The committee suggested problem of excessive billing due to gross calorific value (GCF) and super compressibility factor
(SCF) to industries in KPK be solved on a prioritized basis, reported Business Recorder.
Thus, the compressibility factor
Z is introduced to modify the gas state equation :
Racket compressibility factor
(ZRA), can be calculated as:
1 can be rewritten as a cubic polynomial of the compressibility factor
, defined as Z = PV/(RT).
The processor is able to calculate fluid properties such as temperature, pressure, specific molar enthalpy and entropy, energy flow, molecular weight, and compressibility factor
For the compressibility factor
, Z = [p/([rho]RT)], this becomes
But the most common one that has been used by several authors is to introduce the general form of the compressibility factor
Z in the following form (Kretschmer and Wiebe, 1954; Anderko, 1989a, 1989b, 1990, 1991, 1992; Anderko and Prausnitz, 1994; Shinta and Firoozabadi, 1995; Cho et al.
A numerical friendly form of Redlich-Kwong cubic equation  of state in compressibility factor
, Z, is used to model nonideal gas behavior.
Design parameters describe a compressibility factor
of 10 to 40%, tensile strength of 1500 to 4000 psi, and compressive strength of 10,000 to 60,000 psi.
Therefore, the effects of inlet temperature, gas molecular weight and compressibility factor
are not required to be considered in the controlling system.
The correlation of the compressibility factor
as a function of temperature and pressure was the basis to obtain an equation for dry air specific volume.