Research Paper
Heat Pipe Thermal Performance Analysis by Using Different Working Fluids
Heat Pipe Thermal Performance Analysis by Using Different Working Fluids

Ali K. Soud; Qusay J. Abdul Ghafoor; Akeel A. Nazzal

Volume 41, Issue 1 , January 2023, Page 1-12

https://doi.org/10.30684/etj.2022.132052.1086

Abstract
  This study investigated the thermal performance of the heat pipe and conducted on the effects of working fluids with wick and vertical position. The experiments were conducted using ...  Read More ...
Research Paper
Modal Analysis of Specific Composite Sandwich Structures
Modal Analysis of Specific Composite Sandwich Structures

Mustafa S. Al-Khazraji; Sadeq H. Bakhy; Muhsin J. Jweeg

Volume 41, Issue 1 , January 2023, Page 13-22

https://doi.org/10.30684/etj.2022.133585.1195

Abstract
  Composite sandwich structures are gaining attention due to their inherent properties, such as lightweight, low density, and high strength. The forced vibration response of these structures ...  Read More ...
Research Paper
Numerical Investigation of Thermal-Hydraulic Performance of Printed Circuit Heat Exchanger with Different Fin Shape Inserts
Numerical Investigation of Thermal-Hydraulic Performance of Printed Circuit Heat Exchanger with Different Fin Shape Inserts

Ali M. Aljelawy; Amer M. Aldabbagh; Falah F. Hatem

Volume 41, Issue 1 , January 2023, Page 23-36

https://doi.org/10.30684/etj.2022.132688.1137

Abstract
  The printed circuit heat exchanger is one of the most recent important heat exchangers, especially in the nuclear power plant and aerospace applications, due to its very compact geometry ...  Read More ...
Research Paper
Design and Implementation of a Smart Greenhouse Automated and Conditioned by Solar Power System
Design and Implementation of a Smart Greenhouse Automated and Conditioned by Solar Power System

Sura H. Hassan; Abdullateef A. Jadallah; Ghassan A. Bilal

Volume 41, Issue 1 , January 2023, Page 37-44

https://doi.org/10.30684/etj.2021.131279.1024

Abstract
  Photosynthesis requires additional energy. Such energy can be obtained by building a greenhouse, which traps sunlight's heat. The primary challenge in greenhouse growing is stabilizing ...  Read More ...
Research Paper
Study the Performance of a Novel Desiccant Heat Exchanger
Study the Performance of a Novel Desiccant Heat Exchanger

Hind M. Taresh; Amar S. Abdul-Zahra; Ahmed A. M. Saleh

Volume 41, Issue 1 , January 2023, Page 45-59

https://doi.org/10.30684/etj.2022.134120.1221

Abstract
  Conserving energy and reducing emissions has become a global consensus. However, most air conditioning systems are highly energy-consuming, affecting global warming and the ozone layer ...  Read More ...
Review Paper
A comparative study between two lubrication nano-additives (Bi2O3 & TiO2) based on vibration response analysis
A comparative study between two lubrication nano-additives (Bi2O3 & TiO2) based on vibration response analysis

Sarah S. Jaffar; Wafa A. Soud; Ihsan A. Baqer

Volume 41, Issue 1 , January 2023, Page 60-68

https://doi.org/10.30684/etj.2022.133013.1162

Abstract
  The purpose of this paper is to present a vibration monitoring analysis of a hydrodynamic journal bearing working with nano-additives lubricants.The vibration response is generated ...  Read More ...
Research Paper
Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape
Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape

Noor F.A. Hamza; Sattar Aljabair

Volume 41, Issue 1 , January 2023, Page 69-85

https://doi.org/10.30684/etj.2022.131909.1069

Abstract
  This paper presents an experimental and numerical study to investigate the heat transfer enhancement in a horizontal circular tube using hybrid nanofluid (CuO, Al₂O₃/ distilled ...  Read More ...
Research Paper
Bearings Health Monitoring Based on Frequency-Domain Vibration Signals Analysis
Bearings Health Monitoring Based on Frequency-Domain Vibration Signals Analysis

