Abstract
This paper deals with the design of a solar thermal desalination system based on a multi-effect distillation (MED) plant connected to a double-effect absorption heat pump (DEAHP). To date, the only two demonstration projects employing this technology worldwide have been implemented at the PSA (Almería, Spain). Two different prototypes of a DEAHP (LiBr–H 2O), manufactured by the French company ENTROPIE, were connected to an existing multi-effect distillation unit (nominal PR 10.5) in 1991 and 2005, respectively. This paper presents the first experimentally validated design proposal for a solar desalination system based on MED-DEAHP technology. The overall performance ratio, experimentally measured at the Plataforma Solar de Almería test facilities, was 20, which results in a 50% of reduction of the required solar field area compared to a solar MED system.
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