The influence of micro channel on the performance of low concentrator parabolic collector systems with phase change material
The influence of micro channel on the performance of low concentrator parabolic collector systems with phase change material

Jenan D. Hamdi; Jalal M. Jalil; Ahmed H. Reja

Articles in Press, Corrected Proof, Available Online from 05 February 2024

https://doi.org/10.30684/etj.2024.144040.1619

Abstract
  Increasing global economic development leads to a continuous increase in energy demand, considering the limited conventional resources of energy as well as the impact on the environment ...  Read More ...
Effect of the material properties of the rotor-disc on the performance of eddy current braking systems
Effect of the material properties of the rotor-disc on the performance of eddy current braking systems

Ahmed M. Salman; Jamal A.-K. Mohammed; Farag M. Mohammed

Articles in Press, Corrected Proof, Available Online from 16 February 2024

https://doi.org/10.30684/etj.2024.144221.1625

Abstract
  Failure of traditional brakes occurs due to raised temperatures and the formation of structural fractures caused by wear and strain. For resolving mechanical brake problems, consider ...  Read More ...
Performance enhancement of PV panels by a channel shaped heat exchanger with an electromechanical control
Performance enhancement of PV panels by a channel shaped heat exchanger with an electromechanical control

Hussein A. Idan; Hatam K. Kadhom; Sahar R. Faraj

Articles in Press, Corrected Proof, Available Online from 18 February 2024

https://doi.org/10.30684/etj.2024.143283.1575

Abstract
  Photovoltaic panels are considered one of the important practical applications in converting solar energy into electrical energy, but they suffer from the effect of heat associated ...  Read More ...
Experimental analysis and combustion characteristics of briquettes from different wood in nigeria
Experimental analysis and combustion characteristics of briquettes from different wood in nigeria

Oluwaseyi O. Alabi; Timothy A. Adeyi; Sakiru K. Ekun

Articles in Press, Corrected Proof, Available Online from 28 March 2024

https://doi.org/10.30684/etj.2024.144659.1640

Abstract
  The increasing demand for sustainable and renewable energy sources has prompted extensive research into alternative biomass fuels, particularly in regions like Nigeria, where traditional ...  Read More ...
Phase Change Material in Glazing Windows System: A Review
Phase Change Material in Glazing Windows System: A Review

Mina A. Nsaif; Mounir Baccar; Jalal M. Jalil

Volume 42, Issue 1 , January 2024, , Page 1-17

https://doi.org/10.30684/etj.2023.138089.1381

Abstract
  As far as thermal insulation is concerned, phase change materials (PCM) have a very good potential to be excellent insulation materials due to their thermal properties like low thermal ...  Read More ...
Studying the Influence of Variable Inlet Guide Vane with the Physical Faults on the Performance of Industrial Gas Turbine at Part-Load Operation
Studying the Influence of Variable Inlet Guide Vane with the Physical Faults on the Performance of Industrial Gas Turbine at Part-Load Operation

Waleligne M. Salilew; Zainal A. Abdul Karim; Tamiru A. Lemma

Volume 42, Issue 1 , January 2024, , Page 18-32

https://doi.org/10.30684/etj.2023.139204.1471

Abstract
  This research work presents a gas turbine performance investigation. Researchers have put efforts into this field of study; however, the influence of the concurrence of variable inlet ...  Read More ...
Enhancing the solar still performance using different designs of absorber with heat storage materials and different wick materials: A review
Enhancing the solar still performance using different designs of absorber with heat storage materials and different wick materials: A review

Lujain S. Hyal; Jalal M. Jalil; Abduljabbar O. Hanfash

Volume 42, Issue 1 , January 2024, , Page 33-50

https://doi.org/10.30684/etj.2023.139522.1435

Abstract
  Despite water covering more than two-thirds of the planet, improving potable water production technologies is a significant issue because of the increased demand for treated water. ...  Read More ...
Solar Photovoltaic Thermal Cells Performance Improvement using Jet, Phase Change Material and Nanoparticles Cooling Technology: A review
Solar Photovoltaic Thermal Cells Performance Improvement using Jet, Phase Change Material and Nanoparticles Cooling Technology: A review

