Blar i USN Open Archive på forfatter "Øi, Lars Erik"

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    • Simulation of Condensation in Compressed Raw Biogas Using Aspen HYSYS 

      Øi, Lars Erik; Hovland, Jon (Journal article; Peer reviewed, 2018)
      Raw biogas typically contains 60 % methane, 40 % CO2, small amounts of other components and is saturated with water. It is a question whether raw biogas can be compressed to high pressures without condensation. The aim of ...

    • Simulation of dew points in raw biogas using PR and SRK equations of state : 

      Bråthen, Terje; Øi, Lars Erik; Hovland, Jon (Peer reviewed; Journal article, 2019)
      Biogas contains mainly methane, but raw biogas can contain large amounts of CO2 and is normally saturated with water. Condensation, especially during compression, may lead to operational problems. The aim of this work is ...

    • Simulation of improved absorption configurations for CO2 capture 

      Øi, Lars Erik; Aromada, Solomon Aforkoghene (Conference object; Peer reviewed, 2015-11-25)
      The most well-known technology for post combustion CO2 capture from exhaust gas is absorption in an amine-based solvent followed by desorption. The drawback of this method is the high heat consumption required for desorption. ...

    • Techno-economic assessment of biomethane production from syngas derived from biomass gasifier 

      Sahraro, Milad (Master thesis, 2023)
      Biomethane is one of the renewable fuels widely utilized for various purposes, including transportation, heating, and power production. Growing interest is currently seen in this biofuel production utilizing waste material ...

    • Techno-Economic Assessment of Different Heat Exchangers for CO2 Capture 

      Aromada, Solomon Aforkoghene; Eldrup, Nils Henrik; Normann, Fredrik; Øi, Lars Erik (Peer reviewed; Journal article, 2020)
      We examined the cost implications of selecting six different types of heat exchangers as the lean/rich heat exchanger in an amine-based CO2 capture process. The difference in total capital cost between different capture ...

    • Utilization of excess heat from data centers 

      Zangeneh, Vahid (Master thesis, 2022)
      The rapid growth of technology and digitization lead to an increase in the number of data centers around the world. Data center facilities enable an organization to collect its resources and infrastructure for data processing, ...

    • Utilization of excess heat from data centers. 

      Sharfuddin, Mohammad (Master thesis, 2020)
      Digitalization has influenced the rapid growth of data centers around the world. The advancement of IT and telecommunication also played a vital role in is this expansion of data centers. Data centers facilitate the ...