 Transient natural gas liquefaction and its application to CCC-ES (energy storage with cryogenic carbon capture™)Farhad Fazlollahi, Alex Bown, Edris Ebrahimzadeh and Larry L. Baxter Energy, 2016, vol. 103, issue C, 369-384 Abstract: This paper presents steady-state and transient models and optimization of natural gas liquefaction using Aspen HYSYS. Steady-state exergy and heat exchanger efficiency analyses summarize the performance of several potential systems. Transient analyses of the optimal steady-state model produced most of the results discussed here. These results pertain to LNG (liquefied natural gas) generally and to an energy storage process associated with CCC (cryogenic carbon capture™) in which the LNG process plays a prominent role specifically. The energy storage CCC process influences the time constants and magnitudes of the flow rate characteristics. These flowrate variations affect all units, especially compressors and heat exchangers. The proposed process controls temperatures, pressures and other operating parameters. K-value- and U-value-techniques guide flowrate and heat exchanger stream variations. Transient responses to both ramping and step-changes in flow rates indicate process responses, including summary effects represented in transient efficiency graphs. Keywords: Transient natural gas liquefaction; Optimization; Exergy analysis; Aspen HYSYS (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:103:y:2016:i:c:p:369-384 DOI: 10.1016/j.energy.2016.02.109 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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