Performance appraisal of a modified finned solar air collector thermally assisted by a smart-switchable cover for constant outlet hot air temperature: Numerical investigation Mohamed E. Zayed, Kashif Irshad, Shafiqur Rehman, A.E. Kabeel, Mohammed El Hadi Attia, A.S. Abdelrazik, Abdelkrim Khelifa, Mohamed Abdelgaied, Mohamed A. Mohandes, Salem Algarni, Talal Alqahtani Energy Nexus, 2025 This study introduces a modified finned plate solar air heater (FPSAH) combined with a low-cost smart-switchable cover (SSC) for constant outlet hot air temperature. The SSC is adapted as a sun blackout shield cover with a controllable curtain roller blind which is flexible to automatically and partially shade the glazing coverage. The main objective is to manage the falling solar energy transmitted through the glazing coverage to permanently facilitate a constant outlet hot air temperature throughout the daytime. The FPSAH-SSC is studied through CFD simulations under solar irradiation values changing from 600 to 1000 W/m 2 at a constant airflow rate of 0.60 kg/min. A series of simulations are performed to determine the optimal shading length of the SSC corresponding to each solar irradiation value to provide a constant outlet hot air temperature of 50 °C. Moreover, thermo-economic analyses are conducted on the proposed system to evaluate the heating power, outlet hot air temperature, average Nusselt number, energy efficiency, and cost of 1.0 kW of thermal heat. The results show that the optimal shading lengths, corresponding to solar irradiation of 600, 700, 800, 900, and 1000 W/m 2 , are determined to be 0.0, 4.0, 20, 30, and 40 cm, respectively. This in consequence results in a controlled outlet hot air temperature from the proposed FPSAH-SSC of 48.08, 49.85, 49.83, 50.11, and 49.84 °C °C, capable of decreasing the hot air temperatures by 8.95%, 14.57%, 18.7%, and 24.44%, respectively, compared the case without using an SSC. Moreover, the energy efficiency reaches up to 40.62%, while the cost of 1 kW of thermal heat is estimated at 0.0098 $/kWh, respectively.
Exergoeconomic and environmental impact assessment of a semi-scale office with solar chimney and evaporative cooling tower for sustainable space cooling and air ventilation Bashar Shboul, Mohamed E. Zayed, A.S. Abdelrazik, Mohammad Alrbai, Alhaj-Saleh Odat, Fares Almomani Energy Conversion and Management X, 2025 • Developed a 9-E model for a solar chimney cooling system in Jordan. • Achieved 32.19% energy efficiency and 5.84% exergy efficiency in simulations. • Annual CO 2 emissions reduced by 4.583 tons with a 2-year carbon payback. • Economic analysis confirms $1120 capital cost and 24.5 $/kWh operational cost. • Exergy-based methods provide reliable evaluation for solar cooling systems. Space cooling now consumes about 20 % of global building electricity, using conventional vapor-compression cooling systems that are mainly powered by fossil-fuel electricity, thereby driving peak-power demand and greenhouse-gas emissions. This study numerically investigates a novel hybrid building-integrated solar chimney with an evaporative cooling tower (BISCECT) for sustainable space cooling and natural air ventilation. A model was developed using MATLAB/Simulink® software based on thermodynamic/ heat transfer equations. A comprehensive 9E assessment, encompassing energy, exergy, economic, environmental, energoeconomic, exergoeconomic, enviroeconomic, exergoenvironmental, and exergoenviroeconomic indicators, is carried out, alongside a sensitivity analysis of vapor-inlet temperature, chimney heat output, and geometric parameters. The simulation results indicated that the BISCECT system can supply 10 kW of thermal power with energy and exergy efficiencies of 32.19 % and 5.84 %, respectively. Moreover, the design achieves the levelized capital and operating costs of 89.01 $/kWh and 24.5 $/kWh, yielding a levelized cost of energy of 0.1137 $/kWh, while mitigating 4.58 t CO 2 yr 1 and realizing a two-year carbon payback period. These results demonstrate the thermo-enviro-economic viability of the proposed passive cooling concept for green residential buildings in hot-arid climates.
