Blar i NTNU Open på forfatter "Berstad, David Olsson"
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Acid Gas Removal in Geothermal Power Plant in Iceland
Berstad, David Olsson; Nord, Lars O. (Journal article; Peer reviewed, 2016-01)A large part of the energy covering the electricity and heating demands in Iceland is generated in geothermal power plants. The Hellisheiði power plant, designed for 300 MWe and 133 MWth, is located in close proximity to ... -
CO2 Capture and Enhanced Hydrogen Production Enabled by Low-Temperature Separation of PSA Tail Gas: A Detailed Exergy Analysis
Berstad, David Olsson; Straus, Julian; Gundersen, Truls (Journal article; Peer reviewed, 2024)Abstract Hydrogen from natural gas reforming can be produced efficiently with a high CO2 capture rate. This can be achieved through oxygen-blown autothermal reforming as the core technology, combined with pressure-swing ... -
CO2 Capture from IGCC by Low-Temperature Synthesis Gas Separation
Berstad, David Olsson; Skaugen, Geir; Roussanaly, Simon; Anantharaman, Rahul; Nekså, Petter; Jordal, Aina Benedikte Kristin; Trædal, Stian; Gundersen, Truls (Journal article; Peer reviewed, 2022)Capture conditions for CO2 vary substantially between industrial point sources. Depending on CO2 fraction and pressure level, different capture technologies will be required for cost- and energy-efficient decarbonisation. ... -
Comparing exergy losses and evaluating the potential of catalyst-filled plate-fin and spiral-wound heat exchangers in a large-scale Claude hydrogen liquefaction process
Skaugen, Geir; Berstad, David Olsson; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)Detailed heat exchanger designs are determined by matching intermediate temperatures in a large-scale Claude refrigeration process for liquefaction of hydrogen with a capacity of 125 tons/day. A comparison is made of ... -
Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production
Berstad, David Olsson; Wilhelmsen, Øivind; Skjervold, Vidar T.; Nekså, Petter (Chapter, 2017)Liquid hydrogen (LH2) has the potential to become a global energy commodity analogous to liquefied natural gas (LNG) in the future. This will require LH2 production capacities of similar scale as for large-scale LNG plants. ... -
Design of a novel hybrid process for membrane assisted clean hydrogen production with CO2 capture through liquefaction
Kim, Donghoi; Liu, Zhongxuan; Anantharaman, Rahul; Riboldi, Luca; Odsæter, Lars Hov; Berstad, David Olsson; Peters, Thijs; Polfus, Jonathan; Malerød-Fjeld, Harald; Gundersen, Truls (Peer reviewed; Journal article, 2022)This work introduces a novel hybrid concept to produce H2 from natural gas by using the protonic membrane reformer (PMR) with liquefaction based CO2 capture system. For process intensification, recycling of the off-gas ... -
Dissecting the exergy balance of a hydrogen liquefier: Analysis of a scaled-up claude hydrogen liquefier with mixed refrigerant pre-cooling
Berstad, David Olsson; Skaugen, Geir; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)For liquid hydrogen (LH2) to become an energy carrier in energy commodity markets at scales comparable to for instance LNG, liquefier capacities must be scaled up several orders of magnitude. While state-of-the-art liquefiers ... -
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 ... -
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 ... -
Reducing the exergy destruction in the cryogenic heat exchangers of hydrogen liquefaction processes
Wilhelmsen, Øivind; Berstad, David Olsson; Aasen, Ailo; Nekså, Petter; Skaugen, Geir (Journal article; Peer reviewed, 2018)A present key barrier for implementing large-scale hydrogen liquefaction plants is their high power consumption. The cryogenic heat exchangers are responsible for a significant part of the exergy destruction in these plants ... -
The role of process synthesis in the systematic design of energy efficient fossil fuel power plants with CO2 capture
Anantharaman, Rahul; Jordal, Kristin; Berstad, David Olsson; Gundersen, Truls (Journal article; Peer reviewed, 2013)CO2 capture and storage has a potential of reducing CO2 emissions from large point sources such as fossil fuel power plants. CO2 capture is associated with substantial capital expenditures, operational expenditures dominated ... -
Understanding the physical phenomena that occur inside heat exchanger for liquefactin of hydrogen
Wilhelmsen, Øivind; Skaugen, Geir; Berstad, David Olsson; Aasen, Ailo; Nekså, Petter (Chapter, 2017)Liquid hydrogen is an attractive solution for long-range distribution. The largest barriers for implementing large-scale hydrogen liquefaction plants are currently their high energy consumption and cost. The heat exchangers ...