Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / Schematic of the capillary tube experimental setup Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / Variation of mass transfer coefficient k L versus time for different nanoparticles. In all cases, the experiment was repeated at least twice, and the error bars show the maximum variation among the replicates. Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / A linear variation of the change in the length of the gas slug with t. The filled symbols are calculated from the model developed in this work and are discussed toward the end. Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / E p experimental versus E p predicted using correlation proposed in previous work [10] Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / Enlarged view of the interface Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / Graph of experimental enhancement versus enhancement predicted. The dotted lines are drawn for ±15% deviation. CAP— experiments in capillary tube apparatus; WWC—wetted wall column; MDEA—methyl diethanolamine is used as solvent for absorption (water is used as solvent for all other cases); Poly—polymer stabilized and TMAOH—tetra methyl ammonium hydroxide stabilized nanoparticles. Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / Figure showing particle size distribution of silica nanoparticles Figure Legend:

Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Enhanced Mass Transfer Rates in Nanofluids: Experiments and Modeling J. Heat Transfer. 2015;137(9): doi: / Figure showing lognormal particles size distribution of TiO 2 nanoparticles (provided by Professor P. Biswas, Washington University in St. Louis) Figure Legend: