A new group-contribution equation of state(VDW-GC EOS)is developed by applying the group-contributionconcept to a local composition version of the modified van der Waals equation of state(VDW-DDLC EOS),which is establ...A new group-contribution equation of state(VDW-GC EOS)is developed by applying the group-contributionconcept to a local composition version of the modified van der Waals equation of state(VDW-DDLC EOS),which is established by combining the density dependent local composition mixing rule with the modified vander Waals equation of state.Group interaction parameter matrix for thirteen groups were determined frombinary VLE data.The new VDW-GC EOS has been extensively tested on the prediction of vapor-liquid,liquidliquid and gas-solid equilibria.In part Ⅰ the mathematical formulation of the VDW-GC EOS and the determination of the group interaction parameters are discussed.展开更多
The VDW-GC equation of state developed in PartⅠhas been extensively tested on the prediction of binaryand multicomponent vapor-liquid equilibria of polar and nonpolar mixtures.Comparison with other twogroup-contribut...The VDW-GC equation of state developed in PartⅠhas been extensively tested on the prediction of binaryand multicomponent vapor-liquid equilibria of polar and nonpolar mixtures.Comparison with other twogroup-contribution equations of state showed that VDW-GC,in general,can give slightly better predictions forhigh-pressure systems.展开更多
文摘A new group-contribution equation of state(VDW-GC EOS)is developed by applying the group-contributionconcept to a local composition version of the modified van der Waals equation of state(VDW-DDLC EOS),which is established by combining the density dependent local composition mixing rule with the modified vander Waals equation of state.Group interaction parameter matrix for thirteen groups were determined frombinary VLE data.The new VDW-GC EOS has been extensively tested on the prediction of vapor-liquid,liquidliquid and gas-solid equilibria.In part Ⅰ the mathematical formulation of the VDW-GC EOS and the determination of the group interaction parameters are discussed.
文摘The VDW-GC equation of state developed in PartⅠhas been extensively tested on the prediction of binaryand multicomponent vapor-liquid equilibria of polar and nonpolar mixtures.Comparison with other twogroup-contribution equations of state showed that VDW-GC,in general,can give slightly better predictions forhigh-pressure systems.
