Defense of thesis for Marco Sauermoser on February 19th: reserve the day! – PoreLab Skip to content About Research Research Theme 1: Thermodynamics of flow in porous media Research Theme 2: Deformable porous media Research Theme 3: Experimental characterization of immiscible two-phase flow in porous media Research Theme 4: Nanoporous media and gels Research Theme 5: Thermodynamic Driving Forces Research Theme 6: Microfluidics and field studies Research Theme 7: Applications Laboratory facilities People Principal Investigators Scientific Advisory Board and Steering Board Supporting staff Researchers, Postdoctoral fellows and PhD Candidates Associates Visitors Alumni Collaborative partners Publications PoreLab Annual Reports Catalogue MSc Journal Publications Books and part of Books Awards Events For students Openings Vacant positions Grants and fundings Contact About Research - Research Theme 1: Thermodynamics of flow in porous media - Research Theme 2: Deformable porous media - Research Theme 3: Experimental characterization of immiscible two-phase flow in porous media - Research Theme 4: Nanoporous media and gels - Research Theme 5: Thermodynamic Driving Forces - Research Theme 6: Microfluidics and field studies - Research Theme 7: Applications - Laboratory facilities People - Principal Investigators - Scientific Advisory Board and Steering Board - Supporting staff - Researchers, Postdoctoral fellows and PhD Candidates - Associates - Visitors - Alumni - Collaborative partners Publications - PoreLab Annual Reports - Catalogue MSc - Journal Publications - Books and part of Books Awards Events For students Openings - Vacant positions - Grants and fundings Contact Defense of thesis for Marco Sauermoser on February 19th: reserve the day! By PoreLab 11 February, 2021 Thesis Defence Defense of thesis 19 February: Marco Sauermoser – Faculty of Natural Sciences MARCO SAUERMOSER – THE DEPARTMENT OF CHEMISTRY Marco Sauermoser has submitted the following academic thesis as part of the doctoral work at the Norwegian University of Science and Technology (NTNU): “Non-equilibrium thermodynamics and nature-inspired chemical engineering applied to PEM fuel cells” Assessment Committee The Faculty of Natural Sciences has appointed the following Assessment Committee to assess the thesis: PhD Karen Swider-Lyons. Naval Research Laboratory Washington DC. USA Prof. Dr.-Ing. Stephan Kabelac. Leibniz University Hannover. Germany Ass. Prof. Øystein Ulleberg. Principal Scientist IFE. Norway Ass. Prof. Jan Torgersen. Department of Mechanical and Industrial. NTNU Ass. Prof. Jan Torgersen has been appointed Administrator of the Committee. The Committee recommends that the thesis is worthy of being publicly defended for the PhD degree. Supervisors The doctoral work has been carried out at the Department of Chemistry, where Professor Signe Kjelstrup at Department of Chemistry has been the candidate’s supervisor. Professor Bruno G. Pollet at Department of Energy and Process Engineering has been the candidate’s co-supervisor. Public trial lecture: Time: 19 February at 12:15 Place: https://NTNU.zoom.us/j/91502282722?pwd=RU16b2w2Mk04MnN3VG9NcGVUMHl6dz09 Passcode: 037813 Prescribed subject: Opportunities and challenges for fuel cell and battery systems in the electrification of Norway Public defence of the thesis: Time: 19 February at 14:15 Place: https://NTNU.zoom.us/j/91502282722?pwd=RU16b2w2Mk04MnN3VG9NcGVUMHl6dz09 Passcode: 037813 For a PDF copy of thesis, please contact lise.skorstad@ntnu.no Summary of thesis: The first objective of this thesis is to discover potentials for the optimisation of the performance of polymer electrolyte membrane (PEM) fuel cells by using new designs for the flow field plates (FFP) based on nature-inspired chemical engineering. The second objective is to give a detailed understanding of the processes and effects, mostly heat-related ones, inside a PEM fuel cell. Flow field designs were reviewed to obtain a better understanding of the demands of efficient flow patterns. Each type of pattern has advantages and disadvantages; therefore, multi-criteria optimisation methods were recommended to optimise flow field designs. The next step was to analyse nature-inspired flow field patterns. A tree-like structure approach was chosen due to its uniform flow distribution. These patterns, usually scaled with the so-called Murray’s Law, already showed promising results in PEM fuel cells compared to industry-standard serpentine patterns. Analytical calculations and 3D CFD simulations were used to calculate the entropy production of the tree-like structure. Results showed that Murray’s Law did not yield minimum entropy production and increasing the width scaling factor reduced the entropy production. Based upon the theoretical work on the tree-like patterns, a new two-layer FFP was developed and milled in high-quality graphite plates. Three different designs were tested in a 25 cm2 PEM fuel cell, and experimental results were compared to a standard 1-channel serpentine pattern. We showed that the best tree-like FFP design could achieve a peak power density which was within 11% (a 0.08 W/cm2 difference) of the serpentine pattern at 70% relative humidity. The electrochemical impedance spectroscopy and fuel cell experiments indicated that water accumulation, together with a slight increase in single PEM fuel cell resistance, were the main reasons for the reduced power density. Furthermore, we showed that decreasing the tree-like patterns’ width scaling factor improved the PEM fuel cell performance. For the second objective, a 1D PEM fuel cell model was developed to compute concentration, temperature, heat flux and electrical potential profiles inside the PEM fuel cell. A consistency check based upon the entropy balance was implemented to detect inconsistencies within the model. Further improvements were made by modifying an open-source code with our equations. The importance of coupling terms, such as Peltier or Dufour effects, which are commonly neglected, were investigated. We reported that they have significant contributions to various fluxes. Additionally, studies on varying the system boundaries’ temperatures indicated that the system was susceptible to temperature changes. While having a cooler cathode, heat fluxes were more uniform in the PEM fuel cell, and cell voltages increased between 1 mV and 3 mV. Porous Media Tea Time Talk PoreLab lecture on Robust Topological Characterization of Fluid Microstructure via Persistent Homology New release: Non-equilibrium Thermodynamics of Heterogeneous Systems New release: Nanothermodynamics – general theory Catalogue Master Students 2021 – Opportunities 2022 Annual Report 2021 PoreLab Lecture Series – Upcoming Lectures All PoreLab Lecture Series – CLICK HERE 23 AUGUST 2022:Dr. Hans Herrmann (PMMH, ESPCI Paris, France and UFC, Fortaleza, Brazil): Frustrated Bearings All PoreLab Lecture Series – CLICK HERE Upcoming events MAY 22-25, 2023: The 15th annual InterPore Meeting (Edinburgh, United Kingdom) Spring 2024: The 16th annual InterPore Meeting, Qingdao, China) Spring 2025: The 17th annual InterPore Meeting, Albuquerque, New Mexico, USA Twitter Tweets by PoreLab PoreLab and the InterPore Network PoreLab is an institutional member of InterPore. Find more about the National Workshops of the Norwegian Chapter of InterPore here. Find more about the InterPore-PoreLab award for Young Researchers here The Gallery of Porous Media Art The Gallery of Porous Media Art Marcel Moura, Postdoctoral Fellow - Porous Media Laboratory SFF Trondheim Petroleumsteknisk Senter S.P. Andersens vei 15 B 7031 Trondheim Norway Map Oslo Fysikkbygningen Sem Sælands vei 24 0371 Oslo Norway Map About Research People Honors & Awards Events For students Openings Contact Theme by Think Up Themes Ltd. Powered by WordPress.