Browsing NTNU Open by Author "Halvorsen, Ivar J."

Now showing items 1-7 of 7

    • Analyse av reguleringsstruktur for LNG-anlegg 

      Jøndal, Henrik (Master thesis, 2008)
      For å oppnå en mest mulig lønnsom drift av et LNG anlegg, er det ønskelig at den til enhver tid opererer nærmest mulig sine optimaliserte tilstander. Dette gjelder i nærvær av alle mulig forstyrrelser som kan kunne påvirke ...

    • Designing packed multi-partition wall dividing wall columns 

      Dejanovic, I.; Matijasevic, L.; Halvorsen, Ivar J.; Skogestad, Sigurd; Kaibel, B.; Jansen, H.; Olujic, Z. (Lecture, 2011)

    • Minimum Energy for the four-product Kaibel-column 

      Halvorsen, Ivar J.; Skogestad, Sigurd (Lecture, 2006)

    • Minimum Energy Operation of Petlyuk Distillation Columns - Nonsharp Product Specification 

      Halvorsen, Ivar J.; Skogestad, Sigurd (Chapter, 2009)
      The Petlyuk or fully thermally coupled distillation arrangement has the ability to separate a ternary feed into three pure products with an energy consumption 20-30% below conventional arrangements. The most interesting ...

    • Model Predictive Control of a Kaibel Distillation Column 

      Kvernland, Martin Krister; Halvorsen, Ivar J.; Skogestad, Sigurd (Journal article; Peer reviewed, 2010)
      This is a simulation study on controlling a Kaibel distillation column with model predictive control (MPC). A Kaibel distillation column has several advantages compared with conventional binary column setups. The Kaibel ...

    • On-Line PI Controller tuning Using Closed-Loop Setpoint Response 

      Shamsuzzoha, Mohammad; Skogestad, Sigurd; Halvorsen, Ivar J. (Journal article; Peer reviewed, 2010)
      The proposed method is similar to the Ziegler-Nichols (1942) tuning method, but it is faster to use and does not require the system to approach instability with sustained oscillations. The method requires one closed-loop ...

    • Practical control of dividing-wall columns 

      Strandberg, Jens; Skogestad, Sigurd; Halvorsen, Ivar J. (Chapter, 2010)
      This paper studies the practical implementation of stabilizing control for a Kaibel dividing-wall column. Control configurations with varying number of temperature loops are tested and compared with special attention to ...