Experimental investigation and CFD modeling to assess the performance of solar air humidifier

Authors: Al-Abbasi O., Sarac B., Ayhan T.
The humidification chamber is a vital component of the humidification-dehumidification cycle that plays an essential role in determining the effectiveness of this system. In this study, the combined effect of heating and humidifying processes in the plate type humidification chamber, the so-called solar air humidifier is investigated experimentally and using [...]

Introduction to special issue on smart systems facts, challenges and technologies

Authors: Mahmoud M.S., Eltoweissy M., Curran K., Elmedany W.
Preamble: The University of Bahrain Smart Cities event has been organized in collaboration with the IET-EMEA (IET Europe, Middle East and Africa Regional), IET, (The Institution of Engineering and Technology), UK. Smart Cities relate to the employment of smart technologies and data as the means to solving cities’ sustainability challenges [...]

Quantifying exposure levels of coastal facilities to oil spills in Bahrain, Arabian Gulf

Authors: Marzooq H., Naser H.A., Elkanzi E.M.
The Arabian Gulf is considered as a hub for global oil industry. Thus the Arabian Gulf marine environment is under permanent threat from oil spills due to oil exploitation, production, and transportation. Oil pollution poses adverse effects on marine environment, society, and economy. Oil spill incidents that occurred in Bahrain [...]

Effect of reaction time on structural, morphological, optical and photocatalytic properties of copper oxide (CuO) nanostructures

Authors: Vinothkumar P., Manoharan C., Shanmugapriya B., Bououdina M.
Spindle-like CuO nanostructure had been synthesized by facile hydrothermal method at low temperature of 100 °C. The influence of reaction time on the evolution of structure, morphology, optical and photocatalytic properties was investigated. X-ray diffraction analysis revealed the monoclinic phase. HR-SEM and TEM analyses evidenced morphological transformation with reaction time. XPS [...]

Novel PV panels design modeling to support smart cities

Authors: Qamber I.S., AL-Hamad M.Y.
Nowadays Photovoltaic (PV) became the new competitive energy resource. Therefore, it needs to be connected to the grid to reduce the demand from the authority, which means the flow of the load will be reduced. The production of the electricity as a solar energy will increase in the locations where [...]

Fuel production from waste polystyrene via pyrolysis: Kinetics and products distribution

Authors: Nisar J., Ali G., Shah A., Iqbal M., Khan R.A., Sirajuddin, Anwar F., Ullah R., Akhter M.S.
In the present study polystyrene waste (PS) was collected from a drop off site in a local market and pyrolyzed at heating rates of 5, 10, 15 and 20 °C/min and temperature range 40–600 °C under nitrogen condition. The apparent activation energy (Ea) and pre-exponential factor (A) were determined using [...]

Dependence of pH on phase stability, optical and photoelectrical properties of SnS thin films

Authors: Mahdi M.S., Hmood A., Ibrahim K., Ahmed N.M., Bououdina M.
This study reports the effect of pH value of the reaction solution (5, 5.8 and 6.5) on growth rate of SnS films deposited by chemical bath deposition and their characteristics such as X-ray diffraction (XRD), surface morphology, phase stability, optical and photoelectrical. XRD analysis reveals that the films exhibit an [...]

An efficient workload clustering framework for large-scale data centers

Authors: Ismaeel S., Al-Khazraji A., Miri A.
The cloud workload refers to charge made by a huge diversity of independent services and applications located on cloud infrastructures. Workload characteristics can be defined by tasks or Virtual Machines (VMs). Then again, tasks/VMs scheduling, allocation, workload predictions are important topics, which are gaining steadily increasing attention particularly in the [...]

Solar powered battery-less portable RO desalination unit: Simulation studies

Authors: Kandathil A.K., Mansour N., Sreedharan S., Taleb M.
Due to the promising technical feasibility of PV powered RO unit, many studies worldwide are carried out to further enhance their performance. In this simulation studies, we investigate the performance and efficiency of a battery free portable PV-RO unit powered directly and continuously from the PV array and compare it [...]

A novel host readiness factor for energy-efficient VM consolidation in cloud data centers

Authors: Ismaeel S., Miri A., Al-Khazraji A.
Energy efficiency has become a major concern in modern data centers design due to financial and environmental considerations. In existing large data centers, dynamic virtual machine (VM) provisioning between these servers is the most efficient method to improve servers’ utilization and reduce energy. These methods use monitoring, historical data, prediction, [...]
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