天然气绝热节流温度降的计算  

Calculation for Temperature Drop Induced by Adiabatic Throttle of Natural Gas

作　　者：彭世尼[1] 陈建伦[1] 杨建 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045 [2]南充市第一中学,四川南充637000

出　　处：《煤气与热力》2006年第1期1-4,共4页Gas & Heat

基　　金：国家十五攻关课题"小城镇燃气供给系统建设关键技术研究"(2003BA808A15-3);教育部"三峡库区生态环境工程"重点实验室项目

摘　　要：计算压缩天然气绝热节流的温度降的关键是求解焦耳-汤姆逊系数。对采用VDW、RK方程直接求导法和理想气体状态方程的修正式求导法求得的焦耳-汤姆邀系数值与实测值、常规方法所得的值进行了对比。分析了计算误差产生的原因和计算方法的优劣,推荐在不同的气体状态下使用不同的计算方法。The key to calculate the temperature drop induced by adiabatic throttle of compressed natural gas is to find the solution of the Joule-Thomson coefficient. The values of Joule-Thomson coefficient derived from VDW and RK equations and the correction formula of state equation of ideal gas are compared with the measured values and the values obtained by conventional methods. The reason for calculation errors and the advantages and defects of these methods are analyzed. It is recommended that the different methods are used according to different gas states.

关 键 词：绝热节流 焦耳-汤姆逊系数 状态方程 压缩因子 

分 类 号：TU996[建筑科学—供热、供燃气、通风及空调工程]