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norskFakultet for ingeniørvitenskap og teknologi
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Electrical stunning and killing of Atlantic salmon
(Research report; Forskningsrapport, 2023)Atlantic salmon (Salmo salar) at various size 226-1938 g were placed in electric dry stunning either tailor head- first and then exposed to 50 Hz, 240 V AC for 0.5 and thereafter 9.5 s of electricity. This to verify whether the animal is rendered unconscious prior to killing by immersing the animal into cold brine (-14 to -18 °C) or hypoxic water, supersaturated with CO2. In addition, salmon from ... -
Towards a Concept for Digitalized Yard Logistics—Outlining the Next-Generation Features
(Chapter; Bokkapittel, 2023-09-14)Yards are industrial sites for production and servicing of ships and offshore maritime installations, such as oil and gas platforms and modules, offshore windmills, and fish farms—all essential products in the maritime industry. Although many yards are performing highly complex and technically advanced production, there is still a need to bring the internal logistics of yards to a corresponding level ... -
Hva er ditt forskningsfelt? Hva inspirerte deg til å velge dette forskningsfeltet? Hva liker du best med arbeidet ditt?
(Conference object; Konferansebidrag, 2023-10) -
A review of infrared thermography applications for ice detection and mitigation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-18)Ice accretion on various onshore and offshore infrastructures imparts hazardous effects sometimes beyond repair, which may be life-threatening. Therefore, it has become necessary to look for ways to detect and mitigate ice. Some ice mitigation techniques have been tested or in use in aviation and railway sectors, however, their applicability to other sectors/systems is still in the research phase. ... -
Intelligent self- and reconfigurable manufacturing system
(Doctoral thesis; Doktorgradsavhandling, 2023-12-12)Over the past few years, the market has shifted away from mass production towards mass customization and personalized production. This shift has made it necessary for manufacturing companies to change their manufacturing line more frequently, which can be both expensive and time-consuming. To overcome this challenge, reconfigurable manufacturing systems (RMS) have been proposed as a solution. However, ... -
Optimization of ground icing protection for aircraft: Snow endurance tests, rheological analysis and thermography of anti-icing fluids
(Conference object; Konferansebidrag, 2023-10-11) -
What is Multiphysics? Definition and Examples
(Conference object; Konferansebidrag, 2023-11) -
Collaboration with Chinese Universities and My Research Portfolio
(Conference object; Konferansebidrag, 2023-11-14) -
Do We Perform Systematic Literature Review Right? A Scientific Mapping and Methodological Assessment
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-27)Background: Systematic literature review (SLR) is increasingly utilized to maximize the element of rigor and minimize the individual bias of research synthesis. An analysis of the Web of Science (WoS) database indicates that 90% of the literature review studies using SLR have been published between 2012 and 2022. However, this progressive agenda is impaired by the lack of methodological consistency ... -
MCSINC. Summarising the main findings of work package 1: Demands and requirements for machine sensing infrastructure.
