Gas Flow Calculator - Xchanger

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AirArgonBio GasCarbon DioxideMethaneNitrogenOxygenWaterOther, MW entered here –>  MW
Standard / Normal  SCFM
 NM3/hr
Mass  lb/hr
 kg/hr
Volume (English)  CFM
 ft ASL  PSIA
°F  PSIG
Volume (Metric)  M3/hr
 m ASL  BarA
°C  BarG

In systems with vacuum pumps, blowers, compressors, and heat exchangers, air pressure and temperature are constantly changing, which means the actual volume flow is changing.  This makes the specification of volume flow particularly prone to error and misinterpretation.  Unless there is a leak, the mass / standard volume flow stays the same, so it is more concise to discuss these systems in terms of mass or standard volume flow.  Specify mass or standard volume …be understood!

Standard = 70°F & 14.696 PSIA, Normal = 0°C & 1.013 BarA;  these standard conditions are one choice among many standards.  For more information see Wikipedia’s page on standard conditions for temperature and pressure.

For more information on the relationship of temperature, pressure, volume, mass, and molar weight, see Wikipedia’s page on the ideal gas law.

Contact Info

[email protected] (952) 933-2559 1401 7th Street South Hopkins, MN 55343-7868

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