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Articles 20071 - 20100 of 1103976

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Preparation And Performance Of Pu/Cpsf Blend Ultrafiltration Membranes For Removal Of Heavy Metal Ion Rejection Studies, Latha S., Shanthana Lakshmid, Maheswari P., Mohan D Mar 2026

Preparation And Performance Of Pu/Cpsf Blend Ultrafiltration Membranes For Removal Of Heavy Metal Ion Rejection Studies, Latha S., Shanthana Lakshmid, Maheswari P., Mohan D

Engineering and Technology Journal

The performance of membranes for a specific application can be determined with the help of structural properties such as molecular weight cut-off (MWCO), morphology, and pore statistics. Heavy metal ions from aqueous streams can be separated with the help of ultrafiltration membranes. In the presence and absence of the various components of the additive poly (ethylene glycol) 600, MWCOs and pore statistics of polyurethane (PU) and carboxylated polysulfone (CPSf) blend ultrafiltration (Total Polymer Concentration = 17.5 wt %) were studied with the help of dextran of different molecular weights ranging from 19 kDa to 150 kDa. The derived pore size, …

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Produced Water Deoxygenation Via Nitrogen Purging Scheme– Parametric Study – Part 2, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri Mar 2026

Produced Water Deoxygenation Via Nitrogen Purging Scheme– Parametric Study – Part 2, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri

Engineering and Technology Journal

In this following up paper, we present our findings by examining a pilot scale gasification column and applying nitrogen purging for samples of produced water grafted with different polyacrylamide concentrations (100 – 500 ppm). Upon applying a semi-batch, counter-current scheme for a series of experiments on packed gas-lift column, zero ppm level of dissolved oxygen (DO) was reached within less than 1 minute of nitrogen purging from the start time applied for solutions with viscosity less than 10 mPa.s and using the inline measuring scheme. However, zero ppm DO level was not reachable when purging produced water (PW) samples grafted …

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Remove Liquid Radioactive Wastes Utilizing Nanofiltration, Ultrafiltration, And Microfiltration Membranes, Alanood Alsarayreh, Taisir Abbas, Saleh Alaswad, Sabad E-Gul, A Bajoga Mar 2026

Remove Liquid Radioactive Wastes Utilizing Nanofiltration, Ultrafiltration, And Microfiltration Membranes, Alanood Alsarayreh, Taisir Abbas, Saleh Alaswad, Sabad E-Gul, A Bajoga

Engineering and Technology Journal

Radioactive waste is generated from fuel cycle processes in nuclear reactors and nuclear power plants (NPPs) in electrical power production, radioisotope manufacturing in nuclear research centers, and medical, industrial, and agricultural applications. Also, natural chain-linked radioisotopes (NORM) are generated from processing and burning fossil fuels and producing oil and natural gas. Therefore, a planned and integrated radioactive waste management strategy must be adopted to protect human health and the environment from the dangers of this waste through published research on a comprehensive radioactive waste management strategy and the testing and dissemination of several treatment options. The main objective is to …

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Hydrodynamic Properties Investigation Of Ebullated Bed Reactor Using Non-Newtonian Liquid, Zahraa Hassan, Asawer Al Wasiti, Zainb Shnain, Peter Philib Mar 2026

Hydrodynamic Properties Investigation Of Ebullated Bed Reactor Using Non-Newtonian Liquid, Zahraa Hassan, Asawer Al Wasiti, Zainb Shnain, Peter Philib

Engineering and Technology Journal

The importance of using EBR has been renewed recently due to the sharp increase in heavy feedstocks sent to refineries and the hydrocracking process. Most of these feedstocks have a non-Newtonian behavior. The performance of this type of reactor using non-Newtonian liquid is complicated and has not been covered well yet. Hence, the present work is devoted to elucidating the effect of the non-Newtonian behavior of fluid on the hydrodynamic properties of a three-phase (gas-liquid-solid) reactor under operating conditions of different values ​​of gas velocity (2, 4, 6) cm/sec, liquid velocity (0.9, 1.39, 1.8, 2.3) cm/sec, and recycle ratio (1.5, …

