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Rúnar Unnþórsson - Professor

Rúnar Unnþórsson

–

School of Engineering and Natural Sciences

Rúnar Unnþórsson

Professor

Head of faculty

Phone
525 - 4954 897-6969
Email
runson [at] hi.is

Unit
Faculty of Industrial Engineering, Mechanical Engineering and Computer Science
Website
https://vhi.hi.is/is/starfsmenn/akademiskir/runar-unnthorsson

Consultation hours
By appointment - please send me an email.
ORCID site
https://orcid.org/0000-0002-1960-0263
Research portal – Rúnar Unnþórsson

Published works

2024

A Study of Parallel and Competitive Reaction Schemes in Kinetic Modeling of Plastic PyrolysisACS Omega
Kinetic Modeling Of Nutshells Pyrolytic ProductsAIP Conference Proceedings
The effects of visual and auditory synchrony on human foragingAttention, Perception, and Psychophysics

2023

Discrimination of Vibrotactile Stimuli
Evaluating the Optimum Distance between Voice Coil Actuators Using the Relative Point Localization Method on the ForearmActuators
Revisiting the reaction scheme of slow pyrolysis of woody biomassEnergy
A Municipal Waste Heat Dissipation Modular Approach for Open Field Heated Agriculture
Discrimination Accuracy of Sequential Versus Simultaneous Vibrotactile Stimulation on the ForearmApplied Sciences
The Haptic Intensity Order Illusion Is Caused by Amplitude ChangesACM Transactions on Applied Perception
Sensory Substitution
Effects of Stimulus Frequency and Location on Vibrotactile Discrimination Performance Using Voice Coil Actuators on the ForearmActuators
Prediction of Head Related Transfer Functions Using Machine Learning ApproachesAcoustics
Improving Fuel Efficiency of a Boat by Retrofitting Propeller

2022

Performance Investigation of Biomass Gasification for Syngas and Hydrogen Production Using Aspen PlusOpen Journal of Modeling and Simulation
Analyzing the Process of Seaweed Drying in a Drying Cabinet
Implicit Equation for Photovoltaic Module Temperature and Efficiency via Heat Transfer Computational ModelThermo
Mathematical Modeling and Experiments on Pyrolysis of Walnut Shells Using a Fixed-Bed ReactorChemEngineering
Preserving Auditory Cues for Human Echolocation Training: A Geometrical Acoustics Study Using a Benchmark Dataset (BRAS)
Speed-Up of Machine Learning for Sound Localization via High-Performance Computing
Producing High-Strength Pellets From Seaweed, Sawdust, and Hay for the Purpose of Gasification
Vibrotactile Sleeve to Improve Music Enjoyment of Cochlear Implant Users
Design and Fabrication of a Test Rig for a New Approach on Health Monitoring of Roller Bearings Using Acoustic Emission
Replicating Human Sound Localization with a Multi-Layer Perceptron
Vibrotactile Threshold Measurements at the Wrist Using Parallel Vibration ActuatorsACM Transactions on Applied Perception
Dioxin Formation in Biomass Gasification: A ReviewEnergies
Kinetic modeling of nutshells pyrolytic products
The Latest Advances in Wireless Communication in Aviation, Wind Turbines and BridgesInventions

2021

Direct Use of Geothermal Resources for Sustainable Circular Food Production
Hydrogen production via biomass gasification: simulation and performance analysis under different gasifying agentsBiofuels
Performance analysis of power generation by wood and woody biomass gasification in a downdraft gasifierInternational Journal of Applied Power Engineering (IJAPE)
Thermoelectric Monitoring Systems in Iceland
Repurposing Waste Geothermal Hot Water for Outdoor Agricultural Enhancement in Hveragerdi
Gasification of Woody Biomasses and Forestry Residues: Simulation, Performance Analysis, and Environmental ImpactFermentation
Modeling of Hydrogen Production by Applying Biomass Gasification: Artificial Neural Network Modeling ApproachFermentation
Bioethanol Production via Herbaceous and Agricultural Biomass Gasification Integrated with Syngas FermentationFermentation
A Practical Approach for Estimating the Optimum Tilt Angle of a Photovoltaic Panel for a Long Period—Experimental Recorded DataSolar
Gasification of woody biomasses and forestry residuesFermentation
A Practical Approach for Estimating the Optimum Tilt Angle of a Photovoltaic Panel for a Long Period—Experimental Recorded DataSolar
GEORG Geothermal Energy Research Cluster Initiative
Frammistöðumælir tækniteymaVerktækni
Modeling of hydrogen production by applying biomass gasificationFermentation
A Practical Approach for Estimating the Optimum Tilt Angle of a Photovoltaic Panel for a Long Period—Experimental Recorded DataSolar
Artificial Neural Network Modeling of Bioethanol Production Via Syngas FermentationBiophysical Economics and Sustainability
Dioxin and Furan Emissions from Gasification
Evaluating team performance in a student led multidisciplinary project course with the painter methodInternational Journal of Engineering Education
Bioethanol production via herbaceous and agricultural biomass gasification integrated with syngas fermentationFermentation
Estimation of Spectral Notches from Pinna MeshesIEEE/ACM Transactions on Audio Speech and Language Processing
Cascade Utilization of Geothermal Waste Heat for Enhanced Outdoor Crop Production

2020

The equivalence of stoichiometric and non-stoichiometric methods for modeling gasification and other reaction equilibriaRenewable and Sustainable Energy Reviews
Artificial neural network integrated with thermodynamic equilibrium modeling of downdraft biomass gasification-power production plantEnergy
Development of a New Stoichiometric Equilibrium-Based Model for Wood Chips and Mixed Paper Wastes Gasification by ASPEN Plus
Energy Harvesting Technologies for Structural Health Monitoring of Airplane Components—A ReviewSensors
Simulation and Performance Analysis of Integrated Gasification–Syngas Fermentation Plant for Lignocellulosic Ethanol ProductionFermentation
Frammistöðumat á umfangsmiklum nemendateymumVerktækni - Tímarit Verkfræðingafélags Íslands
Simulation of small-scale waste biomass gasification integrated CHP: A comparative performance analysis for timber and wood wasteInternational Journal of Applied Power Engineering (IJAPE)
Energy harvesting technologies for structural health monitoring of airplane components—a reviewSensors (Switzerland)
Techno-Economic Analysis of Power Production by Using Waste Biomass GasificationJournal of Power and Energy Engineering (JPEE)
Effect of coronavirus disease 2019 on co<inf>2</inf> emission in the worldAerosol and Air Quality Research
The equivalence of stoichiometric and non-stoichiometric methods for modeling gasification and other reaction equilibriaRenewable and Sustainable Energy Reviews
3D ear shape as an estimator of hrtf notch frequency
Performance analysis and environmental assessment of small-scale waste biomass gasification integrated CHP in IcelandEnergy
Dataset of biomass characteristics and net output power from downdraft biomass gasifier integrated power production unitData in Brief
Techno‑Economic and Environmental Assessment of Power Supply Chain by Using Waste Biomass Gasification in IcelandBiophysical Economics and Sustainability
Artificial neural network integrated with thermodynamic equilibrium modeling of downdraft biomass gasification-power production plantEnergy

2019

Bass as an indicator of quality : Design of an In-Lab Experimentation Rack System for the ACUTE Multi-ChannelTactileSystem
Misure di HRTF su una testa KEMAR con padiglioni auricolari intercambiabili
A review of biomass gasification modellingRenewable and Sustainable Energy Reviews
Open field heated agriculture for enhanced crop production using waste geothermal steam, condensate, and hot water to produce marketable crops in Iceland
Thermoelectric generator-based system for energizing low-power communication and geolocation electronics
Development of a new stoichiometric equilibrium-based model for wood chips and mixed paper wastes gasification by Aspen plus
Development of a New Stoichiometric Equilibrium-Based Model for Wood Chips and Mixed Paper Wastes Gasification by ASPEN Plus Name of the conference publicationAmerican Society of Mechanical Engineers (ASME)
Vendikennsla bætir árangur nemenda á lokaprófi í fyrsta árs verkfræðinámskeiðiVerktækni - Tímarit Verkfræðingafélags Íslands
Thermoelectric Generator Using Passive Cooling
Prioritization of Bioethanol Production Systems from Agricultural and Waste Agricultural Biomass Using Multi-criteria Decision MakingBiophysical Economics and Resource Quality
Waste Biomass Gasification Simulation Using Aspen Plus: Performance Evaluation of Wood Chips, Sawdust and Mixed Paper WastesJournal of Power and Energy Engineering
Design of an In-Lab Experimentation Rack System for the ACUTE Multi-Channel Tactile System
The intensity order illusionJournal of Neurophysiology
A detachable thermoelectric generator as a power source for a 3G camera network using a steam pipe as a heat source
Open field heating of green roofs and small arable land plots using waste steam and hot water from geothermal, municipal and cogen sources to enhance plant growth
The viking HRTF dataset
Evaluation of Two Music Tactile Display Encodings for Cochlear Implant Recipients

