehicles as it has a fairly high [[octane rating]]. CNG is not to be confused with [[liquefied natural gas]], which has been turned into a [[liquid]]—and must be at very low [[temperature]]s. Although it's still in its gaseous form, compressed natural gas is under more pressure and thus takes up a smaller [[volume]] than ordinary natural gas (but more volume than LNG).		<onlyinclude>'''Compressed natural gas''' or '''CNG''' is simply [[natural gas]] mainly comprised of [[methane]] that is stored under high [[pressure]]s (while remaining in its [[gas\|gaseous]] form), mainly as a means to transport it, or as storage for later use as vehicle fuel.</onlyinclude> In this form it remains clear, odourless, and non-corrosive.<ref name="RE1">Consumer Energy Center. (June 3, 2015). ''Compressed Natural Gas'' [Online]. Available: http://www.consumerenergycenter.org/transportation/afvs/cng.html</ref> CNG is used widely as an alternative fuel for vehicles as it has a fairly high [[octane rating]]. CNG is not to be confused with [[liquefied natural gas]], which has been turned into a [[liquid]]—and must be at very low [[temperature]]s. Although it's still in its gaseous form, compressed natural gas is under more pressure and thus takes up a smaller [[volume]] than ordinary natural gas (but more volume than LNG).

Jmdonev: 1 revision imported

2018-06-25T14:30:25Z

1 revision imported

← Older revision	Revision as of 14:30, 25 June 2018
(No difference)

Jmdonev at 19:35, 6 June 2018

2018-06-06T19:35:55Z

← Older revision		Revision as of 19:35, 6 June 2018
Line 1:		Line 1:
	[[Category:Done ~~2015~~-06-11]]		[[Category:Done 2018-06-15]]
	[[File:640px-Carroagas.jpg\|400px\|framed\|right\|Figure 1. Compressed natural gas in a vehicle.<ref>Wikimedia Commons. (June 3, 2015). ''Carroagas'' [Online]. Available: http://fr.wikipedia.org/wiki/Gaz_naturel_pour_v%C3%A9hicules#/media/File:Carroagas.jpg</ref>]]		[[File:640px-Carroagas.jpg\|400px\|framed\|right\|Figure 1. Compressed natural gas in a vehicle.<ref>Wikimedia Commons. (June 3, 2015). ''Carroagas'' [Online]. Available: http://fr.wikipedia.org/wiki/Gaz_naturel_pour_v%C3%A9hicules#/media/File:Carroagas.jpg</ref>]]
	<onlyinclude>'''Compressed natural gas''' or '''CNG''' is simply [[natural gas]] ~~- with the main component being~~ [[methane]] - that is stored under high [[pressure]]s (while remaining in its [[gas\|gaseous]] form) mainly as a means to transport it or as storage for later use as a vehicle fuel.</onlyinclude> In this form, it remains clear, odourless, and non-corrosive.<ref name="RE1">Consumer Energy Center. (June 3, 2015). ''Compressed Natural Gas'' [Online]. Available: http://www.consumerenergycenter.org/transportation/afvs/cng.html</ref> CNG is used widely as an alternative fuel for vehicles as it has a fairly high [[octane rating]]. CNG is not to be confused with [[liquefied natural gas]], which has been turned into a [[liquid]] ~~(and LNG~~ must ~~also~~ be at very low [[temperature]]s). Although still in its gaseous form, compressed natural gas is under more pressure and thus takes up a smaller [[volume]] than ordinary natural gas (but more volume than LNG).		<onlyinclude>'''Compressed natural gas''' or '''CNG''' is simply [[natural gas]] mainly comprised of [[methane]] that is stored under high [[pressure]]s (while remaining in its [[gas\|gaseous]] form), mainly as a means to transport it, or as storage for later use as vehicle fuel.</onlyinclude> In this form it remains clear, odourless, and non-corrosive.<ref name="RE1">Consumer Energy Center. (June 3, 2015). ''Compressed Natural Gas'' [Online]. Available: http://www.consumerenergycenter.org/transportation/afvs/cng.html</ref> CNG is used widely as an alternative fuel for vehicles as it has a fairly high [[octane rating]]. CNG is not to be confused with [[liquefied natural gas]], which has been turned into a [[liquid]]—and must be at very low [[temperature]]s. Although it's still in its gaseous form, compressed natural gas is under more pressure and thus takes up a smaller [[volume]] than ordinary natural gas (but more volume than LNG).

