Institutt for energi og prosessteknikk
Recent Submissions
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Phase Change and Wetting Dynamics in Submicron Liquid- Vapor Systems: A Phase Field Approach
(Doctoral theses at NTNU;2025:172, Doctoral thesis, 2025)Liquid–vapor phase transitions at submicron and nanoscale dimensions are governed by intricate interfacial phenomena that remain difficult to predict accurately through conventional models. Predicting the behavior of ... -
Equation-Oriented Meanline Performance Prediction and Design Optimization of Axial Turbines
(Doctoral theses at NTNU;2025:162, Doctoral thesis, 2025)Axial turbines are critical for energy systems, ranging from conventional power plants to advanced technologies like supercritical carbon dioxide Brayton cycle and organic Rankine cycle power systems. Their widespread use ... -
Energy flexibility in buildings through thermal storage devices: Modelling and optimal control
(Doctoral theses at NTNU;2025:182, Doctoral thesis, 2025)Energy consumption worldwide has increased dramatically in recent times, driven by the unrelenting nature of development in modern societies. A large share of the energy consumption is dominated by fossil–fuel based energy ... -
Demand side flexibility for a Heat Booster Substation with ultra low temperature district heating
(Journal article; Peer reviewed, 2023)Ultra-low temperature district heating (ULTDH) systems improve the heat distribution efficiency by reducing thermal network losses and provide an easier access to Renewable Energy Sources (RES) by utilizing them as heat ... -
Parametric analysis and experimental validation of ammonia water absorption compression heat pump
(Master thesis, 2025)Energibransjen står overfor to store utfordringer: en globalt økende etterspørsel og miljøkonsekvenser knyttet til energiproduksjon og -bruk. Industrisektoren står for 25 % av det endelige energiforbruket i Europa, hvorav ... -
Weighing Risks against GHG Reduction Benefits in Emerging Green Technologies
(Journal article; Peer reviewed, 2025)Green technologies represent promising strategies for mitigating carbon emissions and combating global warming. However, their implementation in civil and industrial applications is not without risks, as intrinsic uncertainties ... -
Assessing the Impact of Wood Stoves on the Aggregated Electricity Hourly Load Profile of Norwegian Detached Houses
(Journal article; Peer reviewed, 2025)Wood stoves are commonly used for the space heating of residential buildings, especially in Norway. While their influence on building energy consumption has been extensively studied, the contribution of wood stoves to ... -
Evaluation of Atlantic cod hydrolysate properties in innovative freeze concentration techniques
(Journal article; Peer reviewed, 2025)This study investigates Atlantic cod's (Gadus morhua) physicochemical and rheological properties throughout various stages of the hydrolysis process to assess the feasibility of integrating a high-temperature heat pump ... -
Vortex imprints on a free surface as proxy for surface divergence
(Journal article; Peer reviewed, 2023)In turbulence near a free surface, strong vortices attach to the surface, creating surface imprints visible as nearly circular ‘dimples’. By studying these imprints in direct numerical simulation (DNS) data we make two ... -
Experimental Investigation of Deposition of Silica Nanocolloids by Depressurizing Supercritical Water Vapor
(Journal article; Peer reviewed, 2025)This article presents the results of an experimental investigation of silica deposition from depressurized supercritical steam. The case investigated is relevant for supercritical geothermal reservoirs with high temperature ... -
Thermal design of quadratic segmental precast concrete driven energy piles
(Journal article; Peer reviewed, 2025)This paper introduces a novel thermal design methodology for segmental quadratic precast concrete energy piles. While thermal analysis methods for energy piles have been extensively studied, no previous research has ... -
Modeling of a heat pump drying simulator for clipfish
(Master thesis, 2025)Den norske eksportverdien til klippfisk er på stigende kurve og produksjonen av klippfisk må være så effektiv som mulig. Tørkingen er den mest tid- og energikrevende delen av klippfiskproduksjon. Med en tørkesimulator er ... -
Lean blow-off behaviour of premixed bluff-body stabilised ammonia/hydrogen/nitrogen flames
(Doctoral theses at NTNU;2025:141, Doctoral thesis, 2025)Ultilising carbon-free fuels is a promising way to reduce carbon dioxide emissions to achieve carbon-zero goals in the near future, especially for land-based gas turbines. In this thesis, ammonia/hydrogen/nitrogen fuel ... -
Accounting for exact vegetation index recording date to enhance evaluation of time-lagged and accumulated climatic effects on global vegetation greenness
(Journal article; Peer reviewed, 2025)Considering time-lag and accumulation effects of climate is crucial for accurately evaluating vegetation dynamics under global climate change. Most studies investigate these mechanisms by examining the explanatory power ... -
Anbefalt metode for beregning av utslipp fra strøm og fjernvarme. Oppsummering og anbefaling på tvers av studier i FME ZEN
(ZEN Memo;, Research report, 2025)FME ZEN har som en sentral del av sitt mandat hatt i oppgave å utvikle kunnskap om hvordan man kan oppnå netto nullutslippsområder (ZEN), med tanke på klimagassutslipp fra utbyggingsprosjekter i våre byer og tettsteder. ... -
Dispersion interaction between thin conducting cylinders
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A new framework for evaluating and enhancing the performance of district heating systems integrated with data centres using short-term thermal energy storage
(Journal article; Peer reviewed, 2025)This paper proposes a new framework to assess and enhance the performance of district heating (DH) systems integrated with data centres (DCs). This framework utilizes six key performance indicators tailored specifically ... -
Characterising slug flow in a horizontal pipe using bubble image velocimetry
(Journal article; Peer reviewed, 2025)In this paper, we investigate air–water slug flow in a horizontal pipe using bubble image velocimetry (BIV). We show that a good estimate of the ensemble-averaged velocity field can be obtained by tracking the bubbles using ... -
Putting the costs and benefits of carbon capture and storage into perspective: a multi-sector to multi-product analysis
(Journal article; Peer reviewed, 2024)Carbon dioxide capture, transport, and storage (CCS) is essential in achieving the net-zero target. Despite this increasing recognition, current CCS deployments are far behind targeted ambitions. A key reason is that CCS ... -
Design of a small-scale R717 plate heat exchangers test facility
(Master thesis, 2024)Denne avhandlingen presenterer design og implementering av et småskala testanlegg beregnet på å evaluere ytelsen til ammoniakk (R717) platevarmevekslere som fordampere og kondensatorer. Gitt den økende en miljøproblemer ...
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