Blar i SINTEF Open på forfatter "Løvseth, Sigurd Weidemann"
-
Characterization of an ultrasonic flowmeter for liquid and dense phase carbon dioxide under static conditions
Arellano Prieto, Yessica Alexandra; Mollo, Nicholas; Løvseth, Sigurd Weidemann; Stang, Hans Georg Jacob; Bottino, Gerard (Peer reviewed; Journal article, 2022)Carbon Capture and Storage (CCS), seen as a necessary technology to mitigate global greenhouse gas emissions, requires traceable fiscal metering technologies for large-scale deployment. The present work assesses ultrasonic ... -
CO2Mix Project: Experimental Determination of Thermo Physical Properties of CO2-Rich Mixtures
Løvseth, Sigurd Weidemann; Skaugen, Geir; Stang, Hans Georg Jacob; Jakobsen, Jana Poplsteinova; Wilhelmsen, Øivind; Span, Roland; Wegge, Robin (Peer reviewed; Journal article, 2013)The CO2Mix project is established in order to fill important knowledge gaps regarding thermophysical properties of CO2-rich mixtures relevant for CCS conditioning and transport. Even small amounts of impurities can have a ... -
Depressurization of CO2 in a pipe:High-resolution pressure and temperature data and comparison with model predictions
Munkejord, Svend Tollak; Austegard, Anders; Deng, Han; Hammer, Morten; Stang, Hans Georg Jacob; Løvseth, Sigurd Weidemann (Peer reviewed; Journal article, 2020)The design of safe and cost-efficient CO2-transportation systems is an integral part of CO2 capture and storage (CCS) deployment. To achieve this, accurate transient flow models capturing the occurrence of gas, liquid and ... -
Formulating the optimization problem when using sequential quadratic programming applied to a simple LNG process
Wahl, Per Eilif; Løvseth, Sigurd Weidemann (Journal article; Peer reviewed, 2015)Sequential quadratic programming (SQP) may be very efficient compared with other techniques for the optimization of simple processes for the liquefaction of natural gas (LNG), and can be combined with process evaluation ... -
From droplets to process: Multilevel research approach to reduce emissions from LNG processes
Løvseth, Sigurd Weidemann; Snustad, Ingrid; Brunsvold, Amy; Skaugen, Geir; Wahl, Per Eilif; Lervåg, Karl Yngve (Peer reviewed; Journal article, 2015)In the Enabling Low-Emission LNG Systems project, SINTEF Energy Research and NTNU have since 2009 been developing knowledge and tools with the aim to enable environmental safe, cost-effective, and energy efficient LNG ... -
Liquid and Dense Phase Thermal Conductivity Measurements of CO2 + N2 and CO2 + CH4 Mixtures at Temperatures from 223 K to 308 K and Pressures up to 20 MPa
Kim, Dongchan; Løvseth, Sigurd Weidemann; Arami-Niya, Arash; may, Eric F. (Peer reviewed; Journal article, 2021)New data are presented for the thermal conductivity for CO2-rich binary mixtures in the liquid and dense phase, for temperatures between 223 and 308 K and pressures up to 20 MPa. Binary mixtures with mole fractions of 5% ... -
Need and Measurements of Accurate Thermodynamic Data for CCS
Løvseth, Sigurd Weidemann; Westman, Snorre Foss; Austegard, Anders; Stang, Hans Georg Jacob (Journal article, 2019) -
A new facility for viscosity and density measurements for CO2 – rich mixtures relevant for CO2 transport and storage
Khosravi, Bahareh; Austegard, Anders; Stang, Hans Georg Jacob; Einen, Caroline; Jakobsen, Jana Poplsteinova; Snustad, Ingrid; Løvseth, Sigurd Weidemann (Journal article, 2022)For safe and cost-effective design, optimization, and operation of CO2 capture, transport, and storage (CCS) processes, accurate viscosity and density data of CO2-rich mixtures are required. Currently, there are large ... -
