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Dr. Mitja Mori
Department for Energy Engineering, University of Ljubljana, Faculty of Mechanical Engineering, Ljubljana 1000, Slovenia

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0 Eco-design
0 Life Cycle Assessment
0 circular economy
0 Hydrogen economy
0 life cycle sustainable assessment

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Life Cycle Assessment
critical materials
circular economy
Hydrogen economy

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Short Biography

Mitja Mori is one of a lead experts in life cycle assessment methodology in Slovenia working with industry, in the scope of international projects and with government. He has more than 80 publications in LCA in different areas, sectors, and research and expert projects. Results of his research is reflected in papers published in scientific and professional journals (30 papers), international conferences (48 papers). In addition to teaching (authorship and co-authorship of 46 publications, 35 mentorships in masters and bachelors) he is also involved in the professional activities of the Laboratory of thermal energy (56 reports and studies). He was a technical coordinator of various national research projects dealing with LCA and hydrogen economy and participated as LCA expert or as a partner in EU research projects (FP7 – Hyacinth, FP7-FluMaBack, H2020 - HyTechCycling, LIFE - SustainHuts). From 1. January 2021 he is a leading work-packages for LCA in two H2020 funded projects: Best4Hy (SustainaBlE SoluTions FOR recycling of end of life Hydrogen technologies) and eGhost (Establishing Eco-design Guidelines for Hydrogen Systems and Technologies).

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Journal article
Published: 23 March 2021 in Sustainability
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The purpose of this paper is to obtain relevant data on materials that are the most commonly used in fuel-cell and hydrogen technologies. The focus is on polymer-electrolyte-membrane fuel cells, solid-oxide fuel cells, polymer-electrolyte-membrane water electrolysers and alkaline water electrolysers. An innovative, methodological approach was developed for a preliminary material assessment of the four technologies. This methodological approach leads to a more rapid identification of the most influential or critical materials that substantially increase the environmental impact of fuel-cell and hydrogen technologies. The approach also assisted in amassing the life-cycle inventories—the emphasis here is on the solid-oxide fuel-cell technology because it is still in its early development stage and thus has a deficient materials’ database—that were used in a life-cycle assessment for an in-depth material-criticality analysis. All the listed materials—that either are or could potentially be used in these technologies—were analysed to give important information for the fuel-cell and hydrogen industries, the recycling industry, the hydrogen economy, as well as policymakers. The main conclusion from the life-cycle assessment is that the polymer-electrolyte-membrane water electrolysers have the highest environmental impacts; lower impacts are seen in polymer-electrolyte-membrane fuel cells and solid-oxide fuel cells, while the lowest impacts are observed in alkaline water electrolysers. The results of the material assessment are presented together for all the considered materials, but also separately for each observed technology.

ACS Style

Mitja Mori; Rok Stropnik; Mihael Sekavčnik; Andrej Lotrič. Criticality and Life-Cycle Assessment of Materials Used in Fuel-Cell and Hydrogen Technologies. Sustainability 2021, 13, 3565 .

AMA Style

Mitja Mori, Rok Stropnik, Mihael Sekavčnik, Andrej Lotrič. Criticality and Life-Cycle Assessment of Materials Used in Fuel-Cell and Hydrogen Technologies. Sustainability. 2021; 13 (6):3565.

Chicago/Turabian Style

Mitja Mori; Rok Stropnik; Mihael Sekavčnik; Andrej Lotrič. 2021. "Criticality and Life-Cycle Assessment of Materials Used in Fuel-Cell and Hydrogen Technologies." Sustainability 13, no. 6: 3565.

Journal article
Published: 09 December 2020 in International Journal of Hydrogen Energy
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Mountain huts, as special, stand-alone, micro-grid systems, are not connected to a power grid and represent a burden on the environment. The micro-grid has to be flexible to cover daily and seasonal fluctuations. Heat and electricity are usually generated with fossil fuels due to the simple on-off operation. By introducing renewable energy sources (RESs), the generation of energy could be more sustainable, but the generation and consumption must be balanced. The paper describes the integration of a hydrogen-storage system (HSS) and a battery-storage system (BattS) in a mountain hut. The HSS involves a proton-exchange-membrane water electrolyser (PEMWE), a hydrogen storage tank (H2 tank), a PEM fuel cell (PEMFC) and a BattS consisting of lead-acid batteries. Eight micro-grid configurations were modelled using HOMER and evaluated from the technical, environmental and economic points of view. A life-cycle assessment analysis was made from the cradle to the gate. The micro-grid configurations with the HSS achieve, on average, a more than 70% decrease in the environmental impacts in comparison to the state of play at the beginning, but require a larger investment. Comparing the HSS with the BattS as a seasonal energy storage, the hydrogen-based technology had advantages for all of the assessed criteria.

