Blar i Institutt for energi og prosessteknikk på dokumenttype "Doctoral thesis"
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Aerodynamic Optimisation of Airfoils and Winglets for Wind Turbine Application
(Doctoral theses at NTNU;2017:263, Doctoral thesis, 2017)The presented thesis summarises work on applying evolutionary optimisation algorithms for the design of airfoils and winglets for wind turbine application. This approach is more computationally expensive than using traditional ... -
Airflow distribution for minimizing human exposure to airborne contaminants in healthcare facilities
(Doctoral theses at NTNU;2019:41, Doctoral thesis, 2019)Hospital-acquired infections (HAIs) have been a persistent problem in hospitals for over a century and are associated with significant mortality, morbidities and increasing healthcare cost. There is strong evidence that ... -
An Experimental and Computational Investigation of Gas/Particle Flow in a Vertical Lifter
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:192, Doctoral thesis, 2010)Experimental and computational investigations of dilute gas/particle flow in a vertical lifter are performed. The effect of superficial gas velocity, particle density, particle size distribution and particle loading on ... -
An experimental investigation of draft tube flow
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:36, Doctoral thesis, 2004)This thesis presents a study of the flow in draft tubes on hydro turbines, with different runner cone configurations, operating in the part load operating range. Dynamic wall pressure measurements on a model Francis ... -
An experimental investigation of liquid droplets impinging vertically on a deep liquid pool
(Doctoral Theses at NTNU, 1503-8181; 2009:230, Doctoral thesis, 2009)Interactions between droplets and liquid films are found widely in our daily life, and many interesting phenomena can be observed. Scientists study the phenomena not only because they are fascinating but also apply the ... -
An Experimental Investigation of Offshore Gas Turbine Intake Air Filter Performance
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:62, Doctoral thesis, 2011)Efficient intake air filtration is a key element for limiting fouling, erosion, and corrosion in the compressor section and hot corrosion in the hot section of offshore gas turbine installations. Current intake air systems ... -
An experimental study of oil-water flow in horizontal and inclined pipes
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:, Doctoral thesis, 2011) -
An immersed interface method for two-dimensional modelling of stratified flow in pipes
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:139, Doctoral thesis, 2004)This thesis deals with the construction of a numerical method for solving two-dimensional elliptic interface problems, such as fully developed stratified flow in pipes. Interface problems are characterized by its non-smooth ... -
An integrated framework for decision making on liquefied natural gas (LNG) projects
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:42, Doctoral thesis, 2013)The decision-making process is an individual activity. However most of decisions that need to be made in the modern industry must consider multiple decision makers. It is widely accepted that industrial projects have become ... -
Analysis and Design of LowTemperature Processes withFocus on LNG: Developing new Thermodynamics based Tools and introducing Exergy in Design Methodologies
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:270, Doctoral thesis, 2013)This thesis focuses on the development of new tools and methods for the analysis and design of highly efficient Low Temperature Processes (LTPs), in particular for those operating at sub−ambient conditions. Exergy Analysis ... -
Analysis of Natural Gas-Fired Power Cycles with Chemical Looping Combustion for CO2 Capture
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:138, Doctoral thesis, 2006)Chemical Looping Combustion (CLC) is a rather novel concept of hydrocarbon fuel energy conversion with inherent CO2 separation. In CLC, a solid oxygen carrier transports oxygen from air to the fuel; hence air and fuel ... -
Application and development of dissipation based combustion models for conventional and unconventional combustion processes
(Doctoral theses at NTNU;2023:51, Doctoral thesis, 2023)Concepts for burner operation have manifolded under the influence of increasing performance demands for combustion processes. This is to support the global effort to reduce pollution and greenhouse gas emissions radically. ... -
Applications and energy consumption of demand controlled ventilation systems : modelling, simulation and implementation of modular builtdynamical VAV systems and control strategies
(Doktoravhandlinger ved NTNU, 1503-8181; 34, Doctoral thesis, 2002)This thesis emphasizes on VAV (Variable Air Volume) ventilation systems and, in particular, modelling and simulation of such systems. It touches a number of important HVAC related issues. Demand controlled ventilation (DCV) ... -
Artificial Thawing of Seasonally Frozen Ground: Performance Characteristics of Hydronic Based Thawing
(Doctoral theses at NTNU;2017:321, Doctoral thesis, 2017) -
Assessment of alternative concepts for improved gas turbine operation under varying loads in decarbonized energy systems
(Doctoral theses at NTNU;2024:120, Doctoral thesis, 2024)This thesis is devoted to the assessment of alternative concepts for improved gas turbine operation under varying loads in decarbonized energy systems. The aim is to contribute towards curbing the emission of Carbon Dioxide ... -
Assessment of Moving Bed Temperature Swing Adsorption Process for Post-Combustion CO2 capture
(Doctoral theses at NTNU;2022:90, Doctoral thesis, 2022)In the context of post-combustion CO2 capture, adsorption-based processes are considered a promising alternative to absorption technologies thanks to their lower environmental impact, absence of corrosion problems, and ... -
Assessment of pressure swing adsorption as CO2 capture technology in coal-fired power plants
(Doctoral thesis at NTNU;2016:150, Doctoral thesis, 2016)Coal-based power generation is responsible for a significant share of CO2 emissions on a global scale. Technologies to drastically reduce coal carbon footprint are critical for meeting mitigation targets. Absorption, ... -
Axial Compressor Performance Deterioration and Recovery through Online Washing
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:85, Doctoral thesis, 2007)Gas turbine performance deterioration can negatively affect overall production capacity of power plants and cause major economic losses. Gas turbines deteriorate from fouling in the compressor section, and online washing ... -
Beyond life cycle assessment: Building a methods extension ecosystem for the environmental assessment of emerging technologies
(Doctoral theses at NTNU;2023:110, Doctoral thesis, 2023)The world is undergoing unprecedented rapid technological and climatic change. The urgency with which we must address the challenges of said climatic change increases with each passing day of inaction. Technology is often ... -
Biomass gasification : combustion of gas mixtures
(Doktoravhandlinger ved NTNU, 1503-8181; 42, Doctoral thesis, 2002)The work presented in this study is primarily experimental and covers the following two main areas; gasification of biomass and combustion of gas mixtures. The work on biomass gasification includes the design of a laboratory ...