CNG For Fueling

Ariel CNG compressors can be configured to match the natural gas line pressure in your area and used to fill heavy duty fleets, busses, or light duty vehicles. Two Ariel reciprocating compressors can be combined to deliver more than 100,000 gallons equivalent of CNG per month.

How it works:

What is CNG?

CNG is a fuel made by compressing natural gas or biogas to less than 1% of its volume. Once compressed, CNG is stored and distributed at a significantly lower cost than gasoline or diesel.

Transportation & Filtering

Pipelines transport natural gas to compressor stations where it passes through a gas dryer. These dryers contain scrubbers and filters that capture liquids and other unwanted particles. Once dry, the gas travels to an Ariel CNG compressor.

Compression

Here, the gas is compressed through two to five stages of compression until it reaches a pressure of 4,500 psig.

Storage

A priority panel directs the compressed natural gas flow from the compressor to the on-site, above-ground storage vessels.

Fuel Distribution

When needed, the CNG flows from the storage vessel to the dispenser, where customers fill their natural gas vehicles – much like a conventional fueling station.

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Case Studies

Kentuckiana

Case Study

Learn how the Louisville, Kentucky-based CNG solutions company is expanding with the help of Ariel CNG compressors.

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Rumpke Colerain Township Landfill

Case Study

Learn how one midwest company is taking its trash and turning it into fuel – all thanks to an Ariel compressor.

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Renewable Natural Gas (RNG) known also as Biogas, BioCNG, or BioMethane comes from organic waste and is chemically identical to conventional pipeline gas. RNG is the only alternative fuel that, when produced according to best practices, is a carbon-negative fuel. RNG has the lowest life-cycle analysis carbon footprint of any alternative fuel available today, even surpassing electric vehicles (EV) charged by renewable electricity. Ariel can help you take full advantage of RNG’s benefits.

A single catalytic converter is all that is needed on a CNG truck emission system, similar to a passenger car’s system, only larger. Vehicles running on CNG are cleaner burning than their conventionally fueled counterparts and reduce CO2 equivalent emissions, especially by lowering smog causing NOx by up to 90%. Because CNG is cleaner than diesel or gasoline, engine wear is reduced, prolonging vehicle lifespan. Natural gas vehicles (NGV) burning RNG can a net negative impact on the environment allowing fleets to reduce their carbon footprint dramatically

CNG Compressors

Ariel's CNG compressors for vehicle fueling are derived from the same advanced design and industry experience as the products we manufacture for field gas, process, and transmission applications. CNG application engineering, sizing software, and CNG specific training are included at no additional charge.

Ariel compressors, one of the most robust, continuous, or intermittent duty compressors for the CNG market!

CNG Compressor Features

Utilized in NGV fueling services providing 125 to 2,000+ scfm (200 to 2,800+ nm/h), Ariel compressors are paired with drivers ranging in size from 50 to more than 1,200 BHP (37 to 895 Kw). Our extensive range of cylinder sizes allows units to operate with inlet pressures starting near zero to more than 200 psig (13.6 barg) and discharge pressures over 4,500 psig (310+ barg).

Flexible, site-specific compressor configurations
Horizontal balanced opposed throws
Precision tri-metal half shell bearings for crankshaft main and crankpin bearings
Intermittent duty (frequent start/stop) capability and maintenance recommendations
Virtually vibration-free operations
Electric motor or gas engine drive compatible
Uncompromising rigid, robust crankcases allow for reduced physical footprint

Ariel Frame Operating Ranges

4,300+

Compressors packaged for CNG fueling service

Commonly used for fleet vehicle operations

90%

Potential NOx emissions reduction

31 compressor models suited for process service

CNG Cylinder Design Features

Hardened Ductile Iron cylinder bodies up to 3,000 psig
Hardened Forged Steel cylinder bodies to 4,500+ psig
Partnered Tandem Cylinder configurations
CNG specific designs- including 10 ¾” HE cylinder, 3 5/8" SG CE, 3" SG CE, 1 ¾" SG HE
Efficient Valving, including large concentric valves for increased flow
Uncooled, Oil-cooled, glycol-cooled packing available