Optimization of a simple LNG process using sequential quadratic programming
Wahl, Per Eilif; Løvseth, Sigurd Weidemann; Mølnvik, Mona J. (Journal article; Peer reviewed, 2013)The efficiency of using sequential quadratic programming (SQP) for the optimization of a PRICO process for the production of liquefied natural gas (LNG) is demonstrated. Most of the returned objective values have been ... -
Thermodynamics of the carbon dioxide plus argon (CO2+ Ar) system: An improved reference mixture model and measurements of vapor-liquid, vapor-solid, liquid-solid and vapor-liquid-solid phase equilibrium data at the temperatures 213–299 K and pressures up to 16 MPa
Løvseth, Sigurd Weidemann; Austegard, Anders; Westman, Snorre Foss; Stang, Hans Georg Jacob; Herrig, Stefan; Neumann, Tobias; Span, Roland (Journal article; Peer reviewed, 2018)Phase equilibrium behavior of the carbon dioxide and argon system has been investigated at the temperatures 213, 223, 243, 263, 273, 283, and 299 K. The full vapor-liquid equilibria phase envelope has been measured at all ... -
Thermodynamics of the carbon dioxide plus nitrogen plus methane (Co2 + N2 + Ch4) system: Measurements of vapor-liquid equilibrium data at temperatures from 223 to 298 K and verification of EOS-CG-2019 equation of state
Ottøy, Sindre; Neumann, Tobias; Stang, Hans Georg Jacob; Jakobsen, Jana Poplsteinova; Austegard, Anders; Løvseth, Sigurd Weidemann (Journal article; Peer reviewed, 2019)Vapor-liquid equilibria (VLE) data of the ternary mixture of CO2 + N2 + CH4 were measured at the isotherms 223 K, 253 K, 273 K, 283 K, and 298 K and for pressures in the range of 0.8 MPa–9.3 MPa. The 62 experimental dew ... -
Vapor - liquid equilibrium of the carbon dioxide/methane mixture at three isotherms
Petropoulou, Eirini; Voutsas, Epaminondas; Westman, Snorre Foss; Austegard, Anders; Stang, Hans Georg Jacob; Løvseth, Sigurd Weidemann (Journal article; Peer reviewed, 2018) -
Vapor-liquid equilibrium data for the carbon dioxide and carbon monoxide (CO2 + CO) system at the temperatures 253, 273, 283 and 298 K and pressures up to 13 MPawq32e
Westman, Snorre Foss; Austegard, Anders; Stang, Hans Georg Jacob; Løvseth, Sigurd Weidemann (Journal article; Peer reviewed, 2018)Vapor-liquid equilibrium measurements for the binary system CO2 + CO are reported at 253, 273, 283 and 298 K, with estimated standard uncertainties of maximum 9 mK in temperature, maximum 3 kPa in pressure, and maximum ... -
Vapor-liquid equilibrium data for the carbon dioxide and nitrogen (CO2+N2) system at the temperatures 223, 270, 298 and 303 K and pressures up to 18 MPa
Westman, Snorre Foss; Stang, Hans Georg Jacob; Løvseth, Sigurd Weidemann; Austegard, Anders; Snustad, Ingrid; Størset, Sigmund Østtveit; Ertesvåg, Ivar Ståle (Journal article; Peer reviewed, 2015)A new setup for the measurement of vapor-liquid phase equilibria of CO2-rich mixtures relevant for carbon capture and storage (CCS) transport conditions is presented. An isothermal analytical method with a variable volume ... -
Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa
Westman, Snorre Foss; Stang, Hans Georg Jacob; Løvseth, Sigurd Weidemann; Austegard, Anders; Snustad, Ingrid; Ertesvåg, Ivar Ståle (Journal article; Peer reviewed, 2016)Accurate thermophysical data for the CO2-rich mixtures relevant for carbon capture, transport and storage (CCS) are essential for the development of the accurate equations of state (EOS) and models needed for the design ...