Why cng is compressed

Fossil Fuels. Nuclear Fuels. Acid Rain. Climate Change. Climate Feedback. Ocean Acidification. Rising Sea Level.

Compressed natural gas Figure 1. Compressed natural gas in a vehicle. A label at the CNG pump notifies the consumer of the gas grade being supplied. DIN EN specifies characteristics, test methods and threshold values for calorific value , density, methane number and concentration, oxygen, hydrogen, and sulfur content, and compressor oil and suspended matter content, among many other things.

In its energy policy, the German federal government resolved to promote vehicles that run on CNG because of their clean combustion. The main difference between these gases is that LPG is stored as a liquid, fuelled at bar, and is heavier than air. CNG is compressed to bar and is gaseous and lighter than air. That means that in case of an accident or leak, LPG remains as a puddle on the floor and represents a danger, while CNG rises and evaporates. CNG vehicles utilize compressed natural gas as fuel in a comparable way to petroleum derivative vehicles.

These vehicles contain spark-ignited combustion engines, which work similarly to non-CNG vehicles. In comparison to petroleum derivatives , compressed natural gas is a more abundant and consistent fuel source. Because CNG is sourced underground in the United States, it has steadier prices, as factors like weather and importation are irrelevant. CNG is also safer than vehicles that use petroleum derivatives like propane because of its lower flash point, or when it ignites.

Vehicles that utilize this alternate fuel also have less emission pollution than their counterparts. Safer and cleaner to use than petroleum derivatives, compressed natural gas releases less toxic exhaust and CNG vehicles are often quieter than other trucks.