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Bio-Treatment Technologies Of Produced Water: A Review, Rana Azeez, Firas Al-Zuhairi Mar 2026

Bio-Treatment Technologies Of Produced Water: A Review, Rana Azeez, Firas Al-Zuhairi

Engineering and Technology Journal

Petroleum is a vital source of energy for most human activities. The growth of the oil and gas sector is associated with releasing a significant amount of produced water (PW) from onshore and offshore fields. Thus, undesirable toxic pollutants in produced water have become a major concern for those concerned with environmental issues. Therefore, interest in recycling and beneficial reuse of pollutants has increased due to large amounts of PW. In general, various physical and chemical technologies and bio-treatments for PW or combined between them are applied. Bio-treatment is preferred due to its efficiency and eco-friendly compared with other PW …

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Recent Development In Hydrodynamic And Heat Transfer Characteristics In The Three-Phase Fluidized-Bed System, Omar Mahdy, Amer Abdulrahmn, Jamal Ali Mar 2026

Recent Development In Hydrodynamic And Heat Transfer Characteristics In The Three-Phase Fluidized-Bed System, Omar Mahdy, Amer Abdulrahmn, Jamal Ali

Engineering and Technology Journal

Gas–liquid-solid fluidized beds are broadly utilized in the petrochemical, pharmaceutical, refining, food, biotechnology, and environmental industries. Due to complex phenomena, such as the particle-particle, liquid-particle, particle-bubble interactions, complex hydrodynamics, and heat transfer of three-phase (gas-liquid-solid) fluidized beds, they are incompletely understood. The ability to accurately predict the essential characteristics of the fluidized-bed system, such as hydrodynamics, individual phase mixing, and heat transfer parameters, is necessary for its successful design and operation. This paper investigates the pressure drop, minimum fluidization velocity, phase holdup, heat-transfer coefficient of a fluidized bed reactor, heat transfer studies, CFD simulation, and the effect of these parameters …

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Improved Water-Based Mud Rheological Properties And Shale-Inhibition Behavior By Using Aluminum Oxide And Iron Oxide Nanoparticles, Hasan Abbood, Ibtehal Shakir Mar 2026

Improved Water-Based Mud Rheological Properties And Shale-Inhibition Behavior By Using Aluminum Oxide And Iron Oxide Nanoparticles, Hasan Abbood, Ibtehal Shakir

Engineering and Technology Journal

Nanotechnology can be used to develop drilling fluid additives that can improve the drilling fluid's properties. Using two types of nanoparticle (NP) additives in water-based drilling fluids have been studied in this paper. Three major drilling mud systems, namely potassium chloride (KCl) as a basic mud, KCl/aluminum oxide (Al2O3) NPs, and KCl/iron (Fe2O3) NPs, were prepared and studied for enhancement of rheological properties and shale inhibition. It was found that the drilling mud contained NPs in concentrations of 0.25, 0. 5, 0.75, and 1 g. Al2O3 and Fe2O3 NPs added to KCl/polymer mud systems resulted in a 50% and 30% …

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Hydroisomerization Of N-Heptane In A Fixed-Bed Reactor Using A Synthesized Bimetallic Type-Hy Zeolite Catalyst, Younus Khalaf, Bashir Sherhan, Zaidoon Shakour Mar 2026

Hydroisomerization Of N-Heptane In A Fixed-Bed Reactor Using A Synthesized Bimetallic Type-Hy Zeolite Catalyst, Younus Khalaf, Bashir Sherhan, Zaidoon Shakour

Engineering and Technology Journal

The synthesis of NaY-zeolite was performed hydrothermally. The preparation of the bifunctional catalysts was achieved by loading NH4Y-zeolite with a cheap Zr metal, as a second loading metal, with tiny amounts of Pt to compose a Pt-Zr/Y-zeolite catalyst. Different characterization methods (i.e., XRD, SEM, EDX, BET, and AFM) were used to investigate the catalyst properties. The catalytic performance was studied by performing the hydroisomerization of n-heptane in a gas phase at a temperature of 275°C and atmospheric pressure in a fixed-bed reactor. The GC-FID results of the products confirmed the positive role of Zr in enhancing the catalytic features, as …

