ASHDOD multi-effect low temperature desalination plant report on year of operation

New Trend in the Development of ME-TVC Desalination System

“…Since most ME-TVC plants operate with low top brine temperature (TBT) (not exceeding 75°C) so as to avoid scale formation and corrosion troubles (Al-shammiri & Safar, 1999). The TBT of 76 °C is set here for the upper limit while the lower limit is assumed to be 56 °C (Fisher et al, 1985). The discharged steam temperature T d is considered to be the hot end temperature of the unit and it is limited by the compression ratio of the steam jet ejector, usually 3 to 5°C above the allowable top brine temperature.…”

Low temperature flash vaporization for desalination

“…The multi-effect distillation process, despite the heat recovery, is still energy intensive and there is an urgent need to evolve means for producing fresh water at lower energy levels. Flash vaporizing multieffect distillation processes are less energy demanding and are described by Fisher et al [3]. Here the vaporization is effected at low temperatures and pressures in evaporator tubes using steam.…”

“…Here the vaporization is effected at low temperatures and pressures in evaporator tubes using steam. In the Ashdod plant [3], hot water from a turbine condenser is circulated through the flash evaporation chamber. The vapor is passed through the tubes of the first effect where it condenses giving up its latent heat to warm up the feed water flowing over the tubes.…”