	==Storage and Transport==		==Storage and Transport==
Line 7:		Line 7:

	==Use as an Alternative Fuel==		==Use as an Alternative Fuel==
	CNG can be used as a [[gasoline]] alternative in a number of different vehicles and many commercial vehicles have recently become CNG fueled. Vehicles of any ~~sizes~~ from sedans to heavy-duty transit vehicles like buses and street sweepers can be fueled by CNG.<ref name="RE1"/> Currently, natural gas powers more than 12 million vehicles on the road with about 250,000 of these located in the United States.<ref name="RE3">CNG Now. (June 4, 2015). ''What is CNG?'' [Online]. Available: http://www.cngnow.com/what-is-cng/Pages/default.aspx</ref>		CNG can be used as a [[gasoline]] alternative in a number of different vehicles and many commercial vehicles have recently become CNG fueled. Vehicles of any size from sedans to heavy-duty transit vehicles like buses and street sweepers can be fueled by CNG.<ref name="RE1"/> Currently, natural gas powers more than 12 million vehicles on the road with about 250,000 of these located in the United States.<ref name="RE3">CNG Now. (June 4, 2015). ''What is CNG?'' [Online]. Available: http://www.cngnow.com/what-is-cng/Pages/default.aspx</ref>

	There are several benefits to using natural gas as an alternative fuel for transportation. ~~In the US~~, ~~the fact that more than~~ 99% of the natural gas ~~used~~ comes from ~~domestic or~~ North ~~American sources is a major benefit because of the heavy~~ reliance ~~of the economy~~ on ~~foreign~~ oil.<ref name="RE1"/> ~~Additionally, it~~ burns more cleanly than gasoline or [[diesel]] ~~fuel - showing~~ an average reduction in [[emission]]s of 80% as compared to gasoline vehicles.<ref name="RE1"/> Additionally, current estimates say that compressed natural gas costs about 40% less than gasoline.<ref name="RE1"/>		There are several benefits to using natural gas as an alternative fuel for transportation. For example, 99% of the natural gas the US produces comes from somewhere in North America. Moving to CNG would reduce their reliance on oil from overseas.<ref name="RE1"/> It burns more cleanly than gasoline or [[diesel]] fuel—showing an average reduction in [[emission]]s of 80% as compared to gasoline vehicles.<ref name="RE1"/> Additionally, current estimates say that compressed natural gas costs about 40% less than gasoline.<ref name="RE1"/>

	==Safety==		==Safety==
	Natural gas is [[flammable]], however a leak is not always extraordinarily dangerous. Because natural gas is lighter than [[air]], it quickly dissipates when it leaks out of a tank and it is only flammable when the air/natural gas mixture is 5-15% natural gas.<ref name="RE1"/> Additionally, a sulfur-based [[mercaptan]] ~~- an~~ [[odourant]] ~~- is~~ added to make leaks more simple to detect.<ref name="RE2"/> This narrow flammability range makes it a safe fuel to use, but strict safety standards exist to make CNG powered vehicles as safe as those powered by gasoline.<ref name="RE3"/> There are some safety concerns with large buses fueled by CNG compared to [[diesel]] buses. One of these is a longer breaking distance due to the added weight of the fuel storage system. Finally, the composition of natural gas itself can be an issue. CNG is mainly [[methane]] ~~- a~~ [[greenhouse gas]] ~~- which~~ could contribute to [[climate change]] if a leak existed.		Natural gas is [[flammable]], however a leak is not always extraordinarily dangerous. Because natural gas is lighter than [[air]], it quickly dissipates when it leaks out of a tank and it is only flammable when the air/natural gas mixture is 5-15% natural gas.<ref name="RE1"/> Additionally, a sulfur-based [[mercaptan]]—an [[odourant]]—is added to make leaks more simple to detect.<ref name="RE2"/> This narrow flammability range makes it a safe fuel to use, but strict safety standards exist to make CNG powered vehicles as safe as those powered by gasoline.<ref name="RE3"/> There are some safety concerns with large buses fueled by CNG compared to [[diesel]] buses. One of these is a longer breaking distance due to the added weight of the fuel storage system. Finally, the composition of natural gas itself can be an issue. CNG is mainly [[methane]] —a [[greenhouse gas]]—which could contribute to [[climate change]] if a leak existed.

