TY - GEN
T1 - Semi-theoretical model of the wetting characteristics of aqueous ionic liquid on an aluminium finned-tube desiccant contactor
AU - Giannetti, Niccolo
AU - Varela, Richard Jayson
AU - Ariyadi, Hifni
AU - Yamaguchi, Seiichi
AU - Saito, Kiyoshi
AU - Wang, Xin Ming
AU - Nakayama, Hiroshi
N1 - Publisher Copyright:
© 2019 International Institute of Refrigeration. All rights reserved.
PY - 2019
Y1 - 2019
N2 - A new design of an internally cooled desiccant contactor which uses a new ionic liquid (IL) solution as sorptive medium is targeted. To optimise its operative performance, a semi-theoretical model based on a variational thermodynamic principle is developed to predict the film rupture and wetting ability of the IL solution for different values of the IL mass fraction over a comprehensive range of liquid spray density. The minimum Reynolds number Reb allowing the film-like flow configuration and, below this value, the wetted fraction of the solid substrate are firstly formulated on an analytical basis. Successively, the theoretical formulation is used as a reference to minimise deviations between predicted results and measured data by calibrating dedicated characteristic coefficients. Predicted film rupture, wetting ability and wetting hysteresis behaviour are strongly affected by the IL mass fraction and found in good agreement with the measurements.
AB - A new design of an internally cooled desiccant contactor which uses a new ionic liquid (IL) solution as sorptive medium is targeted. To optimise its operative performance, a semi-theoretical model based on a variational thermodynamic principle is developed to predict the film rupture and wetting ability of the IL solution for different values of the IL mass fraction over a comprehensive range of liquid spray density. The minimum Reynolds number Reb allowing the film-like flow configuration and, below this value, the wetted fraction of the solid substrate are firstly formulated on an analytical basis. Successively, the theoretical formulation is used as a reference to minimise deviations between predicted results and measured data by calibrating dedicated characteristic coefficients. Predicted film rupture, wetting ability and wetting hysteresis behaviour are strongly affected by the IL mass fraction and found in good agreement with the measurements.
KW - Ionic Liquid
KW - Liquid Desiccant
KW - Modelling
KW - Wettability
UR - http://www.scopus.com/inward/record.url?scp=85082683832&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85082683832&partnerID=8YFLogxK
U2 - 10.18462/iir.icr.2019.1059
DO - 10.18462/iir.icr.2019.1059
M3 - Conference contribution
AN - SCOPUS:85082683832
T3 - Refrigeration Science and Technology
SP - 4616
EP - 4623
BT - ICR 2019 - 25th IIR International Congress of Refrigeration
A2 - Minea, Vasile
PB - International Institute of Refrigeration
T2 - 25th IIR International Congress of Refrigeration, ICR 2019
Y2 - 24 August 2019 through 30 August 2019
ER -