Browsing by Author "Ouragh, Y."

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    Dynamic behaviour of clapper anti-return[Comportement dynamique du clapet anti-retour à battant]
    (Mecanique et Industries, 2002) Nour, Abdelkader; Ouragh, Y.; Tazrouti, H.
    Following the disjunction of a pump, a succession of beats of clapper anti-return were observed. They are frequently followed by large variations of pressure. That can lead to damage along the system. In this paper we present the study of the conditions of appearance of these beats and the analysis of counterbalance effect as one of the possible solutions to this problem. © 2002 Éditions scientifiques et médicales Elsevier SAS. All rights reserved
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    Identification of parameters W0 , n , and D of the Dubinin�Radushkevich equation
    (2003) Nour, Abdelkader; Tazerouti, H.; Ouragh, Y.
    This paper considers a cooling system for a thermal engine using heat from exhaust gas. This system uses a physical adsorption process of solid�gas (active carbon and ammonia). An adsorber tubular element of real scale is submitted to heat flux by electrical air heating, simulating exhaust gas. Temperatures and adsorbed mass are measured. Desorption and adsorption phenomena are described by the Dubinin�Radushkevich model equation, m = W0 [rgr] ( T ) exp[- D ( T? ln ( Ps ( T )/ P )) n ], where W0 , n , and D are parameters characterising the adsorbent�adsorbate couple. These three parameters can be identified from a simple mite method (using data and models) characterising the adsorbent�adsorbate couple chosen