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Desulfurization Of Real Diesel Fuel Onto Mesoporous Silica Mcm-41 Implementing Batch Adsorption Process: Equilibrium, Kinetics, And Thermodynamic Studies, Ammar Kadhum, Talib Albayati Mar 2026

Desulfurization Of Real Diesel Fuel Onto Mesoporous Silica Mcm-41 Implementing Batch Adsorption Process: Equilibrium, Kinetics, And Thermodynamic Studies, Ammar Kadhum, Talib Albayati

Engineering and Technology Journal

In the current work, sulfur was removed from actual diesel fuel containing 1.2 wt.% sulfur from the Al-Dura Oil Refinery (Iraq), which was studied using adsorption desulfurization with the spherical mesoporous silica MCM-41. This study investigated the effects of different operating conditions, including the dose of MCM-41 (0.04-0.2 gm), time (60-180 min), and temperature (30-70°C). The optimal working conditions were determined to be 0.4 gm MCM-41, 180 min, and 70°C. After exploring the isotherm models of Langmuir, Freundlich, and Temkin, Temkin models with a correlation coefficient (R2 = 0.9996) were selected to best represent the stable data. The kinetics of …

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Use Of Tio2 In Photocatalysis For Air Purification And Wastewater Treatment: A Review, Seba Mohammed, Zainab Shnain, Mohammad Abid Mar 2026

Use Of Tio2 In Photocatalysis For Air Purification And Wastewater Treatment: A Review, Seba Mohammed, Zainab Shnain, Mohammad Abid

Engineering and Technology Journal

This study reviews recent research on the synthesis and application of titanium dioxide (TiO2)-based photocatalysts for environmental applications. The principles of non-homogenous photo-catalysis include utilizing a solid semiconductor, such as titanium dioxide Nano or macro, to form a stable suspension (heterogeneous phase) at the impact of irradiation to elevate a reaction at the surface interface of the different phases in the system. Recently, titanium dioxide has been considered the better semiconductor in non-homogenous photoinduced treatment. TiO2-based photocatalysts have broad applications for industrial processes because of their exceptional physicochemical properties. Nevertheless, having a narrow band near the ultraviolet region limits its …

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New Developments In Inhibition Of The Sweet Environment In A Variety Of Corrosive Media: A Review, Wasan Hameed, Khalid Rashid, Anees Khadom Mar 2026

New Developments In Inhibition Of The Sweet Environment In A Variety Of Corrosive Media: A Review, Wasan Hameed, Khalid Rashid, Anees Khadom

Engineering and Technology Journal

This paper aims to look at how pipeline steel and crude oil storage tanks resist corrosion in aqueous carbon dioxide (CO2) environments. To this aim, we have studied different inhibitors, particularly the heterocyclic inhibitor, which is used to prevent mild steel corrosion in various situations. On mild steel, the corrosion-prevention mechanism of heterocyclic inhibitors is also investigated. CO2 corrosion is the most frequent and dreaded type of corrosion in the oil and gas industry, and corrosion inhibitors are the most effective way to fight CO2 corrosion in mild steel. Nonetheless, continual exposure to pollutants and corrosion causes such as sulfur …

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Experimental Investigation On Heat Transfer In A Gas-Solid Fluidized Bed With A Bundle Of Heat Exchanging Tubes, Zahraa W. Hasan, Jamal Ali, Abbas Sultan, Laith Sabri, Maryam Tariq, Hussein Ghalib, Muthanna Al-Dahhan Mar 2026

Experimental Investigation On Heat Transfer In A Gas-Solid Fluidized Bed With A Bundle Of Heat Exchanging Tubes, Zahraa W. Hasan, Jamal Ali, Abbas Sultan, Laith Sabri, Maryam Tariq, Hussein Ghalib, Muthanna Al-Dahhan

Engineering and Technology Journal

A fluidized bed reactor is commonly used for highly exothermic reactions for different chemical industrial processes. However, inefficient removal of the generated heat due to the exothermic reaction can seriously influence reactor performance. Hence, quantifying and understanding the heat transfer phenomena in this reactor is essential to enhance the performance of the reactor and consequently the chemical process. To achieve a better quantification and understanding of the heat transport in this reactor, an advanced heat transfer technique has been used in this study to quantify the impact of the presence of the cooling tubes on the local heat transfer coefficient …