Saja M. Jawad; Alaa A. Jaber

Volume 41, Issue 1 , January 2023, Page 86-95

https://doi.org/10.30684/etj.2022.131581.1043

Abstract
  Rotating machine health monitoring is critical for system safety, cost savings, and increased reliability. The need for a simple and accurate fault diagnosis method has led to the development ...  Read More ...
Research Paper
Dynamic Response Analysis of the Rotor Using the Jeffcott Method and Performance Improvement Using Active Magnetic Bearing
Dynamic Response Analysis of the Rotor Using the Jeffcott Method and Performance Improvement Using Active Magnetic Bearing

Karrar B. Tuaib; Qasim A. Atiyah; Imad A. Abdulsahib

Volume 41, Issue 1 , January 2023, Page 96-109

https://doi.org/10.30684/etj.2022.133607.1196

Abstract
  The most common component of mechanical systems today is rotating machines. In these systems, vibration is caused by rotating components. As a result, to decrease the amplitude of vibrations ...  Read More ...
Research Paper
Optimization Process of Double Spots Welding of High Strength Steel Using in the Automotive Industry
Optimization Process of Double Spots Welding of High Strength Steel Using in the Automotive Industry

Hayder H. Khaleel; Ibtihal A. Mahmood; Fuad Khoshnaw

Volume 41, Issue 1 , January 2023, Page 110-120

https://doi.org/10.30684/etj.2022.134325.1236

Abstract
  Resistance Spot Welding (RSW) is one of the most important welding techniques used in the automotive industry because it is an economic process and is suitable for many materials. Many ...  Read More ...
Review Paper
Effects of Magnetic Field on the Performance of Solar Distillers: A Review Study
Effects of Magnetic Field on the Performance of Solar Distillers: A Review Study

Wissam H. ِAlawee; Karrar A. Hammoodi; Hayder A. Dhahad; Z.M. Omara; Fadl A. Essa; A.S. Abdullah; M I. Amro

Volume 41, Issue 1 , January 2023, Page 121-131

https://doi.org/10.30684/etj.2022.134576.1240

Abstract
  Due to the rising demand for treated water, the enhancement of potable water yield technologies, such as traditional solar distillers, is a pressing concern. Solar desalination is one ...  Read More ...
Research Paper
Numerical Simulation of Powering Turbofan Propulsion Aircraft with Electricity
Numerical Simulation of Powering Turbofan Propulsion Aircraft with Electricity

Thomas O. Onah; Christian C. Aka; Bethrand N. Nwankwojike

Volume 41, Issue 1 , January 2023, Page 132-141

https://doi.org/10.30684/etj.2022.133963.1214

Abstract
  The gas turbine-based propulsion systems were responsible for the emission of pollutants that damage the ecosphere. Commercial aviation represented a large portion of carbon emissions ...  Read More ...
Research Paper
Determination of Impingement Cooling Fluid Temperature-Time Profile For Extracted Tiger-Nut Juice (Cyperus Esculentus) By Lumped Thermal Mass Analysis
Determination of Impingement Cooling Fluid Temperature-Time Profile For Extracted Tiger-Nut Juice (Cyperus Esculentus) By Lumped Thermal Mass Analysis

Nwankwo, Michael Azubuike; Onah Thomas Okechukwu; Egwuagu Michael Onyekachi

Volume 41, Issue 1 , January 2023, Page 142-150

https://doi.org/10.30684/etj.2022.134483.1239

Abstract
  Determination of Temperature-Time Profile by the Lumped thermal mass analysis (LTMA) method using Tiger-Nut Juice as the impinging fluid on the cooling system was carried out. With ...  Read More ...
Research Paper
Determination of Draught Requirement of Single-furrow Mouldboard Plough in Sandy Loam Soil in Yola, Northeastern Nigeria
Determination of Draught Requirement of Single-furrow Mouldboard Plough in Sandy Loam Soil in Yola, Northeastern Nigeria

Kabri, H. U.

Volume 41, Issue 1 , January 2023, Page 151-158

https://doi.org/10.30684/etj.2022.133807.1206

Abstract
  The draught requirement of a single-furrow animal-drawn mouldboard plough implement was determined on sandy loam soils from June to July 2021 at Modibbo Adama University, Yola. The ...  Read More ...
Research Paper
Investigation of Offshore Wind Turbine Structure Deflection Using Experimental Work, Numerical, and Theoretical Approach
Investigation of Offshore Wind Turbine Structure Deflection Using Experimental Work, Numerical, and Theoretical Approach

Hayder M. Ali; Hassan M. Alwan; Israa Al-Esbe; Kochneva O. V

Volume 41, Issue 1 , January 2023, Page 159-175

https://doi.org/10.30684/etj.2022.133645.1199

Abstract
  Electrical energy from offshore wind turbines is an important source of clean, renewable energy production. One of the reasons for the low efficiency of wind turbines is the change ...  Read More ...
Research Paper
Thermal Performance of a Counter-Flow Double-Pass Solar Air Heater With The Steady and Pulsating Flow
Thermal Performance of a Counter-Flow Double-Pass Solar Air Heater With The Steady and Pulsating Flow

Nassr F. Hussein; Sabah T. Ahmed; Ali L. Ekaid

Volume 41, Issue 1 , January 2023, Page 176-184

https://doi.org/10.30684/etj.2022.135475.1274

Abstract
  The present work studied the influence of pulsating flow as an active method on the thermal performance of a double-pass solar air heater with a tubular solar absorber. A ball valve ...  Read More ...
Review Paper
Thermoelectric Generators as a Heat Recovery System for Exhaust Gases of Vehicles Driving at Low Speeds
Thermoelectric Generators as a Heat Recovery System for Exhaust Gases of Vehicles Driving at Low Speeds

A. Al-Janabi; O. Al Salmi; E. Al Subhi; A. Al Hadhrami

Volume 41, Issue 1 , January 2023, Page 185-195

https://doi.org/10.30684/etj.2022.134206.1253

Abstract
  To save the environment and utilize the waste heat associated with exhaust gases of internal combustion engines, it is crucial to design an efficient system that can recover this heat ...  Read More ...
Research Paper
Omnidirectional Mobil Robot with Navigation Using SLAM
Omnidirectional Mobil Robot with Navigation Using SLAM

Hiba A. Najim; Iman S. Kareem; Wisam E. Abdul-Lateef

Volume 41, Issue 1 , January 2023, Page 196-202

https://doi.org/10.30684/etj.v41i1.2252

Abstract
  As mobile robots have become widespread in indoor environments with narrow and crowded corridors, such as institutions, the demand for mobile robots has recently increased, especially ...  Read More ...
Research Paper
Experimental Study Convection Heat Transfer Inside the Triangular Duct Filled with Porous Media
Experimental Study Convection Heat Transfer Inside the Triangular Duct Filled with Porous Media

Sabah R. Mahdi; Suhad A. Rasheed

Volume 41, Issue 1 , January 2023, Page 203-217

https://doi.org/10.30684/etj.2022.136144.1297

Abstract
  Convection heat transfer inside an empty triangular channel when filled with porous media heated proportionally with a constant heat flux (1300 W/m²) at the Reynolds number range ...  Read More ...
Research Paper
The Effect of Rectangular Grooves on the Lubrication Mechanism in an Inclined Slider Bearing
The Effect of Rectangular Grooves on the Lubrication Mechanism in an Inclined Slider Bearing

Muhannad M.Mrah; Ammar S.Hamid

Volume 41, Issue 1 , January 2023, Page 218-231

https://doi.org/10.30684/etj.2022.136148.1299

Abstract
  This research aims to study the effect of rectangular grooves on the lubrication mechanism in an inclined slider bearing. Reynolds' equation was used in the theory part to calculate ...  Read More ...
Review Paper
The Effect of Eichhornia Crassipes Biodiesel/LPG Dual-Fuel on Performance and Emissions in a Single-Cylinder Compression Ignition Engine
The Effect of Eichhornia Crassipes Biodiesel/LPG Dual-Fuel on Performance and Emissions in a Single-Cylinder Compression Ignition Engine

Hawraa S. Mohammed; Mahmoud A. Mashkour

Volume 41, Issue 1 , January 2023, Page 232-242

https://doi.org/10.30684/etj.2022.135176.1266

Abstract
  This study investigates the effects of Eichhornia Crassipes Biodiesel (ECB) with liquefied petroleum gas (LPG) dual-fuel on diesel engine performance and exhaust emissions characteristics. ...  Read More ...
Research Paper
Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct
Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

karrar Gh. Fadhala; Ekhlas M. Fayyadh; Ali F. Mohammed

Volume 41, Issue 1 , January 2023, Page 243-256

https://doi.org/10.30684/etj.2022.136238.1305

Abstract
  Metal foam is a novel material recently utilized in baffles as an alternative to solid baffles for reducing flow resistance. However, copper foam baffles have been suggested in this ...  Read More ...