Browsing Institutt for energi og prosessteknikk by Document Types "Peer reviewed"
Now showing items 1-20 of 1745
-
1D modelling of membrane-assisted chemical looping reforming
(Journal article; Peer reviewed, 2017)Membrane-assisted chemical looping reforming (MA-CLR) has been proposed as an alternative to the conventional CLR technology. In this work, a non-isothermal 1D model is used to simulate the MA-CLR fuel reactor. The effect ... -
2D simulation of temperature distribution within large-scale PEM electrolysis stack based on thermal conductivity measurements
(Journal article; Peer reviewed, 2024)Polymer electrolyte membrane electrolyser cells (PEMEC) are recognized as highly suitable for large-scale green hydrogen production from variable renewable sources. To enhance production rates in PEMECs, current densities ... -
A case study of life cycle impacts of small-scale fishing techniques in Thailand
(Journal article; Peer reviewed, 2017)Fish provides an important source of protein, especially in developing countries, and the amounts of fish consumed are increasing worldwide (mostly from aquaculture). More than half of all marine fish are caught by small-scale ... -
A comparative study of the velocity and vorticity structure in pipes and boundary layers at friction Reynolds numbers up to 10^4
(Journal article; Peer reviewed, 2019)This study presents findings from a first-of-its-kind measurement campaign that includes simultaneous measurements of the full velocity and vorticity vectors in both pipe and boundary layer flows under matched spatial ... -
A Comparison of Post-combustion Capture Technologies for the NGCC
(Journal article; Peer reviewed, 2017)Four different post-combustion capture technologies are compared for the same NGCC (electric efficiency 58.1% without CO2 capture). The technologies are aqueous amine, polymeric membranes, a low temperature sorbent and ... -
A comprehensive model for char particle conversion in environments containing O2 and CO2
(Journal article; Peer reviewed, 2015)In this work, conversion of char is studied in a simulation code that includes a simplified heterogeneous adsorption–desorption reaction mechanism for char chemical reactivity and uses GRI-Mech 3.0 as the chemical kinetic ... -
A Comprehensive Thermal and Structural Transient Analysis of a Boiler’s Steam Outlet Header by Means of a Dedicated Algorithm and FEM Simulation
(Journal article; Peer reviewed, 2020)Increasing the share of renewables in energy markets influences the daily operation of thermal power units. High capacity power units are more frequently operated to balance power grids and, thus, steam boilers are exposed ... -
A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model
(Journal article; Peer reviewed, 2019)The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ... -
A Detached-Eddy-Simulation study: Proper-Orthogonal-Decomposition of the wake flow behind a model wind turbine
(Journal article; Peer reviewed, 2018)In times of intense renewable energy development, the planning of wind farms and the improvement of their total efficiency has become a major field of research. A precise analysis of the velocity deficit, fluctuation load ... -
A fast-solving particle model for thermochemical conversion of biomass
(Journal article; Peer reviewed, 2020)Computational fluid dynamics (CFD) simulations of large-scale furnaces or reactors for thermal conversion of solid fuels remains challenging partially due to the high computational cost related to the particle sub-models. ... -
A Framework for Modeling Linear Surface Waves on Shear Currents in Slowly Varying Waters
(Journal article; Peer reviewed, 2019)We present a theoretical and numerical framework—which we dub the direct integration method (DIM)—for simple, efficient, and accurate evaluation of surface wave models allowing presence of a current of arbitrary depth ... -
A general data model for socioeconomic metabolism and its implementation in an industrial ecology data commons prototype
(Journal article; Peer reviewed, 2019)Until this day, data in industrial ecology (IE) have been commonly seen as existing within the domain of particular methods or models, such as input–output, life cycle assessment, urban metabolism, or material flow analysis ... -
A Highly-Efficient and Stable Catalyst based on Co(OH)2@Ni Electroplated on Cu-Metallized Cotton Textile for Water Splitting
(Journal article; Peer reviewed, 2019)The concept of using renewable energy to power water electrolyzers is seen as a favorable approach for the production of green and sustainable hydrogen. The electrochemical water splitting can be significantly and efficiently ... -
A Hybrid Biomass Hydrothermal Gasification- Solid Oxide Fuel Cell System Combined with Improved CHP Plant for Sustainable Power Generation
(Journal article; Peer reviewed, 2017)The most popular technique, so far, for biomass waste to energy conversion has been incineration, but this technique has raised a lot of objection among nature activists due to the release of particulate matter and pollutants ... -
A kinetic study on simultaneously boosting the mass and fixed-carbon yield of charcoal production via atmospheric carbonization
(Journal article; Peer reviewed, 2017)The mass and fixed-carbon yield of charcoal produced from woody biomass via atmospheric carbonization can be simultaneously improved by harnessing the phenomenon of secondary char formation as a result of prolonged contact ... -
A Machine Learning Approach to Correlation Development Applied to Fin-Tube Bundle Heat Exchangers
(Journal article; Peer reviewed, 2018)Heat exchanger designers need reliable thermal-hydraulic correlations to optimize heat exchanger designs. This work combines an adaptive sampling method with a Computational Fluid Dynamics (CFD) simulator to obtain increased ... -
A method to extract fishers’ knowledge (FK) to generate evidence for sustainable management of fishing gears
(Journal article; Peer reviewed, 2019)The dangerous effects of Abandoned, Lost or Discarded Fishing Gears (ALDFG) is documented in the literature. However, there exists an overall lack of understanding in quantifying the pollution loads of fishing gears (FG) ... -
A Methodology for Integrated, Multiregional Life Cycle Assessment Scenarios under Large-Scale Technological Change
(Journal article; Peer reviewed, 2015)Climate change mitigation demands large-scale technological change on a global level and, if successfully implemented, will significantly affect how products and services are produced and consumed. In order to anticipate ... -
A modified homogeneous relaxation model for CO2 two-phase flow in vapour ejector
(Journal article; Peer reviewed, 2016)In this study, the homogenous relaxation model (HRM) for CO2 flow in a two-phase ejector was modified in order to increase the accuracy of the numerical simulations The two- phase flow model was implemented on the effective ... -
A multi-impact analysis of changing ICT consumption patterns for Sweden and the EU: Indirect rebound effects and evidence of decoupling
(Journal article; Peer reviewed, 2019)Information and Communication Technology (ICT) is one of the major areas of growth in consumption seen over the last two decades. The falling prices of ICT and increasing energy efficiency of ICT may lead to reduced spending ...