: Reviewers note that the fundamentals of unit operations (evaporators, condensers) discussed are also applicable to other sectors like wastewater treatment, food processing, and petroleum.
In Fundamentals of Salt Water Desalination , El-Dessouky demystifies these processes. The book does not simply describe how an MSF plant works; it explains why it works through the lens of energy balances and entropy.
– El-Dessouky stresses that a temperature difference of at least 2–3°C must exist between the flashing brine and the cooling water in the condenser for heat transfer to occur. If this "cross" drops below 1.5°C, the plant scales and fails. Fundamentals Of Salt Water Desalination By H T El Dessouky
Published by Elsevier Science, this masterpiece is not merely a collection of formulas; it is a rigorous, data-driven systems analysis of how to turn brine into beverage. This article unpacks the core fundamentals as laid out by El-Dessouky, breaking down the thermodynamics, the critical processes (MSF, MED, RO), and the practical design equations that have shaped modern desalination plants from the Gulf to California.
Unlike theoretical texts that stop at equations, this book provides empirical correlations validated against industrial data. For example: : Reviewers note that the fundamentals of unit
At its core, the work addresses the urgent global need for sustainable water sources. As natural freshwater reserves dwindle, the ability to efficiently remove salts and minerals from seawater has become a cornerstone of modern infrastructure, particularly in arid regions like the Middle East. El-Dessouky’s approach is rigorous, focusing on the mathematical modeling and design of large-scale systems.
El-Dessouky’s warning: The concentration of salt at the membrane surface ((C_m)) is always higher than in the bulk feed ((C_b)). The ratio (C_m / C_b) is the polarization modulus. If this exceeds 1.2, scaling of CaCO₃ or CaSO₄ occurs. If it exceeds 1.4, you get gel-layer formation. The book provides the film theory equation: [ 1.2 = \exp\left(\fracJ_wk\right) ] Where (k) is the mass transfer coefficient. Engineers use this to set the maximum allowable water flux (J_w max). – El-Dessouky stresses that a temperature difference of
| Feature | El-Dessouky & Ettouney | Spiegler & El-Sayed (Desalination) | Micale & Cipollina (Seawater Desalination) | |--------|------------------------|--------------------------------------|---------------------------------------------| | | Thermal process modeling | Thermodynamic foundations | Renewable energy & membrane hybrid systems | | Depth on MSF/MED | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ | | Depth on RO | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | | Mathematical rigor | High | Very High | Moderate | | Industrial data validation | Excellent | Moderate | Good | | Publication year relevance | Needs update | Very old (1970s) | More recent (2010s) |