2018

On Authority in Academia
Enhanced methane production from pig slurry with pulsed electric field pre-treatmentEnvironmental Technology (United Kingdom)
Thermoelectric Powered Security Systems in Iceland Using a Geothermal Steam Pipe as a Heat Source
Societal and environmental impact of high energy return on investment (EROI) energy access
Enhanced methane production from pig slurry with pulsed electric field pre-treatmentEnvironmental Technology (United Kingdom)
Sound of vision 3D virtual training environments-a gamification approach for visual to audio-haptic sensory substitutionRevue Roumaine des Sciences Techniques Serie Electrotechnique et Energetique
Uniaxial and lateral strain behavior of ribbed reinforcement bars inspected with digital image correlationStructural Concrete
Current Use and Future Perspectives of Spatial Audio Technologies in Electronic Travel AidsWireless Communications and Mobile Computing
An Assessment of the Sustainability of Lignocellulosic Bioethanol Production from Wastes in IcelandEnergies
Introducing a new haptic illusion to increase the perceived resolution of tactile displays
On Improving Academic-Industry Collaboration
Measuring relative vibrotactile spatial acuity: effects of tactor type, anchor points and tactile anisotropyExperimental Brain Research
NordicSMC
Evaluation of an Audio-haptic Sensory Substitution Device for Enhancing Spatial Awareness for the Visually ImpairedOptometry and Vision Science
Blind wayfinding with physically-based liquid soundsInternational Journal of Human-Computer Studies

2017

Usability and Effectiveness of Auditory Sensory Substitution Models for the Visually Impaired
Heat pumps in subarctic areas: current status and benefits of use in IcelandInternational Journal of Energy and Environmental Engineering
Flipped classroom improves the student's exam performance in a first year engineering courseInternational Journal of Engineering Education
Improving the audio game–playing performances of people with visual impairments through multimodal trainingJournal of Visual Impairment and Blindness
Auditory depth map representations with a sensory substitution scheme based on synthetic fluid sounds
A Step towards the Hydrogen Economy—A Life Cycle Cost Analysis of A Hydrogen Refueling StationEnergies
Relative vibrotactile spatial acuity of the torsoExperimental Brain Research
Methane yield enhancement via electroporation of organic wasteWaste Management
Improving the Audio Game-Playing Performances of People with Visual Impairments Through Multimodal TrainingJournal of Visual Impairment & Blindness
A Step towards the Hydrogen Economy—A Life Cycle Cost Analysis of A Hydrogen Refueling StationEnergies
Virtual environments for training visually impaired for a sensory substitution device
Energy Return on Investment for AquaponicsBiophysical Economics and Resource Quality
Calculations of environmental benefits from using geothermal energy must include the rebound effectGeothermics
Different approaches to aiding blind persons in mobility and navigation in the "naviton" and "sound of vision" projects
3G security camera network using a thermoelectric generator powered by a geothermal steam pipe in Iceland
Methane yield enhancement via electroporation of organic wasteWaste Management

2016

The Sound of Vision Project: On the Feasibility of an Audio-Haptic Representation of the Environment, for the Visually ImpairedBrain Sciences
GEORG
A thermoelectric powered quadruped robotic system for remote monitoring of geothermal open field heated gardens in Iceland
Taxonomy of Means and Ends in Aquaculture Production—Part 2: The Technical Solutions of Controlling Solids, Dissolved Gasses and pHWater
Designing sensory-substitution devices: Principles, pitfalls and potential1Restorative Neurology and Neuroscience
Taxonomy of means and ends in aquaculture production-part 4Water (Switzerland)
Design of a low-power quadruped robot for remote data acquisition in a heated garden
Chapter 2: Corporate Policies and Investment Decisions, part 2
Heat transfer analysis of shell-and-helical-coil heat exchangers
Taxonomy of means and ends in aquaculture production-Part 2: The technical solutions of controlling solids, dissolved gasses and pHWater (Switzerland)
Taxonomy of Means and Ends in Aquaculture Production—Part 3: The Technical Solutions of Controlling N Compounds, Organic Matter, P Compounds, Metals, Temperature and Preventing DiseaseWater
Model-based obstacle sonification for the navigation of visually impaired persons
Designing sensory-substitution devices: Principles, pitfalls and potential <sup>1</sup>Restorative Neurology and Neuroscience
A method for estimating annual energy production using Monte Carlo wind speed simulationEnergies
Translational research—the need of a new bioethics approachJournal of Translational Medicine
Taxonomy of Means and Ends in Aquaculture Production—Part 1: The FunctionsWater
Translational research—the need of a new bioethics approachJournal of Translational Medicine
Taxonomy of Means and Ends in Aquaculture Production—Part 1: The FunctionsWater
Sound of vision - Spatial audio output and sonification approaches
Design and construction of a heated garden system utilizing steam condensate from an on site boiler
Thermally enhanced open field heating agricultural system using waste geothermal hot water and low temperature steam in Iceland and waste municipal steam in New York city
Design of a clamp for a thermoelectric generator using bimetallic thermal properties
Sonificazione di ostacoli come ausilio alla deambulazione di non vedenti

