Advanced Search

Question: Adding Normal Cubic Meters (or Standard Cubic Feet) to a Unit System

Question:Adding Normal Cubic Meters (or Standard Cubic Feet) to a Unit System

ddenholm 10 Maple
October 02 2010
2

In the chemical and oil & gas industries it is quite common to describe a gas flow in units of standard volume (e.g. normal cubic meters aka NM3 or standard cubic feed aka SCF).

This is really equivalent to a molar flow rather than a volume flow since the volumes are calculated based on the ideal gas law assuming the flow is at standard conditions (1 atm and 0C for NM3 and 1 atm and 60F for SCF).

I would like to add NM3 and SCF to the SI and FPS unit systems.

NM3 is equivalent to 22.413 x 1000 x mole

If someone can explain how to add NM3 to the SI system I would appreciate it. (I would like to use Natural Units in Document mode if that makes any difference.)

TIA

--Doug
Please Wait...