Browsing NTNU Open by Author "Gundersen, Truls"
Now showing items 1-20 of 94
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A Framework for Thermodynamic Design of Stirling Engines
Elle, Elisabeth; Aune, Anne (Master thesis, 2014)Most commercialized Stirling machines operate at high temperature differentials and ratios, therefore less is known of machines that operate at low temperatures. This thesis aims to establish specific parameters for Stirling ... -
A new paradigm in process synthesis focus on design of power plants and industrial processes integrated with CO2 capture
Anantharaman, Rahul; Gundersen, Truls (Journal article; Peer reviewed, 2016)Process synthesis methods have only recently been applied for the design of CO2 capture systems. At the crux of the CO2 capture process is a separation technology (sorbent, membrane or phase separation) applied to CO2/N2, ... -
A Nonsmooth Approach to Modeling and Optimization - Application to Liquefied Natural Gas Processes and Work and Heat Exchange Networks
Vikse, Matias (Doctoral theses at NTNU;2020:54, Doctoral thesis, 2020)Despite their implicit presence in many process systems engineering applications, nonsmooth functions have repeatedly been shunned due to the existence of nondifferentiable points that cause issues for numerical solvers ... -
A systematic Design Methodology for Multicomponent Membrane Systems
Bamigbetan, Opeyemi Olayinka (Master thesis, 2015)Abstract Fossil fuel predominantly dominates the world energy supply. With energy demand set to increase, especially for developing countries, CO2 emissions tax and the environmental impact of high CO2 concentration in ... -
Alternative CO2 Removal Solutions for the LNG Process on an FPSO
Haugen, Erlend Lunde (Master thesis, 2011)The Höegh LNG FPSO is designed for a CO2 removal of a gas stream containing 12.3% CO, but has a desire to add discuss alternative CO2 compositions.The thesis aims to give an introduction of some CO2 removal technologies. ... -
At what Pressure Shall CO2 Be Transported by Ship? An in-Depth Cost Comparison of 7 and 15 Barg Shipping
Roussanaly, Simon; Deng, Han; Skaugen, Geir; Gundersen, Truls (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 ... -
Carbon chain analysis on a coal IGCC — CCS system with flexible multi-products
Zhang, Xiangping; Gundersen, Truls; Roussanaly, Simon; Brunsvold, Amy; Zhang, Suojiang (Journal article; Peer reviewed, 2013)A carbon chain analysis is applied to assess a complex energy conversion system with CO2 capture and storage (CCS). A coal integrated gasification combined cycle, with CCS, which co-produces electricity and liquid fuels ... -
CO2 Capture Processes: Novel Approach to Benchmarking and Evaluation of Improvement Potentials
Anantharaman, Rahul; Jordal, Kristin; Gundersen, Truls (Journal article; Peer reviewed, 2013)A consistent and transparent benchmarking methodology is required for comparison and ranking of different technologies for CO2 capture, and also for evaluation of different means of integrating novel capture process units ... -
Coal Based Power Plants Using Oxy-Combustion for CO2 Capture: Pressurized Coal Combustion to Reduce Capture Penalty
Soundararajan, Rengarajan; Gundersen, Truls (Journal article; Peer reviewed, 2012)The goal of this paper is to design and study a new variation of an oxy-combustion coal based power plant with CO2 capture that employs a pressurized coal combustor. The concept is compared with an atmospheric pressure ... -
Combinatorial Problems in the Design of Heat Exchanger Networks
Megård, Martin Johnsen (Master thesis, 2016)Abstract Heat Exchanger Network Synthesis (HENS) is one of the most researched areas in process synthesis. The main objective of this work is to evaluate the possibility of implementing an alternative stream match generator ... -
Comparison of Liquefaction Processes for FLNG
Kim, Donghoi; Gundersen, Truls (Journal article, 2018)This paper conducts a comparative evaluation of natural gas liquefaction processes developed for floating facilities. The simulation results are analyzed, focusing on thermodynamic efficiency, compactness, safety, and ... -
Comparison of reformulations of the Duran-Grossmann model for Work and Heat Exchange Network (WHEN) synthesis
Yu, Haoshui; Vikse, Matias; Gundersen, Truls (Journal article; Peer reviewed, 2018)Work and Heat Exchange Networks (WHENs) have received increasing attention from both researchers and engineers during the last 5-10 years. The Duran-Grossmann model (Duran and Grossmann, 1986) can deal with heat integration ... -
Compression and expansion at the right pinch temperature
Fu, Chao; Uv, Preben Maurstad; Nygreen, Bjørn; Gundersen, Truls (Journal article; Peer reviewed, 2017)Heat Integration is extended to the topic of Heat and Work Integration when pressure changing equipment such as compressors and expanders are included in heat exchanger network design. The latter topic is much more complex ... -
Compression and Expansion at the Right Pinch Temperature
Fu, Chao; Uv, Preben Maurstad; Nygreen, Bjørn; Gundersen, Truls (Chapter, 2017)Heat Integration is extended to the topic of Heat and Work Integration when pressure changing equipment such as compressors and expanders are included in heat exchanger network design. The latter topic is much more complex ... -
Conceptual design of an efficient Hydrogen production process from Natural Gas using an extension to the “G-H” methodology
Rammohan Subramanian, Avinash Shankar; Anantharaman, Rahul; Gundersen, Truls (Journal article; Peer reviewed, 2018)Conceptual design of novel efficient hydrogen production processes is essential to realizing a future clean energy scenario. Traditional approaches to process design involve detailed modelling of unit operations followed ... -
Design and evaluation of gas protraction for an offshore oil field
Lindland, Øystein (Master thesis, 2010)Field A is a marginal oil field located in the North Sea, operated by Det norske oljeselskap ASA (hereby Det norske). Det norske are currently working on the maturation of the field development, and have identified three ... -
Design and Implementation of Modular Subroutines for Simulation of LNG Plants
Vikse, Matias (Master thesis, 2016)A nonsmooth equation-oriented multistream heat exchanger (MHEX) model has been developed by the Process Systems Engineering Laboratory at Massachusetts Institute of Technology that is intended to be a part of a rigorous ... -
Design of Steam Cycles for Oxy-combustion Coal based Power Plants with Emphasis on Heat Integration
Soundararajan, Rengarajan; Anantharaman, Rahul; Gundersen, Truls (Journal article; Peer reviewed, 2014)The Oxy-combustion method of CO2 capture is considered to have several advantages over other methods for CO2 capture from coal based power plants. The capture process is energy intensive and hence expensive. Heat integration ... -
Development and use of exergy efficiency for complex cryogenic processes
Kim, Donghoi; Gundersen, Truls (Journal article; Peer reviewed, 2018)In this paper, exergy efficiencies, which are effective performance parameters for cryogenic processes, are categorized based on their exergy decomposition levels. However, the existing efficiencies are not standardized ... -
Energy and Environmental Aspects of an FPSO for LNG Production
Revheim, Lars Petter Rein (Master thesis, 2009)The floating production unit HLNG FPSO-1 has been evaluated with respect to its energy consumption and emissions to air, and improvement potentials within the same context have been suggested. The thesis describes theory ...