Ahmad Sakhrieh

• PhD
• Professor (Associate) at University of Jordan

Water transmission lines have potential reserved energy, which is usually lost. Therefore, targeting this clean energy to produce electricity to power up the auxiliaries and utilities of water plants or consumers is financially and environmentally beneficial. This paper aims to investigate the feasibility of installing an inline hydropower system i...

Climate change is exacerbated by vehicle emissions. Furthermore, vehicle pollution contributes to respiratory and cardiopulmonary diseases, as well as lung cancer. This requires a drastic reduction in global greenhouse gas emissions for the automobile industry. To address this issue, researchers are required to reduce friction, which is one of the...

Buildings, both residential and commercial, continue to be a major source of energy consumption in the world due to the escalating rate of global energy demand. Energy supplied to buildings through conventional means negatively impacts the environment. Due to its geographic location and climatic conditions, Jordan has a high solar energy potential....

Stand-alone hybrid power generation system for a cow farm in Jordan is economically and technically optimized to meet the daily electrical load of the farm. A combination of photovoltaics, biogas generators, diesel generators, wind turbines, and batteries are used to determine the best scenario for the farm's power generation. In accordance with th...

Stand-alone hybrid power generation system for a cow farm in Jordan is economically and technically optimized to meet the daily electrical load of the farm. A combination of photovoltaics, biogas generators, diesel generators, wind turbines, and batteries are used to determine the best scenario for the farm's power generation. In accordance with th...

The sustainable building approach in the United Arab Emirates (UAE) has encountered impediments, as it is a new practice for society in UAE. Here, traditional construction methods are still adopted without considering environmental issues and growing concern over climate change. To overcome these problems, the Ras Al Khaimah Municipality launched n...

Integration management is a significant factor of success in different types of organizations. Yet, the definition of integration management and ways to measure performance in a comprehensive framework need to be investigated in different environments. This paper analyzes the impact of integration management practices on company performance in the...

To enhance the performance of organizations, the motivation of employees is a critical factor. The challenge is that motivation can be dependent on the culture and time of analysis. The timely studies are needed for different regions. The purpose of this study is to perform the motivation factors analysis of government employees to enhance their pe...

This study investigates the relationship between organizational culture (OC) and the performance of organizations in the United Arab Emirates (UAE). A theoretical framework to measure this relationship in the UAE is designed. Interviews with experts and questionnaires were conducted to prioritize certain identifiers and indicators of the relationsh...

Supply chain management plays a significant role in the construction industry as it affects performance and effectiveness. The purpose of this study is to investigate how green supply chain management (GSCM) concepts and dimensions are being used in the construction industry in the United Arab Emirates (UAE). Based on a comprehensive literature rev...

This study investigates experimentally the performance of two-dimensional solar tracking systems with reflector using commercial silicon based photovoltaic module, with open and closed loop control systems. Different reflector materials were also investigated. The experiments were performed at the Hashemite University campus in Zarqa at a latitude...

span lang="EN-US">This study investigates experimentally the performance of two-dimensional solar tracking systems with reflector using commercial silicon based photovoltaic module, with open and closed loop control systems. Different reflector materials were also investigated. The experiments were performed at the Hashemite University campus in Za...

This study is based on examining the domain of virtual leadership as a new efficient field. Four distinct hypotheses have been tested which are primarily rested on virtual leadership. This research employs linear regression, T-test, and a single factor Analysis of Variance (ANOVA) as statistical tools. The methodology of this study comprises of con...

In this research, two identical solar stills were designed and constructed to investigate the effect of adding copper and aluminum oxide nanoparticles on the quantity of water produced by solar desalination. The two solar stills were installed side by side, and measurements were recorded simultaneously from both stills. The nanoparticles were added...

Communication in the construction sector is complex, especially in the design phase, that if not properly handled, can reduce productivity. This topic is best studied in the United Arab Emirates (UAE) due to diverse religion, ethnicity and nationalities. The research in this area is considerably increased due to the rapid construction growth during...

Air pollution is a major obstacle faced by all countries and impact the environment, public health, socioeconomics, and, agriculture. In this study, air pollutants in the city of Amman were presented and analyzed. Nonlinear Autoregressive Exogenous (NARX) model was used to forecast daily average pollutants’ levels in Amman, Jordan. The model was bu...

In this study, thermodynamic analysis and environmental impact of a lab-scale biomass fired open cycle power plant have been performed. The performance of the plant including combustion and generated power efficiencies was studied based on first and second laws of thermodynamics. The combustion temperature and mass fraction of pollutants resulted f...

This paper studies the influence of equivalence ratio, pressure and initial temperature on adiabatic flame temperature and laminar flame speed of methane-air mixture. The results indicate that adiabatic flame temperature is weakly correlated with pressure. The adiabatic flame temperature increases only by about 50ºC as a result of 30 bar pressure i...

In this work, premixed turbulent combustion of methane under the effect of the electric field was simulated using Ansys /Fluent with Gri-mech 1.2. The simulation included Ionic species and NO formation. The combustion simulation without electric field was done first to validate the mathematical model for laminar combustion. It was found that flame...

