Browsing by Author "Mokhtar Ghodbane"

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Effect of cover thickness on the yield of a solar distiller under the El oued climate, Algeria
(University of Eloued جامعة الوادي, 2019-02-24) Abderrahmane Khechekhouche; Mohammed El Hadi Attia; Ali Boukhari; Muthu Manokar; Zied Driss; Boubaker Benhaoua; Mokhtar Ghodbane
The wilaya of El Oued (southeastern Algeria) suffers from a huge lack of drinking water, unfortunately the groundwater is sometimes too salty for them considered drinking water. The most economical way to obtain drinking water is solar distillation using free, renewable and non-polluting energy. Improvement of the single-slope solar distiller is a problem addressed by several researchers around the world. This study also aims at this point by the variation of the thickness of the glass (the condenser). Experiments show that the production is better improved when the thickness of the glazing is low e = 3 mm with a total production of 2313.2 ml /m2.d; when e = 5 mm the production is 1876 ml / m2.d and at the end when e = 6 mm the production is 1236 ml / m2.d. From these results can be said that any increase in thickness will be followed by a decrease in the productivity of distilled water.
Evaluate the effect of changing climatic conditions on the optical and thermal performance of a linear solar collector
(university Of Eloued جامعة الوادي, 2020-02-23) Mokhtar Ghodbane; Boussad Boumeddane; Abderrahmane Khechekhouche
One of the main axes adopted by the Algerian state is the work to develop renewable energy technologies, especially solar energy, in regions with a large abundance of solar radiation. Through this study, the optical and thermal behavior of a linear Fresnel solar reflector was studied. This technology has been used as a device to produce superheated steam. The energy balance equations were analyzed and then programmed on the Matlab to obtain the results. The finite differences method has been used to simplify and approximate equations. El-Oued's desert climate region was chosen for the study. Four different days of the year have been chosen for this study. The optical efficacy identified by this study has reached 53.60%, where the thermal efficiency is equal to 37.3%. The average values of overall coefficient of heat loss “UL, (W/m².K)” was limited between 5.71837 (W/m².K) and 5.98112 (W/m².K). With regard to superheated steam, the temperature in December reached 500.9913 (K), where this is the lowest value recorded during the study. The results obtained are very encouraging to invest in electric plants that produce superheated steam by this linear collector
Study of Optical and Thermal Behavior of Linear Fresnel Solar Reflector in Desert Climate Zone
(Universty Of El-oued جامعة الوادي, 2019-02-24) Mokhtar Ghodbane; Boussad Boumeddane; Abderrahmane Khechekhouche
— the use of solar energy that is available throughout our country Algeria is the main objective of this study. There are several uses of solar energy, through which the superheated steam can be obtained for the direct production of electricity. Through this study, the optical and thermal behavior of a linear Fresnel solar reflector (LFR) was studied. This linear device has been used as a tool to produce superheated steam. The energy balance equations were analyzed and then programmed on the MATLAB to obtain the results. The method of finite differences has been used to simplify and approximate equations. El-Oued's desert climate region was chosen for the study. Four different days of the year have been chosen for this study. The optical efficacy identified by this study has reached 53.60%, where the thermal efficiency is equal to 37.3%. The average values of overall coefficient of heat loss “UL, (W/m².K)” was limited between 5.71837 (W/m².K) and 5.98112 (W/m².K). With regard to superheated steam, the temperature in December reached 500.9913 (K), where this is the lowest value recorded during the study. The results obtained are very encouraging to invest in electric plants that produce superheated steam by the linear Fresnel solar reflector.