INVESTIGADORES
AGUIRRE Pio Antonio
capítulos de libros
Título:
Hybrid desalination systems: Alternative designs of thermal and membrane processes
Autor/es:
MARIAN MARCOVECCHIO,; SERGIO MUSSATI,; NICOLÁS J. SCENNA; AGUIRRE PIO
Libro:
Computer Aided Chemical Engineering
Editorial:
Elsevier
Referencias:
Año: 2009; p. 1011 - 1016
Resumen:
investigated. Specifically, a hybrid desalination plant integrating reverse osmosis (RO)
and multi stage flash (MSF) systems is mathematically modeled. The non linear
programming problem is developed in order to optimize the configuration and operating
conditions in order to satisfy fresh water demands at minimum costs.
Both implementations, with one and two reverse osmosis stages are considered at the
particular framework RO-MSF adopted. The system is modeled in such a way that the
RO unit receives brine feed from the MSF. In addition, partial extractions of flashing
brine stream from flash chambers of MSF can be performed in order to feed the RO
system. In fact, the flow-patterns and flow-rates of the brine streams of MSF are
optimization variables. Heat transfer areas of pre-heaters and the geometric design of
stages are design variables to be optimized. The optimization procedure will also decide
between one and two RO stages and the number of modules operating in parallel at each
stage. Moreover, all the operative conditions will be optimized.
Different case studies considering various seawater conditions were successfully solved
without convergence difficulties. It can be concluded that the optimal arrangement of
hybrid system depends strongly on the seawater conditions (salinity and temperature)
and the fresh water demand as well.