Browsing by Author "Ouahrani, Djamel"
Now showing items 1-11 of 11
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Cooling vest with optimized PCM arrangement targeting torso sensitive areas that trigger comfort when cooled for improving human comfort in hot conditions
Itani, Mariam; Ghaddar, Nesreen; Ghali, Kamel; Ouahrani, Djamel; Chakroun, Wali ( Elsevier Ltd , 2017 , Article)The objective of this work is to optimize the arrangement of Phase Change Material (PCM) packets in a cooling vest by targeting torso segments that can trigger comfort when cooled. An integrated fabric-PCM and bio-heat ... -
Effect of PCM packet mass and melting temperature on cooling vest performance
Itani, Mariam; Ghaddar, Nesreen; Ghali, Kamel; Ouahrani, Djamel; Chakroun, Walid ( ASHRAE , 2016 , Conference Paper)Workers in hot environment experience high heat stresses that affect their productivity and working intervals. A cooling vest containing phase change material packets (PCMs) is used as a passive body cooling method to ... -
Experimental analysis of double and triple glazed facades with different shading devices in Qatar
Al Touma, Albert; Ouahrani, Djamel ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)The design of fully-glazed facades on buildings has become very popular, especially in hot regions where the use of natural ventilation is not recommended. The integration of shading devices to facade surfaces has been ... -
Experimental study on effective placement of PCM packets in cooling vest to improve performance in warm environment
Itani, Mariam; Ghaddar, Nesreen; Ghali, Kamel; Khater, Beatrice; Ouahrani, Djamel; Chakroun, Walid... more authors ... less authors ( American Society of Mechanical Engineers , 2017 , Conference Paper)Global warming has increased the risk of heat stress of outdoor workers and one measure against heat stress is wearing passive personal cooling clothing. Passive body cooling systems, including phase change material (PCM) ... -
Experimental study on using PCMs of different melting temperatures in one cooling vest to reduce its weight and improve comfort
Ouahrani, Djamel; Itani, Mariam; Ghaddar, Nesreen; Ghali, Kamel; Khater, Beatrice ( Elsevier Ltd , 2017 , Article)This study aims at evaluating experimentally phase change material (PCM) cooling vest performance when incorporating two types of PCM with different melting temperatures with varied PCM placement on the lower, upper, front ... -
Mathematical modeling of PCM cooling vest for workers in hot climates
Itani, Mariam; Ghaddar, Nesreen; Ouahrani, Djamel; Ghali, Kamel; Chakroun, Walid ( American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE , 2016 , Conference Paper)A cooling vest containing phase change materials (PCM) made of salt mixtures that melts at a specific temperature helps in maintaining the skin temperature of the covered parts at a comfortable level. A dynamic thermal ... -
PCM cooling vest for improving thermal comfort in hot environment
Hamdan, Haneen; Ghaddar, Nesreen; Ouahrani, Djamel; Ghali, Kamel; Itani, M. ( Elsevier Masson s.r.l. , 2016 , Article)A cooling vest containing phase change materials (PCM) can help in maintaining the skin temperature of the covered parts at a comfortable level. A transient mathematical model of heat and mass transfer through clothing ... -
Shading and day-lighting controls energy savings in offices with fully-Glazed façades in hot climates
Touma, Albert Al; Ouahrani, Djamel ( Elsevier Ltd , 2017 , Article)Shading devices installed on windows are designed to reduce solar radiation transmission into the space by absorbing and reflecting radiation rays. This study investigates the effect of shading and day-lighting controls ... -
SUSTAINABILITY PRACTICES IN FACILITY MANAGEMENT
Abdoh, Shorook Bassam (2017 , Master Thesis)Facilities management (FM) has witnessed a pragmatic growth and its importance has increased parallel to the expansion of the construction sector. Meanwhile, the concept of sustainability is being established and is ... -
The effect of PCM placement on torso cooling vest for an active human in hot environment
Itani, Mariam; Ouahrani, Djamel; Ghaddar, Nesreen; Ghali, Kamel; Chakroun, Walid ( Elsevier Ltd , 2016 , Article)The distribution of phase change material (PCM) packets on a cooling vest worn by active human in hot environments is investigated using an integrated fabric-PCM and bio-heat model. The model considered the effect of added ... -
URBAN FORM AND MOBILITY ANALYSIS IN SUSTAINABLE CITIES: THE CASE OF MARINA DISTRICT, LUSAIL CITY
ELLATH, LABEEB ALI (06-2 , Master Thesis)Global urbanization has undergone massive developments in finding the right city standards through various concepts. Middle Eastern cities are no farther away in the era of urbanization as the region is experiencing a ...