Abstract
This work describes a steady state mathematical model of Multistage Flash (MSF) desalination process incorporating correlations which take into account the effect of the presence of non-condensable gases (NCGs) and fouling factors on the overall heat transfer coefficient. First, we study the effect of different NCGs concentration on the overall heat transfer co-efficient. The simulation results showed decrease in the overall heat transfer coefficient values as NCGs concentrations increase. For a given plant configuration (fixed design) and at different seawater and steam temperatures, a 0.015 wt % of NCGs results in significantly different plant operations when compared with those obtained without the presence of NCGs. Finally, for fixed water demand and in the presence of 0.015 wt % NCGs, the performance is evaluated for different plant configurations and seawater temperature and compared with those obtained without the presence of NCGs.
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