Blar i NTNU Open på forfatter "Gundersen, Truls"
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Integrert Optimalisering av Brønner, Transportledninger og Separasjonsprosess
Gangstad, Laila Anita (Master thesis, 2009)Hovedformålet med denne masteroppgaven har vært å benytte Aspen HYSYS og GAP til å utvikle modeller og verktøy som kan benyttes til en integrert optimalisering av brønner, transportledninger og separasjonsprosess på Troll ... -
A layout design method for an industrial park based on a novel arrangement algorithm – Consideration of pipe network and multiple hazard sources
Wang, Ruiqi; Wang, Yufei; Gundersen, Truls; Wu, Yan; Feng, Xiao; Liu, Mengxi (Peer reviewed; Journal article, 2020)The general layout design of an industrial park has a significant impact on safety, transportation, piping, and land occupation. Currently, the relevant studies are not mature, and most of the practical designs heavily ... -
Liquid air energy storage – analysis and prospects
Liu, Zhongxuan; Ustolin, Federico; Spitthoff, Lena; Lamb, Jacob Joseph; Gundersen, Truls; Pollet, Bruno; Burheim, Odne Stokke (Chapter, 2020) -
LNG anlegg drevet av kraft fra nettet: Kryogen CO2-utskilling
Østerbø, Astrid Merete (Master thesis, 2008)Snøhvit Tog I på Melkøya er verdens første LNG-anlegg hvor kjølekompressorene drives elektrisk, med kraft produsert fra et kraftvarmeverk. Det vurderes nå utbygging av et Snøhvit Tog II hvor kjølekompressorene skal drives ... -
Low Temperature Applications for CO2 Capture in Hydrogen Production
Kim, Donghoi; Berstad, David Olsson; Anantharaman, Rahul; Straus, Julian; Peters, Thijs; Gundersen, Truls (Chapter, 2020)The recent development of the protonic membrane reformer (PMR) technology allows an energy efficient hydrogen production from natural gas. To liquefy and separate CO2 from the retentate gas of the PMR, various low temperature ... -
Model reformulations for Work and Heat Exchange Network (WHEN) synthesis problems
Yu, Haoshui; Vikse, Matias; Anantharaman, Rahul; Gundersen, Truls (Journal article; Peer reviewed, 2019)The Duran-Grossmann model can deal with heat integration problems with variable process streams. Work and Heat Exchange Networks (WHENs) represent an extension of Heat Exchange Networks. In WHEN problems, the identities ... -
Modeling an EDC Cracker using Computational Fluid Dynamics (CFD)
Kaggerud, Torbjørn Herder (Master thesis, 2007)The process used by the Norwegian company Hydro for making Vinyl Chloride Monomer (VCM) from natural gas and sodium chloride has been studied. A three dimensional CFD model representing the firebox of the EDC cracker has ... -
Modeling and Optimization of Simultaneous Waste Heat Utilization and Wastewater Treatment Processes
Yu, Haoshui; Chen, Zhichao; He, Chang; Gundersen, Truls (Chapter, 2019)Huge amounts of low-temperature waste heat, which can be utilized to improve the energy efficiency in various ways, are available in the process industries. Organic Rankine Cycle (ORC) is one of the promising technologies ... -
Modeling and Simulation of a Waste Tire to Liquefied Synthetic Natural Gas (SNG) Plant
Rammohan Subramanian, Avinash Shankar; Kim, Donghoi; Adams, Thomas; Gundersen, Truls (Chapter, 2019)Thermochemical conversion of solid wastes through gasification offers the dual benefit of production of high-value fuels from the recovered energy and environmentally friendly waste disposal. Waste tires in particular may ... -
Modeling and simulation of energy systems: A review
Rammohan Subramanian, Avinash Shankar; Gundersen, Truls; Adams, Thomas Alan (Journal article; Peer reviewed, 2018)Energy is a key driver of the modern economy, therefore modeling and simulation of energy systems has received significant research attention. We review the major developments in this area and propose two ways to categorize ... -
Multi-component Fluid Cycles in Liquid Air Energy Storage
