Browsing by Author "MEHDID, Charaf-eddine"

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    Experimental performance of a direct evaporative cooler during summer in Biskra region
    (University of Eloued جامعة الوادي, 2018-12-10) Sadam Houcine SELLAM; MOUMMI, Abdelhafid; BENCHABANE, Adel; MEHDID, Charaf-eddine; BEN MACHICHE, Abdelmoumen Hakim
    This paper presents the experimental effect of the ambient conditions (relative humidity and temperature), air mass flow and operating time on the thermal performance of direct evaporative cooler (DEC). The set up is installed in Biskra region (34°47’N - 005°43’E) characterized by semi-arid and hot climate. The results showed that the efficiency decreases with increasing the air mass flows for eight hours of continuous functioning when the air mass flow ranged between 0.165 and 0.386 kg/s, and a reduction of the experimental heat exchange rate with decreasing of the ambient temperature and increasing ambient relative humidity.
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    Thermal Performance Analysis of Biskra’s Earth-to-Air Heat Exchanger (EAHE)
    (University of Eloued جامعة الوادي, 2018-12-10) MEHDID, Charaf-eddine; Benchabane, Adel; MOUMMI, Noureddine; SELLAM, Sadam Houcine; MOUMMI, Abdelhafid; MELHEGUEG, Mohammed Amin; ROUAG, Amar
    This paper deals with the experimental effect of air mass flow and operating time on the thermal performance of horizontal earth-to-air heat exchanger (EAHE). The set up is installed in Biskra region (34°47’N - 005°43’E) characterized by semi-arid and hot climate. The results showed that the first twenty meters, the quantity of heat transferred is about seventy percent (70%) of the total heat exchange. Moreover, the energy efficiency and performance coefficient decreased by 30 % and 43% respectively when the air mass flow ranged between 0.038 and 0.054 kg/s. Likewise, a reduction of 22% in efficiency for six hours of continuous functioning for air mass flow equal to 0.038 kg/s.