A novel hybrid photovoltaic/thermal-fuel cell system for efficient hydrogen, heat, and power generation: Techno-economic and environmental evaluation Bashar Shboul, Mohamed E. Zayed, A.S. Abdelrazik, Mohammad Alrbai, Habes Ali Khawaldeh, Fares Almomani International Journal of Hydrogen Energy, 2025 This article presents techno-economic and environmental (3E) assessment of a novel hybrid photovoltaic thermal solar collector and fuel cell (PVT-FC) system for integrated electricity, heat, and green hydrogen (CPHH) production. The system configuration consists of PVT units, an electrolyzer, fuel cells (FCs), an inverter, and water and hydrogen storage tanks. The study uses MATLAB/Simulink® to assess technical, economic, and environmental factors, enhancing efficiency and competitiveness over conventional PV/FC systems. Key performance metrics including total power generation ( P PVT-FC ), hydrogen mass production ( m PVT-FC ), gross thermal power output ( Q PVT-FC ) and overall system efficiency (η PVT-FC ) as well as levelized cost of energy (LCOE), levelized cost of hydrogen (LCOH), Total Carbon Emission Reduction (TCER), and associated financial savings were assessed. The influences of system parameters—coolant inlet and outlet temperatures, mass flow rate, electrolyzer efficiency, fuel cell temperature and cell count—on output performance were explored. Findings reveal that as cooling fluid inlet temperature increases from 4 °C to 32 °C, the P PVT-FC and m PVT-FC declined. The P PVT-FC dropping from 2.0 kW to 0.75 kW and the η PVT-FC 16%–8%, while the Q PVT-FC remains stable at ∼689.5 kW. Increasing the coolant outlet temperature and electrolyzer efficiency enhances m PVT-FC and η PVT-FC reaching a maximum efficiency of 18.06% at a 0.5 kg/s flow rate. Furthermore, increasing fuel cell temperature from 40 °C to 100 °C significantly improves overall η PVT-FC and m PVT-FC , demonstrating the direct impact of thermal regulation on system performance. Results at different outlet temperatures show that higher coolant flow rates and electrolyzer efficiencies improve hydrogen yield and system efficiency, achieving a maximum of 18.06% efficiency at 0.5 kg/s flow rate. Economically, the LCOE remains steady at ∼0.25 $/kWh, while LCOH varies between 53 $/kg and 56 $/kg as the outlet temperature increases to 60 °C. Increasing the number of fuel cells from 50 to 400 reduces LCOE but increases LCOH, while significantly boosting CO 2 emissions reduction and financial savings, achieving up to 350 tons of CO 2 reduction and approximately $900/h in savings. The proposed system presents an innovative and efficient solution for the integrated production of electricity, heat, and green hydrogen (CPHH). • Novel PVT-FC system integrates CPHH production, replacing conventional hybrid setups. • Comprehensive 3E analysis performed using MATLAB/Simulink® for detailed evaluations. • Validated model shows stable LCOE at 0.25 $/kWh and LCOH at 53–56 $/kg. • Sensitivity analysis reveals optimal input impacts, achieving 18.06% efficiency. • System cuts CO 2 emissions by 350 tons and saves $900/hour with optimized design.
Optimal Design of a PV/Hydrogen-Based Storage System to Supply Heat and Power to a Direct Air Carbon Capture System Ahmed M. Attia, Hamid Zentou, Hussain A. Alyosef, Ahmed S. Abdelrazik, Mahmoud M. Abdelnaby Energy Storage, 2025 Direct air capture (DAC) technology aims to curb the leading cause of global warming by reducing atmospheric carbon content. The DAC system uses thermal energy to desorb captured carbon, with its primary components powered by electrical energy. In this research, an approach integrates hybrid photovoltaic, with spectral splitting optical filtration (PV/SSOF), and hydrogen‐based energy storage to provide the required thermal and electrical energy for the DAC system, thereby minimizing environmental impact. To achieve this goal, a mixed‐integer linear programming (MILP) optimization model is formulated to minimize the project's lifecycle cost, and the problem is solved by the particle swarm optimization (PSO) algorithm. The model determines the optimal configuration of the system, including the number of PV panels, hydrogen tanks, electrolyzers, fuel cells, and heat buffer tanks. The study tracks the system's performance by assessing how much the PV system meets heat and power requirements. A real‐world case study from an industrial city located in the eastern region of Saudi Arabia is presented to showcase the practicality of the optimization model. Three configurations were considered to study the techno‐economic viability: standalone with and without a boiler and grid‐connected. A sensitivity analysis is conducted to examine techno‐economic viability and obtain managerial insights. It is found that the grid‐connected system is economically favorable and thermodynamically efficient due to its almost 19% cost reduction for electrical energy and 17% for exergy compared to a system without a boiler. Furthermore, a smaller electrical energy‐exergy cost gap shows the system's energy conversion efficiency with low losses.
