A5047968129- Nanofluid Flow and Heat Transfer
- Solar Thermal and Photovoltaic Systems
- Heat Transfer Mechanisms
- Electric Motor Design and Analysis
- Electric and Hybrid Vehicle Technologies
- Heat Transfer and Optimization
- Solar-Powered Water Purification Methods
- Magnetic Bearings and Levitation Dynamics
- Power Systems and Renewable Energy
- Microgrid Control and Optimization
- Building Energy and Comfort Optimization
- Energy Efficiency and Management
- Hybrid Renewable Energy Systems
- Aerodynamics and Fluid Dynamics Research
- Membrane Separation Technologies
- Dental Research and COVID-19
- Lattice Boltzmann Simulation Studies
- Adsorption and Cooling Systems
- Energy and Environment Impacts
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Electric Vehicles and Infrastructure
- Wind Energy Research and Development
- Biodiesel Production and Applications
- Integrated Energy Systems Optimization
- Water-Energy-Food Nexus Studies
University of Hertfordshire
2022-2024
Ain Shams University
2023
British University in Egypt
2019-2020
The scientific community has focused on the use of nanofluids to enhance solar collectors' thermal efficiency. Solar energy is considered an extensively available resource with a weak effect environment. flat-plate collector be most common used, but efficiency limitations, such as low effectiveness absorber in terms absorption and transmission that working fluid. can enhanced by replacing fluid nanofluid. Nanofluids are new media exhibit thermophysical properties superior those ordinary...
Increasing the energy demand and limited availability of conventional sources are main challenges to secure human future. Solar is an attractive source ensure sustainability in this world for now Evacuated tube solar collector a thermal mostly used domestic applications. The replacement working fluid with nanofluid can enhance heat transfer even low temperature effect multi-walled carbon nanotubes water as evacuated experimentally investigate exergy efficiencies collector. Weight fractions...
Flywheel energy storage has emerged as a viable technology in recent years due to its large instantaneous power and high density. offers an onboard recovery system which is durable, efficient, environmentally friendly. The flywheel the housing surface temperatures can be considerably influenced by friction induced windage losses associated with non-vented airflows air-gap of high-speed rotating flywheel. Many engineering applications have been interested features radial axial flows. flow...
Stationary solar collector such as flat-plate is a thermal device, which traps energy and converts it into heat that can be used in industrial domestic applications water heating. Flat-plate performance enhancement investigated this research paper. Two cross-sectional geometries of the tube exchanger were investigated; normal circular twisted experiment. The aim to enhance transfer tubes reduce shell pressure drop; application study performance. Both examined same location conditions with...
Recent technological advances have made it possible to produce particles with nanometer dimensions that are uniformly and steadily suspended in traditional solar liquids enhanced the impact of thermo-physical parameters. In this research, a three-dimensional flat plate collector was built using thin single working fluid pipe. The physical model solved computationally under conditions conjugated laminar forced convection range 500 ≤ Re 1900 heat flux 1000 W/m2. Distilled water (DW) different...
In recent studies, Thermo-Electric Coolers (TEC) have been utilized for dehumidification purposes, which is mainly based on the extraction of moisture from humid atmospheric air. The reviewed literature showed that rate water collection TEC-based system can be affected by various parameters such as module's input voltage, heat sink orientation, and tilt angles. this research, analysis variance (ANOVA) was used to examine significance these factors their interaction within system. Four levels...
Covalent and non-covalent nanofluids were tested inside a circular tube fitted with twisted tape inserts 45° 90° helix angles. Reynolds number was 7000 ≤ Re 17,000, thermophysical properties assessed at 308 K. The physical model solved numerically via two-equation eddy-viscosity (SST k-omega turbulence). GNPs-SDBS@DW GNPs-COOH@DW concentrations (0.025 wt.%, 0.05 wt.% 0.1 wt.%) considered in this study. pipes' walls heated under constant temperature of 330 current study six parameters: outlet...
Abstract Mono, hybrid, and ternary nanofluids were tested inside the plain twisted-tape pipes using k-omega shear stress transport turbulence models. The Reynolds number was 5,000 ≤ Re 15,000, thermophysical properties calculated under condition of 303 K. Single (Al 2 O 3 /distilled water [DW], SiO /DW, ZnO/DW), hybrid (SiO + Al ZnO/DW, ZnO /DW) in mixture ratio 80:20, ZnO/DW) 60:20:20 estimated different volumetric concentrations (1, 2, 3, 4%). twisted pipe had a higher outlet temperature...
Amidst the growing demand for efficient and sustainable energy storage solutions, Flywheel Energy Storage Systems (FESSs) have garnered attention their potential to meet modern needs. This study uses Computational Fluid Dynamics (CFD) simulations investigate optimise aerodynamic performance of FESSs. Key parameters such as radius ratio, aspect rotational velocity were analysed understand impact on windage losses heat transfer. reveals critical role Taylor–Couette flow The formation Taylor...
<div class="section abstract"><div class="htmlview paragraph">During urban driving, a significant amount of energy is lost due to continuous braking, which can be recovered and stored. The flywheel storage system (FESS) efficiently recover store the vehicle's kinetic during deceleration. However, standby losses in FESS, primarily aerodynamic drag, affect its overall efficiency. To address this issue, rotor typically housed dedicated housing maintained at low pressure using vacuum...
Abstract Flywheel energy storage systems (FESSs) have gained significant attention as a promising technology for effective harvesting, and redeployment of energy. This is used particularly in renewable applications where they help manage the intermittency variability output from sources such solar wind by providing quick response, high power density, cycling stability without degradation issues associated with chemical batteries. paper presents comprehensive study on optimisation geometric...
Abstract Energy storage has recently emerged as a topic of discussion in the context energy transition away from fossil fuels. The flywheel system (FESS) is gaining popularity due to its distinct advantages, which include long life cycles, high power density, and low environmental impact. However, windage loss significantly contributes total losses high-speed rotating machines such flywheel. Windage increases self-discharge, rendering FESS unsuitable for long-term applications. In...