Two-phase bubble flow and convective mass transfer in water splitting processes

Naterer, Greg F. and Jianu, O. A. and Rosen, M. A. and Wang, Zhaolin (2015) Two-phase bubble flow and convective mass transfer in water splitting processes. International Journal of Hydrogen Energy, 40 (11). pp. 4047-4055. ISSN 0360-3199

[img] [English] PDF (The version available in this research repository is a postprint. It has the same peer-reviewed content as the published version, but lacks publisher layout and branding.) - Accepted Version
Available under License Creative Commons Attribution Non-commercial.

Download (459kB)


When hydrogen or oxygen is produced from water splitting by electrolysis, thermochemical cycles or solar-based photocatalytic methods, bubble flow and vapor transfer into the gas phase occur during phase transition. This undesirable vapor transfer requires the use of more energy input to compensate for the evaporation heat requirement as well as for subsequent gas purification in the downstream unit. In this paper, both experimental and modeling studies are performed to examine the dynamics of bubble flows and kinetics of water vapor transfer, particularly related to processes of hydrogen production. Experimental data are obtained using an advanced laser-based shadow imaging system and on-line vapor monitoring system. The bubble dynamics and water vapor transfer kinetics are modeled with non-dimensional parameters involving the bubble diameter, velocity and trajectories so that the water vapor transfer rate can be quantified under different operating conditions for various hydrogen production methods. Also, a predictive model is developed to simulate the physical processes of bubble transport in a vertical liquid column, as it occurs in water splitting processes such as oxygen generation in the thermochemical copper–chlorine cycle, as well as hydrogen generation in electrolytic and photocatalytic processes.

Item Type: Article
Item ID: 13440
Keywords: Hydrogen production, Mass transfer, Bubble dynamics
Department(s): Engineering and Applied Science, Faculty of
Date: 22 March 2015
Date Type: Publication
Related URLs:

Actions (login required)

View Item View Item


Downloads per month over the past year

View more statistics