Browsing Fakultet for ingeniørvitenskap (IV) by Journals "Energies"
Now showing items 1-20 of 163
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A Comprehensive Thermal and Structural Transient Analysis of a Boiler’s Steam Outlet Header by Means of a Dedicated Algorithm and FEM Simulation
(Journal article; Peer reviewed, 2020)Increasing the share of renewables in energy markets influences the daily operation of thermal power units. High capacity power units are more frequently operated to balance power grids and, thus, steam boilers are exposed ... -
A Crane Overload Protection Controller for Blade Lifting Operation Based on Model Predictive Control
(Journal article; Peer reviewed, 2019)Lifting is a frequently used offshore operation. In this paper, a nonlinear model predictive control (NMPC) scheme is proposed to overcome the sudden peak tension and snap loads in the lifting wires caused by lifting speed ... -
A Machine Learning Approach to Correlation Development Applied to Fin-Tube Bundle Heat Exchangers
(Journal article; Peer reviewed, 2018)Heat exchanger designers need reliable thermal-hydraulic correlations to optimize heat exchanger designs. This work combines an adaptive sampling method with a Computational Fluid Dynamics (CFD) simulator to obtain increased ... -
A Review of Systems and Technologies for Smart Homes and Smart Grids
(Journal article; Peer reviewed, 2016)In the actual era of smart homes and smart grids, advanced technological systems that allow the automation of domestic tasks are developing rapidly. There are numerous technologies and applications that can be installed ... -
A Simple Analytical Approach to Simulate Underbalanced-drilling in Naturally Fractured Reservoirs - The Effect of Short Overbalanced Conditions and Time Effect
(Journal article; Peer reviewed, 2010)This paper describes an analytical approach to investigate the nature of short overbalanced conditions and time effects during underbalanced drilling (UBD) in a naturally fractured reservoir. This study uses an analytical ... -
A Two-Dimensional Study on the Effect of Anisotropy on the Devolatilization of a Large Wood Log
(Journal article; Peer reviewed, 2019)In this work, a two-dimensional (2D) model for wood particle drying, devolatilization, and char conversion is presented and validated against experimental studies of devolatilization of a large, dry, cylindrical birch wood ... -
Achieving a Flexible and Sustainable Energy System: The Case of Kosovo
(Journal article; Peer reviewed, 2019)In today’s energy system, the diffusion of renewable-based technologies is accelerating rapidly. Development of mechanisms that support the large-scale deployment of renewables towards global warming and climate change ... -
Acid treatment as a way to reduce shale rock mechanical strength and to create a material prone to the formation of permanent well barrier
(Peer reviewed; Journal article, 2021)Utilization of natural shale formations for the creation of annular barriers in oil and gas wells is currently discussed as a mean of simplifying cumbersome plugging and abandonment procedures. Shales that are likely to ... -
Advanced Thermodynamic Analysis of a Transcritical R744 Booster Refrigerating Unit with Dedicated Mechanical Subcooling
(Journal article; Peer reviewed, 2018)In this work the thermodynamic performance of a transcritical R744 booster supermarket refrigeration system equipped with R290 dedicated mechanical subcooling (DMS) was exhaustively investigated with the aid of the advanced ... -
An Integrated Assessment of the Environmental and Economic Impact of Offshore Oil Platform Electrification
(Journal article; Peer reviewed, 2019)Electrification of offshore oil and gas installations on the Norwegian continental shelf is one of several options to decrease the CO2 emitted from these installations. However, there is an ongoing debate regarding how the ... -
Analysis of a vertical flat heat pipe using potassium working fluid and a wick of compressed nickel foam
(Journal article; Peer reviewed, 2016)Heat at high temperatures, in this work 400–650 °C, can be recovered by use of cooling panels/heat pipes in the walls of aluminum electrolysis cells. For this application a flat vertical heat pipe for heat transfer from a ... -
Analysis of Combined Cycle Power Plants with Chemical Looping Reforming of Natural Gas and Pre-Combustion CO2 Capture
(Journal article; Peer reviewed, 2018)In this paper, a gas-fired combined cycle power plant subjected to a pre-combustion CO2 capture method has been analysed under different design conditions and different heat integration options. The power plant configuration ... -
Analysis of Surface Texturing of Silicon with Surface Regular Microstructure Using C Method
(Peer reviewed; Journal article, 2022)Silicon, as the most abundant element in the earth’s crust and the most common material used in electronic and optical equipment, has attracted the attention of many individuals to change the properties of this material, ... -
Application of a Central Composite Design for the Study of NOx Emission Performance of a Low NOx Burner
(Journal article; Peer reviewed, 2015)In this study, the influence of various factors on nitrogen oxides (NOx) emissions of a low NOx burner is investigated using a central composite design (CCD) approach to an experimental matrix in order to show the applicability ... -
Application of Digitalization in Real-Time Analysis of Drilling Dynamics Using Along-String Measurement (ASM) Data Along Wired Pipes
(Peer reviewed; Journal article, 2022)An automated drilling system requires a real-time evaluation of the drilling bit during drilling to optimize operation and determine when to stop drilling and switch bits. Furthermore, in the dynamic modeling of drill ... -
Assessing Climate Change Impacts on Global Hydropower
(Journal article; Peer reviewed, 2012)Currently, hydropower accounts for close to 16% of the world’s total power supply and is the world’s most dominant (86%) source of renewable electrical energy. The key resource for hydropower generation is runoff, which ... -
Assessing Responsive Building Envelope Designs Through Robustness-Based Multi-Criteria Decision Making in Zero-Emission Buildings
(Journal article, 2022)Responsive building envelopes (RBEs) are central to developing sustainability strategies for zero emission/energy buildings (ZEBs). RBEs are a large group of complex technologies and systems, which is why multi-criteria ... -
Assessment of organic Rankine cycle part-Load performance as gas turbine bottoming cycle with variable area nozzle turbine technology
(Peer reviewed; Journal article, 2021)Power cycles on offshore oil and gas installations are expected to operate more at varied load conditions, especially when rapid growth in renewable energies puts them in a load-following operation. Part-load efficiency ... -
At what Pressure Shall CO2 Be Transported by Ship? An in-Depth Cost Comparison of 7 and 15 Barg Shipping
(Peer reviewed; Journal article, 2021)The pipeline has historically been the preferred means to transport CO2 due to its low cost for short distances and opportunities for economies of scale. However, interest in vessel-based transport of CO2 is growing. While ... -
Automatic Inspection of Photovoltaic Power Plants Using Aerial Infrared Thermography: A Review
(Peer reviewed; Journal article, 2022)In recent years, aerial infrared thermography (aIRT), as a cost-efficient inspection method, has been demonstrated to be a reliable technique for failure detection in photovoltaic (PV) systems. This method aims to quickly ...