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Advisor(s)
Abstract(s)
In many regions of the world there are persisting situations of lack of potable water with the well-known consequences in population’s daily life, where a poverty logic loop seems to be definitely installed. In some of those regions, where seawater and solar energy resources are abundant, the use of this kind of energy may be an effective alternative to consider for seawater desalination.
Falling film evaporators allow high heat transfer rates and are an important key to achieve greater efficiencies throughout several industries. Desalination systems, especially when driven by renewable energies, tend to be highly dependent of appropriate efficiencies. In order to study this matter, a meta-heuristic optimization of a desalination model of this kind is done, focusing on some design variables of the evaporator’s geometry. Because of the context of the present work, the achievement of an optimal solution, from the global heat transfer perspective is a particularly important objective. To enable this optimization study, different implementations of bat-inspired optimization technique will be considered, aiming at the minimization and maximization of the falling film heat transfer coefficient, within a desalination model, based on a horizontal falling film evaporator. A parametric study concerning the heat exchangers’ selected design variables will be carried out and discussed, along with an influence analysis ofother optimization parameters.
Description
Keywords
Desalination Heat transfer coefficient Falling film evaporators Bat-inspired optimization Symbolic computation
Citation
COSTA, D. M. S.; TRINDADE, J. M. F.; LOJA, M. A. R. – Optimization of desalination heat exchanger`s geometries using bat-inspired techniques. In SYMCOMP 2015. Faro, Portugal: ECCOMAS, 2015. ISBN 978-989-96264-6-1. Pp. 275-300.