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Produced Water Deoxygenation: Investigation Of Nitrogen Purging Scheme– Parametric Study – Part1, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri Mar 2026

Produced Water Deoxygenation: Investigation Of Nitrogen Purging Scheme– Parametric Study – Part1, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri

Engineering and Technology Journal

Produced water (PW) is water that comes out of the well with the crude oil during crude oil production. The quality of produced water varies significantly based on the geochemistry of the producing formation, the type of hydrocarbon produced, and the characteristics of the producing well. A well-known obstacle hindering the re-use of the produced water, in different sectors, is the high content of dissolved oxygen (DO) as it can cause corrosion and polymer degradation. In this study, we report the experimental investigations for de-oxygenating samples of PW collected from Omani oil fields via a gas lift unpacked and packed …

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Theory And Modeling Of Slab Waveguide Based Surface Plasmon Resonance, Amnah Hasan, Razi Al-Azawi, Ali Alwahib Mar 2026

Theory And Modeling Of Slab Waveguide Based Surface Plasmon Resonance, Amnah Hasan, Razi Al-Azawi, Ali Alwahib

Engineering and Technology Journal

The current study proposes a developing surface plasmon resonance (SPR) sensor that has been widely employed to detect viruses, such as environmental analytes, biological and chemical analytes, and monitoring and medical diagnostics. Optical waveguides have much potential for developing new chemical and biological sensors. Graphene is the world's most vital substance and can be used to enhance other materials. A composite silver film-based SPR sensor with the waveguide. To enhance the silver film's stability, detect the best thickness with the best resonance using different types of analyte: air than 1.1, 1.2, 1.3, and water. The resonance wavelength numerically calculated, loss, …

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High Gain Transformer-Less Inverter Based-On Capacitor Clamping Multi-Phase Boost Converter, Oday Saad, Jasim Hussain Mar 2026

High Gain Transformer-Less Inverter Based-On Capacitor Clamping Multi-Phase Boost Converter, Oday Saad, Jasim Hussain

Engineering and Technology Journal

ABSTRACTThe boosting converters integrated with inverters are widespread use in many applications under transformerless inverter titles, including powered vehicles, PV systems, fuel cells systems and so on. Reliability, quality, maintainability, and reduction in size are important requirements in the energy conversion process. The multi-phase boost converter can be adopted as a good solution with high power applications. The multi-phase boost enhanced by clamping capacitor structure is providing low ripple, high gain and evident improvement in the efficiency when compared to the conventional converters. This paper investigates the transformerless inverter based on a capacitor clamping multi-phase boost converter. High gain proposed …

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A Compact High Isolation Four Elements Mimo Antenna System For 5g Mobile Devices, Muhannad Muhsin, Jawad Ali, Ali Salim Mar 2026

A Compact High Isolation Four Elements Mimo Antenna System For 5g Mobile Devices, Muhannad Muhsin, Jawad Ali, Ali Salim

Engineering and Technology Journal

A Compact high isolation Multi Input Multi Output Antenna system working on 3.5 GHz (3400 - 3600) MHz is presented for the 5G mobile terminals. Four-antenna elements are employed to construct the proposed MIMO antenna system. These antennas are located over two slim side-edges frame of a mobile device to meet the present trend requirements of slim and full-screen smartphone devices. A modified Hilbert fractal monopole antenna and an I-shaped feeding line construct the antenna element’s front part, while an L-shaped shorted to the system’s ground plane are used to the antenna element’s back part. The overall monopole antenna element’s …

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Build And Implement Radiation Control Using Iot In Parabolic Trough Solar Collector (Ptsc), Sarah Bassem, Samer Ismael, Jalal Jalil Mar 2026

Build And Implement Radiation Control Using Iot In Parabolic Trough Solar Collector (Ptsc), Sarah Bassem, Samer Ismael, Jalal Jalil