Liu, Zhongxuan; Kim, Donghoi; Gundersen, Truls (Peer reviewed; Journal article, 2020)With the penetration of renewable energy sources into the energy market, an emerging problem is the energy stability during energy supply and delivery. Energy storage technologies have the ability to overcome the intermittent ... -
A multi-objective optimization method for industrial park layout design: The trade-off between economy and safety
Wang, Ruiqi; Wang, Yufei; Gundersen, Truls; Wu, Yan; Feng, Xiao; Lu, Mengxi (Peer reviewed; Journal article, 2021)The general layout design significantly impacts the economy and safety performance of an industrial park. In most of the previous works, safety issues are converted to economic numbers in objective functions. However, this ... -
New technologies for purification and carbon capture in hydrogen production from natural gas
Skrebergene, Kristin (Master thesis, 2015)In a society increasingly concerned with environmentally friendly solutions for energy extraction, hydrogen is expected to be an important energy carrier. Hydrogen can originate from various feedstocks, where fossil fuels ... -
Nonsmooth Analysis In Process Modeling, Design And Optimization
Barton, Paul I; Gundersen, Truls; Nielsen, Caroline J.; Vikse, Matias (Chapter, 2019)Nonsmooth models provide a powerful, compact and intuitive modeling paradigm that can represent a growing spectrum of physical phenomena over broad ranges of conditions in terms of the original process variables. This paper ... -
Nonsmooth Formulation for Handling Unclassified Process Streams in the Optimization of Work and Heat Exchange Networks
Vikse, Matias; Watson, Harry AJ; Barton, Paul I; Gundersen, Truls (Peer reviewed; Journal article, 2019)Pinch analysis provides a systematic methodology for improving efficiency through enhanced process integration. Originally, the methodology focused on heat integration with heat exchanger network (HEN) synthesis. However, ... -
A novel cost-effective silica membrane-based process for helium extraction from natural gas
Hamedi, Homa; Karimi, Iftekhar A; Gundersen, Truls (Peer reviewed; Journal article, 2019)Natural gas reserves with 0.3–2 mol% helium are considered as the only viable source for this noble gas. Currently, cryogenic separation is used to extract helium, but it is energy-intensive. While membrane-based separation ... -
A Novel Integrated System Driven by Allam Cycle for the Simultaneous Energy, Water, and Waste Management
Alirahmi, Seyed Mojtaba; Sin, Gürkan; Arabkoohsar, Ahmad; Gundersen, Truls; Yu, Haoshui (Peer reviewed; Journal article, 2023)Energy and water are indispensable to human activities and economic growth, especially with increasing energy and water security concerns in the coming years. In addition, with fast urbanization, how to deal with huge ... -
Novel integrated system for cryogenic CO2 capture and liquefaction of natural gas using natural refrigerants
He, Ting; Gundersen, Truls; Lin, Wensheng (Chapter, 2022)The high triple point temperature of CO2 makes it difficult to remove CO2 from conventional natural gas by cryogenic distillation. However, for natural gas rich in ethane, CO2 can be separated from natural gas in a liquid ... -
On the exergy efficiency of CO<inf>2</inf> capture: The relation between sub-process and overall efficiencies
Berstad, David Olsson; Gundersen, Truls (Peer reviewed; Journal article, 2023)A generic exergy targeting tool for gas separation processes is developed, which is applicable to any defined boundary conditions for incoming feed gas as well as delivered separation products. Whereas targeting tools in ... -
Optimal cryogenic processes for nitrogen rejection from natural gas
Hamedi, Homa; Karimi, Iftekhar A; Gundersen, Truls (Journal article; Peer reviewed, 2018)Nitrogen rejection processes are usually needed for two natural gas sources: sub-quality natural gas reserves and produced gas from enhanced oil/gas recovery technologies. The nitrogen content of natural gas in the former ...