Mays N. Shaeli; Monier Baccar; Jalal M. Jalil

Volume 42, Issue 1 , January 2024, , Page 51-64

https://doi.org/10.30684/etj.2023.137599.1379

Abstract
  The cooling of solar photovoltaic (PV) cells is reviewed in this study. The critical analysis aims to increase PV cell life span and electrical efficiency. To improve the caliber of ...  Read More ...
Aerodynamic Characteristics Evaluation of S-Series Airfoils
Aerodynamic Characteristics Evaluation of S-Series Airfoils

Hamzah M. Jaffar; Laith Al-Sadawi; Abdulkareem A. Khudair; Till Biedermann

Volume 42, Issue 1 , January 2024, , Page 65-77

https://doi.org/10.30684/etj.2023.141757.1512

Abstract
  The present study utilizes the commercial software ANSYS-Fluent to explore the influence of the geometry of thick S- S-series airfoil on the near-wake region. Four different S-series ...  Read More ...
Experimental Study of the Double Pipe Heat Exchanger for Heat Transfer and Pressure Drop Characteristics of the Grooved Tube
Experimental Study of the Double Pipe Heat Exchanger for Heat Transfer and Pressure Drop Characteristics of the Grooved Tube

Natiq A. Fadhil; Amer M. Aldabbagh; Falah F. Hatem

Volume 42, Issue 1 , January 2024, , Page 78-89

https://doi.org/10.30684/etj.2023.140948.1477

Abstract
  Experiments are conducted to investigate the heat transfer and pressure drop characteristics of corrugated tubes and rod baffles in a shell-and-tube heat exchanger. One of the effective ...  Read More ...
An Analytical Solution to Buckling of Thick Beams Based on a Cubic Polynomial Shear Deformation Beam Theory
An Analytical Solution to Buckling of Thick Beams Based on a Cubic Polynomial Shear Deformation Beam Theory

Charles Chinwuba Ike

Volume 42, Issue 1 , January 2024, , Page 90-103

https://doi.org/10.30684/etj.2023.142505.1538

Abstract
  This paper presents analytical solutions for the buckling of thick beams. The Bernoulli-Euler beam theory (BEBT) overestimates their critical buckling load. This paper has derived a ...  Read More ...
Application of Discrete Wavelet Transform for Condition Monitoring and Fault Detection in Wind Turbine Blades: An Experimental Study
Application of Discrete Wavelet Transform for Condition Monitoring and Fault Detection in Wind Turbine Blades: An Experimental Study

Ahmed A. Ogaili; Mohsin N. Hamzah; Alaa Ab. Jaber; Ehsan Ghane

Volume 42, Issue 1 , January 2024, , Page 104-116

https://doi.org/10.30684/etj.2023.142023.1516

Abstract
  Effective structural monitoring maximizes efficiency in wind turbines, a crucial renewable energy asset. Using advanced condition monitoring techniques is crucial for reliability. This ...  Read More ...
Investigating the Effect of Electroplated Coatings on Single-Phase Fluid Flow and Heat Transfer in Microchannel
Investigating the Effect of Electroplated Coatings on Single-Phase Fluid Flow and Heat Transfer in Microchannel

Hasan Q. Hussein; Ekhlas M. Fayyadh; Moayed R. Hasan

Volume 42, Issue 1 , January 2024, , Page 117-134

https://doi.org/10.30684/etj.2023.141194.1487

Abstract
  A significant heat flux affects the efficacy and durability of most equipment. Cooling these devices is the primary concern, prompting specialists to propose and investigate various ...  Read More ...
Enhancing Wind Tunnel Computational Simulations of Finite Element Analysis Using Machine Learning-Based Algorithms
Enhancing Wind Tunnel Computational Simulations of Finite Element Analysis Using Machine Learning-Based Algorithms

