Browsing AURA by Author "Nielsen, Henrik Kofoed"
Now showing items 1-19 of 19
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A study of densified biochar as carbon source in the silicon and ferrosilicon production
Riva, Lorenzo; Surup, Gerrit Ralf; Buø, Therese Videm; Nielsen, Henrik Kofoed (Journal article; Peer reviewed, 2019) -
Analysis of optimal temperature, pressure and binder quantity for the production of biocarbon pellet to be used as a substitute for coke
Riva, Lorenzo; Nielsen, Henrik Kofoed; Skreiberg, Øyvind; Wang, Liang; Bartocci, Pietro; Barbanera, Marco; Bidini, Gianni; Fantozzi, Francesco (Journal article; Peer reviewed, 2019)In order to contribute to the decarbonization of the economy, efficient alternatives to coal and coke should be found not only in the power sector but also in the industrial sectors (like steel, silicon and manganese ... -
ANN modelling of CO2 refrigerant cooling system COP in a smart warehouse
Opalic, Sven Myrdahl; Goodwin, Morten; Lei, Jiao; Nielsen, Henrik Kofoed; Pardiñas, Ángel Á.; Hafner, Armin; Kolhe, Mohan Lal (Peer reviewed; Journal article, 2020)Industrial cooling systems consume large quantities of energy with highly variable power demand. To reduce environmental impact and overall energy consumption, and to stabilize the power requirements, it is recommended to ... -
Augmented Random Search with Artificial Neural Networks for energy cost optimization with battery control
Opalic, Sven Myrdahl; Goodwin, Morten; Lei, Jiao; Nielsen, Henrik Kofoed; Kolhe, Mohan Lal (Peer reviewed; Journal article, 2022)Intermittent renewable energy production and dynamic load must be balanced through appropriate control of integrated energy storage to account for the temporal discrepancy among power supply and demand. Intelligent control ... -
Circulating fluidized bed reactors – part 01 : analyzing the effect of particle modelling parameters in computational particle fluid dynamic (CPFD) simulation with experimental validation
Bandara, Janitha; Thapa, Rajan Kumar; Nielsen, Henrik Kofoed; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten (Peer reviewed; Journal article, 2019)A CPFD hydrodynamic model was developed for a circulating fluidized bed system and the simulation results were validated against experimental data based on particle circulation rate. Sensitivity of the computational mesh ... -
Considerations on factors affecting biocarbon densification behavior based on a multiparameter model
Riva, Lorenzo; Wang, Liang; Ravenni, Giulia; Bartocci, Pietro; Videm Buø, Therese; Skreiberg, Øyvind; Fantozzi, Francesco; Nielsen, Henrik Kofoed (Journal article; Peer reviewed, 2021)The optimization of upscaled biochar pelleting is limited by lack of knowledge regarding the effects of process parameters. A multiparameter model, coupled to a single pellet press unit, was for the first time applied to ... -
Digital Twin framework for automated fault source detection and prediction for comfort performance evaluation of existing non-residential Norwegian buildings
Hosamo, Haidar; Nielsen, Henrik Kofoed; Kraniotis, Dimitrios; Svennevig, Paul Ragnar; Svidt, Kjeld (Peer reviewed; Journal article, 2022)Numerous buildings fall short of expectations regarding occupant satisfaction, sustainability, or energy efficiency. In this paper, the performance of buildings in terms of occupant comfort is evaluated using a probabilistic ... -
Digital Twin of HVAC system (HVACDT) for multiobjective optimization of energy consumption and thermal comfort based on BIM framework with ANN-MOGA
Hosamo, Haidar; Hosamo, Mohsen; Nielsen, Henrik Kofoed; Svennevig, Paul Ragnar; Svidt, Kjeld (Peer reviewed; Journal article, 2022) -
A Digital Twin predictive maintenance framework of air handling units based on automatic fault detection and diagnostics