Engineering and Technology Journal

Connecting the devices to the internet based on the internet of things IoT increases the capability of monitoring and measuring, and controlling essential variables. In this study, the radiation intensity was controlled via the internet of things IoT for PTSC to study the collector's behavior.  The light control circuit was designed, built, and implemented. The circuit mainly consists of a power supply, Arduino, relay, and potentiometer. Radiation was successfully monitored using a sensor and displayed through a smartphone via Wi-Fi, and the intensity of radiation light controls the PCM status. A data logging system was applied using a micro SD …

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The Evaluation Of Time-Dependent Initialization Vector Advanced Encryption Standard Algorithm For Image Encryption, Hayder Assafli, Ivan Hashim, Ahmed Naser Mar 2026

The Evaluation Of Time-Dependent Initialization Vector Advanced Encryption Standard Algorithm For Image Encryption, Hayder Assafli, Ivan Hashim, Ahmed Naser

Engineering and Technology Journal

The Advanced Encryption Standard (AES) has become an attractive encryption method for its high security and fast implementation. The encryption algorithm is approved as a standard to be used in widely used communication and data processing units However, the advance in technology and the introduction of quantum computers made the encryption scheme vulnerable to attack. Different attack procedures are continuously being developed for attacking end decrypted important and sensitive data. This paper evaluated an enhanced Advanced Encryption System operating in Cipher Block Chaining mode that suggests a promising solution for resisting future attacks. The approach depends on a time-dependent initialization …

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A Review Of Control Technique Applied In Shunt Active Power Filter (Sapf), Ayad Hadi, Ekhlas Thjeel, Ali Nahar Mar 2026

A Review Of Control Technique Applied In Shunt Active Power Filter (Sapf), Ayad Hadi, Ekhlas Thjeel, Ali Nahar

Engineering and Technology Journal

In recent years, electronic transformers and electronic devices (nonlinear loads) have increased. These loads are the source of harmonics (non-sinusoidal and distorted waves) and the interactive force that affects the performance of the power system network. Also, it badly affects the power factor and electrical energy on the scales of efficiency and quality. For this reason, a system called “Active Power Filters” has been adopted. It provides an effective alternative to traditional LC passive power filters. It can improve network performance by treating and reducing harmonics, improving power factor and quality, avoiding resonance between the filter and the network, and …

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The Fundamental Of Reduced Graphene Oxide With Nanosilver Composite Films Using The Spin Coating Technique, Hamsa Alaloosi, Farah Noori, Abdulhadi Jidran Mar 2026

The Fundamental Of Reduced Graphene Oxide With Nanosilver Composite Films Using The Spin Coating Technique, Hamsa Alaloosi, Farah Noori, Abdulhadi Jidran

Engineering and Technology Journal

Graphene oxide synthesis by hummers method and reduction by the green chemical method using green tea. Preparation films with reduced graphene oxide (rGO) and Silver Nanoparticles (AgNPs) by a spin coating method. The preparation films and Nanomaterial characteristics with X-Ray diffraction (XRD) GO has a peak at (2θ = 11.22̊ ). While rGO has a wider peak at (2θ = 26.2̊ ). The (rGO +AgNPs) films have five obvious diffraction angles. In Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX), flaky sheet (rGO), and spherical (AgNPs) with Nanosize about ~20 nm, the peaks of EDX indicated the presence of …

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The Visual Quality Of Healthy Eye Lens For Different Tilt Effects, Laith Tawfeeq, Ali Al-Hamdani Mar 2026

The Visual Quality Of Healthy Eye Lens For Different Tilt Effects, Laith Tawfeeq, Ali Al-Hamdani

Engineering and Technology Journal

The importance and accuracy of the human visual system have led scientists and researchers to do their best to study it, know its problems, and how to treat them.The eye lens tilt is possibly due to a specific accident such as a blow or the like. So, this manuscript was submitted to study the human eye lens tilting effect on visual performance and determine the tolerance tilt values. Using (ZEMAX-EE) software program and relying on the Liou and Brennan model Eye (LBME), one of the most accurate models for studying the eye, and some basic criteria used to describe the …

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Power Quality Examination For (250kw) Pv Grid-Tied Connected At Various Irradiance Levels, Ahmed Jasim, Dahri Mahmood, Oday Ahmed Mar 2026

