GB/T 17747.2-2011 in English

《GB/T 17747.2-2011天然气压缩因子的计算 第2部分：用摩尔组成进行计算》由TC244（全国天然气标准化技术委员会）归口，主管部门为国家标准化管理委员会。

1 Scope

This Part of GB/T 17747 specifies methods for the calculation of compression factors of natural gases, natural gases containing a synthetic admixture and similar mixtures at conditions under which the mixture can exist only as a gas.
This Part of GB/T 17747 specifies a method for the calculation of compression factors when the detailed composition of the gas by mole fractions is known, together with the relevant pressures and temperatures.
The method (also named as AGA8-92DC Method) is applicable to pipeline quality gases within the ranges of pressure p and temperature T at which transmission and distribution operations normally take place, with an uncertainty of about 0.1 %. It can be applied, with greater uncertainty, to wider ranges of gas composition, pressure and temperature (see Appendix E).
More detail concerning the scope and field of application of the method is given in GB/T 17747.1.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Method of Calculation
Appendix A (Normative) Symbols and Units
Appendix B (Normative) Description of the AGA8-92DC Method
Appendix C (Normative) Example Calculations
Appendix D (Normative) Pressure and Temperature Conversion Factors
Appendix E (Informative) Performance over Wider Ranges of Application