Hosamo, Haidar; Svennevig, Paul Ragnar; svidt, kjeld; Han, Daguang; Nielsen, Henrik Kofoed (Peer reviewed; Journal article, 2022)The building industry consumes the most energy globally, making it a priority in energy efficiency initiatives. Heating, ventilation, and air conditioning (HVAC) systems create the heart of buildings. Stable air handling ... -
Effect of torrefaction on properties of pellets produced from woody biomass
Wang, Liang; Riva, Lorenzo; Skreiberg, Øyvind; Khalil, Roger Antoine; Bartocci, Pietro; Yang, Qing; Yang, Haiping; Wang, Xuebin; Chen, Dengyu; Rudolfsson, Magnus; Nielsen, Henrik Kofoed (Peer reviewed; Journal article, 2020)Torrefaction has been recognized as a promising strategy to improve handling and storage properties of wood-based pellets, thus producing a uniform-quality commodity with high energy density and hydrophobicity. In this ... -
Hygrothermal conditions in Cross Laminated Timber (CLT) dwellings
Tingstveit, Merethe Solvang; Nielsen, Henrik Kofoed; Risholt, Birgit Dagrun (Peer reviewed; Journal article, 2020) -
Image Processing and Measurement of the Bubble Properties in a Bubbling Fluidized Bed Reactor
Jaiswal, Rajan; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten; Nielsen, Henrik Kofoed; Thapa, Rajan Kumar (Peer reviewed; Journal article, 2022)The efficiency of a fluidized bed reactor depends on the bed fluid dynamic behavior, which is significantly influenced by the bubble properties. This work investigates the bubble properties of a bubbling fluidized bed ... -
Improving building occupant comfort through a digital twin approach: A Bayesian network model and predictive maintenance method
Hosamo, Haidar; Nielsen, Henrik Kofoed; Kraniotis, Dimitrios; Svennevig, Paul Ragnar; Svidt, Kjeld (Peer reviewed; Journal article, 2023)This study introduces a Bayesian network model to evaluate the comfort levels of occupants of two non-residential Norwegian buildings based on data collected from satisfaction surveys and building performance parameters. ... -
Investigation on Ash Slagging Characteristics during Combustion of Biomass Pellets and Effect of Additives
Wang, Liang; Skjevrak, Geir; Skreiberg, Øyvind; Wu, Hongwei; Nielsen, Henrik Kofoed; Hustad, Johan Einar (Journal article; Peer reviewed, 2017) -
Multiobjective optimization of building energy consumption and thermal comfort based on integrated BIM framework with machine learning-NSGA II
Hosamo, Haidar; Tingstveit, Merethe Solvang; Nielsen, Henrik Kofoed; Svennevig, Paul Ragnar; svidt, kjeld (Peer reviewed; Journal article, 2022) -
On the self-heating behavior of upgraded biochar pellets blended with pyrolysis oil: Effects of process parameters
Riva, Lorenzo; Cardarelli, Alessandro; Andersen, Geir Johan; Buø, Therese Videm; Barbanera, Marco; Bartocci, Pietro; Fantozzi, Francesco; Nielsen, Henrik Kofoed (Peer reviewed; Journal article, 2020) -
A review of the Digital Twin technology for fault detection in buildings
Hosamo, Haidar; Nielsen, Henrik Kofoed; Alnmr, Ammar; Svennevig, Paul Ragnar; svidt, kjeld (Peer reviewed; Journal article, 2022) -
A Review of the Digital Twin Technology in the AEC-FM Industry
Hosamo, Haidar; Imran, Aksa; Cardenas, Juan Diego; Svennevig, Paul Ragnar; svidt, kjeld; Nielsen, Henrik Kofoed (Peer reviewed; Journal article, 2022)The Architecture, Engineering, Construction, and Facility Management (AEC-FM) industry is increasingly affected by digital technologies that monitor sensor network data and control automation systems. Advances in digital ... -
Sensitivity Analysis and Effect of Simulation parameters of CPFD Simulation in Fluidized Beds
Bandara, Janitha; Nielsen, Henrik Kofoed; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten (Journal article; Peer reviewed, 2018)Fluidized bed technology is broadly applied in industry due to its distinct advantages. CFD simulation of fluidized beds is still challenging compared to single-phase systems and needs extensive validation. Multiphase ...