			==For Further Reading==
			*[[Natural gas]]
			*[[Liquefied natural gas]]
			*[[Alternative fuel vehicle]]
			*[[Greenhouse gas]]
			*[[Climate change]]
			*Or explore a [[Special:Random\| random page]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:30:56Z

1 revision imported

← Older revision	Revision as of 21:30, 26 August 2015
(No difference)

J.williams at 16:52, 12 August 2015

2015-08-12T16:52:58Z

New page

[[Category:Done 2015-06-11]]
[[File:640px-Carroagas.jpg|400px|framed|right|Figure 1. Compressed natural gas in a vehicle.<ref>Wikimedia Commons. (June 3, 2015). ''Carroagas'' [Online]. Available: http://fr.wikipedia.org/wiki/Gaz_naturel_pour_v%C3%A9hicules#/media/File:Carroagas.jpg</ref>]]
<onlyinclude>'''Compressed natural gas''' or '''CNG''' is simply [[natural gas]] - with the main component being [[methane]] - that is stored under high [[pressure]]s (while remaining in its [[gas|gaseous]] form) mainly as a means to transport it or as storage for later use as a vehicle fuel.</onlyinclude> In this form, it remains clear, odourless, and non-corrosive.<ref name="RE1">Consumer Energy Center. (June 3, 2015). ''Compressed Natural Gas'' [Online]. Available: http://www.consumerenergycenter.org/transportation/afvs/cng.html</ref> CNG is used widely as an alternative fuel for vehicles as it has a fairly high [[octane rating]]. CNG is not to be confused with [[liquefied natural gas]], which has been turned into a [[liquid]] (and LNG must also be at very low [[temperature]]s). Although still in its gaseous form, compressed natural gas is under more pressure and thus takes up a smaller [[volume]] than ordinary natural gas (but more volume than LNG).

==Storage and Transport==
After being extracted from wells and treated, the gas travels through pipelines to a distributor. These distributors then send this fuel out to customers in pressurized tanks or sent out to fueling stations.<ref name="RE1"/> At smaller fueling stations and in vehicles, the compressed gas is stored in thick-walled tanks made of aluminum, steel, or some composite.<ref name="RE1"/> These high pressure tanks are kept at pressures around 20-25 [[pascal|MPa]], 200-250 [[bar]], or 3000-3600 [[psi]].<ref name="RE2">Alternative Fuel Systems. (June 3, 2015). ''What’s the difference between CNG, LNG, LPG and Hydrogen?'' [Online]. Available: http://www.afsglobal.com/faq/gas-comparisons.html</ref> This high pressure reduces the volume of the natural gas to less than 1% of its volume at [[standard atmosphere|standard atmospheric pressure]].<ref name="RE3"/>

==Use as an Alternative Fuel==
CNG can be used as a [[gasoline]] alternative in a number of different vehicles and many commercial vehicles have recently become CNG fueled. Vehicles of any sizes from sedans to heavy-duty transit vehicles like buses and street sweepers can be fueled by CNG.<ref name="RE1"/> Currently, natural gas powers more than 12 million vehicles on the road with about 250,000 of these located in the United States.<ref name="RE3">CNG Now. (June 4, 2015). ''What is CNG?'' [Online]. Available: http://www.cngnow.com/what-is-cng/Pages/default.aspx</ref>

There are several benefits to using natural gas as an alternative fuel for transportation. In the US, the fact that more than 99% of the natural gas used comes from domestic or North American sources is a major benefit because of the heavy reliance of the economy on foreign oil.<ref name="RE1"/> Additionally, it burns more cleanly than gasoline or [[diesel]] fuel - showing an average reduction in [[emission]]s of 80% as compared to gasoline vehicles.<ref name="RE1"/> Additionally, current estimates say that compressed natural gas costs about 40% less than gasoline.<ref name="RE1"/>

==Safety==
Natural gas is [[flammable]], however a leak is not always extraordinarily dangerous. Because natural gas is lighter than [[air]], it quickly dissipates when it leaks out of a tank and it is only flammable when the air/natural gas mixture is 5-15% natural gas.<ref name="RE1"/> Additionally, a sulfur-based [[mercaptan]] - an [[odourant]] - is added to make leaks more simple to detect.<ref name="RE2"/> This narrow flammability range makes it a safe fuel to use, but strict safety standards exist to make CNG powered vehicles as safe as those powered by gasoline.<ref name="RE3"/> There are some safety concerns with large buses fueled by CNG compared to [[diesel]] buses. One of these is a longer breaking distance due to the added weight of the fuel storage system. Finally, the composition of natural gas itself can be an issue. CNG is mainly [[methane]] - a [[greenhouse gas]] - which could contribute to [[climate change]] if a leak existed.

==References==
{{reflist}}
[[Category:Uploaded]]