World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
49
Citations
9112
World Ranking
4315
National Ranking
37

Sotirios Karellas 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 Sotirios Karellas 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: 203 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

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

Sotirios Karellas 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 Sotirios Karellas 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: 49 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

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

Overview

Sotirios Karellas is affiliated with the National Technical University of Athens in Greece. Their research primarily focuses on engineering, with a significant emphasis on mechanical engineering and renewable energy systems.

The main fields of study for Sotirios Karellas include:

  • Engineering

Within this domain, their subfields of study are:

  • Mechanical Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Building and Construction
  • Energy Engineering and Power Technology

Their research covers various topics, including:

  • Thermodynamic and Exergetic Analyses of Power and Cooling Systems
  • Refrigeration and Air Conditioning Technologies
  • Solar Thermal and Photovoltaic Systems
  • Advanced Thermodynamic Systems and Engines
  • Adsorption and Cooling Systems
  • Hybrid Renewable Energy Systems
  • Building Energy and Comfort Optimization

Recent publications by Sotirios Karellas include:

  • Comparative life cycle greenhouse gas emissions assessment of battery energy storage technologies for grid applications (2023), published in Journal of Cleaner Production
  • Organic flash cycles in Rankine-based Carnot batteries with large storage temperature spreads (2022), published in Energy Conversion and Management
  • Techno-economic assessment of a small-scale biomass ORC-CHP for district heating (2021), published in Energy Conversion and Management
  • Bioenergy with carbon capture and utilization: A review on the potential deployment towards a European circular bioeconomy (2021), published in Renewable and Sustainable Energy Reviews
  • Exergetic and economic analysis of a solar driven small scale ORC (2020), published in Renewable Energy

Frequent co-authors collaborating with Sotirios Karellas include:

  • Konstantinos Braimakis
  • Tryfon C. Roumpedakis
  • Antonios Charalampidis
  • George Meramveliotakis
  • George Kosmadakis

The researcher frequently publishes in these venues:

  • Renewable Energy
  • Energy
  • Energies
  • Applied Thermal Engineering
  • Open Research Europe

Best Publications

  • Energetic and economic investigation of Organic Rankine Cycle applications

    A. Schuster;S. Karellas;E. Kakaras;H. Spliethoff

  • Efficiency optimization potential in supercritical Organic Rankine Cycles

    A. Schuster;S. Karellas;R. Aumann

  • Development of an investment decision tool for biogas production from agricultural waste

    Sotirios Karellas;Ioannis Boukis;Georgios Kontopoulos

  • Energy–exergy analysis and economic investigation of a cogeneration and trigeneration ORC–VCC hybrid system utilizing biomass fuel and solar power

    Sotirios Karellas;Konstantinos Braimakis

  • Exergy analysis of solar thermal collectors and processes

    Soteris A. Kalogirou;Sotiriοs Karellas;Konstantinos Braimakis;Camelia Stanciu

  • Energetic and exergetic analysis of waste heat recovery systems in the cement industry

    S. Karellas;A.-D. Leontaritis;G. Panousis;E. Bellos

  • Exergy analysis on solar thermal systems: A better understanding of their sustainability

    Soteris A. Kalogirou;Sotirios Karellas;Viorel Badescu;Viorel Badescu;Konstantinos Braimakis

  • Supercritical Fluid Parameters in Organic Rankine Cycle Applications

    Sotirios Karellas;Andreas Schuster

  • Comparative techno-economic analysis of ORC and gasification for bioenergy applications

    A. Rentizelas;S. Karellas;E. Kakaras;I. Tatsiopoulos

  • Influence of supercritical ORC parameters on plate heat exchanger design

    Sotirios Karellas;Andreas Schuster;Aris-Dimitrios Leontaritis

  • Compressor intake-air cooling in gas turbine plants

    E. Kakaras;A. Doukelis;S. Karellas

  • Energetic optimization of regenerative Organic Rankine Cycle (ORC) configurations

    Konstantinos Braimakis;Sotirios Karellas

  • Comparative thermodynamic analysis of compressed air and liquid air energy storage systems

    Piotr Krawczyk;Łukasz Szabłowski;Sotirios Karellas;Emmanuel Kakaras

  • Hydrogen Production from Biomass Gasification

    Sotirios Karellas

  • Energy and exergy analysis of adiabatic compressed air energy storage system

    Lukasz Szablowski;Piotr Krawczyk;Krzysztof Badyda;Sotirios Karellas

  • Low grade waste heat recovery with subcritical and supercritical Organic Rankine Cycle based on natural refrigerants and their binary mixtures

    Konstantinos Braimakis;Markus Preißinger;Dieter Brüggemann;Sotirios Karellas

  • Thermodynamic analysis and life cycle assessment of supercritical pulverized coal-fired power plant integrated with No.0 feedwater pre-heater under partial loads

    Xiaoqu Han;Nana Chen;Junjie Yan;Jiping Liu

  • Comparison of the performance of compressed-air and hydrogen energy storage systems: Karpathos island case study

    S. Karellas;N. Tzouganatos

  • Comparative life cycle greenhouse gas emissions assessment of battery energy storage technologies for grid applications

    Unknown

  • An innovative biomass gasification process and its coupling with microturbine and fuel cell systems

    S. Karellas;J. Karl;E. Kakaras

  • Waste heat recovery from a landfill gas-fired power plant

    Daniela Gewald;Konstantinos Siokos;Sotirios Karellas;Hartmut Spliethoff

Frequent Co-Authors

Emmanuel Kakaras
Emmanuel Kakaras National Technical University of Athens
Panagiotis Grammelis
Panagiotis Grammelis Centre for Research and Technology Hellas
Nikos Nikolopoulos
Nikos Nikolopoulos Centre for Research and Technology Hellas
Luisa F. Cabeza
Luisa F. Cabeza University of Lleida
Andrea Frazzica
Andrea Frazzica Consiglio Nazionale delle Ricerche - CNR
Hartmut Spliethoff
Hartmut Spliethoff Technical University of Munich
Junjie Yan
Junjie Yan Xi'an Jiaotong University
Dieter Brüggemann
Dieter Brüggemann University of Bayreuth
Lorenzo Ferrari
Lorenzo Ferrari University of Pisa
Dimitrios C. Rakopoulos
Dimitrios C. Rakopoulos National Technical University of Athens

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