High vacuum multiple effect desalination system with barometric ejector condensation

摘要: In order to search for new desalination technologies to meet the growing water needs, this paper presents a parametric study of a novel, high-vacuum multiple-effect desalination system with barometric ejector-condensation activated with solar thermal energy, to demonstrate its technical feasibility. Aspen Plus simulation software was used for the parametric study, which was validated with the results reported in the literature. The high-vacuum multiple-effect distillation system has 14 effects, Top Brine Temperature of 68 °C and produces 96,033.6 L/d of water. The increase in the range of the pressure cascade (28.6–0.8 kPa), as well as of the temperature (68–4 °C), increases the capacity and efficiency of the desalination system. This is possible due to the implementation of an ejector that pumps, drags, and compresses vapor at 4 °C from the last effect of the system in order to condense it. In comparison to a …