Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 8350-8369 of 12824
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Optical selection rules of zigzag graphene nanoribbons
(Journal article; Peer reviewed, 2017)We present an analytical tight-binding theory of the optical properties of graphene nanoribbons with zigzag edges. Applying the transfer matrix technique to the nearest-neighbor tight-binding Hamiltonian, we derive analytical ... -
Optically Active Surfactants from the Tartaric Acids. Synthesis and Properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:84, Doctoral thesis, 2009) -
Optimal boundary control of a contact thawing process for foodstuff
(Journal article, 2016)In this work an approach for thawing blocks of foodstuff, in particular fish, is introduced. The functional principle is based on plate freezer technology, which has been used in industry for decades. The aim of this work ... -
Optimal choice of state tomography quorum formed by projection operators
(Journal article; Peer reviewed, 2019)A minimal set of measurement operators for quantum state tomography has in the nondegenerate case ideally eigenbases which are mutually unbiased. This is different for the degenerate case. Here we consider the situation ... -
Optimal Control of Energy Storage Systems
(Master thesis, 2021) -
Optimal Control of TES System by Using Nonlinear Model Predictive Control
(Master thesis, 2020)WE-utvinningsprosess (industriell spillvarme) gjenbruker varmeenergi som ellers ville gått tapt for å sikre og forbedre ressursbevaring og avfall, samt for å redusere kostnader. Under slike omstendigheter kan et termisk ... -
Optimal control of thermal energy storage under supply and demand uncertainty
(Master thesis, 2019) -
Optimal design issues of a gas-to-liquid process
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:9, Doctoral thesis, 2012)Interests in Fischer-Tropsch (FT) synthesis is increasing rapidly due to the recent improvements of the technology, clean-burning fuels (low sulphur, low aromatics) derived from the FT process and the realization that the ... -
Optimal dynamic operation of natural gas combined cycles accounting for stresses in thick-walled components
(Journal article; Peer reviewed, 2020)Flexible natural gas combined cycles will play a fundamental role in future electric markets.Stressesinthick-walled components and gasturbine load ramps are arguably the main limiting factors during transient operation.Classical ... -
Optimal harvesting in a changing climate
(Peer reviewed; Journal article, 2021)Choosing the right harvesting strategy is crucial for sustainable utilization of biological resources but is challenging in real systems with fluctuating environments. This challenge is expected to become even greater with ... -
Optimal Operation and Control of a Thermal Energy Storage System: Classical Advanced Control versus Model Predictive Control
(Peer reviewed; Journal article, 2020)The objective of this work is to define the optimal operation and control for a thermal storage system with heat sources and a consumer, which exchange utilities using one hot water thermal energy storage tank. In this ... -
Optimal operation and control of heat to power cycles: A new perspective from a systematic plantwide control approach
(Peer reviewed; Journal article, 2020)In this work, we use a plantwide control framework to systematically identify the control objectives, operational and environmental constraints, and degrees of freedom for a heat to power cycle with a drum, one pressure ... -
Optimal Operation and Control of Heat-to-Power Cycles: a New Perspective using a Systematic Plantwide Control Approach
(Journal article; Peer reviewed, 2019)We use a systematic plantwide control framework to analyze optimal operation of a simple heatto- power steam cycle with a single pressure level and a drum. The present control solutions for power plants1 have been developed ... -
Optimal Operation and Control of Thermal Energy Systems
(Doctoral theses at NTNU;2023:43, Doctoral thesis, 2023)This thesis explores broad topics in the area of optimal control and operation of thermal energy systems, and it is divided into three parts. Part I is entitled Optimal operation and control of heat-to-power cycles: a ... -
Optimal Operation and Design of a Thermal Energy Storage Tank
(Master thesis, 2021) -
Optimal Operation of a Solar Powered Thermal Energy Storage System for Cooking
(Master thesis, 2020)I denne masteroppgaven ble driften av et varmelagringssystem drevet av overskuddsenergi fra solcelleproduksjon for matlaging modellert og optimalisert. Hovedformålet med oppgaven var å undersøke systemets kapasitet under ... -
Optimal operation of a subsea separation system including a coalescence based gravity separator model and a produced water treatment section
(Journal article; Peer reviewed, 2019)In this work, we develop a model for a gravity separator, and we use it together with models from the literature to study the control of a subsea separation system that separates oil, gas, and water from well fluids in ... -
Optimal Operation of Dividing Wall Columns
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:177, Doctoral thesis, 2011)This thesis discusses the control and operation of dividing wall columns. In particular the attention is on the Kaibel column, a four-product dividing wall column with two side-streams. The Kaibel column has for a given ... -
Optimal operation of energy storage in buildings - Use of hot water systems
(Master thesis, 2013)The purpose of this study is to maximize the potential which lies in domestic hot water heaters. Today the temperature function in the hot water tank is constant throughout the day and the hot water demand is met by an ... -
Optimal Operation of Heat Exchanger Networks
(Master thesis, 2011)Optimal operation of heat exchanger networks is much less studied than optimal design. The control objective of a heat exchanger network is to control the temperature out of the heat exchanger network within a certain ...