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Rúnar Unnþórsson - Professor

Rúnar Unnþórsson

–

School of Engineering and Natural Sciences

Rúnar Unnþórsson

Professor

Head of faculty

Location
VR-2
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

Show Published works

2025

Review of Thermal Management Techniques for Prismatic Li-Ion BatteriesEnergies

2024

A Study of Parallel and Competitive Reaction Schemes in Kinetic Modeling of Plastic PyrolysisACS Omega
Kinetic Modeling Of Nutshells Pyrolytic ProductsAIP Conference Proceedings
Insect ProductionSustainability (Switzerland)
The effects of visual and auditory synchrony on human foragingAttention, Perception, and Psychophysics
Cross-Modal Cues Improve the Detection of Synchronized Targets during Human ForagingMultisensory research

2023

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

2022

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

2021

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

2020

The equivalence of stoichiometric and non-stoichiometric methods for modeling gasification and other reaction equilibriaRenewable and Sustainable Energy Reviews
Dataset of biomass characteristics and net output power from downdraft biomass gasifier integrated power production unitData in Brief
Artificial neural network integrated with thermodynamic equilibrium modeling of downdraft biomass gasification-power production plantEnergy
Performance analysis and environmental assessment of small-scale waste biomass gasification integrated CHP in IcelandEnergy
Techno‑Economic and Environmental Assessment of Power Supply Chain by Using Waste Biomass Gasification in IcelandBiophysical Economics and Sustainability
Energy harvesting technologies for structural health monitoring of airplane components—a reviewSensors (Switzerland)
Artificial neural network integrated with thermodynamic equilibrium modeling of downdraft biomass gasification-power production plantEnergy
3D ear shape as an estimator of hrtf notch frequency
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
The equivalence of stoichiometric and non-stoichiometric methods for modeling gasification and other reaction equilibriaRenewable and Sustainable Energy Reviews
Techno-Economic Analysis of Power Production by Using Waste Biomass GasificationJournal of Power and Energy Engineering (JPEE)
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)
Effect of coronavirus disease 2019 on co<inf>2</inf> emission in the worldAerosol and Air Quality Research

2019

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
A review of biomass gasification modellingRenewable and Sustainable Energy Reviews
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
Bass as an indicator of quality : Design of an In-Lab Experimentation Rack System for the ACUTE Multi-ChannelTactileSystem
Evaluation of Two Music Tactile Display Encodings for Cochlear Implant Recipients
Misure di HRTF su una testa KEMAR con padiglioni auricolari intercambiabili
Design of an In-Lab Experimentation Rack System for the ACUTE Multi-Channel Tactile System
Waste Biomass Gasification Simulation Using Aspen Plus: Performance Evaluation of Wood Chips, Sawdust and Mixed Paper WastesJournal of Power and Energy Engineering
Prioritization of Bioethanol Production Systems from Agricultural and Waste Agricultural Biomass Using Multi-criteria Decision MakingBiophysical Economics and Resource Quality
Thermoelectric Generator Using Passive Cooling
A detachable thermoelectric generator as a power source for a 3G camera network using a steam pipe as a heat source
Thermoelectric generator-based system for energizing low-power communication and geolocation electronics
Open field heated agriculture for enhanced crop production using waste geothermal steam, condensate, and hot water to produce marketable crops in Iceland
The intensity order illusionJournal of Neurophysiology

2018

Enhanced methane production from pig slurry with pulsed electric field pre-treatmentEnvironmental Technology (United Kingdom)
Measuring relative vibrotactile spatial acuity: effects of tactor type, anchor points and tactile anisotropyExperimental Brain Research
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
An Assessment of the Sustainability of Lignocellulosic Bioethanol Production from Wastes in IcelandEnergies
Thermoelectric Powered Security Systems in Iceland Using a Geothermal Steam Pipe as a Heat Source
Current Use and Future Perspectives of Spatial Audio Technologies in Electronic Travel AidsWireless Communications and Mobile Computing
Societal and environmental impact of high energy return on investment (EROI) energy access
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
On Authority in Academia
Uniaxial and lateral strain behavior of ribbed reinforcement bars inspected with digital image correlationStructural Concrete
Introducing a new haptic illusion to increase the perceived resolution of tactile displays
NordicSMC
On Improving Academic-Industry Collaboration
Enhanced methane production from pig slurry with pulsed electric field pre-treatmentEnvironmental Technology (United Kingdom)

2017

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

2016

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

2015

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
Levelized cost of energy analysis of awind power generation system at Búrfell in IcelandEnergies
Innovation and development in geothermal turbine maintenance based on Icelandic experienceGeothermics
Theorizing for maintenance management improvementsEnergies
Turbine repair at Nesjavellir geothermal power plantGeothermics
Energy return on investment of Austrian sugar beet: A small-scale comparison between organic and conventional productionBiomass and Bioenergy
Geothermal wellhead maintenanceGeothermics
Enhanced pig slurry biomethanation using pulsed electric field pre-treatment
A longitudinal study of the relations between workload, grades and student ratings in a first year engineering courseInternational Journal of Engineering Education
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
Accelerated plant growth results from an intensive shallow bottom heat system using waste geothermal hot water and steam condensate in Iceland
Er samhengi milli verkefnaálags og prófseinkunna í fyrsta árs verkfræðinámskeiði?Verktækni - Tímarit Verkfræðingafélags Íslands

2014

Wellhead scaling problems in geothermal power plants addressed using a needle valve derivative
Geothermal power plant maintenanceEnergies
Designing and installing a retrofit heated green roof using either co-gen waste hot water or municipal waste steam heat as energy source
Go with the flow
A web-accessible robotics monitoring system powered by a thermoelectric generator connected to a battery
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
Energy return on investment of hydroelectric power generation calculated using a standardised methodologyRenewable Energy

2013

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
Operation and maintenance in Icelandic geothermal power plants-structure and hierarchy
New design solves scaling problems on geothermal control valvesPower
A Thermoelectric-Based Point of Use Power Generator for Steam Pipes; Geo-Heat Center Quarterly BulletinGeo-Heat Center Quarterly Bulletin
Hit Detection and Determination in AE Bursts
Repurposing waste steam and hot water to accelerate plant growth in heated green roofs

2012

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

2011

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

2009

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

2008

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

2007

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

2005

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

2004

NDT methods for evaluating carbon fiber composites

2003

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