An Improved Algorithm For Calculating the Compressibility Factor of Natural Gases

摘要：

It would take much time to compute the compressibility factor of natural gas with AGA8-92DC method due to the iteration algorithm. To reduce the number of iterations, several curves of relationship between the gas molar density pm and temperature T under different values of pressure P are fit by the Least-Square method. And then, the value of the molar density pm under the current pressure P is obtained by the linear interpolation method, which is applied to the iterative calculation. Thus, the number of iterations is decreased and the real-time performance of the algorithm is improved. The modified algorithm is tested by some real-world data sets, and the results show that the improved algorithm is of high accuracy and good reliability, which can meet the requirements of industrial processes.

关键词： compressibility factor virial equation dynamic link uncertain degree

作者: Jinjie Huang Ningning Huang ChunIi Yang

作者单位: School of Automation Harbin University of Science and Technology Harbin,China

会议类型: 国际会议

会议名称: The 6th International Forum on Strategic Technology(IFOST 2011)(第六届国际战略技术论坛)

会议地点: 哈尔滨

会议语种:英文

页码: 876-880

在线出版日期: 2011-08-22（万方平台首次上网日期，不代表论文的发表时间）