Hybridization of a reversal multistage flash (MSFRV) and multi-effect evaporators (MEE) purification methods is investigated. A waste heat source is employed to drive the hybrid system while the thermal energy of the MSFRV reject brine is utilized as a sensible heat supply to the MEE process. The hybrid configuration recorded 561%, 91%, and 83% improvement in the recovery ratio, the specific energy consumption, and the gain output ratio. The recovery ratio, normalized heat transfer area, levelized energy consumption, and gain output ratio were found to enhance correspondingly with the feed temperature, and the temperature change across the MEE sensible heat supplier. The best proposed hybrid configurations belong to the one with booster units that produce additional vapor. The superiority of this structure is not only due to the elevated production rate but also to the efficient utilization of the internal energy instead of incurring additional heat exchanger or external cooling water. The exergy analysis indicated that the hybrid system without boosters is the most efficient structure in the sense of lowest exergy destruction and highest exergy efficiency. Indeed, it exhibits around 32% less exergy losses and about 17% higher exergy efficiency.

Hybridization of a reversal multistage flash (MSFRV) and multi-effect evaporators (MEE) purification methods is investigated. A waste heat source is employed to drive the hybrid system while the thermal energy of the MSFRV reject brine is utilized as a sensible heat supply to the MEE process. The hybrid configuration recorded 561%, 91%, and 83% improvement in the recovery ratio, the specific energy consumption, and the gain output ratio. The recovery ratio, normalized heat transfer area, levelized energy consumption, and gain output ratio were found to enhance correspondingly with the feed temperature, and the temperature change across the MEE sensible heat supplier. The best proposed hybrid configurations belong to the one with booster units that produce additional vapor. The superiority of this structure is not only due to the elevated production rate but also to the efficient utilization of the internal energy instead of incurring additional heat exchanger or external cooling water. The exergy analysis indicated that the hybrid system without boosters is the most efficient structure in the sense of lowest exergy destruction and highest exergy efficiency. Indeed, it exhibits around 32% less exergy losses and about 17% higher exergy efficiency.

Water desalination reverse multistage flash Muli effect evaporator hybridization waste energy