Institutt for energi og prosessteknikk
Recent Submissions
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Cost savings and CO2 emissions reduction potential in the German district heating system with demand response
(Peer reviewed; Journal article, 2021)Demand response (DR) has been an effective technique to maximize the proportion of renewable energies integrated into energy supply systems. This paper investigated the benefits of DR on three building types (apartment ... -
Do President Trump's tweets affect financial markets?
(Peer reviewed; Journal article, 2021)Frequent tweets of the former president of the United States, Donald Trump, provide a unique opportunity to study how financial markets respond to his statements. To do this, we utilize a precise timestamp of each tweet ... -
Full-Spectrum High-Resolution Modeling of the Dielectric Function of Water
(Journal article, 2020)In view of the vital role of water, exact knowledge of its dielectric function over a large frequency range is important. We report on currently available measurements of the dielectric function of water at room temperature ... -
Life-cycle assessment to unravel co-benefits and trade-offs of large-scale biochar deployment in Norwegian agriculture
(Peer reviewed; Journal article, 2021)Limiting temperature rise below 2 °C requires large deployment of Negative Emission Technologies (NET) to capture and store atmospheric CO2. Compared to other types of NETs, biochar has emerged as a mature option to store ... -
Industrial High Temperature Heat Pump with natural Refrigerants - Performance evaluation and design improvement
(Master thesis, 2022)Abstract will be available on 2025-09-01 -
Process simulation based life cycle assessment of a subsea compression system: identifying the largest influences on environmental impact
(Master thesis, 2022)I dette studiet ble miljøpåvirkningen gjennom livssyklusen til det planlagte undervannskompresjonssystemet Jansz-Io utenfor kysten i Vest-Australia evaluert. Kompresjonssystemet vil operere på en vanndypde på omtrent 1350 ... -
Process simulation based life cycle assessment of a subsea compression system: identifying the largest influences on environmental impact
(Master thesis, 2022)I dette studiet ble miljøpåvirkningen gjennom livssyklusen til det planlagte undervannskompresjonssystemet Jansz-Io utenfor kysten i Vest-Australia evaluert. Kompresjonssystemet vil operere på en vanndypde på omtrent 1350 ... -
Understanding the Effects of Power Ultrasound on the Hydrogen Evolution Reaction (HER) and the Oxygen Evolution Reaction (OER) on Polycrystalline Pt and Ni in Alkaline and Acidic Solutions
(Doctoral theses at NTNU;2022:172, Doctoral thesis, 2022)The aim of this Ph.D. project was to investigate the effect of power ultrasound on the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) on polycrystalline nickel (Ni) and platinum (Pt) in alkaline ... -
The influence of Fischer–Tropsch-biodiesel–diesel blends on energy and exergy parameters in a six-cylinder turbocharged diesel engine
(Peer reviewed; Journal article, 2020)This investigation explores the influence of oxygenated fuels on different energy and exergy parameters first and the second law of thermodynamics. The parameters were estimated based on the experimental data using ... -
Life Cycle Assessment of Concrete from Bauxite Residue in China
(Master thesis, 2021)For tiden er miljøproblemet mye bekymret av samfunnet; og industrien har blitt avslørt som en stor bidragsyter av forskere. Selv om det er nyttig å lindre det med å "redusere" industriavfallet, vil det ikke være uendelig ... -
The Casimir effect for fermionic currents in conical rings with applications to graphene ribbons
(Peer reviewed; Journal article, 2020)We investigate the combined effects of boundaries and topology on the vacuum expectation values (VEVs) of the charge and current densities for a massive 2D fermionic field confined on a conical ring threaded by a magnetic ... -
Adaptive Moving Horizon Estimator for Return Flow Rate Estimation using Fluid Levels of a Venturi Channel
(Peer reviewed; Journal article, 2020)Real-time estimation of the return drilling fluid during oil well drilling is investigated in this study. Online fluid level measurements from a Venturi channel which can be placed on the return flowline is used with a ... -
Remarks on cosmological bulk viscosity in different epochs
(Peer reviewed; Journal article, 2020)The intention of this paper is mainly two-fold. First, we point out a striking numerical agreement between the bulk viscosity in the lepton era calculated by Husdal (2016) and our own calculations of the present-day bulk ... -
Non-Intrusive Data Monitoring and Analysis of Occupant Energy-Use Behaviors in Shared Office Spaces
(Peer reviewed; Journal article, 2020)A non-intrusive data collection framework is developed to analyze the desk-level occupancy and energy use patterns of occupants in shared office spaces. The framework addresses the limitations of previous studies in the ... -
Numerical Evaluation of Rotordynamic Coefficients for Compliant Foil Gas Seal
(Peer reviewed; Journal article, 2020)Compliant foil gas seal is one of the advanced cylindrical gas seal technologies and can be commonly used in the secondary flow system of an aero-engine. It can enhance the dynamic stability of the aero-engine by meeting ... -
Effects of car electronics penetration, integration and downsizing on their recycling potentials
(Peer reviewed; Journal article, 2020)Car electronics form an extensive yet untapped source for secondary critical raw materials. To seize their recycling potentials it is imperative to understand how the number and volumes of car electric and electronic (EE) ... -
Computational Fluid Dynamics Modeling of the Resistivity and Power Density in Reverse Electrodialysis: A Parametric Study
(Peer reviewed; Journal article, 2020)Electrodialysis (ED) and reverse electrodialysis (RED) are enabling technologies which can facilitate renewable energy generation, dynamic energy storage, and hydrogen production from low-grade waste heat. This paper ... -
In the wake of turbulence: A study on the effects of freestream turbulence on the flow around simple and complex geometries
(Doctoral theses at NTNU;2022:155, Doctoral thesis, 2022)With the growing demand of global energy consumption and a need to reduce pollution caused by energy production from fossil fuels, renewable sources of energy are becoming increasingly necessary for the future sustainable ... -
Effectiveness of protected areas edges on vegetation greenness, cover and productivity on the Tibetan Plateau, China
(Journal article; Peer reviewed, 2022)Protected areas (PAs) are the cornerstones of global vegetation conservation efforts, but growing evidence showed the limited effectiveness of PAs in some regions. Recent attempts to quantify conservation efficiency were ... -
Gradient-based design optimization and off-design performance prediction of Rankine cycles and Radial Inflow Turbines
(Doctoral theses at NTNU;2022:147, Doctoral thesis, 2022)A major fraction of today's electricity is generated by Rankine cycle power systems utilizing the thermal energy of fossil sources such as coal and natural gas, or nuclear energy. However, the carbon content in the fossil ...
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