Luttfi A. Al-Haddad; Alaa A. Jaber; Latif Ibraheem; Sinan A. Al-Haddad; Naseem S. Ibrahim; Fawaz M. Abdulwahed

Volume 42, Issue 1 , January 2024, , Page 135-143

https://doi.org/10.30684/etj.2023.142873.1552

Abstract
  Wind tunnels are essential for examining aircraft model aerodynamics, accurately simulating real-world conditions, and enhancing design and performance evaluations. This study introduces ...  Read More ...
Effect of the Magnetic Field and Exhaust Gas Recirculation on the Performance and Emissions of Biodiesel Engine Coated with Nanoceramics
Effect of the Magnetic Field and Exhaust Gas Recirculation on the Performance and Emissions of Biodiesel Engine Coated with Nanoceramics

Qusai A. Mahdi; Mahmoud A. Mashkour; Ibtihal A. Mahmoud

Volume 42, Issue 1 , January 2024, , Page 144-156

https://doi.org/10.30684/etj.2023.140518.1468

Abstract
  This study investigates the influence of ceramic coating on diesel engine efficiency through comprehensive analysis. The investigation was conducted on a four-stroke Kirloskar TV1 diesel ...  Read More ...
State-of-the-Art Review into Signal Processing and Artificial Intelligence-based Approaches Applied in Gearbox Defect Diagnosis
State-of-the-Art Review into Signal Processing and Artificial Intelligence-based Approaches Applied in Gearbox Defect Diagnosis

Asaad A. Dubaish; Alaa A. Jaber

Volume 42, Issue 1 , January 2024, , Page 157-172

https://doi.org/10.30684/etj.2023.142462.1535

Abstract
  Various industrial applications, including rotating and reciprocating machinery, depend on gears. Therefore, a sudden breakdown of the gears could result in substantial financial losses. ...  Read More ...
Analyzing Energy Performance and Assessing Dry Moisture Content of Briquettes through Numerical Investigations
Analyzing Energy Performance and Assessing Dry Moisture Content of Briquettes through Numerical Investigations

Oluwaseyi O. Alabi; Timothy A. Adeyi; Sakiru K. Ekun

Volume 42, Issue 1 , January 2024, , Page 173-182

https://doi.org/10.30684/etj.2023.143782.1608

Abstract
  This study presents a comprehensive numerical investigation into the energy evaluation and determination of dry moisture content of briquettes, a vital aspect of renewable energy production. ...  Read More ...
Numerical Study of the Effect of Thermal Insulation and Window-to-wall Ratio on Reducing the Thermal Loads of the Residential Sector in Iraq
Numerical Study of the Effect of Thermal Insulation and Window-to-wall Ratio on Reducing the Thermal Loads of the Residential Sector in Iraq

Abd A. Hussein; Ahmed A. saleh; Hamdi E. Ahmed

Volume 42, Issue 1 , January 2024, , Page 183-194

https://doi.org/10.30684/etj.2023.143408.1584

Abstract
  The climate change that the world is witnessing has cast a greater shadow on the Middle East. Iraq, one of the region's countries, is experiencing harsh thermal conditions. With the ...  Read More ...
The Electrical and Mechanical Aspects of Aluminum and Copper Resistance Spot Weld Joints
The Electrical and Mechanical Aspects of Aluminum and Copper Resistance Spot Weld Joints

