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随着国家标准GB/T22723-2008《天然气能量的测定》的正式实施,我国的天然气的计量方式将由体积计量向能量计量转变。主要介绍国内外天然气的能量计量现状,指出我国与发达国家存在的差距;介绍天然气能量计量的基本原理、天然气能力计量系统的溯源及其不确定度,并分析比较天然气热值的测定方法,最后就我国从体积计量逐步转变为能量计量的过程中所需要开展的一系列工作进行阐述,指出能量计量相对于体积计量更能充分的体现出天然气作为燃料的真正使用价值,并在一定程度上能消除体积计量时因计量参比条件不同而引起的价格争议,促进我国天然气产业链的发展。
With the formal implementation of the national standard GB / T22723-2008 Determination of Natural Gas Energy, the measurement of natural gas in China will change from volumetric measurement to energy measurement. This paper introduces the current situation of energy measurement of natural gas at home and abroad, points out the gap between China and developed countries, introduces the basic principle of natural gas energy measurement, traceability of natural gas capability measurement system and its uncertainty, and analyzes and compares the determination method of natural gas calorific value. Finally This paper elaborates a series of tasks needed in the process of gradual conversion from volumetric measurement to energy measurement in our country and points out that energy measurement can more fully reflect the real value of natural gas as a fuel and can to some extent Eliminate the price controversy caused by different measurement reference conditions in volume measurement, and promote the development of China’s natural gas industrial chain.