Browsing by Author "Al-Ammari, Wahib A."
Now showing items 21-30 of 30
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Novel solar driven cooling system integrated with solar still system
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( Qatar University Press , 2020 , Poster)Novel integrated solar cooling and solar distillation system is introduced to meet the high cooling and fresh water demands in hot and arid regions such as Qatar. The system is composed of a solar-driven ejector cooling ... -
A novel solar integrated distillation and cooling system – Design and analysis
Ahmad K., Sleiti; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( Elsevier , 2020 , Article)To meet the high cooling and fresh water demands in hot and arid regions, a novel integrated solar cooling and solar distillation system is introduced. The system consists of a solar ejector cooling system integrated with ... -
Off-design performance analysis of combined CSP power and direct oxy-combustion supercritical carbon dioxide cycles
Ahmad K., Sleiti; Al-Ammari, Wahib A. ( Elsevier , 2021 , Article)The solar power tower (SPT) has the potential to achieve high efficiency and large-scale power production due to its high achievable temperatures. However, thermal energy storage (TES) is required to solve the intermittency ... -
Review of innovative approaches of thermo-mechanical refrigeration systems using low grade heat
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( Hindawi , 2020 , Article)Cooling and refrigeration systems consume around 17% of the world-wide electricity. Enhancing the performance of these systems, using renewable energy resources and waste heat recovered from industrial processes, will lead ... -
Study of recirculating water-based and carbon-based working fluids on the combustion flow field and the cycle performances of semi-closed CO2-capturing Brayton-derived cycles
José Francisco, González Álvarez; Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Alonso Fernández, Efrén ( Elsevier , 2022 , Article)The transition into new power technologies that utilize fossil fuels with near zero emissions to the ambient is an urgent need to mitigate the worldwide environmental problems. In this study, detailed analyses of carbon-based ... -
Supercritical Carbon Dioxide Power Cycle Integrated with Solar Power Tower and Oxy-Combustor
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Gamil, Ahmed I.; Al-Khawaja, Mohammed (2021 , Conference Paper)Power cycle that integrates solar power tower (SPT) system with direct oxy-combustion (DOC) supercritical CO2 cycle is proposed and investigated. In the SPT/DOC-sCO2 cycle (Cyc 3), the SPT works as preheater for the DOC/sCO2 ... -
Systematic thermodynamic approach for designing mixed refrigerants used in hydrogen precooling process
Ahmad K., Sleiti; Al-Ammari, Wahib A. ( Elsevier , 2022 , Article)Designing an optimal mixed-refrigerant (MR) composition for any cryogenic refrigeration process plays a key role in the process overall performance. However, the existing approaches of developing mixed-refrigerants for ... -
Techno-economic assessment of low-carbon hydrogen exports from the Middle East to the Asia-Pacific, and Europe
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Musharavati, Farayi; Azizur Rahman, Mohammad ( Taylor & Francis , 2023 , Article)Hydrogen has the potential to play a major role in the global energy mix in the future and to achieve carbon-neutral targets by 2050. However, there is a lack of studies that investigate the economic feasibility of ... -
Theoretical and experimental study on the selection of pure and mixed refrigerants for a power-cooling system driven by ultra-low-grade heat
Ahmad K., Sleiti; Al-Ammari, Wahib A.; Musharavati, Farayi ( Elsevier , 2023 , Article)This study theoretically and experimentally evaluates the performance of a system that combines an organic Rankine cycle (ORC) and a vapor compression cycle (VCC) driven by ultra-low-grade heat (ULGH). A systematic method ... -
Thermoeconomic and optimization analyses of direct oxy-combustion supercritical carbon dioxide power cycles with dry and wet cooling
Ahmad K., Sleiti; Al-Ammari, Wahib A.; Vesely, Ladislav; Kapat, Jayanta S. ( Elsevier , 2021 , Article)Oxy-combustion supercritical CO2 power cycles have the advantages of high-energy efficiency and near-zero pollutant emissions. Thus, these cycles are considered as an efficient way to reduce CO2 emissions while maintaining ...