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M.A. Hassab

Bio: M.A. Hassab is an academic researcher from Alexandria University. The author has contributed to research in topics: Prandtl number & Nusselt number. The author has an hindex of 9, co-authored 38 publications receiving 290 citations. Previous affiliations of M.A. Hassab include Qatar Airways & Qatar University.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a numerical study for laminar natural convection inside a square enclosure with a single horizontal fin attached to its hot wall has been carried out The enclosure horizontal surfaces are adiabatic, the left wall is hot while the right one is cold The Prandtl number for the flow inside the enclosure is 071.

90 citations

Journal ArticleDOI
TL;DR: In this article, a detailed numerical model of a two-bed adsorption chiller was developed to examine the effects of operating and geometrical parameters on its overall performance, where the condenser and evaporator are considered non-ideal in the present model.

33 citations

Journal ArticleDOI
01 Sep 2014-Energy
TL;DR: In this paper, an innovative correlation associating the effectiveness of the cooling tower with its number of transfer unit (NTU) and vice versa is presented, which can be used simply to predict the performance of wet counterflow cooling tower.

29 citations

Journal ArticleDOI
TL;DR: In this article, a numerical model for melting of wax in a vertical cylinder is presented, which does not simulate the volumetric expansion of wax during the melting process, an average value of actual solid and liquid density was used as a model density for liquid and solid phase like most previous works made, and this is called as approach-I.

28 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented a numerical investigation and experimental validation of the melting process of phase change material (PCM) in a double-pipe latent heat storage unit (LHSU) at different inclinations.
Abstract: This paper presents a numerical investigation and experimental validation of the melting process of phase change material (PCM) in a double-pipe latent heat storage unit (LHSU) at different inclinations. The aim of this paper is determining the optimal inclination angle at different PCM thicknesses for the melting process in the double-pipe LHSU. The PCM is placed in the annulus while hot water flows through the inner tube. ANSYS-FLUENT 17 is used to create a transient multi-phase numerical model to simulate the thermal characteristic of the storage unit. Three masses of PCM have been numerically studied; namely 0.154, 0.308, and 0.46 kg which presents three PCM annulus thicknesses of 7, 11.28, and 14.5 mm. The length of the double-pipe LHSU is 500mm and the inclination angles are 0 , 15 , 30 , 45 , 60 , 75 , and 90 . The numerical model has been verified through the comparison between its predicted results and those obtained from previous experimental published work. In addition, the comparison between the present experimental and numerical results shows good agreement. It has been found that the inclination of the storage unit has a significant effect on the melting behavior when the thickness of PCM is enough such that natural convection contributes to the melting process. For this condition, 45 degrees was the optimum inclination angle. Conversely, for thin PCM thickness, the horizontal orientation produced the least total melting time.

23 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, a review of current and past studies to assess the optical and thermal performances of parabolic trough solar collectors, modeling approaches and the potential improvements proposed on behalf of the parabolic-trough solar collector design is presented.

206 citations

Journal ArticleDOI
TL;DR: In this article, a double-pass solar collector with porous media in the lower channel provides a higher outlet temperature compared to the conventional single-pass collector, therefore, the thermal efficiency of the solar collector is higher.

187 citations

Journal ArticleDOI
TL;DR: In this paper, the numerical results of the comparative and sensitive analysis for different parabolic trough solar collector (PTC) systems under different operating conditions, expected to optimize the PTC system of better comprehensive characteristics and optical performance or to evaluate the accuracy required for future constructions.

161 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of magnetic field on the natural convection of Al2O3-water nanofluid inside a square enclosure with isothermal obstacles and sinusoidal wall temperature distribution has been numerically studied.

134 citations