Blar i Fakultet for ingeniørvitenskap (IV) på tidsskrift "Energies"
Viser treff 61-80 av 164
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Fast Well Control Optimization with Two-Stage Proxy Modeling
(Peer reviewed; Journal article, 2023)Waterflooding is one of the methods used for increased hydrocarbon production. Waterflooding optimization can be computationally prohibitive if the reservoir model or the optimization problem is complex. Hence, proxy ... -
A Generic Pipeline for Machine Learning Users in Energy and Buildings Domain
(Peer reviewed; Journal article, 2021)One of the biggest problems in applying machine learning (ML) in the energy and buildings field is the lack of experience of ML users in implementing each ML algorithm in real-life applications the right way, because each ... -
Heat Storage for Cooking: A Discussion on Requirements and Concepts
(Peer reviewed; Journal article, 2023)Methodologies for direct and indirect solar energy for cooking are discussed. Clean and renewable energy solutions for cooking are, in particular, in demand in the sub-Saharan region where fuel wood is the main source of ... -
Heat to H2: Using Waste Heat for Hydrogen Production through Reverse Electrodialysis
(Journal article; Peer reviewed, 2019)This work presents an integrated hydrogen production system using reverse electrodialysis (RED) and waste heat, termed Heat to H2. The driving potential in RED is a concentration difference over alternating anion and cation ... -
Heat to Hydrogen by Reverse Electrodialysis—Using a Non-Equilibrium Thermodynamics Model to Evaluate Hydrogen Production Concepts Utilising Waste Heat
(Peer reviewed; Journal article, 2022)The reverse electrodialysis heat engine (REDHE) is a promising salinity gradient energy technology, capable of producing hydrogen with an input of waste heat at temperatures below 100 °C. A salinity gradient drives water ... -
Hydropower Production in Future Climate Scenarios: The Case for Kwanza River, Angola
(Journal article; Peer reviewed, 2016)Climate change is altering hydrological processes with varying degrees in various regions of the world and remains a threat to water resources projects in southern Africa. The likely negative impacts of changes in Africa ... -
Hydropower Production in Future Climate Scenarios; the Case for the Zambezi River
(Journal article; Peer reviewed, 2016)Climate change remains a threat to water resources projects in southern Africa where impacts resulting from changes in climate are projected to be negative and worse than in most other regions of the world. This work ... -
Hysteresis characteristic in the hump region of a pump-turbine model
(Peer reviewed; Journal article, 2016)The hump feature is one of the major instabilities in pump-turbines. When pump-turbines operate in the hump region, strong noise and serious fluctuations can be observed, which are harmful to their safe and stable operation ... -
The Impact of Process Heat on the Decarbonisation Potential of Offshore Installations by Hybrid Energy Systems
(Peer reviewed; Journal article, 2021)An opportunity to decarbonise the offshore oil and gas sector lies in the integration of renewable energy sources with energy storage in a hybrid energy system (HES). Such concept enables maximising the exploitation of ... -
The implementation of multiple linear regression for swimming pool facilities: Case study at Jøa, Norway
(Peer reviewed; Journal article, 2021)This paper presents a statistical model for predicting the time-averaged total power consumption of an indoor swimming facility. The model can be a powerful tool for continuous supervision of the facility’s energy performance ... -
The Importance of Optical Fibres for Internal Temperature Sensing in Lithium-ion Batteries during Operation
(Journal article; Peer reviewed, 2021) -
In-Situ Generation of Nitrogen-Doped MoS2 Quantum Dots Using Laser Ablation in Cryogenic Medium for Hydrogen Evolution Reaction
(Peer reviewed; Journal article, 2022)Here, nitrogen doped molybdenum disulfide quantum dots (N-MoS2 QDs) are fabricated by making use of the pulsed laser ablation (PLA) process in liquid nitrogen (LN2) as a dopant agent. In fact, LN2 contributes the rapid ... -
Integration of Waste to Bioenergy Conversion Systems: A Critical Review
(Journal article; Peer reviewed, 2022)Sustainable biofuel production is the most effective way to mitigate greenhouse gas emissions associated with fossil fuels while preserving food security and land use. In addition to producing bioenergy, waste biorefineries ... -
Investigation and validation of a Francis turbine at runaway operating conditions
(Journal article; Peer reviewed, 2016)Hydraulic turbines exhibit total load rejection during operation because of high fluctuations in the grid parameters. The generator reaches no-load instantly. Consequently, the turbine runner accelerates to high speed, ... -
Investigation of Solar Photovoltaic-Thermal (PVT) and Solar Photovoltaic (PV) Performance: A Case Study in Ghana
(Peer reviewed; Journal article, 2020)The main objective of this paper is to experimentally assess the real-life outdoor performance of a photovoltaic-thermal (PVT) module against a conventional photovoltaic (PV) system in a hot humid tropical climate in Ghana. ... -
Investigation of Thermopressor with Incomplete Evaporation for Gas Turbine Intercooling Systems
(Peer reviewed; Journal article, 2023)One of the promising ways to increase fuel and modern gas turbine energy efficiency is using cyclic air intercooling between the stages of high- and low-pressure compressors. For intercooling, it is possible to use cooling ... -
Investigations of Rake and Rib Structures in Sand Traps to Prevent Sediment Transport in Hydropower Plants
(Journal article; Peer reviewed, 2021)In order to increase the lifespan of hydraulic turbines in hydropower plants, it is necessary to minimize damages caused by sediment erosion. One solution is to reduce the amount of sediments by improving the design of ... -
Is It Possible to Supply Norwegian Apartment Blocks with 4th Generation District Heating?
(Journal article; Peer reviewed, 2019)Direct electricity is widely used for heating purposes in Norway, leading to significant strain on the electricity grid during the heating season. Conversion to 4th generation district heating (4GDH) is an effective method ... -
Laboratory Investigation of Impact of Injection–Abstraction Rate and Groundwater Flow Velocity on Groundwater Heat Pump Performance
(Peer reviewed; Journal article, 2023)Using low-temperature (shallow) groundwater as a heat source or heat sink is a common practice to supply space heating or cooling, especially in the United States, Canada, China, and several European countries. The groundwater ... -
Large floating structure with free-floating, self-stabilizing tanks for hydrocarbon storage
(Journal article; Peer reviewed, 2019)Hydrocarbon is a major source of energy for sustainable development. Storage of hydrocarbon products, however, requires a significant amount of land space to land-scarce countries like Singapore. This paper presents an ...