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Procedure calculates base gas compressibility factors

03/26/2007
This article presents an easy and simple spreadsheet procedure for custody-transfer calculations of the base compressibility factor for any pair of pressure and temperature conditions.The procedure uses the second virial coefficient data source from Reference 1. The calculated compressibility factors are similar with values obtained from the AGA 8 compressibility equation of state.2MeteringIn gas industry metering applications, the base (or standard) conditions for pressure and temperature vary, not only with the geographical region but among gas sales contracts.In the US, the common base or standard reference conditions are 60º F. and 14.73 psia. In Europe, the normal reference cond...
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