Blar i NTNU Open på forfatter "Kjelstrup, Signe Helene"
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A comparative study of experiments and theories on steady-state evaporation of water
Rauter, Michael Tobias; Aasen, Ailo; Kjelstrup, Signe Helene; Wilhelmsen, Øivind (Journal article, 2022)A precise description of energy and mass transport across the liquid-vapor interface of water is central in dis- ciplines spanning from climatology to seawater desalination. We present a critical assessment of six recent ... -
Defining the pressures of a fluid in a nanoporous, heterogeneous medium
Galteland, Olav; Rauter, Michael Tobias; Varughese, Kevin K.; Bedeaux, Dick; Kjelstrup, Signe Helene (Journal article, 2022)We describe the thermodynamic state of a single-phase fluid confined to a porous medium with Hill's thermodynamics of small systems, also known as nanothermodynamics. This way of defining small system thermodynamics, with ... -
“Fluid transport through nanoporous media in the presence of phase transitions
Rauter, Michael Tobias (Doctoral theses at NTNU;2022:268, Doctoral thesis, 2022)Clean potable water is among the most precious commodities in the world. Even though water is not sparse on the planet’s surface, it is not sufficiently accessible for about 4 billion people, who are experiencing serious ... -
Influence of electrode gas flow rate and electrolyte composition on thermoelectric power in molten carbonate thermocell
Kandhasamy, Sathiyaraj; Calandrino, Luca; Burheim, Odne Stokke; Solheim, Asbjørn; Kjelstrup, Signe Helene; Haarberg, Geir Martin (Journal article, 2016)A thermocell (thermo-electrochemical cell) is an electrochemical system with two identical electrodes placed at different temperatures in an electrolyte solution. Ion transport between the electrodes due to the temperature ... -
Single Electrode Entropy Change for LiCoO2 Electrodes
Richter, Frank; Gunnarshaug, Astrid Fagertun; Burheim, Odne Stokke; Vie, Preben Joakim Svela; Kjelstrup, Signe Helene (Journal article, 2017)Heat effects are known to be crucial for the performance of the Li-battery. In addition to the irreversible effects (e.g. Joule heat), reversible heat effects may play a role. These effects, i.e. the Soret and Seebeck ... -
Thermo-osmotic pressure and resistance to mass transport in a vapor-gap membrane
Rauter, Michael Tobias; Schnell, Sondre Kvalvåg; Hafskjold, Bjørn; Kjelstrup, Signe Helene (Peer reviewed; Journal article, 2021)We have investigated the transport of fluid through a vapor-gap membrane. The transport due to a membrane temperature difference was investigated under isobaric as well as non-isobaric conditions. Such a concept is relevant ... -
Thermoelectrochemical Cell with Molten Carbonate Electrolyte
Haarberg, Geir Martin; Kandhasamy, Sathiyaraj; Kjelstrup, Signe Helene; Solheim, Asbjørn (Journal article, 2017)Industrial processes for production of metals and alloys by metallurgical and electrochemical methods generate a lot of heat due to irreversible losses. The waste heat should be used to generate electricity. Commercial ... -
Transport coefficients for ion and solvent coupling. The case of the lithium-ion battery electrolyte
Kjelstrup, Signe Helene; Gunnarshaug, Astrid Fagertun; Gullbrekken, Øystein; Schnell, Sondre Kvalvåg; Lervik, Anders (Peer reviewed; Journal article, 2023)Transport properties are essential for the understanding and modeling of electrochemical cells, in particular complex systems like lithium-ion batteries. In this study, we demonstrate how a certain degree of freedom in the ...