University of Khartoum

Browsing Staff Publication by Author "Rabah, Ali A."

Browsing Staff Publication by Author "Rabah, Ali A."

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  • Rabah, Ali A.; Sumya A. Mohamed (University of Khartoum, )
    The objective of this work is to provide analytical solution of the conservation equations governing the desiccant wheel. The conservation equations describing the moisture exchange between wheel matrix and airflows are ...
  • Rabah, Ali A. (University of Khartoum, )
    This work presents two developments in Antoine vapor pressure correlation: (1) Generalization of the correlation using the principle of corresponding state; (2) Prediction of the Antoine coefficients form molecular weight. ...
  • Rabah, Ali A. (University of Khartoum, )
    This work aims to measure the emission level of local heavy fuel oils used in boilers and furnaces. Two types of fuel oil are commonly used in the Sudan. These are heavy fuel oil (HFO) produced in Elobied refinery and heavy ...
  • Rabah, Ali A.; T.E.Mahmoud; Saphwan Alassaf (University of Khartoum, )
  • Khalel, Zeinab A. M.; Rabah, Ali A.; Barakat, Taj Alasfia M. (UOFK, 2015-12-28)
    The objective of this work is to provide exergy analysis of the newly developed cryogenic air separation unit with flash separator. As a reference, exergy analysis to the conventional double column air separation process ...
  • Abdalla, Kamal Nasreldin; Rabah, Ali A.; Kisha, Wigdan M H (University of Khartoum, )
    Desiccant cooling systems have the potential to make a major contribution to the reduction of both CFC’s emissions and electricity peak load. An experimental investigation on the sensible effectiveness of a desiccant ...
  • Rabah, Ali A. (University of Khartoum, )
    Die vorliegende Arbeit entstand w¨ahrend meiner T¨atigkeit als wissenschaftlicher Mitarbeiter am Institut f¨ur Thermodynamik der Universit¨at Hannover. Herrn Professor Dr.-Ing. S. Kabelac, dem ehemaligen Institutsleiter ...
  • Rabah, Ali A. (University of Khartoum, )
    This work investigated the influence of airflow leakage on the regenerator performance factors of effectiveness (ε), airflow capacity (C*), matrix capacity (Cr*) and number of transfer unit (NTU). A sophisticated experimental ...
  • Khalel, Zeinab A. M.; Rabah, Ali A.; Barakat, Taj Alasfia M. (UOFK, 2015-12-28)
    A new cryogenic air separation process with flash separator is developed. A flash separator is added to the conventional doublecolumn cryogenic air separation process. The flash separator is used to replace the turbine ...
  • Rabah, Ali A. (University of Khartoum, )
    A new cryogenic air separation process with flash separator is developed. A flash separator is added to the conventional doublecolumn cryogenic air separation process. The flash separator is used to replace the turbine ...
  • Rabah, Ali A. (University of Khartoum, )
    A new three parameter Equation Of State (EOS) is developed based on well documented data, at three thermodynamic states of the critical point, the normal bubble point and standard condition. Besides these states, the EOS ...
  • Rabah, Ali A. (University of Khartoum, )
    This paper presents the operational conditions for wax production from Nile Blend; a Sudanese oil, characterized as sweet oil with a high level of wax content (25.87 wt%). The method of solvent extraction was employed ...
  • Rabah, Ali A. (University of Khartoum, )
    The potential use of polyaluminum chloride (PAC) on destabilizing oil-water emulsions was investigated. The phase separation for emulsions with different water cuts ranging from (10 to 60) % was studied. A wide range of ...
  • Rabah, Ali A. (University of Khartoum, )
    The objective of this work is to characterize the local bentonite and evaluate its potential use as a drilling fluid. Samples of bentonite deposit from “Om Ali, River Nile State, Sudan” are collected. The samples are ...
  • Rabah, Ali A. (University of Khartoum, )
    The objective of this study is to provide rheological data of Acacia senegal (A. senegal) gum of Kordofan origin. The density of A. senegal gum at room temperature is found to be higher than that of water only at higher ...
  • Rabah, Ali A. (University of Khartoum, )
    Oil refining is one of the most complex chemical industries; the objective of refinery operations is to generate as much profit as possible by converting crude oils into valuable products. The current trend toward ...
  • Rabah, Ali A. (University of Khartoum, )
  • Rabah, Ali A. (University of Khartoum, )
    الهدف من الورقه تسليط الضوء على عنق الزجاجة بالنسبة لصناعة السكر السودانية المتمثل فى التوليد المشترك للطاقة الكهربائية والحرارية. على الرغم من النجاحات التي حققتها صناعة السكر السودانية المتمثلة فى الاستدامته (sustainability) ...

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