Blar i Institutt for kjemi på forfatter "Magnanelli, Elisa"
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Efficiency in the process industry: Three thermodynamic tools for better resource use
Kjelstrup, Signe; Magnanelli, Elisa (Peer reviewed; Journal article, 2020)In a world where resources are limited and their use will necessary have an impact, efficient handling of resources becomes essential. This review concerns three thermodynamic tools that can be systematically used to ... -
Energy efficiency of respiration in mature and newborn reindeer
Solberg, Simon Birger Byremo; Kjelstrup, Signe; Magnanelli, Elisa; Kizilova, Nataliya; Barroso, Iratxe Lorea Casado; Acquarone, Mario; Folkow, Lars (Peer reviewed; Journal article, 2020)Reindeer (Rangifer tarandus) have evolved elaborate nasal turbinate structures that are perfused via a complex vascular network. These are subject to thermoregulatory control, shifting between heat conservation and ... -
Energy efficient design of membrane processes by use of entropy production minimization
Magnanelli, Elisa; Wilhelmsen, Øivind; Johannessen, Eivind; Kjelstrup, Signe (Journal article; Peer reviewed, 2018)To minimize entropy production means to reduce the lost work in a process, and to optimize the use of energy resources. Due to the need for re-compression, membrane units for separation of CO2 from natural gas require large ... -
Energy-Efficient Designs of Systems: From Nature to Chemical Engineering
Solberg, Simon Birger Byremo (Master thesis, 2019)Dette masterprosjektet omfatter en undersøkelse av to forskjellige emner. Vi bruker teorien om irreversibel termodynamikk som et rammeverk for å betrakte effekten av geometri på energi-effektivitet av systemer i naturen. ... -
Entropy Production Minimization as Design Principle for Membrane Systems: Comparing Equipartition Results to Numerical Optima
Magnanelli, Elisa; Johannessen, Eivind; Kjelstrup, Signe (Journal article; Peer reviewed, 2017)Entropy production minimization procedures presented in literature show that under different assumptions the optimal solution might be characterized by different thermodynamic quantities being constant. These constant ... -
Exergy-based performance indicators for industrial practice
Magnanelli, Elisa; Berglihn, Olaf Trygve; Kjelstrup, Signe (Journal article, 2018)Key performance indicators (KPIs) are powerful tools that industries can use not only to monitor their activities but also to highlight their unexploited potential. Energy-based KPIs are nowadays mostly used to evaluate ... -
Nature-inspired geometrical design of a chemical reactor
Magnanelli, Elisa; Solberg, Simon Birger Byremo; Kjelstrup, Signe (Journal article; Peer reviewed, 2019)We explore the possibility to actively use the system geometry to search for states of minimum entropy production in a chemical reactor. This idea is inspired by the energy-efficient mass and energy transfer that takes ... -
Non-equilibrium thermodynamics as a tool to compute temperature at the catalyst surface
Cruz, Carolina; Barragán, Daniel; Magnanelli, Elisa; Lervik, Anders; Kjelstrup, Signe (Journal article; Peer reviewed, 2019)The surface temperature is computed for a heterogeneous catalytic reaction model, namely the oxidation of carbon monoxide on platinum. The surface temperature was found using non-equilibrium thermodynamic theory, a theory ... -
Performance analysis of heat and energy recovery ventilators using exergy analysis and nonequilibrium thermodynamics
Gjennestad, Magnus Aashammer; Aursand, Eskil; Magnanelli, Elisa; Pharoah, John George (Journal article; Peer reviewed, 2018)The increased attention to energy savings has contributed to more widespread use of energy recovery systems for building ventilation. We investigate the efficiency of such systems under different outdoor conditions using ... -
The Nasal Geometry of the Reindeer Gives Energy-Efficient Respiration
Magnanelli, Elisa; Wilhelmsen, Øivind; Acquarone, Mario; Folkow, Lars; Kjelstrup, Signe (Journal article; Peer reviewed, 2016)Reindeer in the arctic region live under very harsh conditions and may face temperatures below 233 K. Therefore, efficient conservation of body heat and water is important for their survival. Alongside their insulating ... -
Understanding and Reducing the Entropy Production in Membrane Systems From Gas Separation to Natural Systems
Magnanelli, Elisa (Doctoral theses at NTNU, 2017:97;, Doctoral thesis, 2017)The purpose of this thesis was to understand how energy is dissipated in various systems, in order to find general rules that can help increasing the energy efficiency of such systems.We mainly focused on membranes for ...