A Formula-SGERG-88 for Calculating Natural Gas Compressed Equation

SGERG-88 equation was developed by an European gas research group used to calculate the compressed factor of natural gas under operation. It has recently been recommended as a standard method by, the International Standard Organization to calculate the compressed factor of natural gas in operation.The mathematical evaluation of equation of SGERG-88 equation is described with the exact procedures of solving equations, also on micro computers, the range it can be used and the uncertainty.