ACS Style

Mitja Mori; Manuel Gutiérrez; Pedro Casero. Micro-grid design and life-cycle assessment of a mountain hut's stand-alone energy system with hydrogen used for seasonal storage. International Journal of Hydrogen Energy 2020, 1 .

AMA Style

Mitja Mori, Manuel Gutiérrez, Pedro Casero. Micro-grid design and life-cycle assessment of a mountain hut's stand-alone energy system with hydrogen used for seasonal storage. International Journal of Hydrogen Energy. 2020; ():1.

Chicago/Turabian Style

Mitja Mori; Manuel Gutiérrez; Pedro Casero. 2020. "Micro-grid design and life-cycle assessment of a mountain hut's stand-alone energy system with hydrogen used for seasonal storage." International Journal of Hydrogen Energy , no. : 1.

Journal article
Published: 07 August 2020 in International Journal of Hydrogen Energy
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We present the results of a life-cycle assessment (LCA) for the manufacturing and end-of-life (EoL) phases of the following fuel-cell and hydrogen (FCH) technologies: alkaline water electrolyser (AWE), polymer-electrolyte-membrane water electrolyser (PEMWE), high-temperature (HT) and low-temperature (LT) polymer-electrolyte-membrane fuel cells (PEMFCs), together with the balance-of-plant components. New life-cycle inventories (LCIs), i.e., material inputs for the AWE, PEMWE and HT PEMFC are developed, whereas the existing LCI for the LT PEMFC is adopted from a previous EU-funded project. The LCA models for all four FCH technologies are created by modelling the manufacturing phase, followed by defining the EoL strategies and processes used and finally by assessing the effects of the EoL approach using environmental indicators. The effects are analysed with a stepwise approach, where the CML2001 assessment method is used to evaluate the environmental impacts. The results show that the environmental impacts of the manufacturing phase can be substantially reduced by using the proposed EoL strategies (i.e., recycled materials being used in the manufacturing phase and replacing some of the virgin materials). To point out the importance of critical materials (in this case, the platinum-group metals or PGMs) and their recycling strategies, further analyses were made. By comparing the EoL phase with and without the recycling of PGMs, an increase in the environmental impacts is observed, which is much greater in the case of both fuel-cell systems, because they contain a larger quantity of PGMs.

ACS Style

Andrej Lotrič; Mihael Sekavčnik; Igor Kuštrin; Mitja Mori. Life-cycle assessment of hydrogen technologies with the focus on EU critical raw materials and end-of-life strategies. International Journal of Hydrogen Energy 2020, 46, 10143 -10160.

AMA Style

Andrej Lotrič, Mihael Sekavčnik, Igor Kuštrin, Mitja Mori. Life-cycle assessment of hydrogen technologies with the focus on EU critical raw materials and end-of-life strategies. International Journal of Hydrogen Energy. 2020; 46 (16):10143-10160.

Chicago/Turabian Style

Andrej Lotrič; Mihael Sekavčnik; Igor Kuštrin; Mitja Mori. 2020. "Life-cycle assessment of hydrogen technologies with the focus on EU critical raw materials and end-of-life strategies." International Journal of Hydrogen Energy 46, no. 16: 10143-10160.

Research article
Published: 04 September 2019 in Energy Science & Engineering
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Commonly used materials constituting the core components of polymer electrolyte membrane fuel cells (PEMFCs), including the balance‐of‐plant, were classified according to the EU criticality methodology with an additional assessment of hazardousness and price. A life‐cycle assessment (LCA) of the materials potentially present in PEMFC systems was performed for 1 g of each material. To demonstrate the importance of appropriate actions at the end of life (EoL) for critical materials, a LCA study of the whole life cycle for a 1‐kW PEMFC system and 20,000 operating hours was performed. In addition to the manufacturing phase, four different scenarios of hydrogen production were analyzed. In the EoL phase, recycling was used as a primary strategy, with energy extraction and landfill as the second and third. The environmental impacts for 1 g of material show that platinum group metals and precious metals have by far the largest environmental impact; therefore, it is necessary to pay special attention to these materials in the EoL phase. The LCA results for the 1‐kW PEMFC system show that in the manufacturing phase the major environmental impacts come from the fuel cell stack, where the majority of the critical materials are used. Analysis shows that only 0.75 g of platinum in the manufacturing phase contributes, on average, 60% of the total environmental impacts of the manufacturing phase. In the operating phase, environmentally sounder scenarios are the hydrogen production with water electrolysis using hydroelectricity and natural gas reforming. These two scenarios have lower absolute values for the environmental impact indicators, on average, compared with the manufacturing phase of the 1‐kW PEMFC system. With proper recycling strategies in the EoL phase for each material, and by paying a lot of attention to the critical materials, the environmental impacts could be reduced, on average, by 37.3% for the manufacturing phase and 23.7% for the entire life cycle of the 1‐kW PEMFC system.