This work aims to assess the effect of using “Durathem G” as a liquid absorption fluid filter on the performance of PV cells since its spectral profile matches the spectral profile of silicon cells to a large extent. Also, it aims to evaluate the heat gained by the fluid and its potential to be employed in hybrid PV systems. The experiment was carr...

In this study, a developed two-dimensional mathematical model was used to represent the physical model of the combustion process of olive cake and date seed, and solve the governing equations using finite-volume method. The simulation was performed using ANSYS/Fluent software in order to estimate maximum temperature, heating values and pollutants c...

The building envelope is the most affecting part in the energy interaction between the buildings and the surrounding. Proper design of the envelope components not only can save the required energy for the building but also can improve the thermal comfort of its occupants. In this research, energy modeling and simulation for a residential building i...

In the last few years, Jordan has experienced an expansion in the number of electrical appliances. In order to reduce energy consumption in the residential sector, Jordan has to consider implementing minimum energy efficiency standards (MEES) for electrical appliances in the coming years. This study provides background on the benefits of, and steps...

A computational work has been done to investigate the effects of mixed convection of MHD flow in nanofluid filled and partially heated wavy walled lid-driven enclosure. Finite difference method is used to solve governing equations of mixed convection for different parameters as Hartmann number, Richardson number, nanoparticle volume rate in partial...

Water Disinfection Using CSP technology

In this study, Oxyhydrogen (HHO) gas produced by electrolysis process using Potassium hydroxide (KOH) was introduced as a supplementary fuel into a four-cylinder, four -stroke Compression Ignition (CI) engine. In the first part, the throttle of the engine is held to its full, half and quarter position. The field voltage (brake load) is varied to ob...

Organizations are spending large amounts of money on their energy consumption. The scarcity of energy resources, along with their price volatility, has become a major concern for all industries. Consequently, the need for managing and conserving energy has recently gained larger attention. A good management always pursues savings opportunities with...

The performance of an 8.0 kW Solar Adsorption Refrigeration System (SARS) under Jordanian climate conditions was evaluated experimentally and theoretically. The solar cooling system under study consists of four subsystems, namely silica gel/water adsorption chiller, solar thermal collector, cooling tower and fan coil unit. The ambient temperature,...

A two-dimensional (2-D) modeling of the burning process of Jordanian oil shale in a circulating fluidized bed (CFB) burner was done in this study. The governing equations of continuity, momentum, energy, mass diffusion, and chemical combustion reactions kinetics were solved numerically using the finite volume method. The numerical solution was carr...

This research investigates the possibility of power generation from geothermal and solar heat resources in Jordan using Organic Rankine Cycle (ORC). A comprehensive thermodynamic modelling and analysis is done in order to choose the appropriate fluid for the considered application. Fluid selection process using EES software was conducted on sixteen...

This paper presents the potential of energy saving in water pumping system. A sample of 32 pumping units has been chosen randomly for the current work. Measurements of power quality energy loss were performed, using Fluke 437-ii power quality and energy analyzer. It was found that energy losses due to reactive power is about 22% of the total power...

The rapidly growing world energy use has already raised concerns over supply difficulties, exhaustion of energy resources and heavy environmental impacts. The global contribution from buildings towards energy consumption has steadily increased. Jordan relying on importing more than (97%) of its oil needs. The household in Jordan consumes 43% of the...

This study aimed to design and implement a smart automatic cleaning and cooling system for photovoltaic modules to be activated based on power drop resulting from dust accumulation and high temperature conditions. This was tested by installing two side by side identical photovoltaic modules. The first module was equipped with the prototype cleaning...

This research investigates the possibility of power generation from geothermal and solar heat resources in Jordan using Organic Rankine Cycle (ORC). A comprehensive thermodynamic modelling and analysis is done in order to choose the appropriate fluid for the considered application. Fluid selection process using EES software was conducted on sixteen...

This paper describes and evaluates the improvement of solar water disinfection using parabolic trough collectors. The total heterotrophic bacteria count, total coliform Bacteria in addition to the Escherichia coli (E. coli) tests were chosen to be monitored. The water disinfection was achieved by subjecting naturally contaminated water in small, tr...

The Earth houses a vast energy supply in the form of geothermal resources. This energy can be used in several applications. In this work the potential of energy saving using geothermal energy in residential sector in Jordan was investigated. The use of geothermal energy for both domestic hot water and in HVAC systems was studied. Two types of geoth...

Modern building practices often demonstrate little regard for energy efficiency or the larger economic, environmental or social impacts of the built environment. In Jordan, the great development that has been witnessed in the last decades, and the growth of different economic sectors; all are interrelated with the continuously increasing consumptio...

The use of biodiesel as fuel for compression ignition engines in Jordan is gaining more interest. This paper presents a comparative study on the use of new as well as waste oil as source for biodiesel fuel for compression ignition engine. The engine performance and emission characteristics were studied and compared with pure diesel fuel. The result...

Applying the laser-induced phosphorescence technique, the phosphorescence from a phosphor-coated surface can be used for the determination of the surface temperature during hydrocarbon fuel combustion in a porous media burner. A mixture of dysprosium–cerbium double-doped: yttrium aluminium garnet (Dy:Er:YAG) thermographic phosphor powder and an adh...

