• Optimal operation of a subsea separation system including a coalescence based gravity separator model and a produced water treatment section 

      Das, Tamal; Heggheim, Sindre Johan; Dudek, Marcin; Verheyleweghen, Adriaen; Jäschke, Johannes (Journal article; Peer reviewed, 2019)
      In this work, we develop a model for a gravity separator, and we use it together with models from the literature to study the control of a subsea separation system that separates oil, gas, and water from well fluids in ...
    • Optimal Operation of Battery Storage for a Subscribed Capacity-Based Power Tariff Prosumer—A Norwegian Case Study 

      Berglund, Frida; Zaferanlouei, Salman; Korpås, Magnus; Uhlen, Kjetil (Journal article; Peer reviewed, 2019)
      The cost of peak power for end-users subject to a demand charge may be substantial, expecting to increase further with the vast growth of power-demanding devices. In cases where load-shifting is not a viable option for ...
    • Optimal Operation of Battery Storage for Peak Shaving Applications - A Norwegian Case Study for a Medium-Scale Swimming Facility 

      Berglund, Frida (Master thesis, 2018)
      With the vast implementation of power-demanding devices, the grid is facing supply challenges. A promising solution could be to implement a peak demand charge, thus encouraging end users to reduce their power demand. ...
    • Optimal Operation of Dividing Wall Columns 

      Strandberg, Jens Petter (Doktoravhandlinger ved NTNU, 1503-8181; 2011:177, Doctoral thesis, 2011)
      This thesis discusses the control and operation of dividing wall columns. In particular the attention is on the Kaibel column, a four-product dividing wall column with two side-streams. The Kaibel column has for a given ...
    • Optimal operation of energy storage in buildings - Use of hot water systems 

      Johansson, Emma Matilda (Master thesis, 2013)
      The purpose of this study is to maximize the potential which lies in domestic hot water heaters. Today the temperature function in the hot water tank is constant throughout the day and the hot water demand is met by an ...
    • Optimal Operation of Flexible Assets in a Residential Energy System: A Rolling Horizon Approach 

      Tvedt, Mikal-André (Master thesis, 2022)
      I nyere tid har løsninger for sluttbrukerfleksibilitet i etterspørselen etter strøm blitt tilgjengelige for private holdninger. Sammen med incentivordninger kan fleksible enheter generere langsiktig verdi for husholdning ...
    • Optimal Operation of Heat Exchanger Networks 

      Edvardsen, Daniel Greiner (Master thesis, 2011)
      Optimal operation of heat exchanger networks is much less studied than optimal design. The control objective of a heat exchanger network is to control the temperature out of the heat exchanger network within a certain ...
    • Optimal Operation of Hydro-Dominated Power Systems with Environmental Constraints 

      Schäffer, Linn Emelie; Korpås, Magnus; Helseth, Arild (Chapter, 2022)
      This paper studies the operation of a small renewable and hydro-dominated power system when introducing environmental constraints. The risk of rationing and the local price formation is investigated using a stochastic, ...
    • Optimal Operation of Integrated Chemical Processes: With Application to the Ammonia Synthesis 

      Straus, Julian (Doctoral theses at NTNU;2018:222, Doctoral thesis, 2018)
      Chemical processes have to be operated at their economic optimum to remain competitive. This is called optimal operation. Optimal operation is frequently incorporated using a real-time optimization approach. In this approach, ...
    • Optimal Operation of Kaibel Columns 

      Ghadrdan, Maryam (Doktoravhandlinger ved NTNU, 1503-8181; 2014:297, Doctoral thesis, 2014)
      Kaibel distillation column performs the separation of 4 products in a dividing-wall arrangement. This column provides significant energy and capital savings compared to conventional arrangements. The focus in this thesis ...
    • Optimal Operation of Parallel Heat Exchanger Networks 

      Aaltvedt, Stian (Master thesis, 2013)
      Optimal operation of parallel heat exchanger networks is desirable for many processesaiming to achieve increased supply and potentially higher profit. The aimis to control the final outlet temperature within a certain ...
    • Optimal Operation of Refrigeration Cycles 

      Jensen, Jørgen Bauck (Doktoravhandlinger ved NTNU, 1503-8181; 2008:91, Doctoral thesis, 2008)
    • Optimal Operation of Small LNG Refrigeration Cycles 

      Leguizamón, Alexander (Master thesis, 2016)
      With the recent increases in the market of natural gas, new production alternatives have become available. One of these is the production in remote places. To increase the profit of this process, it is necessary to count ...
    • Optimal Operation of Wind Farms 

      Brandal, Andre (Master thesis, 2013)
      In this project we considered the wind farm operation planning to maximize the total power produced. The wind farm consisted of a row of three wind turbines. Two strategies were evaluated. The first strategy was the effect ...
    • Optimal operation strategies for dynamic processes under uncertainty 

      de Oliveira, Vinicius (Doctoral thesis at NTNU;2016:105, Doctoral thesis, 2016)
      The main focus of this thesis is to find implementation strategies for the optimal operation of processes during transients. That is, we do not focus on the algorithms to solve a given dynamic optimization problem, but ...
    • Optimal Operation with Changing Active Constraint Regions using Classical Advanced Control 

      Reyes-Lúa, Adriana; Zotica, Cristina Florina; Skogestad, Sigurd (Journal article; Peer reviewed, 2018)
      With ”classical advanced control” we mean the control structures that are commonly used in industry for multivariable control. These have been in use for at least 50 years, but surprisingly there is little literature ...
    • Optimal parallellkjøring av eksportkompressorer 

      Foss, Truls (Master thesis, 2013)
      Verdens forbruk av naturgass er stadig økende, og som følge av dette har eksport av gass fra Norge blitt en viktig del av petroleumsindustrien. Statoils anlegg på Kollsnes er sentral i Norges eksport av naturgass og ved ...
    • Optimal partitioning of smart distribution systems into supply-sufficient microgrids 

      Barani, Mostafa; Aghaei, Jamshid; Akbari, Mohammad Amin; Niknam, Taher; Farahmand, Hossein; Korpås, Magnus (Journal article; Peer reviewed, 2018)
      This paper presents a systematic procedure for partitioning smart distribution systems into supply-sufficient microgrids. Firstly, renewable distributed generations (DGs) are optimally allocated in the distribution system. ...
    • Optimal path following for underactuated marine vessels 

      Nordahl, Håvard (Master thesis, 2008)
      This report presents two optimization problems, where three cost-functions are suggested for each. The goal for the first optimization problem is to find a time variant look-ahead distance which improves the performance ...
    • Optimal path for the flow of yield stress fluids 

      Lanza, Federico (Doctoral theses at NTNU;2023:386, Doctoral thesis, 2023)
      Numerous real-world applications depend on understanding how liquids or gases flow through the tiny holes of materials like soil or rocks, called “porous media”. These applications range from cleaning up polluted groundwater ...