World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
40
Citations
4016
World Ranking
7483
National Ranking
6

Hayder A. Dhahad publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Hayder A. Dhahad sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 117 publications — 14th percentile

14% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Hayder A. Dhahad D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Hayder A. Dhahad sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 40 D-Index — 27th percentile

27% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Overview

Hayder A. Dhahad is affiliated with the University of Technology-Iraq in Iraq. Their research focuses primarily on engineering and energy, with significant contributions in subfields such as mechanical engineering, renewable energy, sustainability and the environment, biomedical engineering, materials chemistry, and electrical and electronic engineering.

The scientist has published extensively across various topics. Key areas of their work include:

  • Solar Thermal and Photovoltaic Systems
  • Solar-Powered Water Purification Methods
  • Thermodynamic and Exergetic Analyses of Power and Cooling Systems
  • Biodiesel Production and Applications
  • Advanced Combustion Engine Technologies
  • Membrane Separation Technologies
  • Hybrid Renewable Energy Systems

Their recent publications span from 2021 to 2023. Notable papers include:

  • "Sustainable hydrogen energy in aviation - A narrative review" (2023) published in the International Journal of Hydrogen Energy
  • "Improving the performance of pyramid solar still using rotating four cylinders and three electric heaters" (2021) in Process Safety and Environmental Protection
  • "Green synthesis of bimetallic ZnO-CuO nanoparticles and their cytotoxicity properties" (2021) in Scientific Reports
  • "Experimental investigation of convex tubular solar still performance using wick and nanocomposites" (2021) featured in Case Studies in Thermal Engineering
  • "Nanoparticles for phase change process of water utilizing FEM" (2021) published by the Journal of Molecular Liquids

Frequent co-authors collaborating with Hayder A. Dhahad include:

  • Wissam H. Alawee
  • Yan Cao
  • Ali E. Anqi
  • Mohammed A. Fayad
  • Miqdam T. Chaichan

The scientist's work has been featured repeatedly in several publication venues, including:

  • International Journal of Hydrogen Energy
  • Sustainable Energy Technologies and Assessments
  • Fuel
  • SSRN Electronic Journal
  • Thermal Science and Engineering Progress

Best Publications

  • Improving the performance of pyramid solar still using rotating four cylinders and three electric heaters

    Wissam H. Alawee;Suha A. Mohammed;Hayder A. Dhahad;A.S. Abdullah

  • Experimental investigation of convex tubular solar still performance using wick and nanocomposites

    F.A. Essa;Wissam H. Alawee;Suha A. Mohammed;Hayder A. Dhahad

  • Nanoparticles for phase change process of water utilizing FEM

    Pei-Ying Xiong;Adel Almarashi;Hayder A. Dhahad;Wissam H. Alawee

  • Effect of Ag, Au, TiO2 metallic/metal oxide nanoparticles in double-slope solar stills via thermodynamic and environmental analysis

    Seyed Masoud Parsa;Alireza Yazdani;Hayder Dhahad;Wissam H. Alawee

  • The impact of adding nano-Al2O3 and nano-ZnO to Iraqi diesel fuel in terms of compression ignition engines' performance and emitted pollutants

    Hayder A. Dhahad;Miqdam T. Chaichan

  • RETRACTED: Effect of combined air cooling and nano enhanced phase change materials on thermal management of lithium-ion batteries

    Unknown

  • Improving the performance of pyramid solar distiller using dangled cords of various wick materials: Novel working mechanism of wick

    Wissam H. Alawee;F.A. Essa;Suha A. Mohammed;Hayder A. Dhahad

  • Heat recovery application of nanomaterial with existence of turbulator

    Junhua Li;Wissam H. Alawee;Muhyaddin J.H. Rawa;Hayder A. Dhahad

  • Effects of adding aluminum oxide nanoparticles to butanol-diesel blends on performance, particulate matter, and emission characteristics of diesel engine

