The mm (usually capitalized as in "MM") stand for million. cfm stands for cubic feet per minute. So MMcfm stands for million cubic feet per minute.
As a side note you may also see MMscfm which stands for "million standard cubic feet per minute," which uses the gas density at the reference temperature of exactly 60 degrees Fahrenheit. This may be different than the actual density, but it provides a way to distinguish exactly how much gas is flowing independent of temperature.
One pound of natural gas contains approximately 21,500-23,000 BTUs (British Thermal Units). The exact value can vary based on the composition of the natural gas.
Natural gas is typically measured in units such as cubic feet (cf), cubic meters (m³), or British thermal units (BTUs), not in water column measurements. However, pressure measurements of natural gas in pipelines may be expressed in inches of water column (in WC) or pounds per square inch (psi) to indicate the pressure within the system. These pressure measurements are important for ensuring safe and efficient transport and distribution of natural gas.
A therm of natural gas is a unit of measurement used in the energy industry to quantify the heat energy content of natural gas. One therm is equivalent to 100,000 British thermal units (BTU), which is a common way to measure the heat output of fuels. It is often used to bill consumers for their natural gas usage.
I will rephrase your question as to what are the accepted units for volumes of natural gas measurements. The natural standard for measuring volume is liters, but this is too small a quantity for gas measurements. Natural gas volumes are usually measured either in metric units (cubic meters) or in field/ British units (cubic feet or cf). It is also proper to refer to gas volumes as fte or m3. In the oil industry, it is proper to state volumes as "standard cubic ft" or SCF which is gas measured at a stated pressure (usually atmospheric pressure) and temperature (60 degrees F is used). For 1,00 standard cubic feet, we would use MSCF, where M = one thousand. A billion cubic ft would be MMSCF or BSCF. Sometimes this is written as Mcf or Bcf. Now, in the SI units (see link), the proper notation for 1,000 cubic meters is Km3 and the proper notation for 1,000,000 cubic meters is Mm3.
At standard temperature and pressure (STP), 1 liter of natural gas contains approximately 37.3 British thermal units (BTUs). This value can vary slightly depending on the specific composition of the natural gas, but it serves as a general estimate for the energy content.
compressed natural gas
Compressed Natural Gas
The letters ETF stand for Exchange Traded Fund. It pertains to natural gas in that it is an investment vehicle relating to natural gas. It is highly speculative.
In Canada its measured in litres but some places are different.
Compressed Natural Gas
It could stand for Reducing and Metering Station.
One pound of natural gas contains approximately 21,500-23,000 BTUs (British Thermal Units). The exact value can vary based on the composition of the natural gas.
The typical heat content of 1 cubic foot of natural gas is around 1,030-1,100 BTUs (British Thermal Units). This can vary slightly based on the composition of the natural gas.
The heat content of natural gas can vary depending on its composition, but on average, 1 cubic foot of natural gas contains about 1,050 BTUs (British Thermal Units) of heat energy.
A therm of natural gas is a unit of measurement used in the energy industry to quantify the heat energy content of natural gas. One therm is equivalent to 100,000 British thermal units (BTU), which is a common way to measure the heat output of fuels. It is often used to bill consumers for their natural gas usage.
One cubic meter of compressed natural gas (CNG) typically contains between 9000 to 11000 BTUs (British Thermal Units) of energy.
I will rephrase your question as to what are the accepted units for volumes of natural gas measurements. The natural standard for measuring volume is liters, but this is too small a quantity for gas measurements. Natural gas volumes are usually measured either in metric units (cubic meters) or in field/ British units (cubic feet or cf). It is also proper to refer to gas volumes as fte or m3. In the oil industry, it is proper to state volumes as "standard cubic ft" or SCF which is gas measured at a stated pressure (usually atmospheric pressure) and temperature (60 degrees F is used). For 1,00 standard cubic feet, we would use MSCF, where M = one thousand. A billion cubic ft would be MMSCF or BSCF. Sometimes this is written as Mcf or Bcf. Now, in the SI units (see link), the proper notation for 1,000 cubic meters is Km3 and the proper notation for 1,000,000 cubic meters is Mm3.