SCFM To ACFMSCFM - Standard Cubic Feet per Minute

*Europeans normally use one ata and 0 ªC as SCFM

ACFM - Actual Cubic Feet per Minute

The conversion from SCFM to ACFM can be expressed as:

Input:Pact (psia)= 12.23Tact (R)= 540Psat (psia)= 0.5069Relative humidity= 80%SCFD= 100

ACFM= 129.099839

A Tact = 113 FPact (psia)= 14.5Tact (R)= 572.6Psat (psia)= 1.39Relative humidity= 80%SCFD= 5574000

ACFM= ###

ICFM - Inlet Cubic Feet per MinuteIs used by compressor vendors to establish conditions in front of additional equipment like inlet filter, blower or booster.

Fuente: http://www.engineeringtoolbox.com/scfm-acfm-icfm-d_1012.html

The SCFM - Standard Cubic Feet per Minute - determines the weight of air to fixed or "Standard" conditions. There are several definitions of SCFM. The most common used in the United States is with "sea-level" properties:14.696 Pounds per Square Inch (psia)60 Degrees Fahrenheit (oF) (520 ªR)0% Relative Humidity (RH)

Unfortunately, real life "actual conditions" are seldom "standard conditions". When:- pressure is applied a volume of air - it gets smaller- vacuum is applied to a volume of air - it expand

For the purpose of performance calculations, compressor capacity is expressed as the actual volumetric quantity of gas at the inlet to each stage of compression on a per minute basis (ICFM).

w = weight flow (lb/min)

Input:P op (psia)= 12.23T op (R)= 540Z = 0.65SCFD= 5.57E+06

Q (CFD)= 4522323.39

SCFM To ACFM

The conversion from SCFM to ACFM can be expressed as:

Where:ACFM = Actual Cubic Feet per MinuteSCFM = Standard Cubic Feet per MinutePstd = Standard absolute air pressure (psia) 14.7Pact = absolute pressure at the actual level (psia)Psat = Saturation pressure at the actual temperature (psi)Φ = Actual relative humidityTact = Actual ambient air temperature (oR)Tstd = Standard temperature (oR) 520

Is used by compressor vendors to establish conditions in front of additional equipment like inlet filter, blower or booster.

Where:ICFM = Inlet Cubic Feet per Minute

The SCFM - Standard Cubic Feet per Minute - determines the weight of air to fixed or "Standard" conditions. There are several definitions of

To Psat: http://www.srh.noaa.gov/epz/?n=wxcalc_vaporpressure

Pf = Pressure after filter or inlet equipment (psia)

Tf = Temperature after filter or inlet equipment (oR)

For the purpose of performance calculations, compressor capacity is expressed as the actual volumetric quantity of gas at the inlet to each stage of

w = weight flow (lb/min)