    Mohammed A. Fayad;Hayder A. Dhahad

  • A novel hybrid biomass-solar driven triple combined power cycle integrated with hydrogen production: Multi-objective optimization based on power cost and CO2 emission

    Yan Cao;Hayder A. Dhahad;Hussein Togun;Ali E. Anqi

  • Seasonal design and multi-objective optimization of a novel biogas-fueled cogeneration application

    Yan Cao;Hayder A. Dhahad;Hussein Togun;Maghsoud Abdollahi Haghghi

  • Thermodynamic and economic assessments and multi-criteria optimization of a novel poly-generation plant using geothermal energy and multi heat recovery technique

    Yan Cao;Hayder A. Dhahad;Hussein Togun;Hasanen M. Hussen

  • Multi-objective bat optimization for a biomass gasifier integrated energy system based on 4E analyses

    Yan Cao;Hayder A. Dhahad;Naeim Farouk;Naeim Farouk;Wei-Feng Xia

  • Proposal and evaluation of two innovative combined gas turbine and ejector refrigeration cycles fueled by biogas: Thermodynamic and optimization analysis

    Yan Cao;Hayder A. Dhahad;Hasanen M. Hussen;Towhid Parikhani

  • Exergetic and economic assessments and multi-objective optimization of a modified solar-powered CCHP system with thermal energy storage

    Yan Cao;Hayder A. Dhahad;Hussein Togun;Maghsoud Abdollahi Haghghi

  • Influence of fuel injection timing strategies on performance, combustion, emissions and particulate matter characteristics fueled with rapeseed methyl ester in modern diesel engine

    Hayder A. Dhahad;Mohammed A. Fayad;Miqdam T. Chaichan;Alaa Abdulhady Jaber

  • Thermo-economic evaluation of a combined Kalina cycle and humidification-dehumidification (HDH) desalination system integrated with thermoelectric generator and solar pond

    Yan Cao;Hayder A. Dhahad;Towhid Parikhani;Ali E. Anqi

  • Nanomaterial transportation and exergy loss modeling incorporating CVFEM

    Pei-Ying Xiong;Adel Almarashi;Hayder A. Dhahad;Wissam H. Alawee

  • Comprehensive thermodynamic and economic analyses and optimization of a novel poly-generation setup utilizing solar and geothermal sources

    Unknown

  • Thermodynamic and thermoeconomic analysis of innovative integration of Kalina and absorption refrigeration cycles for simultaneously cooling and power generation

    Hayder A. Dhahad;Hasanen M. Hussen;Phong Thanh Nguyen;Hadi Ghaebi

  • Role of different antioxidants additions to renewable fuels on NOX emissions reduction and smoke number in direct injection diesel engine

    Hayder A. Dhahad;Mohammed A. Fayad

  • Effect of working fluids in a novel geothermal-based integration of organic-flash and power/cooling generation cycles with hydrogen and freshwater production units

    Yan Cao;Hayder A. Dhahad;Hussein Togun;Hasanen M. Hussen

  • Thermodynamic, economic, and sensitivity analysis of salt gradient solar pond (SGSP) integrated with a low-temperature multi effect desalination (MED): Case study, Iran

    Seyed Masoud Parsa;Mahdi Majidniya;Wissam.H. Alawee;Hayder A. Dhahad

Frequent Co-Authors

Alibek Issakhov
Alibek Issakhov Al-Farabi Kazakh National University
Hussein Togun
Hussein Togun Southern Technical University
Miqdam T. Chaichan
Miqdam T. Chaichan University of Technology- Iraq
Mark Christopher Thompson
Mark Christopher Thompson Monash University
Fadl A. Essa
Fadl A. Essa Kafrelsheikh University
Z.M. Omara
Z.M. Omara Kafrelsheikh University
Mahidzal Dahari
Mahidzal Dahari University of Malaya
Masoud Afrand
Masoud Afrand Islamic Azad University of Najafabad
Hadi Ghaebi
Hadi Ghaebi University of Mohaghegh Ardabili
Yu-Ming Chu
Yu-Ming Chu Huzhou University

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