Alexandre Júlio - Academia.edu (original) (raw)
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Papers by Alexandre Júlio
Since 2007, Aspentech provides to universities, a single closed software package, joining two pro... more Since 2007, Aspentech provides to universities, a single closed software package, joining two process simulators: Aspen Plus/Dynamics and HYSYS. This work provides a comparison, analysing the integration between them and other products included into the software package. As a case study, it was selected “Ammonia Converter Design”, with available tutorials for both Aspen Plus and HYSYS, from multimedia CD “Using Process Simulators in Chemical Engineering” by Seider, Seader & Lewin. Each of these steady-state simulations has its own thermodynamic model and specific database. Using, for reference, an ammonia synthesis process published on “Ullmann's encyclopedia of industrial chemistry”, it has been realized that none of the thermodynamic models simulate accurately the ammonia condensation. A new Aspen Plus thermodynamic model, published by AspenTech in April/2008, provided good agreement with the reference. But only the next version (V7.0) will allow the implementation of the same...
Since 2007, Aspentech provides to universities, a single closed software package, joining two pro... more Since 2007, Aspentech provides to universities, a single closed software package, joining two process simulators: Aspen Plus/Dynamics and HYSYS. This work provides a comparison, analysing the integration between them and other products included into the software package. As a case study, it was selected “Ammonia Converter Design”, with available tutorials for both Aspen Plus and HYSYS, from multimedia CD “Using Process Simulators in Chemical Engineering” by Seider, Seader & Lewin. Each of these steady-state simulations has its own thermodynamic model and specific database. Using, for reference, an ammonia synthesis process published on “Ullmann's encyclopedia of industrial chemistry”, it has been realized that none of the thermodynamic models simulate accurately the ammonia condensation. A new Aspen Plus thermodynamic model, published by AspenTech in April/2008, provided good agreement with the reference. But only the next version (V7.0) will allow the implementation of the same...