ACS Style

Rok Stropnik; Andrej Lotrič; Alfonso Bernad Montenegro; Mihael Sekavčnik; Mitja Mori. Critical materials in PEMFC systems and a LCA analysis for the potential reduction of environmental impacts with EoL strategies. Energy Science & Engineering 2019, 7, 2519 -2539.

AMA Style

Rok Stropnik, Andrej Lotrič, Alfonso Bernad Montenegro, Mihael Sekavčnik, Mitja Mori. Critical materials in PEMFC systems and a LCA analysis for the potential reduction of environmental impacts with EoL strategies. Energy Science & Engineering. 2019; 7 (6):2519-2539.

Chicago/Turabian Style

Rok Stropnik; Andrej Lotrič; Alfonso Bernad Montenegro; Mihael Sekavčnik; Mitja Mori. 2019. "Critical materials in PEMFC systems and a LCA analysis for the potential reduction of environmental impacts with EoL strategies." Energy Science & Engineering 7, no. 6: 2519-2539.

Journal article
Published: 02 October 2018 in Energy
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In this paper an environmental impacts of a 3 kW uninterruptible power supply system with polymer membrane fuel cell (FCH-UPS) was evaluated with a life cycle assessment (LCA) method. The analysis was focused on the analysis of the end of life (EOL) scenarios that will help to reduce environmental impacts during manufacturing stage. Numerical model of the FCH-UPS was developed using Gabi software. The scope of analysis was cradle-to-grave with functional unit 1 kWh of produced electric energy. In operating phase two geographical locations are compared where hydrogen is produced with electrolysis on-site. Three EOL scenarios were analysed: base, feasible and realistic scenario. With realistic EOL scenario in average a 72% reduction of all environmental impacts in the manufacturing phase was achieved. EOL phase of 3kW FCH-UPS represents low environmental impact compared with other phases in the entire life cycle of observed system. CO2 emissions of 3 kW FCH-UPS system was 239 g CO2 per 1 kWh of produced electricity if operating in Norway and 4040 g CO2 per 1 kWh in Morocco due to electricity grid mix. Results show that with circular economy, recycling and reuse of the materials in EOL phase, an average reduction of 66 % in all environmental impact indicators could be achieved in entire life cycle of a 3kW FCH-UPS system operated in Norway.

ACS Style

R. Stropnik; M. Sekavčnik; A.M. Ferriz; M. Mori. Reducing environmental impacts of the ups system based on PEM fuel cell with circular economy. Energy 2018, 165, 824 -835.

AMA Style

R. Stropnik, M. Sekavčnik, A.M. Ferriz, M. Mori. Reducing environmental impacts of the ups system based on PEM fuel cell with circular economy. Energy. 2018; 165 ():824-835.

Chicago/Turabian Style

R. Stropnik; M. Sekavčnik; A.M. Ferriz; M. Mori. 2018. "Reducing environmental impacts of the ups system based on PEM fuel cell with circular economy." Energy 165, no. : 824-835.

Conference paper
Published: 06 July 2017 in Hydrogen and Fuel Cells
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ACS Style

Boštjan Drobnič; Rok Stropnik; Boštjan Jurjevčič; Mitja Mori. Feasibility Study of Integrating Renewables and Hydrogen Technologies Into Isolated Power Supply System of Mountain Hut. Hydrogen and Fuel Cells 2017, 69 -80.

AMA Style

Boštjan Drobnič, Rok Stropnik, Boštjan Jurjevčič, Mitja Mori. Feasibility Study of Integrating Renewables and Hydrogen Technologies Into Isolated Power Supply System of Mountain Hut. Hydrogen and Fuel Cells. 2017; ():69-80.

Chicago/Turabian Style

Boštjan Drobnič; Rok Stropnik; Boštjan Jurjevčič; Mitja Mori. 2017. "Feasibility Study of Integrating Renewables and Hydrogen Technologies Into Isolated Power Supply System of Mountain Hut." Hydrogen and Fuel Cells , no. : 69-80.

