我国商品天然气采用热值计量的必要性与可能性

NECESSITY AND POSSIBILITY OF ADOPTING CALORICITY TO GAGE COMMERCIAL GAS IN CHINA

用作燃料的天然气的主要商品价值是其所具有的热量，采用反映其所含热量的热值计量可消除采用体积计量因计量条件不同而引起的价格争议。测定天然气热值的间接计算法和直接测定法都可实现对天然气热值的在线测定。介绍了北京南郊门站使用的美国贝克公司天然气流量计算机系统，和带微处理机的在线全组分气相色谱仪，该气相色谱仪可在线对天然气进行全组分分析，并通过与流量计算机接口完成对天然气的热值流量计量。

As a fuel,the main commercial value of natural gas is its inclusive caloricity.The gas price dispute caused by gaging volume can be eliminated by gaging caloricity.The on line determination of natural gas caloricity can be accomplished by caloricity indirect calculating and direct determining.The gas flow computer system,made in Beker Co.U.S.A,used at the gate station in south suburb of Beijing,and its on line full components gas chromatograph spectrometer with microcomputer processor which can on line analyse the gas full components and gage the caloricity flow by linking up the flow computer is introduced.