Trillium CNG Resources

Trillium CNG at Love's Travel Stops

How A CNG Station Works



  • 1. Gas Meter
    Your local gas utility will supply a meter for the CNG station to measure the amount of gas you use. It is important to work closely with the utility to determine the pressures and flow rates that are available at your site, and if any service upgrades will be needed.
  • 2. Gas Dryer
    In the dryer, gas flows through filters and a desiccant bed to remove moisture and contaminants. Only clean, dry gas flows to the compressors.
  • 3. CNG Compressors
    The compressors are the workhorses of every CNG station and they must withstand the rigors of heavy-duty daily use over many years. To meet this demand, Trillium installs reliable Ariel compressors, as they have an unmatched record of service, long life, and superior factory support. Compressors are housed in sound-attenuated enclosures that minimize noise.
  • 4. High Pressure Storage
    From the compressors, Trillium's advanced control system will manage the flow of gas and determine whether to send it to storage or to bypass storage sending the gas directly to the dispensers.
  • 5. CNG Fuel Dispenser
    Fuel can be dispensed through a Fast-Fill or Time-Fill system. Fast fill systems provide fill times that are similar to gasoline and diesel fuel dispensing, and often include fuel management and credit card payment systems. Time-fill systems refuel vehicles overnight while they are not in service.

CNG Calculator

Required Modifications For Adding CNG Vehicles

Read More on Required Modifications for Adding CNG Vehicles to Existing Maintenance Facilities.

Visit Natural Gas Vehicles for America (NGVAmerica) for more Technical and Safety Documents.

adding cng stations

Trillium CNG Press Releases

Videos

Glossary of Terms

Trying to make sense of CNG terminology? Here's a glossary to help you understand some of the technical language.

Btu (British Thermal Unit): Btu corresponds to the amount of energy required to raise the temperature of one pound mass of water by 1° F

DGE (Diesel Gallon Equivalent): DGE corresponds to the amount of CNG containing the same energy content as one gallon of diesel. Ultra-low sulfur diesel has slightly less energy than traditional diesel, so 1.35 therms per DGE is commonly cited conversion rate.

GGE (Gasoline Gallon Equivalent): GGE corresponds to the amount of CNG containing the same energy content as one gallon of gasoline. The typical conversion rate is 1.25 therms per GGE.

Inlet or Suction Pressure: Both inlet and suction pressure refer to the incoming pipeline gas pressure that supplies the CNG station. Inlet pressure is one of the main factors that determines the overall flow rate of a CNG station.

LNG (Liquefied Natural Gas): LNG is natural gas that has been cooled to -259 degrees Fahrenheit (-161 degrees Celsius) and then condensed into a colorless, odorless, non-corrosive and non-toxic liquid. LNG is characterized as a cryogenic liquid.

Methane: Methane (CH4), commonly known as natural gas, is an abundant, colorless gas that burns efficiently without many byproducts. As methane is naturally odorless, it has a distinctive odor added as a safety measure.

MMBtu: One Million Btu.

PSI (Pounds per Square Inch): PSI refers to pressure measured with respect to atmosphere pressure. Pressure gauges are adjusted to read zero at the surrounding atmospheric pressure.

SCF (Standard Cubic Foot): Contains approximately 1,000 BTU.

SCFM (Standard Cubic Feet per Minute): SCFM is the standard measurement for the flow rate of gas. A CNG station with a flow rate of 125 SCFM equates to 1 GGE per minute.

Therm: 100,000 British thermal units (BTU). A common measure of gas as sold by utilities.

Benefits of Natural Gas Vehicles