Investigating the performance of photovoltaic panels using optical water spectral splitting filter: An experimental and computational analysis Yasser M. Safan, A. S. Abdelrazik, Ashraf E. Elmohlawy, S. A. Abdel-Moneim, Mohamed R. Salem Journal of Renewable and Sustainable Energy, 2024 This study addresses the thermal stress issues caused by conventional cooling methods on photovoltaic (PV) cells, which reduce their efficiency and lifespan. Recently, the water-based spectral splitting filter (SSF) system was introduced as a solution to optimize solar energy conversion. The research fills a significant gap by focusing on the practical application of water-based SSFs under actual high-temperature conditions in Cairo (latitude of 30.1°N). The study evaluates the effects of radiation intensity (200–1000 W/m2), optical fluid flow rate (0.001–0.01 kg/s), and filter thickness (2–10 mm) on the system's performance. According to the data, the SSF system is a superior cooling technique as it can lower the PV temperature by 93% over a range of radiation intensities. The system's performance is also found to be positively influenced by increasing the SSF's thickness and flow rate, achieving 15% and 29.4% maximum increases in the fill factor and electrical efficiency, respectively, over the conventional PV panel at a thickness of 10 mm and a flow rate of 0.01 kg/s. Additionally, experimental data support the modeling findings, with a maximum variation of ±4.7% in the efficiency of the PV panel.
Integrating static insulation versus dynamic PCM materials in building walls for desert climate conditions: A comparative assessment. ZA Al-Absi, M Asif, AS Abdelrazik Applied Thermal Engineering, 129696 , 2026 2026 Citations: 2
Computational modeling of high-concentration solar systems using ANSYS-Fluent: Verified models, implemented methods, & existing challenges AS Abdelrazik, MA Sharafeldin, M Elwardany, AM Masoud, AN Allam, ... Renewable and Sustainable Energy Reviews 226, 116305 , 2026 2026 Citations: 6
Performance appraisal of a modified finned solar air collector thermally assisted by a smart-switchable cover for constant outlet hot air temperature: Numerical investigation ME Zayed, K Irshad, S Rehman, AE Kabeel, MEH Attia, AS Abdelrazik, ... Energy Nexus, 100529 , 2025 2025 Citations: 7
Exergoeconomic and environmental impact assessment of a semi-scale office with solar chimney and evaporative cooling tower for sustainable space cooling and air ventilation B Shboul, ME Zayed, AS Abdelrazik, M Alrbai, AS Odat, F Almomani Energy Conversion and Management: X, 101191 , 2025 2025 Citations: 5
Hybrid photovoltaic thermal system with spectrum screening AS ABDELRAZIK, FA ALSULAIMAN, S Rahman US Patent App. 19/073,131 , 2025 2025
A novel hybrid photovoltaic/thermal-fuel cell system for efficient hydrogen, heat, and power generation: techno-economic and environmental evaluation B Shboul, ME Zayed, AS Abdelrazik, M Alrbai, HA Khawaldeh, ... International Journal of Hydrogen Energy 136, 1041-1060 , 2025 2025 Citations: 25
Experimental investigation of specific heat and thermal stability of MOF-303 at different water vapor loading and various temperatures AEA El-maaty, O Saoudi, AS Abdelrazik, R Ben-Mansour International Communications in Heat and Mass Transfer 165, 109088 , 2025 2025 Citations: 9
Benchmarking reinforcement learning and prototyping development of floating solar power system: Experimental study and LSTM modeling combined with brown-bear optimization algorithm ME Zayed, S Rehman, IA Elgendy, A Al-Shaikhi, MA Mohandes, K Irshad, ... Energy Conversion and Management 332, 119696 , 2025 2025 Citations: 53
Hybrid photovoltaic thermal system with flexible arrangements of spectral splitting optical filtration and thermal management utilities AS ABDELRAZIK, FA ALSULAIMAN, S Rahman US Patent 12,273,067 , 2025 2025 Citations: 1
