Finite-time thermodynamics: Multistage separation processes consuming mechanical energy
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Finite-time thermodynamics : Multistage separation processes consuming mechanical energy. / Sukin, Ivan; Tsirlin, Anatoly; Andresen, Bjarne Bøgeskov.
I: Chemical Engineering Science, Bind 248, Nr. Part B, 117250, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Finite-time thermodynamics
T2 - Multistage separation processes consuming mechanical energy
AU - Sukin, Ivan
AU - Tsirlin, Anatoly
AU - Andresen, Bjarne Bøgeskov
PY - 2022
Y1 - 2022
N2 - We analyze limiting capabilities of mechanical separation processes using finite-time thermodynamics and obtain estimates for the lower bound of the energy consumption for systems of a given productivity. We show that this consumption does not tend to zero when the molar fraction of one of the components tends to unity. The estimates obtained are used to analyze multistage separation processes, containing recycles, especially, isotope separation systems. For such systems we obtain relations between fluxes, mass transfer surfaces, and stage number. These relations are deduced from the condition of minimum dissipation, assuming that the enrichment factor is constant. We also obtain the optimality condition for the sequence of separations needed for a multicomponent mixture in a mechanical separation systems.
AB - We analyze limiting capabilities of mechanical separation processes using finite-time thermodynamics and obtain estimates for the lower bound of the energy consumption for systems of a given productivity. We show that this consumption does not tend to zero when the molar fraction of one of the components tends to unity. The estimates obtained are used to analyze multistage separation processes, containing recycles, especially, isotope separation systems. For such systems we obtain relations between fluxes, mass transfer surfaces, and stage number. These relations are deduced from the condition of minimum dissipation, assuming that the enrichment factor is constant. We also obtain the optimality condition for the sequence of separations needed for a multicomponent mixture in a mechanical separation systems.
U2 - 10.1016/j.ces.2021.117250
DO - 10.1016/j.ces.2021.117250
M3 - Journal article
VL - 248
JO - Chemical Engineering Science
JF - Chemical Engineering Science
SN - 0009-2509
IS - Part B
M1 - 117250
ER -
ID: 284902795