Original articles
Published: 12 February 2015 in Numerical Heat Transfer, Part A: Applications
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This paper presents a study of heat transfer in a rotating axial rotor. The study was done on the basis of computational fluid dynamics simulations and validated with an infrared thermocamera experimental setup. The influence of full turbulence vs. Menter's boundary layer method was studied in terms of heat transfer and flow phenomena. Additionally it was found out that a thin paint layer has a major influence on heat transfer phenomena and acts as insulation. For comparison of numerical results with experimental, a model of the actual rotor was established. Results were found to be in good agreement, so the effect of rotation on heat transfer was studied. Results are presented in terms of Nusselt number distribution and an empirical model of heat transfer.

ACS Style

Mitja Mori; Boštjan Drobnič; Boštjan Jurjevčič; Lovrenc Novak. Numerical Modeling of Heat Transfer and Flow Phenomena in an Axial Rotating Rotor Cascade. Numerical Heat Transfer, Part A: Applications 2015, 67, 1053 -1074.

AMA Style

Mitja Mori, Boštjan Drobnič, Boštjan Jurjevčič, Lovrenc Novak. Numerical Modeling of Heat Transfer and Flow Phenomena in an Axial Rotating Rotor Cascade. Numerical Heat Transfer, Part A: Applications. 2015; 67 (10):1053-1074.

Chicago/Turabian Style

Mitja Mori; Boštjan Drobnič; Boštjan Jurjevčič; Lovrenc Novak. 2015. "Numerical Modeling of Heat Transfer and Flow Phenomena in an Axial Rotating Rotor Cascade." Numerical Heat Transfer, Part A: Applications 67, no. 10: 1053-1074.

Journal article
Published: 01 December 2013 in International Journal of Electrical Power & Energy Systems
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ACS Style

Boštjan Drobnič; Andrej Pirc; Mitja Mori; Mihael Sekavčnik. A novel approach to the regulation of a self-sufficient energy system using a system-state matrix. International Journal of Electrical Power & Energy Systems 2013, 53, 893 -899.

AMA Style

Boštjan Drobnič, Andrej Pirc, Mitja Mori, Mihael Sekavčnik. A novel approach to the regulation of a self-sufficient energy system using a system-state matrix. International Journal of Electrical Power & Energy Systems. 2013; 53 ():893-899.

Chicago/Turabian Style

Boštjan Drobnič; Andrej Pirc; Mitja Mori; Mihael Sekavčnik. 2013. "A novel approach to the regulation of a self-sufficient energy system using a system-state matrix." International Journal of Electrical Power & Energy Systems 53, no. : 893-899.

Journal article
Published: 15 October 2013 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Mitja Mori; Tilen Mržljak; Boštjan Drobnič; Mihael Sekavčnik. Integral Characteristics of Hydrogen Production in Alkaline Electrolysers. Strojniški vestnik – Journal of Mechanical Engineering 2013, 10, 585 -594.

AMA Style

Mitja Mori, Tilen Mržljak, Boštjan Drobnič, Mihael Sekavčnik. Integral Characteristics of Hydrogen Production in Alkaline Electrolysers. Strojniški vestnik – Journal of Mechanical Engineering. 2013; 10 (59):585-594.

Chicago/Turabian Style

Mitja Mori; Tilen Mržljak; Boštjan Drobnič; Mihael Sekavčnik. 2013. "Integral Characteristics of Hydrogen Production in Alkaline Electrolysers." Strojniški vestnik – Journal of Mechanical Engineering 10, no. 59: 585-594.

Journal article
Published: 15 March 2013 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Gašper Gantar; Andrej Glojek; Mitja Mori; Blaž Nardin; Mihael Sekavčnik. Resource Efficient Injection Moulding with Low Environmental Impacts. Strojniški vestnik – Journal of Mechanical Engineering 2013, 59, 193 -200.

AMA Style

Gašper Gantar, Andrej Glojek, Mitja Mori, Blaž Nardin, Mihael Sekavčnik. Resource Efficient Injection Moulding with Low Environmental Impacts. Strojniški vestnik – Journal of Mechanical Engineering. 2013; 59 (3):193-200.

Chicago/Turabian Style

Gašper Gantar; Andrej Glojek; Mitja Mori; Blaž Nardin; Mihael Sekavčnik. 2013. "Resource Efficient Injection Moulding with Low Environmental Impacts." Strojniški vestnik – Journal of Mechanical Engineering 59, no. 3: 193-200.

Journal article
Published: 15 May 2012 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Andrej Pirc; Mihael Sekavčnik; Mitja Mori. Universal Model of a Biomass Gasifier for Different Syngas Compositions. Strojniški vestnik – Journal of Mechanical Engineering 2012, 58, 291 -299.