(Research report; Forskningsrapport, 2023)The main objective of the MCSINC project is to identify the opportunities and challenges with Al-based machine vision of road infrastructure under Nordic conditions. Work package 1 focuses specifically on "Demands and requirements for machine sensing infrastructure". This project report summarises the work done in work package 1 in the MCSINC-project: a state of the art on machine sensing under ... -
Voltage Control in Smart Distribution Network with High Integration of DERs
(Doctoral thesis; Doktorgradsavhandling, 2023-12-08)The thesis aims to address research questions of how the high integration of distributed energy resources (DER) influences the voltage profile of the distribution network and how the smart converters in DERs can be utilized to address voltage violations. For this purpose, the thesis investigates the coordinated active and reactive power control in smart converters to mitigate voltage violations. To ... -
Effect of pH, COD, and HRT on the Performance of Microbial Fuel Cell Using Synthetic Dairy Wastewater
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-30)Microbial fuel cells (MFC) are emerging technologies that can produce electricity while treating wastewater. A series of tests were carried out to evaluate the efficiency of this technology for treating dairy wastewater (DWW). The experiments used Shewanella baltica as an exoelectrogen in a small single MFC to treat simulated DWW. The impacts of various operational factors, specifically pH, ... -
Post-COVID ventilation design: Infection risk-based target ventilation rates and point source ventilation effectiveness
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-19)Ventilation, air filtration and disinfection have been found to be the main engineering measures to control the airborne respiratory infection transmission in shared indoor spaces. Wells-Riley model modifications allow to calculate the infection risk probability, but gaps in viral load data, risk control methods and dealing with incomplete mixing have resulted in ventilation recommendations falling ... -
Luftfuktighet i bolighus
(Master thesis; Mastergradsoppgave, 2023-05-14)Denne masteroppgaven er en litteraturstudie av luftfuktighet i bolighus, i tillegg til en case studie i bolighus knyttet til luftfuktighet ved planter. Oppgaven dekker litteraturstudie knyttet til forskning og fakta både i Norge og internasjonalt. Ifølge verdens helseorganisasjon (WHO) oppholder en person seg 90 % av tiden innendørs. Luftfuktighet er en av faktorene som er avgjørende for at inneklima ... -
Technology Modules Providing Solutions for Agile Manufacturing
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-01): In this paper, we address the most pressing challenges faced by the manufacturing sector, particularly the manufacturing of small and medium-sized enterprises (SMEs), where the transition towards high-mix low-volume production and the availability of cost-effective solutions are crucial. To overcome these challenges, this paper presents 14 innovative solutions that can be utilized to support ... -
Numerical assessment of optoelectrical properties of ZnSe–CdSe solar cell-based with ZnO antireflection coating layer
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-27)In this work, a numerical assessment of the optoelectrical properties of the ZnO–ZnSe–CdSe heterojunction for a thin and cost-effective solar cell was made by using the PC1D simulation software. The photovoltaic (PV) properties have been optimized by varying thicknesses of the absorber layer of the p-CdSe layer, the window layer of n-ZnSe, and the antireflection coating (ARC) layer of ZnO, a ... -
Atmospheric Ice Accretion on Railway Overhead Powerline Conductors- A Numerical Case Study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-16)Ice accretion on railway overhead contact wires/conductors can cause various critical operational and safety issues such as overloading, arc formation, mass imbalance, and wire galloping. The focus of this multiphase numerical study is to understand and analyze the ice accretion physics on railway overhead powerline conductors at various operating conditions. In this regard, two different ... -
Multi-objective optimization of energy-efficient retrofitting strategies for single-family residential homes: Minimizing energy consumption, CO2 emissions and retrofit costs
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-08)The retrofitting of buildings for improved energy efficiency has been recognized as crucial for achieving climate mitigation goals in Bosnia and Herzegovina (B&H). However, performing multi-objective optimizations for retrofitting existing buildings poses challenges, as it requires balancing conflicting objectives such as retrofit costs, energy savings, and CO<sub>2</sub> reduction. To tackle ... -
Study of Airflow Behavior for Duplex Circular Cylinders
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-16)The modeling of atmospheric ice accretion on duplex cylinders received a limited attention, with modeling carried by Wagner and Qing et al. The publicly available experimental data about the ice accretion on the duplex cylinders is limited to experiments of Qing et al. and Veerakumar et al. When comparing the data of Wagner and Qing et al. with the results of Veerakumar et al., the major ... -
Comparing optimization schemes for solving case studies with multiple heat exchangers using high-order pinch point temperature difference methods
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-21)Heat exchangers (HEs) are often modeled using pinch point temperature difference (ΔT<sub>pinch</sub>) methods when optimizing systems with HEs. However, even small inaccuracies in model predictions of HEs will introduce numerical noise that can cause optimization algorithms to fail. A recent study of single HEs suggests that highorder interpolation methods can compute ΔT<sub>pinch</sub> much faster ...
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