Papers by Abdulwahid Al-Hajjaj
A basin type –inverted V- transparent polyethylene cover solar still with an internal heater havi... more A basin type –inverted V- transparent polyethylene cover solar still with an internal heater having an effective base area of 2m 2 has been constructed and operated in Al-Zubair semi arid zone. The unit was scheduled to provide fresh water from groundwater having average total dissolved salts of 5000 ppm. An experimental study was carried out to evaluate the effect of using an internal heater on the performance of the still. The effects of climatic and continuous day and night modes have been investigated and the effects of these conditions on the production rate of distillate have also been presented. The results showed that combining an internal heater with basin type solar still caused a much higher yield than that of the simple solar still.
Crude Distillation Units are key process plants in a petroleum refinery as they produce intermedi... more Crude Distillation Units are key process plants in a petroleum refinery as they produce intermediate streams that are used in downstream process units. In fact, the crude oil separation is a complex atmospheric multi-components distillation process. The process complexity is arise mostly from the large number of components in the crude oil. An existing crude distillation unit is costly to modify due its complex configuration and existing limitations of structure, space area, matches, bottlenecked equipments, etc. Thus, a few new crude distillation units are built and most projects are directed to revamping existing equipments. Modifying an existing plant have a great impact on product yield and quality through operating these units at optimal conditions from technical and economical aspects; that means operating conditions such as temperatures, pressures and flows of the units that maximize their economic performance (increasing product yield), subject to their real physical restric...
Journal of Saudi Chemical Society, 2010
Nanocomposite materials have been used on a wide scale in industrial and structural applications.... more Nanocomposite materials have been used on a wide scale in industrial and structural applications. The present work aims at studying the mechanical properties of high density polyethylene (HDPE) grade TR-401 hexene copolymer reinforced by montmorillonite nanoparticles (MMT), used to fabricate pipes and membranes vessels for reverse osmosis desalination plants. Different volume fractions and particle sizes of the MMT clay were
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Papers by Abdulwahid Al-Hajjaj