Optimal Design of a PV/Hydrogen‐Based Storage System to Supply Heat and Power to a Direct Air Carbon Capture System AM Attia, H Zentou, HA Alyosef, AS Abdelrazik, MM Abdelnaby Energy Storage 7 (3), e70157 , 2025 2025 Citations: 3
Energy Nexus ME Zayed, K Irshad, S Rehman, AE Kabeel, MEH Attia, AS Abdelrazik, ... Energy 19 (10052), 9 , 2025 2025
Experimental and numerical study of enhancing the electrical performance of photovoltaic panel using phase change material in transient conditions M Bouzelmad, Y Belkassmi, AS Abdelrazik, A Kotri Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 46 … , 2024 2024 Citations: 5
Practicality and economic assessment on using the solar organic Rankine cycle as a power source for a specific membrane-based desalination system M Elwardany, AS Abdelrazik, H Fathi, AMA Omar, N Abdelkawy Water Conservation Science and Engineering 9 (2), 46 , 2024 2024 Citations: 3
Investigating the performance of photovoltaic panels using optical water spectral splitting filter: An experimental and computational analysis YM Safan, AS Abdelrazik, AE Elmohlawy, SA Abdel-Moneim, MR Salem Journal of Renewable and Sustainable Energy 16 (4) , 2024 2024 Citations: 2
The Compatibility of Water/Core-Shell Ag-SiO 2 Nanofluid as a Spectral Splitting Optical Filtration Fluid to Six Types of Photovoltaic Solar Cells Under Concentrated … AS Abdelrazik Transition Towards a Carbon Free Future: Selected Papers from the World … , 2024 2024
Effect of design and operation parameters on solar‐driven membrane‐based desalination systems: An overview AS Abdelrazik, MA Sharafeldin, M Elwardany, N Abdulkawy, B Shboul, ... Wiley Interdisciplinary Reviews: Energy and Environment 13 (3), e521 , 2024 2024 Citations: 8
New hybrid photovoltaic-fuel cell system for green hydrogen and power production: Performance optimization assisted with Gaussian process regression method B Shboul, ME Zayed, R Tariq, WM Ashraf, AS Odat, S Rehman, ... International Journal of Hydrogen Energy 59, 1214-1229 , 2024 2024 Citations: 108
Numerical Analysis of the Phase Change Material Impact on the Functionality of a Hybrid Photovoltaic Thermal Solar System in Transient Conditions M Bouzelmad, Y Belkassmi, AS Abdelrazik, A Kotri, M Gounzari, M Sahal Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 112 (1 … , 2023 2023 Citations: 5
ANSYS-Fluent numerical modeling of the solar thermal and hybrid photovoltaic-based solar harvesting systems AS Abdelrazik, A Osama, AN Allam, B Shboul, MA Sharafeldin, ... Journal of Thermal Analysis and Calorimetry 148 (21), 11373-11424 , 2023 2023 Citations: 47
Water compatibility as a spectral splitting optical filtration fluid to six types of photovoltaic solar cells under high solar concentrations AS Abdelrazik Energy Conversion and Management 294 (117557) , 2023 2023 Citations: 15
MOST CITED SCHOLAR PUBLICATIONS
A review on recent development for the design and packaging of hybrid photovoltaic/thermal (PV/T) solar systems AS Abdelrazik, FA Al-Sulaiman, R Saidur, R Ben-Mansour Renewable and Sustainable Energy Reviews 95, 110-129 , 2018 2018 Citations: 225
MXene based new class of silicone oil nanofluids for the performance improvement of concentrated photovoltaic thermal collector RS Navid Aslfattahi, L. Samylingam, A.S. Abdelrazik, A. Arifutzzaman Solar Energy Materials & Solar Cells 211 (110526) , 2020 2020 Citations: 151
Numerical investigation of the effects of the nano-enhanced phase change materials on the thermal and electrical performance of hybrid PV/thermal systems AS Abdelrazik, FA Al-Sulaiman, R Saidur Energy Conversion and Management 205, 112449 , 2020 2020 Citations: 147
The recent advancements in the building integrated photovoltaic/thermal (BIPV/T) systems: An updated review A.S. Abdelrazik, Bashar Shboul, Mohamed Elwardany, R.N. Zohny, Ahmed Osama Renewable and Sustainable Energy Reviews 170 (1364-0321) , 2022 2022 Citations: 143
Optical, stability and energy performance of water-based MXene nanofluids in hybrid PV/thermal solar systems ASA K.H. Tan, Navid Aslfattahi, A. Arifutzzaman, R. Saidur, F.A. Al-Sulaiman Solar Energy 204, 32-47 , 2020 2020 Citations: 130