Experimental investigation of overall performance, efficiency and reliability of five types of solar collectors is carried out. The systems involved in this study are blue and black coating-selective copper, copper, and aluminum collectors in addition to evacuated tubes collectors. The experiments were carried out during April under same conditions...

Solar ponds are large-scale energy collectors with integral heat storage for supplying thermal energy. In the present work, both experimental and numerical parts of solar pond performance under Jordanian climate conditions have been investigated. In the experimental part, an insulated solar pond with a surface area of 3.5 m2 and a depth of 1.0 m wa...

This study presents a comparative energy and emissions analysis of 15 Arab countries. The relation between energy consumption, CO<sub align="right"> 2 </sub> emissions, Gross Domestic Product (GDP), and population is analysed in each of these countries through various energy and CO<sub align="right"> 2 </sub> emission indicators: GDP Per Capita (GD...

In this study a simple low-cost exhaust gas after-treatment filter using limestone was developed and tested on a four cylinder DI diesel engine coupled with dynamometer under variable engine running conditions. Limestone was placed in cast iron housing through which exhaust gases passes. The concentration of both carbon dioxide and nitrogen oxides...

Abstract Three Artificial Neural Network models (Feed forward, Elman, and Nonlinear Auto regressive Exogenous (NARX) networks) were used to find the performance of a thermal energy storage system with and without a phase change material. Previously obtained experimental data was used to train the neural network. Time, mass of water, mass flow rate,...

Jordan has significant oil shale deposits occurring in 26 known localities. Geological surveys indicate that the existing deposits underlie more than 60% of Jordan's territory. The resource consists of 40 to 70 billion tones of oil shale, which may be equivalent to more than 5 million tones of shale oil. Since the 1960s, Jordan has been investigati...

Modern building practices often demonstrate little regard for energy efficiency or the larger economic, environmental or social impacts of the built environment. In Jordan, the great development that has been witnessed in the last decades, and the growth of different economic sectors; all are interrelated with the continuously increasing consumptio...

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In this experimental study, the effect of using a phase change material on the storage capacity of a conventional solar storage system was carried out. This was obtained by using an encapsulated spheres that contained the paraffin wax as a phase change material, this enables the control of the quantity of the phase change material. The quantity of...

A thermodynamic, one?zone, zero?dimensional computational model for a diesel engine is established in which a working fluid consisting of various gas mixtures has been implemented. The results were compared to those which use air as the working fluid with variable specific heats. Most of the parameters that are important for compression ignition en...

Emulsions of diesel and water are often promoted as being able to overcome the difficulty of simultaneously reducing emissions of both oxidises of nitrogen (NOx) and particulate matter from diesel engines. In this work, the performance of an engine together with its effect on environment were tested when engine was powered by both pure diesel and e...

This paper presents diesel engine simulation taking into consideration heat transfer and variable specific heats. A dual Weibe function is used to model the heat release. It was found that early injection timing leads to higher levels of pressure and temperature in the cylinder. Also, it was found that BMEP is more sensitive to equivalence ratio th...

The present study focuses on the effect of pressure and high inlet velocity of turbulent premixed flames on the adiabatic flame temperature of a methane-Air Flame. Turbulent premixed flames are widely spread in technical applications and are used especially in stationary gas turbines for a high-efficient and low emission energy conversion of gaseou...

A water-cooled, four stroke, four cylinder, direct injection diesel engine was used to study the effect of emulsified diesel fuel on the engine performance and on the main pollutant emissions. Emulsified diesel fuels of 0%, 5%, 10%, 15%, 20%, 25% and 30% water by volume were used. The experiments were conducted in the speed range from 1000 to 3000...

This paper uses a neuro-fuzzy interface system (ANFIS) to study the effect of boost pressure on the efficiency, brake mean effective pressure (BMEP), and the brake specific fuel consumption (BSFC) of a single cylinder diesel engine. Experimental data were used as inputs to ANFIS to simulate the engine performance characteristics. The experimental a...

A water-cooled, four stroke, four cylinder, direct injection diesel engine was used to study the effect of emulsified diesel fuel on the engine performance and on the main pollutant emissions. Emulsified diesel fuels of 0%, 5%, 10%, 15%, 20%, 25% and 30% water by volume were used. The experiments were conducted in the speed range from 1000 to 3000...

Previous investigations of the effects of electric fields on flames have shown the potential for stabilizing flames and reducing emissions with comparatively little effort, but were restricted to atmospheric pressure. In the present work the influence of the electric field on premixed turbulent jet flames at increased pressure is investigated. Besi...

This paper investigates the inhibition of oil shale and olive cake dust explosions when they are used as an alternative source of fuel. Special emphasis was given to the effect of particle size of the same material on the maximum permissible oxygen concentration to prevent dust explosion for different concentrations using nitrogen as the diluent ga...

Electric field control of combustion offers the potential of stabilizing flames and reducing emissions with comparatively little effort. Previous investigations of the effects of electric fields on flames were restricted to atmospheric pressure and the question whether field effects persist at higher pressures remained open. In the present work eff...