Institutt for energi og prosessteknikk
Recent Submissions
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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 ... -
Little Rip and Pseudo Rip Cosmological Models with Coupled Dark Energy Based on a New Generalized Entropy
(Journal article; Peer reviewed, 2024)In this paper, we study Little Rip (LR) and Pseudo Rip (PR) cosmological models containing two coupled fluids: dark energy and dark matter. We assume a spatially flat Friedmann–Robertson–Walker (FRW) universe. The interaction ... -
Axion Electrodynamics and the Casimir Effect
(Journal article; Peer reviewed, 2024)We present a concise review of selected parts of axion electrodynamics and their application to Casimir physics. We present the general formalism including the boundary conditions at a dielectric surface, derive the ... -
Rips and regular future scenario with holographic dark energy: a comprehensive look
(Journal article; Peer reviewed, 2024)Interest on the possible future scenarios the universe could have has grew substantially with breakthroughs on late-time acceleration. Holographic dark energy (HDE) presents a very interesting approach towards addressing ... -
Performance analysis of an active on-board refrigeration system using propane for improved fish preservation in small fishing boats
(Chapter, 2024)With a seafood production of 16.25 million metric tonnes in fiscal year 2022-23, India secures third rank globally in seafood production. To ensure the nation's food security and improve export earnings, it is critical to ... -
Modelling of an onboard R290 refrigerated sea water (RSW) system for ice production on small fishing vessels in India
(Chapter, 2024)India is one of the world's leading fish exporting nations. The fishing sector is expected to grow and already has a large economic and social impact. It is currently dominated by small fishing boats, which use ice to cool ... -
Performance testing of CO2-NH3 cascade freezer for seafood processing
(Chapter, 2024)Most of India’s seafood sector relies on ammonia refrigerant for fish processing. However, due to safety concerns these natural refrigerants are being replaced by synthetic refrigerants in some regions. Carbon dioxide is ... -
Comparison of time-invariant and adaptive linear grey-box models for model predictive control of residential buildings
(Journal article; Peer reviewed, 2024)Model predictive control (MPC) is a promising optimal control technique for activating building energy flexibility using its thermal mass. The performance of the MPC controller is directly related to the accuracy of the ... -
Emission location affects impacts on atmosphere and climate from alternative fuels for Norwegian domestic aviation
(Journal article; Peer reviewed, 2024)Aviation emissions contribute to climate change and local air pollution, with important contributions from non-CO2 emissions. These exhibit diverse impacts on atmospheric chemistry and radiative forcing (RF), varying with ... -
Integrating Cold Thermal Energy Storage for Air Conditioning Demand in a CO2 Refrigeration System at a Supermarket
(Peer reviewed; Journal article, 2024) -
Current scientific progress in solar-assisted vapor compression heat pump technology: Advanced design and configuration, refrigerant, performance, economic and environmental assessments
(Journal article; Peer reviewed, 2024)Solar energy is considered a clean and promising source of energy. The vapor compression heat pump technology is identified as the most suitable and efficient method to fulfill both cooling and heating needs. Researchers ... -
Physical properties of microplastics affecting the aquatic biota: A review
(Journal article; Peer reviewed, 2024)The physical properties of microplastics, such as size, type, polymer and chemical composition, affect their level of toxicity once ingested by aquatic species. Therefore, to be able to produce environmental relevant ... -
Analysis of activity structure in Szabolcs-Szatmár-Bereg County
(Journal article; Peer reviewed, 2024)Agriculture has become multifunctional, its task is no longer only the production of healthy food, but it has also expanded with the functions of regional development, landscape management, environmental protection and ... -
UAV Icing: Aerodynamic Degradation Caused by Intercycle and Runback Ice Shapes on an RG-15 Airfoil
(Peer reviewed; Journal article, 2024)Electrothermal de-icing systems are a popular approach to protect unmanned aerial vehicles (UAVs) from the performance degradation caused by in-cloud icing. However, their power and energy requirements must be minimized ... -
Tracking solid electrolyte interphase dynamics using operando fibre-optic infra-red spectroscopy and multivariate curve regression.
(Journal article; Peer reviewed, 2025) -
The instantaneous structure of a turbulent wall-bounded flow influenced by freestream turbulence: streamwise evolution
(Journal article; Peer reviewed, 2025)The instantaneous structure of a turbulent boundary layer (TBL) subjected to freestream turbulence (FST) is investigated at several streamwise locations downstream of an active turbulence-generating grid. Using planar ... -
Transfer learning in building dynamics prediction☆
(Journal article; Peer reviewed, 2025)Buildings account for approximately 40% of global energy use, largely due to heating, ventilation, and air conditioning (HVAC) systems. Advanced control strategies, such as model predictive control (MPC), are crucial for ...
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