• A Shortcut Design for Kaibel Columns Based on Minimum Energy Diagrams 

      Ghadrdan, Maryam; Halvorsen, Ivar Johan; Skogestad, Sigurd (Journal article; Peer reviewed, 2011)
      In this paper, a shortcut procedure is proposed to design a 4-product dividing-wall column. It is based on the information derived from Vmin diagram. This has the advantage of having more meaningful guesses for energy ...
    • A simple approach for on-line PI controller tuning using closed-loop setpoint responses 

      Shamsuzzoha, Mohammad; Skogestad, Sigurd; Halvorsen, Ivar Johan (Journal article; Peer reviewed, 2010)
    • Cybersecurity for Process Control with Cloud Solutions 

      Skaret, Sigurd (Master thesis, 2020)
      Denne masteroppgaven er skrevet i samarbeid med det SINTEF-ledede forskningsprosjektet "Towards Autonomy in Process Industries" (TAPI). Målet deres er å føre den norske prosessindustrien mot autonomi, og de ser spesielt ...
    • Dividing wall columns for natural gas liquefaction plants 

      Halvorsen, Ivar Johan; Dejanovic, Igor; Olujic, Zarko; Skogestad, Sigurd (Journal article; Peer reviewed, 2018)
      In order to meet current carbon dioxide emissions reduction challenges, natural gas processing and refining industries have to find the ways to minimize energy requirements of distillation operations. Building on foundations ...
    • Energy efficient distillation 

      Skogestad, Sigurd; Halvorsen, Ivar Johan (Journal article; Peer reviewed, 2011)
      Distillation is responsible for a significant amount of the energy consumption of the world’s process industry and also in the natural gas processing. There is a significant energy saving potential that can be obtained by ...
    • Minimum Energy Requirements in Complex Distillation Arrangements 

      Halvorsen, Ivar Johan (Dr. ingeniøravhandling, 0809-103X; 2001:43, Doctoral thesis, 2001)
      Distillation is the most widely used industrial separation technology and distillation units are responsible for a significant part of the total heat consumption in the world’s process industry. In this work we focus on ...
    • Multi-Product Dividing Wall Columns: A Simple and Effective Assessment and Conceptual Design Procedure 

      Halvorsen, Ivar Johan; Skogestad, Sigurd; Dejanovic, Igor; Matijasevic, Ljubica; Olujic, Zarko (Journal article; Peer reviewed, 2011)
      The objective of this paper is to further exploit and demonstrate the potential benefits of a V-min diagram based analysis, using a fifteen component feed mixture as base case. Detailed explanations are given on how to ...
    • A novel hybrid analysis and modeling approach applied to aluminum electrolysis process 

      Lundby, Erlend Torje Berg; Rasheed, Adil; Gravdahl, Jan Tommy; Halvorsen, Ivar Johan (Peer reviewed; Journal article, 2021)
      Aluminum electrolysis cells are characterized by harsh environments where several measurements have to be done manually. Due to the operational costs related to manual sampling, the sampling rates of these measurements are ...
    • 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 ...