AMA Style

Andrej Pirc, Mihael Sekavčnik, Mitja Mori. Universal Model of a Biomass Gasifier for Different Syngas Compositions. Strojniški vestnik – Journal of Mechanical Engineering. 2012; 58 (5):291-299.

Chicago/Turabian Style

Andrej Pirc; Mihael Sekavčnik; Mitja Mori. 2012. "Universal Model of a Biomass Gasifier for Different Syngas Compositions." Strojniški vestnik – Journal of Mechanical Engineering 58, no. 5: 291-299.

Journal article
Published: 01 February 2010 in Journal of Fluids Engineering
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In this paper, we present an experimental and numerical investigation of a single-stage centripetal pump (SSCP). This SSCP is designed to operate in the pump regime, while forcing the working media through impeller-stator flow channels in the radial inward direction. The measured performance curves are characterized by a hysteresis, since the throttle-closing performance curves do not correspond to the throttle-opening performance curves throughout the whole operating range. A computational fluid dynamics (CFD) model was developed to establish these throttle-closing and throttle-opening performance curves. The flow conditions obtained with the CFD simulations confirm that the hydraulic behavior of the SSCP is influenced by the partial circumferential stall that occurs in the impeller-stator flow channels. It was shown that the inflow conditions to the impeller-stator assembly considerably influence the flow rate of the stall cessation, the size of the hysteresis, and the head generated during part-load operations.

ACS Style

Mihael Sekavčnik; Tine Gantar; Mitja Mori. A Single-Stage Centripetal Pump—Design Features and an Investigation of the Operating Characteristics. Journal of Fluids Engineering 2010, 132, 021106 .

AMA Style

Mihael Sekavčnik, Tine Gantar, Mitja Mori. A Single-Stage Centripetal Pump—Design Features and an Investigation of the Operating Characteristics. Journal of Fluids Engineering. 2010; 132 (2):021106.

Chicago/Turabian Style

Mihael Sekavčnik; Tine Gantar; Mitja Mori. 2010. "A Single-Stage Centripetal Pump—Design Features and an Investigation of the Operating Characteristics." Journal of Fluids Engineering 132, no. 2: 021106.

Journal article
Published: 27 November 2007 in Forschung im Ingenieurwesen
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This paper presents an experimental and CFD numerical study of convective heat transfer and flow field characteristics in a rotating environment. Surface temperature distribution on a rotating blade was measured by means of infrared thermography. The experimental facility, IR thermography method, and the CFD numerical model that was made according to the actual test rig geometry and operating conditions, are described in detail. For the present study, tests were carried out at relatively low fluid temperatures in several operating points, defined by rotational, Reynolds and hot-to-cool air mass flow ratio. Experimental and numerical results for the observed blade side are compared in terms of surface temperature distribution (2D) and 1D charts along the blade midspan. Temperature distributions are statistically evaluated and show very good agreement. Dieser Artikel behandelt experimentelle und CFD numerische Untersuchungen der konvektiven Wärmeübergang und Eigenschaften der Strömung in einer rotierenden Ambient. Die Temperaturverteilung auf der rotierenden Schaufeloberfläche wurde mittels der Infrarotmesstechnik gemessen. Aufbau der Testanlage, IR-thermographische Methode und numerisches Modell sind detailliert beschrieben. In vorliegender Studie wurden Tests unter relativ niedrigen Temperaturen bei verschiedenen Rotations-, Reynolds’schen Zahlen und Massenstromverhältnissen durchgeführt. Experimentelle und numerische Ergebnisse für die beobachtete Schaufelfläche wurden als 2D Verteilungen und im Diagramm für Temperaturverlauf im Schaufelmittelhöhe dargestellt. Der Vergleich der experimentellen und numerischen Ergebnissen zeigt gute Übereinstimmung, was auch durch eine statistische Bewertung bestätigt wurde.

ACS Style

M. Mori; L. Novak; M. Sekavčnik; I. Kuštrin. Application of IR thermography as a measuring method to study heat transfer on rotating surface. Forschung im Ingenieurwesen 2007, 72, 1 -10.

AMA Style

M. Mori, L. Novak, M. Sekavčnik, I. Kuštrin. Application of IR thermography as a measuring method to study heat transfer on rotating surface. Forschung im Ingenieurwesen. 2007; 72 (1):1-10.

Chicago/Turabian Style

M. Mori; L. Novak; M. Sekavčnik; I. Kuštrin. 2007. "Application of IR thermography as a measuring method to study heat transfer on rotating surface." Forschung im Ingenieurwesen 72, no. 1: 1-10.