New hybrid photovoltaic-fuel cell system for green hydrogen and power production: Performance optimization assisted with Gaussian process regression method B Shboul, ME Zayed, R Tariq, WM Ashraf, AS Odat, S Rehman, ... International Journal of Hydrogen Energy 59, 1214-1229 , 2024 2024 Citations: 108
Thermal regulation and performance assessment of a hybrid photovoltaic/thermal system using different combinations of nano-enhanced phase change materials AS Abdelrazik, R Saidur, FA Al-Sulaiman Solar Energy Materials and Solar Cells 215, 110645 , 2020 2020 Citations: 88
Investigation of the performance of a hybrid PV/thermal system using water/silver nanofluid-based optical filter FAAS A.S. Abdelrazika, R. Saidur Energy , 2020 2020 Citations: 77
Improved thermo-physical properties and energy efficiency of hybrid PCM/graphene-silver nanocomposite in a hybrid CPV/thermal solar system: N. Aslfattahi et al. N Aslfattahi, R Saidur, A Arifutzzaman, AS Abdelrazik, L Samylingam, ... Journal of Thermal Analysis and Calorimetry 147 (2), 1125-1142 , 2022 2022 Citations: 70
Optical behavior of a water/silver nanofluid and their influence on the performance of a photovoltaic-thermal collector AS Abdelrazik, FA Al-Sulaiman, R Saidur Solar Energy Materials and Solar Cells 201, 110054 , 2019 2019 Citations: 67
Benchmarking reinforcement learning and prototyping development of floating solar power system: Experimental study and LSTM modeling combined with brown-bear optimization algorithm ME Zayed, S Rehman, IA Elgendy, A Al-Shaikhi, MA Mohandes, K Irshad, ... Energy Conversion and Management 332, 119696 , 2025 2025 Citations: 53
Optical properties and Stability of Water-based nanofluids mixed with reduced Graphene Oxide decorated with Silver and energy performance investigation in hybrid PV/Thermal … RS A. S. Abdelrazik, K. H. Tan, Navid Aslfattahi International Journal of Energy Research , 2020 2020 Citations: 52
ANSYS-Fluent numerical modeling of the solar thermal and hybrid photovoltaic-based solar harvesting systems AS Abdelrazik, A Osama, AN Allam, B Shboul, MA Sharafeldin, ... Journal of Thermal Analysis and Calorimetry 148 (21), 11373-11424 , 2023 2023 Citations: 47
Evaluation of the effects of optical filtration and nanoPCM on the performance of a hybrid photovoltaic-thermal solar collector AS Abdelrazik, FA Al-Sulaiman, R Saidur, R Ben-Mansour Energy Conversion and Management 195, 139-156 , 2019 2019 Citations: 47
Multiwalled CNT and graphene nanoplatelets based nano-enhanced PCMs: Evaluation for the thermal performance and its implications on the performance of hybrid PV/thermal systems AS Abdelrazik, R Saidur, FA Al-Sulaiman, A Al-Ahmed, R Ben-Mansour Materials today communications 31, 103618 , 2022 2022 Citations: 42
The potential of liquid-based spectrally-selective optical filtration and its use in hybrid photovoltaic/thermal solar systems AS Abdelrazik Solar energy 249, 569-605 , 2023 2023 Citations: 31
Potential of molecular dynamics in the simulation of nanofluids properties and stability AS Abdelrazik, MAM Sayed, AMA Omar, FA FM, HE Alshimaa, ... Journal of Molecular Liquids 381, 121757 , 2023 2023 Citations: 30
Feasibility study for the integration of optical filtration and nano-enhanced phase change materials to the conventional PV-based solar systems AS Abdelrazik, FA Al-Sulaiman, R Saidur Renewable Energy 187, 463-483 , 2022 2022 Citations: 26
A novel hybrid photovoltaic/thermal-fuel cell system for efficient hydrogen, heat, and power generation: techno-economic and environmental evaluation B Shboul, ME Zayed, AS Abdelrazik, M Alrbai, HA Khawaldeh, ... International Journal of Hydrogen Energy 136, 1041-1060 , 2025 2025 Citations: 25
Water compatibility as a spectral splitting optical filtration fluid to six types of photovoltaic solar cells under high solar concentrations AS Abdelrazik Energy Conversion and Management 294 (117557) , 2023 2023 Citations: 15