Recent Submissions

  • Raman Spectroscopy as an Online Monitoring Tool for CO2 Capture Process: Demonstration Using a Laboratory Rig 

    Jinadasa, Migel Hewage Wathsala N.; Jens, Klaus-Joachim; Øi, Lars Erik; Halstensen, Maths (Journal article; Peer reviewed, 2017)
    A laboratory CO2 capture rig at USN was used as a demonstration plant to show the feasibility of Raman spectroscopy for online monitoring of speciation in CO2 capture process. The spectroscopy was integrated to lean and ...
  • Experiences and trends in control education: a HIOA/USN perspective 

    Komulainen, Tiina M.; Alcocer, Alex; Haugen, Finn (Chapter; Peer reviewed, 2016)
    Global trends in higher education including e-learning, massive open online courses, and new teaching methods have positively affected control education. Control course content has evolved due to changes in industrial ...
  • Semi Discrete Scheme for the Solution of Flow in River Tinnelva 

    Dissanayake, Susantha; Sharma, Roshan; Lie, Bernt (Chapter; Peer reviewed, 2016)
    The Saint-Venant equation is a mathematical model which could be used to study water flow in an open channel, river etc. The Kurganov-Petrova (KP) method, which is a second order scheme, is used to solve the Saint-Venant ...
  • Modeling and Simulation of Multi-Room Buildings 

    Perera, D.W.U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)
    Buildings are one of the largest energy consumers in the world which accounts for nearly 40% of the total global energy consumption. In the countries where cold climate conditions predominate, space heating is the key ...
  • Structural observability analysis and EKF based parameter estimation of building heating models 

    Perera, D.W.U.; Perera, M.Anushka S.; Pfeiffer, Carlos; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)
    Research for enhanced energy-efficient buildings has been given much recognition in the recent years owing to their high energy consumptions. Increasing energy needs can be precisely controlled by practicing advanced ...
  • On closed loop transient response system identification 

    Dalen, Christer; Ruscio, David (Journal article; Peer reviewed, 2016)
    Some methods for transient closed loop step response system identification presented in the literature are reviewed. Interestingly some errors in a method published in the early 80's where propagated into a recently published ...
  • Estimation of the Heating Time of Small-Scale Buildings Using Dynamic Models 

    Perera, Degurunnehalage Wathsala Upamali; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)
    Most buildings are not continuously occupied, such as office buildings, schools, churches and many residential buildings. Maintaining comfortable conditions only during the occupied periods reduces the energy costs. This ...
  • Model-Free Predictive Anti-Slug Control of a Well-Pipeline-Riser 

    Dalen, Christer; Ruscio, David (Journal article; Peer reviewed, 2016)
    Simplified linearized discrete time dynamic state space models are developed for a 3-phase well-pipeline-riser and tested together with a high fidelity dynamic model built in K-Spice and LedaFlow. In addition the Meglio ...
  • When three traits make a line: evolution of phenotypic plasticity and genetic assimilation through linear reaction norms in stochastic environments 

    Ergon, Torbjørn; Ergon, Rolf (Journal article; Peer reviewed, 2016)
    Genetic assimilation emerges from selection on phenotypic plasticity. Yet, commonly used quantitative genetics models of linear reaction norms con- sidering intercept and slope as traits do not mimic the full process of ...
  • Dynamic Model of an Ammonia Synthesis Reactor Based on Open Information 

    Jinasena, Asanthi; Lie, Bernt; Glemmestad, Bjørn (Chapter; Peer reviewed, 2016)
    Ammonia is a widely used chemical, hence the ammonia manufacturing process has become a standard case study in the scientific community. In the field of mathematical modeling of the dynamics of ammonia synthesis reactors, ...
  • Optimal Operation of the Peat Drying Process in Steam Tube Dryers 

    Kulakovsky, Leonid; Rosen, Victor; Sharma, Roshan; Pfeiffer, Carlos; Lie, Bernt (Conference object; Peer reviewed, 2015-11-25)
    Ukraine is an energy-dependent country and aims to reduce the import of natural gas, heat, and power in general. This implies extracting fuel from her own natural resources; one relevant and readily available energy carrier ...
  • Model based control for run-of-river system. Part 1: Model implementation and tuning 

    Vytvytskyi, Liubomyr; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2015)
    Optimal operation and control of a run-of-river hydro power plant depends on good knowledge of the elements of the plant in the form of models. River reaches are often considered shallow channels with free surfaces. A ...
  • Parameter and State Estimation of Large-Scale Complex Systems Using Python Tools 

    Perera, M. Anushka S.; Hauge, Tor Anders; Pfeiffer, Carlos Fernando (Journal article; Peer reviewed, 2015)
    This paper discusses the topics related to automating parameter, disturbance and state estimation analysis of large-scale complex nonlinear dynamic systems using free programming tools. For large-scale complex systems, ...
  • Where impact got going 

    Tiller, Michael; Winkler, Dietmar (Conference object; Peer reviewed, 2015-09-18)
    This paper discusses the impact package manager. The primary goal of this project is to support the development of a healthy eco-system around Modelica. For many other languages, the existence of an easy to use package ...
  • Modeling and Simulation of Triclosan Kinetics and Distribution in Humans Using a PBPK Model 

    Maharjan, Samee; Sharma, Roshan; Husøy, Trine; Dirven, Hubert; Andreassen, Monica; Lie, Bernt (Conference object; Peer reviewed, 2015-11-25)
    Personal care products (PCPs) such as soaps, perfumes, toothpastes, lotions, etc. contain various chemicals. Triclosan (TCS) is widely used as an antibacterial additive in PCPs. Traces of TCS are found in human plasma and ...
  • Model-free optimal anti-slug control of a well-pipeline-riser in the K-Spice/LedaFlow simulator 

    Dalen, Christer; Di Ruscio, David; Nilsen, Roar (Journal article; Peer reviewed, 2015)
    Simplified models are developed for a 3-phase well-pipeline-riser and tested together with a high fidelity dynamic model built in K-Spice and LedaFlow. These models are developed from a subspace algorithm, i.e. Deterministic ...
  • Modeling for control of run-of-river power plant Grønvollsfoss 

    Vytvytskyi, Liubomyr; Sharma, Roshan; Granstrøm, Ingunn; Lie, Bernt (Conference object; Peer reviewed, 2015-11-25)
    Design of optimal operation and control of a run-of-river hydro power plant depends on good models for the elements of the plant. River reaches are often considered to be shallow channels with free surface flow. A typical ...
  • Improved model for solar heating of buildings 

    Lie, Bernt (Conference object; Peer reviewed, 2015-11-25)
    A considerable future increase in the global energy use is expected, and the effects of energy conversion on the climate are already observed. Future energy conversion should thus be based on resources that have negligible ...
  • Model based control for run-of-river system. Part 2: Comparison of control structures 

    Vytvytskyi, Liubomyr; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2015)
    Optimal operation and control of a run-of-river hydro power plant depend on good knowledge of the elements of the plant in the form of models. Both the control architecture of the system, i.e. the choice of inputs and ...
  • Small scale arc fault testing of medium voltage metal enclosed switchgear 

    Fjeld, Elin; Hagen, Svein Thore (Journal article; Peer reviewed, 2016-03-16)
    Internal arc fault tests are important for ensuring the safety of medium-voltage metal-enclosed switchgears. Since these tests are conducted at full scale, the costs of the test objects as well as the high-power laboratory ...

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