1. Modeling and analysis of calcium bromide hydrolysis
- Author
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Lottes, Steven A., Lyczkowski, Robert W., Panchal, Chandrakant B., and Doctor, Richard D.
- Subjects
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HYDROLYSIS , *BROMIDES , *HEAT transfer , *HYDROGEN production , *MATHEMATICAL models , *COMPUTATIONAL fluid dynamics , *THERMOCHEMISTRY , *CALCIUM - Abstract
Abstract: The main focus of this paper is the modeling, simulation, and analysis of the calcium bromide hydrolysis reactor stage in the calcium–bromine thermochemical water-splitting cycle for nuclear hydrogen production. One reactor concept is to use a spray of calcium bromide into steam, in which the heat of fusion supplies the heat of reaction. Droplet models were built up in a series of steps incorporating various physical phenomena, including droplet flow, heat transfer, phase change, and reaction, separately. Given the large heat reservoir contained in a pool of molten calcium bromide that allows bubbles to rise easily, using a bubble column reactor for the hydrolysis appears to be a feasible and promising alternative to the spray reactor concept. The two limiting cases of bubble geometry, spherical and spherical-cap, are considered in the modeling. Results for both droplet and bubble modeling with COMSOL MULTIPHYSICS™ are presented, with recommendations for the path forward. [Copyright &y& Elsevier]
- Published
- 2009
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