当前我国推广实施天然气能量计量的技术障碍主要在发热量测定方面。虽然近年来我国已经发布了一系列有关天然气发热量直接和间接测定方法的国家标准,然而在这些标准涉及的有关术语和定义的规范、溯源链结构的架构、标准方法的确认、标准气混合物(RGM)的研制以及测定结果不确定度的评定等方面,与国外先进水平相比尚有较大差距。故目前在我国全面推广实施能量计量的条件还不太成熟。但为了应对当前国际环境下可能出现的国际贸易纠纷,建议:尽快落实进口RGM的溯源报告;与韩国标准化研究院的0级热量计进行比对;争取在尽可能短的时间内完成准确度优于0.35%的0级热量计的研制。

Calorific value measurement is the main obstacle of implementing natural gas energy determination technology in China. China has published a series of national standards on the direct and indirection determination of natural gas calorific value, but compared with best international practices, there are still some gaps on standardization of terminology and definition, structure of traceability chain, confirmation of the standard methods, development of RGM (Reference Gas Mixture), and the estimation of measuring uncertainty, etc. Therefore, the conditions are not ready for China to fully implement energy determination. To deal with possible International trade disputes in current international environment, it is suggested to implement the traceability report based on imported RGM, compare the results with the level-0 calorimeter of Korean Research Institute of Standards and Science, and complete the development of level-0 calorimeter with better than 0.35% accuracy as soon as possible.