Power Quality Examination For (250kw) Pv Grid-Tied Connected At Various Irradiance Levels, Ahmed Jasim, Dahri Mahmood, Oday Ahmed

Engineering and Technology Journal

Although using a PV grid-tide system has many advantages, connecting the PV to the grid creates a new challenge at the power quality level. The PV grid-tide plant (250 kW), implemented at the Iraqi ministry of electricity building, was taken as a case steady to examine the power quality issue at various irradiance levels. The plant was described in detail and built using MATLAB2018b/Simulink. The developed system was examined at various irradiance levels. The results showed that an increased irradiance level leads to an enhancement in the power quality. The total harmonic distortion (THD) decreases with the increase of irradiance. …

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An Enhanced Interface Selectivity Technique To Improve The Qos For The Multi-Homed Node, Haider Oleiwi, Nagham Saeed, Heba Al-Taie, Doaa Mhawi Mar 2026

An Enhanced Interface Selectivity Technique To Improve The Qos For The Multi-Homed Node, Haider Oleiwi, Nagham Saeed, Heba Al-Taie, Doaa Mhawi

Engineering and Technology Journal

The user’s handoff is still an arguable issue that many mobile communication systems face, especially with the exploded growth of users and internet-based applications. There is a critical need for adequate quality of service (QoS) to meet the stringent requirements. This paper aims to study the overall performance and feasibility of several QoS mechanisms with the single-homed and multi-homed networks/nodes fluctuating resource availability. It investigates the adaptability of multi-interfaced multi-homed techniques to enhance the essential governing parameters, i.e., throughput, end-to-end latency, processing time, and jitter. Moreover, the paper introduces an interface selectivity technique for the multi-homed node to adopt the …

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Numerical And Theoretical Analysis Of A Spur Gear Using Composite And Conventional Materials, Jwan Mohammed, Dlair Ramadan Mar 2026

Numerical And Theoretical Analysis Of A Spur Gear Using Composite And Conventional Materials, Jwan Mohammed, Dlair Ramadan

Engineering and Technology Journal

A spur gear is one of the most common forms of precision cylindrical gear. In the industry, reducing the weight of gears while keeping their useful properties has become an even more pressing challenge. As a result, the investigators have made many attempts to reduce the weight of the gears. Despite these efforts, the problem still requires more research. This study presented a spur gear's modeling and finite element analysis using different materials. A three-dimensional spur gear was designed, modeled, and simulated using ANSYS software. Five different materials, including two conventional materials (stainless steel and copper alloy) and three different …

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Potential And Development Of Horizontal Axis Wind Turbine Systems And Technologies: A Review, Mohammed Habib, Abdullateef Jadallah, Ahmed Hussein Mar 2026

Potential And Development Of Horizontal Axis Wind Turbine Systems And Technologies: A Review, Mohammed Habib, Abdullateef Jadallah, Ahmed Hussein

Engineering and Technology Journal

Wind energy has a potency of playing a vital role in the future of energy demand providing and environment freshening in many areas of the world. Utilizing wind turbine systems has become a competitive recourse among other renewable energy sources in terms of cost-effectiveness and the transition toward renewable energy usage. Researchers and developers are constantly dedicated to innovating to improve the technology of designing wind turbine systems. Wind energy depends mainly on the wind velocity and the area that swept them, increasing the wetted area. This is done by either upscaling the area of the wind rotor or constructing …

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Experimental Study On The Effect Of Aspect Ratio On Flexural Behavior Of Aluminum Sandwich Composite, Ganesh Radhakrishnan, Al Haitham Al Hattali, Al Muntasser Al Yahyai, Al Muntasser Al Riyami, Al Muatasim Al Hadhrami Mar 2026

Experimental Study On The Effect Of Aspect Ratio On Flexural Behavior Of Aluminum Sandwich Composite, Ganesh Radhakrishnan, Al Haitham Al Hattali, Al Muntasser Al Yahyai, Al Muntasser Al Riyami, Al Muatasim Al Hadhrami

