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Browsing Institutt for kjemisk prosessteknologi by Author 
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Browsing Institutt for kjemisk prosessteknologi by Author "Jakobsen, Jana Poplsteinova"

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    • Analysis and selection of optimal solvent-based technologies for biogas upgrading 

      Carranza Abaid, Andres; Ramos Wanderley, Ricardo; Knuutila, Hanna K; Jakobsen, Jana Poplsteinova (Journal article; Peer reviewed, 2021)
      Biogas upgrading is an important industrial process for producing biomethane, a sustainable energy source with low carbon footprint. There are three main solvent-based alternatives for biogas upgrading: water scrubbing, ...
    • A Computationally Efficient Formulation of the Governing Equations for Unit Operation Design 

      Carranza Abaid, Andres; Jakobsen, Jana Poplsteinova (Peer reviewed; Journal article, 2021)
      A computationally-efficient numerical method that uses a Pseudo-Eulerian formulation (PEF) for the design calculation of unit operations is presented and validated. This method is applicable to any unit operation that can ...
    • Effect of Uncertainties in Solvent Properties on the Techno-economic Performances of a CO2 Absorber 

      Kuncheekanna, Vishalini Nair; Jakobsen, Jana Poplsteinova; Knuutila, Hanna K (Peer reviewed; Journal article, 2020)
      The use of computational models and simulation tools is vital for design and optimisation of CO2 absorption processes. When developing these tools, mathematical submodels such as models for physical properties and mass and ...
    • Intermediate pressure reboiling in geothermal flash plant for increased power production and more effective non-condensable gas abatement 

      Novotny, Vaclav; Vitvarova, Monika; Spale, Jan; Jakobsen, Jana Poplsteinova (Peer reviewed; Journal article, 2019)
      Non-condensable gases (NCG) in condensing geothermal flash plants have negative effects as they reduce heat transfer and thus deteriorate vacuum in condenser. Therefore, it is necessary to evacuate the condenser by vacuum ...
    • A Non-Autonomous Relativistic Frame of Reference for Unit Operation Design 

      Carranza Abaid, Andres; Jakobsen, Jana Poplsteinova (Peer reviewed; Journal article, 2020)
      This contribution presents an efficient systematic algorithm for unit operation design that uses a newly developed non-autonomous relativistic frame of reference (NARF). The NARF is aimed towards the conceptual design of ...
    • Surrogate modelling of VLE: Integrating machine learning with thermodynamic constraints 

      Carranza Abaid, Andres; Svendsen, Hallvard Fjøsne; Jakobsen, Jana Poplsteinova (Peer reviewed; Journal article, 2020)
      An easy-to-implement methodology to develop accurate, fast and thermodynamically consistent surrogate machine learning (ML) models for multicomponent phase equilibria is proposed. The methodology is successfully applied ...
    • Thermodynamics of the carbon dioxide plus nitrogen plus methane (Co2 + N2 + Ch4) system: Measurements of vapor-liquid equilibrium data at temperatures from 223 to 298 K and verification of EOS-CG-2019 equation of state 

      Ottøy, Sindre; Neumann, Tobias; Stang, Hans Georg Jacob; Jakobsen, Jana Poplsteinova; Austegard, Anders; Løvseth, Sigurd Weidemann (Journal article; Peer reviewed, 2019)
      Vapor-liquid equilibria (VLE) data of the ternary mixture of CO2 + N2 + CH4 were measured at the isotherms 223 K, 253 K, 273 K, 283 K, and 298 K and for pressures in the range of 0.8 MPa–9.3 MPa. The 62 experimental dew ...

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