2015

Theorizing for maintenance management improvementsEnergies
Levelized cost of energy analysis of awind power generation system at Búrfell in IcelandEnergies
Er samhengi milli verkefnaálags og prófseinkunna í fyrsta árs verkfræðinámskeiði?Verktækni - Tímarit Verkfræðingafélags Íslands
Point of Use Automated Irrigation System For Enhanced Bottom Heat Agriculture Using Waste Steam Condensate in New York City And Waste Geothermal Hot Water and Steam Condensate in IcelandTransactions - Geothermal Resources Council
Enhanced pig slurry biomethanation using pulsed electric field pre-treatment
Energy return on investment of Austrian sugar beet: A small-scale comparison between organic and conventional productionBiomass and Bioenergy
A longitudinal study of the relations between workload, grades and student ratings in a first year engineering courseInternational Journal of Engineering Education
Using pulsed electric field pre-treatment to improve methane production
Point of use thermoelectric powered automated irrigation system for an intesive shallow bottom heat system using waste geothermal hot water and steam condensate in Iceland
Accelerated plant growth results from an intensive shallow bottom heat system using waste geothermal hot water and steam condensate in Iceland
Innovation and development in geothermal turbine maintenance based on Icelandic experienceGeothermics
Geothermal wellhead maintenanceGeothermics
Turbine repair at Nesjavellir geothermal power plantGeothermics

2014

Designing and installing a retrofit heated green roof using either co-gen waste hot water or municipal waste steam heat as energy source
Wellhead scaling problems in geothermal power plants addressed using a needle valve derivative
Ideal EROI (energy return on investment) deepens the understanding of energy systemsEnergy
Simulation based grid optimization to enhance renewable energy storage in Iceland
Necessity is the mother of invention
Enhanced agricultural production from an intensive bottom heat system using waste geothermal hot water and steam condensate in Iceland
Web accessible security camera system independently powered by a point of use thermoelectric generator using geothermal pipes as a heat source
Go with the flow
Geothermal power plant maintenanceEnergies
Energy return on investment of hydroelectric power generation calculated using a standardised methodologyRenewable Energy
A web-accessible robotics monitoring system powered by a thermoelectric generator connected to a battery

2013

Repurposing waste steam and hot water to accelerate plant growth in heated green roofs
New design solves scaling problems on geothermal control valvesPower
Hit Detection and Determination in AE Bursts
Specified maintenance of steam turbines in geothermal power plants
Hot water production improves the energy return on investment of geothermal power plantsEnergy
Waste geothermal hot water for enhanced outdoor agricultural production
A Thermoelectric-Based Point of Use Power Generator for Steam Pipes; Geo-Heat Center Quarterly BulletinGeo-Heat Center Quarterly Bulletin
Operation and maintenance in Icelandic geothermal power plants-structure and hierarchy

2012

Thermoelectric-based power generator for powering microcontroller based security camera
Waste-heat for pre-heating internal combustion engines
Identifying and Monitoring Evolving AE Sources
Fin drive propulsion

2011

CT Based Models for Monitoring Bone Changes in Paraplegic Patients Undergoing Functional Electrical Stimulation
Geothermal heat in agriculture
A thermoelectric-based point of use power generator for steam pipes

2009

AE Entropy for the Condition Monitoring of CFRP Subjected to Cyclic FatigueJournal of Acoustic Emission
Acoustic Emission Feature for Early Failure Warning of CFRP Composites Subjected to Cyclic FatigueJournal of Acoustic Emission

2008

Acoustic emission based fatigue failure criterion for CFRPInternational Journal of Fatigue
Monitoring The Evolution of Individual AE Sources In Cyclically Loaded FRP CompositesJournal of Acoustic Emission

2007

Monitoring the Evolution og Individual AE Sources in Cyclically Loaded FRP Composites
On Using AE Hit Patterns for Monitoring Cyclically Loaded CFRP
On Using AE Hit Patterns for Monitoring Cyclically Loaded CFRPJournal of Acoustic Emission

2005

Fault Detection of CRFP During Initial Loading
Predicting Fatigue Strength of CFRP During Fatigue Testing - Signal and Hardware Selection
Extracting information from conventional AE features for onset damage detection in carbon fiber composites

2004

NDT methods for evaluating carbon fiber composites

2003

Model selection in one-class v-SVMs using RBF kernels
Model selection in one class nu-SVMs using RBF kernels

Keywords for Specialisation:

Haptic and Tactile stimulation

Energy efficiency

Performance engineering

Acoustic engineering

3D Sounds and Acoustics

Renewable energy

Virtual Reality Acoustics

Sensory substitution

Battery Energy Storage System

Battery repurposing

Battery testing