利用前人所提出的对应态基团贡献法(Corresponding State Group Contribution,简称CSGC),回归了包括烷烃、烯烃、炔烃、酮、酯、萘、环氧化合物、含磷化合物、含硫、含氮、含硅等20类291种纯物质(共2,042个数据点)在不同温度下的液体黏...利用前人所提出的对应态基团贡献法(Corresponding State Group Contribution,简称CSGC),回归了包括烷烃、烯烃、炔烃、酮、酯、萘、环氧化合物、含磷化合物、含硫、含氮、含硅等20类291种纯物质(共2,042个数据点)在不同温度下的液体黏度值,得到94个基团对临界温度和临界压力的贡献值以及方程的11个模型参数,总平均相对误差为6.13%.并且用10种未参与回归的物质(共79个数据点)对方程进行了验证,平均误差为67.9%.展开更多
Based on the Corresponding State Theory (CST) and other methods for predicting transport properties,a new corresponding state method is developed to estimate the viscosity from thermal conductivity and to estimate the...Based on the Corresponding State Theory (CST) and other methods for predicting transport properties,a new corresponding state method is developed to estimate the viscosity from thermal conductivity and to estimate thermal conductivity from the viscosity of freon at the saturated liquid state. The HFC134a is taken as the reference fluid in the method. The average deviation of thermal conductivity estimated from viscosity is less than 7%,while that of viscosity estimated from thermal conductivity is less than 8%,which can meet the demands of engineering applications.展开更多
A new estimation method was proposed by combining the corresponding state principle with the group contribution method through introducing the concept of assumed-critical properties. Combining it with the Reidel equat...A new estimation method was proposed by combining the corresponding state principle with the group contribution method through introducing the concept of assumed-critical properties. Combining it with the Reidel equation, a new acentric factor correlation equation (CSGC-Reidel) was developed. Contribution values of 70 groups were obtained by correlating acentric factor data of 228 organic compounds of 14 type substances including saturated hydrocarbons, unsaturated hydrocarbons, cyclanes, aromatics, oxygen compounds, nitrogen compounds,halohydrocarbons, etc. The average error of acentric factor is 3.52% between the literature data and the predicated with the new estimation method.展开更多
文摘利用前人所提出的对应态基团贡献法(Corresponding State Group Contribution,简称CSGC),回归了包括烷烃、烯烃、炔烃、酮、酯、萘、环氧化合物、含磷化合物、含硫、含氮、含硅等20类291种纯物质(共2,042个数据点)在不同温度下的液体黏度值,得到94个基团对临界温度和临界压力的贡献值以及方程的11个模型参数,总平均相对误差为6.13%.并且用10种未参与回归的物质(共79个数据点)对方程进行了验证,平均误差为67.9%.
文摘Based on the Corresponding State Theory (CST) and other methods for predicting transport properties,a new corresponding state method is developed to estimate the viscosity from thermal conductivity and to estimate thermal conductivity from the viscosity of freon at the saturated liquid state. The HFC134a is taken as the reference fluid in the method. The average deviation of thermal conductivity estimated from viscosity is less than 7%,while that of viscosity estimated from thermal conductivity is less than 8%,which can meet the demands of engineering applications.
文摘A new estimation method was proposed by combining the corresponding state principle with the group contribution method through introducing the concept of assumed-critical properties. Combining it with the Reidel equation, a new acentric factor correlation equation (CSGC-Reidel) was developed. Contribution values of 70 groups were obtained by correlating acentric factor data of 228 organic compounds of 14 type substances including saturated hydrocarbons, unsaturated hydrocarbons, cyclanes, aromatics, oxygen compounds, nitrogen compounds,halohydrocarbons, etc. The average error of acentric factor is 3.52% between the literature data and the predicated with the new estimation method.
