ISO 20765-1-2005 天然气.热力学性质计算.第1部分:传输和分配设施的气相特性

标准号：ISO 20765-1-2005
中文标准名称：天然气.热力学性质计算.第1部分:传输和分配设施的气相特性
英文标准名称：Natural gas - Calculation of thermodynamic properties - Part 1: Gas phase properties for transmission and distribution applications
标准类型：E24
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：E24
国际标准分类号：75.060
适用范围：This part of ISO 20765 specifies a method of calculation for the volumetric and caloric properties of natural gases, natural gases containing synthetic admixture and similar mixtures, at conditions where the mixture can exist only as a gas. The 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. For volumetric properties (compression factor and density), the uncertainty of calculation is about ±0,1 % (95% confidence interval). For caloric properties (for example enthalpy, heat capacity, Joule-Thomson coefficient, speed of sound), the uncertainty of calculation is usually greater.