Executive Summary

							Executive Summary
Desalination technology has been extensively developed over the past fifty years to
the extent that it is routinely considered and reliably used to produce fresh water from
saline sources. This has effectively made the use of saline waters for water resource
development possible. The best desalination system should be more than
economically reasonable. It should also work when it is installed and continue to work
and deliver suitable amounts of fresh water at the expected quantity, quality and cost
for the life of project. In the last semester, the objective was to study, model, simulate
and analyze multiple Multi-Stage Flash desalination processes that have a constant
production rate.

The pervious project started by studying descriptions of Single Stage Flash and
different Multi Stage Flash processes. Then, these processes were re-modeled with
suitable assumptions and acceptable simplification. Then, the models were simulated
using visual Basic. This semester, the simulated processes were used in comparing the
advantages and limitations of various MSF desalination designs. This type of
comparative analysis helped selecting the best process according to different sensitive
parameters such as performance ratio and cost study which is the Brine Recirculation
(BR) process. Finally, a complete design study was performed for the BR MSF
process along with cost estimation, environmental, and HAZOP studies