在对二甲醚实验数据进行文献调研的基础上,运用生物进化优化算法开发了二甲醚的饱和蒸汽压、饱和液密度及饱和汽密度方程和 Helmholtz 状态方程.其中二甲醚的饱和蒸汽压、饱和液密度和饱和汽密度方程的平均绝对偏差分别为 0.50%、0.38%和 0.55%.新的 Helmholtz 状态方程计算密度的偏差在液相区为 0.1%以内,临界点附近为 l%,可以很好地用于工程计算.
In this work, the vapor pressure equation, saturated liquid density equation, saturated vapor density equation and Helmholtz equation of state for dimethyl ether are developed by genetic optimization algorithm combined with a weighted least-square fit of selected experimental data based on extensive collection of DME's experimental data. The average absolute deviation of vapor pressure equation, saturated liquid density equation and saturated vapor density equation is 0.50%, 0.38% and 0.55%, respectively. The uncertainty in density of the equation of state ranges from 0.1% in the liquid to 1% near the critical point.
参考文献
| [1] | 吴江涛.高精度流体热物性测试实验系统的研制及二甲醚热物理性质的研究[M].西安:西安交通大学,2005 |
| [2] | Kudchadker A P;Ambrose D;Tsonopoulos C .VaporLiquid Critical Properties of Elements and Compounds.7 Oxygen Compounds Other Than Alkanols and Cycloalkanols[J].Journal of Chemical and Engineering Data,2001,46(457):457479. |
| [3] | Masahiko Yasumoto;Yuko Uchida;Kenji Ochi;Takeshi Furuya;Katsuto Otake .Critical Properties of Three Dimethyl Ether Binary Systems:Dimethyl Ether(RE-170)+Propane(HC-290),Butane(HC-600),and 2-Methyl Propane(HC-600A)[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2005(2):596-602. |
| [4] | Ihmels EC;Lemmon EW .Experimental densities, vapor pressures, and critical point, and a fundamental equation of state for dimethyl ether[J].Fluid Phase Equilibria,2007(1):36-48. |
| [5] | Bobbo S;Camporese R;Stryjek R .Vapour + Liquid Equilibrium Measurements and Correlations of the Refrigerant Mixture {Dimethyl Ether (RE170) +1,1,1,3,3,3-Hexafluoropropane (R236fa)} at the Temperatures (303.68 and 323 75) K[J].Journal of Chemical Thermaodynamics,1998,30:1041-1046. |
| [6] | Bobbo Sergio. .Vapor-Liquid Equilibrium for Dimethyl Ether and 2-Methylpropane[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2000(5):829-832. |
| [7] | Bobbo S.;Camporese R.;Stryjek R.;Fedele L. .Isothermal vapor-liquid equilibrium for the three binary systems 1,1,1,2,3,3-hexafluoropropane with dimethyl ether or propane, and 1,1,1,3,3,3-hexafluoropropane with dimethyl ether[J].Fluid Phase Equilibria,2000(1/2):3-12. |
| [8] | Bobbo S.;Fedele L.;Camporese R.;Stryjek R. .Hydrogen-bonding of HFCs with dimethyl ether: evaluation by isothermal VLE measurements[J].Fluid Phase Equilibria,2002(1/2):153-160. |
| [9] | Bobbo S;Fedele L;Scattolini M et al.Isothermal Vapor + Liquid Equilibrium Measurements and Correlation for the Dimethyl Ether + 1,1,1,2,3,3,3-Heptafluoropropane and the Propane + 1,1,1,2,3,3,3-Heptafluoropropane Systems[J].Fluid Phase Equilibria,2004,224:119123. |
| [10] | Chang E;Calado J C G;Streett W B .Vapor-Liquid Equilibrium in the System Dimethyl Ether Methanol from 0 to 180.Degree C and at Pressures to 6 7 MPa[J].Journal of Chemical and Engineering Data,1982,27(03):293-298. |
| [11] | Hirofumi Daiguji;Eiji Hihara .Vapor-Liquid Equilibrium for Dimethyl Ether + Propyl Acetate[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2003(2):266-271. |
| [12] | Fedele L;Bobbo S;De Stefani V;Camporese R;Stryjek R .Isothermal VLE measurements for difluoromethane plus dimethyl ether and an evaluation of hydrogen bonding[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2005(1):128-132. |
| [13] | Florusse L J;Fornari T;Bottini S B et al.Phase Behavior of the Binary System Near-Critical Dimethyl Ether and Tripalmitin Measurements and Thermodynamic Modeling[J].Journal of Supercritical Fluids,2002,22:1-13. |
| [14] | Giles NF.;Wilson GM. .Phase equilibria on seven binary mixtures[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2000(2):146-153. |
| [15] | Jonasson A;Persson O;Fredenslund A .Phase Equilibria on Seven Binary Mixtures[J].Journal of Chemical and Engineering Data,1995,40(01):296-300. |
| [16] | Kennedy R M;Sagenkahn M;Aston J G .The Heat Capacity and Entropy,Heats of Fusion and Vaporization,and the Vapor Pressure of Dimethyl Ether.The Density of Gaseous Dimethyl Ether[J].Journal of the American Chemical Society,1941,63:2267-2272. |
| [17] | Noles J R;Zollweg J A .Vapor-:Liquid Equilibrium for Chlorodifluoromethane + Dimethyl Ether from 283 to 395K at Pressures to 5.0 MPa[J].Journal of Chemical and Engineering Data,1992,37(03):306-310. |
| [18] | Mariana Teodorescu;Peter Rasmussen .High-Pressure Vapor-Liquid Equilibria in the Systems Nitrogen + Dimethyl Ether, Methanol + Dimethyl Ether, Carbon Dioxide + Dimethyl Ether + Methanol, and Nitrogen + Dimethyl Ether + Methanol[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2001(3):640-646. |
| [19] | Tsang C Y;Streett W B .Vapor-Liquid Equilibrium in the System Carbon Dioxide Dimethyl Ether[J].Journal of Chemical and Engineering Data,1981,26(02):155-159. |
| [20] | Valtz A;Gicquel L;Coquelet C;Richon D .Vapour-liquid equilibrium data for the 1,1,1,2 tetrafluoroethane (R134a)+dimethyl ether (DME) system at temperatures from 293.18 to 358.15 K and pressures up to about 3 MPa[J].Fluid Phase Equilibria,2005(1/2):184-191. |
| [21] | Corvaro F;Di Nicola G;Polonara F;Santori G .Saturated pressure measurements of dimethyl ether at temperatures from (219 to 361) K[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2006(4):1469-1472. |
| [22] | Bobbo S;Scattolini M;Fedele L;Camporese R;De Stefani V .Compressed liquid densities and saturated liquid densities of dimethyl ether (RE170)[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2005(5):1667-1671. |
| [23] | Grosse A V;Wackher R C;Linn C B .Physical Properties of the Alkyl Fluorides and a Comparison of the Alkyl Fluorides with the Other Alkyl Halides and with the Alkyls of the Elements of Period II[J].Journal of Physical Chemistry,1939,44:275-296. |
| [24] | Span R.Multiparameter Equations of State-An Accurate Source of Thermodynamic Property Data[M].Beilin:Springer-Verlag,2000 |
| [25] | Stephanie L.Outcalt;Mark O.McLinden .Automated Densimeter for the Rapid Characterization of Industrial Fluids[J].Industrial & Engineering Chemistry Research,2007(24):8264-8269. |
| [26] | Kistiakowsky G B;Rice W W .Gaseous Heat Capacities I.The Method and the Heat Capacities of C2H6 and C2D6[J].Chemical Physics,1939,7(05):281-288. |
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