World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
35
Citations
4673
World Ranking
9009
National Ranking
52

Armin Hafner 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 Armin Hafner 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: 252 publications — 65th percentile

65% of scientists in this discipline score the same or lower.

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

Armin Hafner 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 Armin Hafner 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: 35 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

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

Overview

Armin Hafner is a researcher affiliated with the Norwegian University of Science and Technology in Norway. Their academic work primarily spans the field of Engineering, with a focus on Mechanical Engineering, Biomedical Engineering, Building and Construction, Renewable Energy, Sustainability and the Environment, and Computational Mechanics.

Their research topics include:

  • Refrigeration and Air Conditioning Technologies
  • Phase Equilibria and Thermodynamics
  • Advanced Thermodynamic Systems and Engines
  • Heat Transfer and Optimization
  • Thermodynamic and Exergetic Analyses of Power and Cooling Systems
  • Heat Transfer and Boiling Studies
  • Building Energy and Comfort Optimization

Frequent co-authors collaborating with Armin Hafner include Krzysztof Banasiak, Ángel Á. Pardiñas, Håkon Selvnes, Ignat Tolstorebrov, and Trygve Magne Eikevik, reflecting a network of interdisciplinary research partnerships.

Their recent publications demonstrate a focus on refrigeration technologies, thermal energy storage, and cooling systems, published in recognized venues. Notable papers include:

  • "Review on cold thermal energy storage applied to refrigeration systems using phase change materials," 2020, Thermal Science and Engineering Progress
  • "Potential evaluation of integrated high temperature heat pumps: A review of recent advances," 2023, Applied Thermal Engineering
  • "An experimental study of an ejector-boosted transcritical R744 refrigeration system including an exergy analysis," 2021, Energy Conversion and Management
  • "A detailed review on CO₂ two-phase ejector flow modeling," 2020, Thermal Science and Engineering Progress
  • "Recent Developments in Cooling Systems and Cooling Management for Electric Motors," 2023, Energies

Armin Hafner's work has been published extensively in several well-regarded scientific journals. Key publication venues where their research frequently appears include Applied Thermal Engineering, Energies, Zenodo (CERN European Organization for Nuclear Research), Thermal Science and Engineering Progress, and the International Journal of Refrigeration.

Best Publications

  • Development of compact heat exchangers for CO2 air-conditioning systems☆

    J Pettersen;A Hafner;G Skaugen;H Rekstad

  • Review on cold thermal energy storage applied to refrigeration systems using phase change materials

    Håkon Selvnes;Yosr Allouche;Raluca Iolanda Manescu;Armin Hafner

  • A computational model of a transcritical R744 ejector based on a homogeneous real fluid approach

    Jacek Smolka;Zbigniew Bulinski;Adam Fic;Andrzej J. Nowak

  • Transcritical R744 refrigeration systems for supermarket applications: Current status and future perspectives.

    Paride Gullo;Armin Hafner;Krzysztof Banasiak

  • Experimental and numerical investigation of the influence of the two-phase ejector geometry on the performance of the R744 heat pump

    Krzysztof Banasiak;Armin Hafner;Trond Andresen

  • Multi-ejector concept for R-744 supermarket refrigeration

    Armin Hafner;Sven Försterling;Krzysztof Banasiak

  • Development and performance mapping of a multi-ejector expansion work recovery pack for R744 vapour compression units.

    Krzysztof Banasiak;Armin Hafner;Ekaterini E. Kriezi;Kenneth B. Madsen

  • 1D Computational model of a two-phase R744 ejector for expansion work recovery.

    Krzysztof Banasiak;Armin Hafner

  • CFD-based shape optimisation of a CO2 two-phase ejector mixing section

    Michal Palacz;Jacek Smolka;Waclaw Kus;Adam Fic

  • Multi-ejector R744 booster refrigerating plant and air conditioning system integration – A theoretical evaluation of energy benefits for supermarket applications

    Paride Gullo;Armin Hafner;Giovanni Cortella

  • Potential evaluation of integrated high temperature heat pumps: A review of recent advances

    Unknown

  • Experimental analysis of the R744 vapour compression rack equipped with the multi-ejector expansion work recovery module

    Michal Haida;Krzysztof Banasiak;Jacek Smolka;Armin Hafner

  • A CFD-based investigation of the energy performance of two-phase R744 ejectors to recover the expansion work in refrigeration systems: An irreversibility analysis

    Krzysztof Banasiak;Michał Palacz;Armin Hafner;Zbigniew Buliński

  • Application range of the HEM approach for CO2 expansion inside two-phase ejectors for supermarket refrigeration systems

    Michal Palacz;Jacek Smolka;Adam Fic;Zbigniew Bulinski

  • Shape optimisation of a two-phase ejector for CO2 refrigeration systems

    Michal Palacz;Jacek Smolka;Andrzej J. Nowak;Krzysztof Banasiak

  • HEM and HRM accuracy comparison for the simulation of CO2 expansion in two-phase ejectors for supermarket refrigeration systems

    Michal Palacz;Michal Haida;Jacek Smolka;Andrzej J. Nowak

  • Modified homogeneous relaxation model for the r744 trans-critical flow in a two-phase ejector

    Michal Haida;Jacek Smolka;Armin Hafner;Michal Palacz

  • Heat transfer and pressure drop for in-tube evaporation of CO2

    Unknown

  • Crossing CO2 equator with the aid of multi-ejector concept: A comprehensive energy and environmental comparative study

    Paride Gullo;Konstantinos M. Tsamos;Armin Hafner;Krzysztof Banasiak

  • An experimental study of an ejector-boosted transcritical R744 refrigeration system including an exergy analysis

    Anas F.A. Elbarghthi;Armin Hafner;Krzysztof Banasiak;Vaclav Dvorak

  • Full-scale multi-ejector module for a carbon dioxide supermarket refrigeration system: Numerical study of performance evaluation

    Jakub Bodys;Michal Palacz;Michal Haida;Jacek Smolka

  • Performance comparison of fixed-and controllable-geometry ejectors in a CO2 refrigeration system.

    Jacek Smolka;Michal Palacz;Jakub Bodys;Krzysztof Banasiak

  • Multi-Ejector Concept: A Comprehensive Review on its Latest Technological Developments

    Paride Gullo;Armin Hafner;Krzysztof Banasiak;Silvia Minetto

  • State-of-the-art technologies for transcritical R744 refrigeration systems – a theoretical assessment of energy advantages for European food retail industry

    Paride Gullo;Konstantinos Tsamos;Armin Hafner;Yunting Ge

  • A detailed review on CO2 two-phase ejector flow modeling

    Knut Emil Ringstad;Yosr Allouche;Paride Gullo;Åsmund Ervik

Frequent Co-Authors

Jacek Smolka
Jacek Smolka Silesian University of Technology
Savvas A. Tassou
Savvas A. Tassou Brunel University London
M.P. Maiya
M.P. Maiya Indian Institute of Technology Madras
Jakob Stoustrup
Jakob Stoustrup Aalborg University
Ruzhu Wang
Ruzhu Wang Shanghai Jiao Tong University
Claudio Zilio
Claudio Zilio University of Padua
Guoliang Ding
Guoliang Ding Shanghai Jiao Tong University

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