تصفح حسب المؤلف "Ouahrani, Djamel"
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The application of control algorithm for optimal performance of evaporatively-cooled façade system in hot dry and humid weathers
Albert, Al Touma; Ouahrani, Djamel ( Elsevier , 2021 , Article)An evaporatively-cooled façade system, composed of a Photovoltaic thermal (PVT), evaporative cooler, and evaporatively-cooled façade, was previously developed. In this study, a control algorithm for the system parameters ... -
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 ... -
A comprehensive optimization study of personal cooling radiant desks integrated to HVAC system for energy efficiency and thermal comfort in office buildings
Nagham, Ismail; Ouahrani, Djamel ( Elsevier , 2023 , Article)Personal comfort systems (PCS) maintain the occupant's preferred thermal environment and expand his thermal comfort experience under varying environmental conditions. Among PCSs, radiant-based systems are popular due to ... -
Improving comfort and productivity of workers at moderate activity and hot environment by means of a PCM cooling vest
Itani, Mariam; Ouahrani, Djamel; Ghaddar, Nesreen; Chakroun, Walid; Ghali, Kamel ( American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE , 2017 , Conference Paper)The effect of using a phase change material (PCM) cooling vest by a worker performing moderate activity in a hot environment is studied through the use of a validated integrated fabric-PCM and bio-heat model. The integrated ... -
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 ... -
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 ... -
Modelling of cooling radiant cubicle for an office room to test cooling performance, thermal comfort and energy savings in hot climates
Nagham, Ismail; Ouahrani, Djamel ( Elsevier , 2022 , Article)The building industry challenges have led researchers to develop a personalized conditioning system aiming to create a microclimate comfort zone around the occupant. Radiant cooling become prevalent due to their potential ... -
Performance assessment of evaporatively-cooled window driven by solar chimney in hot and humid climates
Albert, Al Touma; Ouahrani, Djamel ( Elsevier Ltd , 2018 , Article)This study investigates the application of the evaporatively-cooled window system in hot and humid climates and assesses its seasonal performance and benefits in terms of energy savings. The validated system is a hybrid ... -
Quantifying savings in spaces energy demands and CO2 emissions by shading and lighting controls in the Arabian Gulf
Albert Al, Touma; Ouahrani, Djamel ( Elsevier , 2018 , Article)Despite the deceleration in worldwide annual energy consumption and CO2 emissions, many countries, such as in the Arabian Gulf, are still unarguably far from following this international trend. This study investigates the ... -
A sustainable localised air distribution system for enhancing thermal environment and indoor air quality of poultry house for semiarid region
Al Assaad, Douaa K.; Orabi, Mohamad S.; Ghaddar, Nesreen K.; Ghali, Kamel F.; Salam, Darine A.; Ouahrani, Djamel; Farran, Mohamad T.; Habib, Rima R.... more authors ... less authors ( Academic Press , 2021 , Article)This work compares the performance of three passive cooling systems in meeting thermal and indoor air quality requirements in a poultry house located in semi-arid climate. The first two systems are a direct evaporative ... -
Sustainable Poultry house ventilation using Dew point indirect evaporative cooler aided with radiative cooling
Al-Assaad, Douaa; Ghaddar, Nesreen; Ghali, Kamel; Ouahrani, Djamel ( American Society of Mechanical Engineers (ASME) , 2021 , Conference Paper)Maintaining good production quality in layer poultry houses is directly correlated to the thermal environment of the laying hens as well as their breathable air quality. This work compares the performance of two passive ...