Marwah S. Fakhri; Ibtihal A. Mahmood; Ahmed Al-Mukhtar

Volume 42, Issue 1 , January 2024, , Page 195-205

https://doi.org/10.30684/etj.2023.143734.1606

Abstract
  Resistance spot welding (RSW) is widely used in the automotive industry, particularly for copper-aluminum alloys in electric cars. RSW joint conductivity is crucial for electric vehicles. ...  Read More ...
Improving the charging rate and energy recovery of triplex tube heat storage-based pcm with mono/hybrid nanoparticles
Improving the charging rate and energy recovery of triplex tube heat storage-based pcm with mono/hybrid nanoparticles

Ibrahim E. Sadiq; Sattar Aljabair; AbdulHassan A. Karamallah

Volume 42, Issue 1 , January 2024, , Page 206-231

https://doi.org/10.30684/etj.2023.144438.1631

Abstract
  Latent thermal energy storage systems are widely utilized to match the inequality between heat supply and demand. Despite these systems' wide range of uses in various applications, ...  Read More ...
Numerical investigation of air conditioning system configurations for achieving desired negative pressure in isolation rooms
Numerical investigation of air conditioning system configurations for achieving desired negative pressure in isolation rooms

Elaf S. Barrak; Hasanain M. Hussain; Laith J. Habeeb

Volume 42, Issue 1 , January 2024, , Page 232-247

https://doi.org/10.30684/etj.2023.142987.1553

Abstract
  This paper investigates a novel study about the influence of airflow simulation of an air conditioner (AC) inlet angle impacting negative pressure control in an airborne isolation indoor ...  Read More ...
Mechanical Strength Optimization for the Polylactic Acid Printed Parts in Material Extrusion Process Using Artificial Neural Network
Mechanical Strength Optimization for the Polylactic Acid Printed Parts in Material Extrusion Process Using Artificial Neural Network

Mustafa M. Abdulrazaq; Mohanned M. H. AL-Khafaji; Abdulkader Kadauw

Volume 41, Issue 12 , December 2023, , Page 1539-1551

https://doi.org/10.30684/etj.2023.143270.1573

Abstract
  Material Extrusion technology is one of the most widely used Additive Manufacturing processes due to its simplicity in use, affordable parts fabricating costs, product durability, and ...  Read More ...
Computational Single and Multiphase Approaches to Investigate the Hydrothermal Behavior of Hybrid Nano-fluid in Plain and Wavy Tubes
Computational Single and Multiphase Approaches to Investigate the Hydrothermal Behavior of Hybrid Nano-fluid in Plain and Wavy Tubes

Ahmed S. Habeeb; Sattar Aljabair; AbdulHassan A. Karamallah

Volume 41, Issue 7 , July 2023, , Page 886-903

https://doi.org/10.30684/etj.2023.136449.1316

Abstract
  The newest class of heat transfer improvement is accomplished by using hybrid Nano-fluids. Therefore, the heat transfer and pressure drop of a mixture of Iron oxide (Fe3O4) and Magnesium ...  Read More ...
Experimental and Numerical Study of Spur Gears With Lightening Holes
Experimental and Numerical Study of Spur Gears With Lightening Holes

Almurtadha A. Ahmed; Ali R. Hassan

Volume 41, Issue 7 , July 2023, , Page 904-914

https://doi.org/10.30684/etj.2023.134713.1246

Abstract
  The gear is a very important component of power transmission in a flying vehicle and rotating mechanisms etc... In this paper, the dynamic effect and stresses generated as a result ...  Read More ...
Investigation of Frequency-Domain-Based Vibration Signal Analysis for UAV Unbalance Fault Classification
Investigation of Frequency-Domain-Based Vibration Signal Analysis for UAV Unbalance Fault Classification

Luttfi A. Al-Haddad; Alaa A. Jaber; Paramin Neranon; Sinan A. Al-Haddad

Volume 41, Issue 7 , July 2023, , Page 915-923

https://doi.org/10.30684/etj.2023.137412.1348

Abstract
  The flying reliability of Unmanned Aerial Vehicles (UAVs) and flying robots, which directly determines the operational degree of safety, is becoming more important in recent intelligent ...  Read More ...