Blar i USN Open Archive på forfatter "Thapa, Rajan Kumar"

Viser treff 21-31 av 31

    • Pelletization and Gasification of Waste Feedstock for Syngas Production 

      Shah, Roshan (Master thesis, 2023)
      Thermal degradation of wastes for energy extraction is a viable option that can substitute for green energy demand. Among the thermochemical conversion processes, the gasification of solid wastes gives better gaseous ...

    • Piping Components: An Analysis of the Critical Dimensions 

      Anderson, Gwen; Gjerde, Ida Helene; Helgesen, Sondre Luca; Jecmenica, Mladen; Thapa, Rajan Kumar (Peer reviewed; Journal article, 2020)
      Pipe components such as elbow, tees, and weldolets are produced at various places in the world. Although the component is produced in accordance with standard ASME (American Society of Mechanical Engineers) B16.9, measurements ...

    • Screening of Kinetic Rate Equations for Gasification Simulation Models (opptrykk) 

      Solli, KjellArne; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2018)
      The energy from biomass can be utilized through the thermochemical conversion process of pyrolysis and gasification. The process involves solid phase and fluid phase interactions. Computational Particle Fluid Dynamics ...

    • Simulation and optimization of screw feeder in a bubbling fluidized bed gasification reactor 

      Thapa, Rajan Kumar; Vaa, Trym Fehn; Vaa, Oddvin; Jaiswal, Rajan; Jecmenica, Mladen (Journal article; Peer reviewed, 2022)
      A fluidized bed biomass gasification reactor is used to produce syngas from biomass and municipal wastes. Gasification is a flexible technology where many different types of feedstocks can be used. The University of ...

    • Simulation of air-biomass gasification in a bubbling fluidized bed using CPFD model 

      Timsina, Ramesh; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten; Thapa, Rajan Kumar (Journal article; Peer reviewed, 2019)
      Biomass is a renewable energy source. Biomass gasification process produces producer gas, which can be further used for power generation or as raw materials for the production of secondary fuels. Experiment on the air ...

    • Simulation of entrained flow gasification reactor with Multi Phase Particle in Cell (MP-PIC) approach 

      Timsina, Ramesh; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten (Journal article; Peer reviewed, 2020)
      An Entrained flow gasification reactor is studied in this work. Entrained flow reactors are best suited for a feed with small particles at large capacity, at high temperatures, pressures and with short residence time. This ...

    • Simulation of Simplified Model for Reaction Kinetics in Biomass Gasification 

      Agu, Cornelius Emeka; Thapa, Rajan Kumar; Halvorsen, Britt (Conference object; Peer reviewed, 2015-11-25)
      Due to complexity in interactions between solid particles and between particles and carrier fluid, modeling of biomass gasification kinetics has been shown to be very challenging. Some commercial packages such as Barracuda ...

    • Stepwise Analysis Of Gasification Reactions With Aspen Plus And Cpfd 

      Eikeland, Marianne Sørflaten; Thapa, Rajan Kumar (Journal article; Peer reviewed, 2017)
      The energy from biomass can be utilized through the thermochemical conversion processes of pyrolysis and gasification. Biomass such as wood chips is heated in a gasification reactor to produce a synthesis gas containing ...

    • Study of agglomeration in fluidized bed gasification of biomass using CPFD simulations 

      Furuvik, Nora Cecilie Ivarsdatter; Jaiswal, Rajan; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2019)
      Fluidized beds have been widely applied for the gasification of biomass. However, at high temperatures ash melting and subsequently bed agglomeration may occur. When biomass is used for thermal conversion processes, inorganic ...

    • Study of agricultural waste gasification in an air-blown bubbling fluidized bed using a CPFD model 

      Jaiswal, Rajan; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2020)
      Gasification using a fluidized bed is a promising technology to convert agricultural residues into product gases. In this work, the syngas production potential from agricultural waste (grass pellets) is studied using ...

    • Study of fluidized bed regimes using Computational Particle Fluid Dynamics 

      Jaiswal, Rajan; Agu, Cornelius Emeka; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2018)
      The fluidization technology has a wide range of applications. In chemical synthesis, fluidized bed is used to enhance heat and mass transfer between the reacting species. More application of this technology can also be ...