ABSTRACT

This chapter discusses the composition of a gas from some suitable measurement. It is possible to calculate pertinent properties such as: heating value, relative density, compressibility factor. The primary function of compressibility factor is to indicate the deviation of real gas behavior from that of the ideal gas. For hand calculations, a simplification provides very reasonable values. The basic assumption is that the interaction virial coefficient is the geometric mean of the pure virial coefficients. Use of molar flowrate, mass flowrate or ideal gas flowrate is actually simpler than using real gas flowrate to calculate. An objection might be that flowmeters, notably orifices, produce.