Blar i NTNU Open på forfatter "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, ... -
CO2 pipeline integrity: A new evaluation methodology
Berstad, Torodd; Dørum, Cato; Jakobsen, Jana Poplsteinova; Kragset, Steinar; Li, Hailong; Lund, Halvor; Morin, Alexandre; Munkejord, Svend Tollak; Mølnvik, Mona Jacobsen; Nordhagen, Håkon Ottar; Østby, Erling (Journal article; Peer reviewed, 2011)A coupled fluid-structure model for pipeline integrity simulations has been developed. The pipe material and fracture propagation have been modelled using the finite-element method with a local fracture criterion. The ... -
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 ... -
Integrated Techno-economic and Environmental Assessment of an Amine-based Capture
Roussanaly, Simon; Brunsvold, Amy; Hognes, Erik Skontorp; Jakobsen, Jana Poplsteinova; Zhang, Xiangping (Journal article; Peer reviewed, 2013)A systematic methodology for integrated techno-economic and environmental assessment of CCS value chains is presented and applied to assess the impact of the CO2 concentration on an amine-based post-combustion CO2 capture ... -
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 ... -
Thermodynamic models to accurately describe the PVTxy-behavior of water / carbon dioxide mixtures
Aasen, Ailo; Hammer, Morten; Skaugen, Geir; Jakobsen, Jana Poplsteinova; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2017)Carbon dioxide/water (CO2/H2O) mixtures are of much interest in carbon capture and storage, atmospheric science, in the description of human lungs and in the processing of food and beverages. We present a comprehensive ... -
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 ...