e, in °K (degrees Kelvin)РR = (universal gas constant, in J/kgmol•°K)/MW = 8314/MWРMW = molecular weight of gas (dimensionless)РP1 = absolute inlet pressure, in kPa (kiloPascals)РP2 = absolute discharge pressure. in kPaРThe theoretical power (P) required is:РP = (F H)/1000 = [k/(k-1)] [w R T1/9806][(P2/P1)(k-1)/k - 1] Рwhere:РP = theoretical power, in kW (kilowatts) which is same as (Nm/s)/1000РF = (mass flow of gas, in kg/s)(9.806 m/s2), in kg•m/s3 which is same as N/sРN = NewtonsРm = metersРs = secondsРTo obtain the actual power, simply divide the theoretical power by pressor efficiency which you will have to obtain from the manufacturer.РPlease excuse my spelling the metric units ... this is done for those readers who (like myself) are struggling to get away from the USA customary units
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