Engineering and Technology Journal

Sandwich composites are one such kind of light-weight composites developed for structural and vehicle body buildings etc. Due to their remarkable features such as high specific strength, high toughness and resistance to inter laminar shear strength. In this study, commercially available aluminium sandwich composite (ASC) laminate was considered for investigating its flexural behavior and buckling behavior as it was mostly used for various structural applications. Flexural analysis was done for different aspect ratios in order to analyze the influence of cross section of the specimen and support span on the flexural capability of the sandwich beam. The composite specimens prepared …

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Study Effect Of Exhaust Gas Recirculation Upon Emissions And Performance By Using European Diesel And Iraqi Diesel, Lina Jamal, Adel Saleh Mar 2026

Study Effect Of Exhaust Gas Recirculation Upon Emissions And Performance By Using European Diesel And Iraqi Diesel, Lina Jamal, Adel Saleh

Engineering and Technology Journal

This study investigated the effect of exhaust gas re-circulation (EGR) on performance and exhaust emissions in a single-cylinder, air-cooled, and direct-injection diesel engine. The Iraqi diesel fuel (D100) and European diesel fuel (ED100) were utilized at different speeds from (2100 to 3300 in intervals of 300) using the recycling of exhaust gas by a ratio (0%, 5%, 10%, 15%, and 20%. The study showed that European diesel fuel positively impacts engine performance and emissions. Compared to Iraqi diesel fuel, European decreased diesel fuel the brake-specific fuel consumption by (10.96%), increased brake thermal efficiency by (8.67%), decreased exhaust gas temperature by …

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Economic Operation Of Low Voltage Smart Micro-Grid With Integration Of Renewable Energy, Kadhim Jabber, Mohammed Al-Saadi, Ameer Jaddoa Mar 2026

Economic Operation Of Low Voltage Smart Micro-Grid With Integration Of Renewable Energy, Kadhim Jabber, Mohammed Al-Saadi, Ameer Jaddoa

Engineering and Technology Journal

This paper develops a unit commitment multi-period energy management system to minimize a low voltage microgrid's total operation and emission cost. The optimization problem is formulated in the mixed-integer quadratic program. The environment cost and battery degradation cost are taken into consideration in the proposed optimization approach. The unit commitment strategy is employed to minimize the total cost. A set of constraints are considered in the proposed optimization approach. The proposed energy management system is applied to the low voltage distribution grid, including different distributed generators, such as diesel engines, fuel cells, and microturbines. The microgrid also contains storage batteries, …

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Study Of The Effect Of Working Fluids On The Thermal Performance Of A Horizontal Heat Pipe With Stainless Steel Wick, Ali Soud, Qusay Abdul Ghafoor Mar 2026

Study Of The Effect Of Working Fluids On The Thermal Performance Of A Horizontal Heat Pipe With Stainless Steel Wick, Ali Soud, Qusay Abdul Ghafoor

Engineering and Technology Journal

The present work aims to study the effects of working fluids on the thermal performance of the heat pipe with a wick and in a horizontal position. The experiments were conducted using a copper heat pipe with a 20.8 mm inner diameter, and the length of the evaporator, condenser, and the adiabatic regions were 300 mm, 350 mm, and 300 mm, respectively. The working fluids selected were water, Methanol, ethanol, and different binary mixtures (50: 50) %, (30: 70) %, (70: 30) % mixing ratios. The filling ratio was 50% of the evaporator volume for all working fluids, and the …

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Numerical Investigation Of A Window Solar Air Collector With Moveable Absorber Plates, Norhan Dawood, Jalal Jalil, Majida Ahmed Mar 2026

Numerical Investigation Of A Window Solar Air Collector With Moveable Absorber Plates, Norhan Dawood, Jalal Jalil, Majida Ahmed

Engineering and Technology Journal

Window solar air collector is an imperative instrument for heating residential buildings in cold regions. This paper presents a numerical investigation of the thermal performance of a window solar air collector with seven moveable absorber plates. With glass on the front and back sides of the collector. By the use of FORTRAN 90; The three-dimensional steady-state turbulent forced convection method was used to solve the Navier-Stokes equations. The seven plates opened and closed at different angles in unison manually by a specific mechanical mechanism. The effect of changing the plate angles has been tested, alongside the effect of airflow rates …

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