تصفح حسب المؤلف "Ghaddar, Nesreen"
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Comparative analysis of sustainable desiccant – Evaporative based ventilation systems for a typical Qatari poultry house
Jean Paul, Harrouz; Katramiz, Elvire; Ghali, Kamel; Ouahrani, Djamel; Ghaddar, Nesreen ( Elsevier Ltd , 2021 , Article)Direct evaporative cooling is the typically adopted ventilation system in poultry houses in hot climates. This type of cooling is inefficient during period of relatively high humidity resulting in degraded thermal comfort ... -
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 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 ... -
Life cycle assessment of desiccant – Dew point evaporative cooling systems with water reclamation for poultry houses in hot and humid climate
Jean Paul, Harrouz; Katramiz, Elvire; Ghali, Kamel; Ouahrani, Djamel; Ghaddar, Nesreen ( Elsevier , 2022 , Article)Desiccant – dew point evaporative based cooling systems is known to be an effective system for the ventilation and cooling of poultry houses in hot and humid climates. However, they suffer from high water consumption that ... -
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 ... -
Modeling and optimization of poultry house passive cooling strategies in semiarid climates
Harrouz, Jean Paul; Al Assaad, Douaa; Orabi, Mohamad; Ghali, Kamel; Ouahrani, Djamel; Ghaddar, Nesreen... more authors ... less authors ( Elsevier Ltd , 2021 , Article)Meeting hygrothermal and air quality requirements in livestock dwellings is crucial for upholding production quality standards. However, ventilation and air-conditioning in such enclosures is very energy-intensive, especially ... -
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 ... -
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 ...