THEMLab
Numerics Multiphase Flows Energy
Projects Publications Members Contact

George Kosmadakis

Mechanical Engineer, MSc, PhD

Reactor's Isobox, NSCR "Demokritos"

gkosmad@ipta.demokritos.gr

+30 210 6503700

Research Interests

  • Computational Fluid Dynamics (CFD) and numerical combustion models
  • Internal combustion engines
  • Hydrogen combustion and use
  • Numerical simulations of energy systems
  • Solar thermal energy
  • Desalination technologies, in particular reverse osmosis units and energy recovery
  • Organic Rankine cycle
  • Heat pumps and thermal engineering
  • Heat and mass transfer

Computer Skills

  • MS Office
  • Tecplot
  • Autocad
  • 3D Studio
  • Solidworks 2013
  • Compaq/Intel Visual Fortran
  • Grapher
  • Matlab
  • Trnsys
  • EES
  • Refprop

Languages

  • Greek
  • English
  • German


Education

Doctoral Dissertation in Mechanical Engineering
Mar 2005 – Jun 2011

Internal Combustion Engines Laboratory, School of Mechanical Engineering of NTUA

M.Sc. course “Energy production and management”
2003 - 2004

National Technical University of Athens, Greece.

Diploma in Mechanical Engineering
1998 - 2003

School of Mechanical Engineering, National Technical University of Athens, Greece

Employment

Senior Research Associate
Sep 2021 - Present

Research Associate at THEMLab, Institute of Nuclear & Radiology Sciences & Technology, Energy & Safety (INRASTES), National Center for Scientific Research “Demokritos”, Athens, Greece. (H2020 - RES4BUILD project).

Adjunct Researcher
Sep 2017 - Aug 2021

Adjunct Researcher at THEMLab, Institute of Nuclear & Radiology Sciences & Technology, Energy & Safety (INRASTES), National Center for Scientific Research “Demokritos”, Athens, Greece. (Industrial Research Fellowship Program funded by Stavros Niarchos Foundation).

Consultant
2017 - 2018

External consultant for EC research projects in “WIP – Wirtschaft und Infrastruktur GmbH & Co Planungs-KG”, Munich, Germany.

Research Associate
2006 - Present

Research Associate at the Department of Natural Resources & Agricultural Engineering, Laboratory of Agricultural Machinery Athens, Agricultural University of Athens, Greece.

Research Associate
2011 - Present

Research Associate at the Internal Combustion Engines Laboratory, School of Mechanical Engineering, National Technical University of Athens, Greece.

Research Associate
Jul 2016 - Dec 2016

Research Associate at Psyctotherm SA for the implementation of a H2020-SME-Phase 1 project (Acronym: IE-E).

Research Assistant
2005 - 2011

Research Assistant at the Internal Combustion Engines Laboratory, School of Mechanical Engineering, National Technical University of Athens, Greece.

Teaching Assistant
Mar 2005 - Oct 2011

Teaching assistant at the Internal Combustion Engines Laboratory, School of Mechanical Engineering, National Technical University of Athens, Greece: Internal Combustion Engines I (undergraduate), lectures, workshop, exams correction.

Trainee
Sep 2002 - Oct 2002

ABB SA (Greece), position: Trainee, Mechanical Engineer (operation, maintenance and service of turbo-chargers).

Scholarships/Awards

Award
2016

Best Paper Award in the category “Heat Exchangers 1” at HEFAT 2016 Int. Conference

Award
2014 - 2015

Renewable Energy Journal Reviewer Award.

Award
2014 - 2017

Outstanding Reviewer award of Journal of Energy Engineering.

Scholarship
2013 - 2015

Post-doc research scholarship in the field of internal combustion engines awarded by the Greek State Scholarships Foundation.

Award
2007 - 2012

“Thomaidio Award for the Advancement of Science and Arts”, for the publication of outstanding research papers in International Scientific Journals.

Scholarship
2005 - 2011

Ph.D. research scholarship awarded by the Greek State Scholarships Foundation in the field of “Emissions of Internal Combustion Engines”.

Research Projects

RES4BUILD
May 2019 - present

Renewables for clean energy buildings in a future power system (H2020-LC-SC3-RES-4-2018-814865)

Industrial Heat Pumps
Sep 2017 - Present

Integrated solutions for low-temperature waste heat recovery and exploitation in industrial processes. Project funded by the Stavros Niarchos Foundation.

RED-Heat-to-Power
Feb 2017 - Apr 2019

Conversion of Low Grade Heat to Power through closed loop Reverse Electro-Dialysis (Η2020 – LCE-01-2014-640667)

ΙΕ-Ε
Jul 2016 - Dec 2016

Innovative heat-to-power engine for very low temperature heat recovery applications (Η2020 - SME instrument phase 1-728284)

JatroMed
Jul 2013 - Jun 2017

Evaluation of the energy crop Jatropha curcas as a mean to promote renewable and sustainable energy for the Mediterranean region (EuropeAid/128320/C/ACT/Multi-2011/221-037)

SUPERCRITICAL-ORC
Apr 2013 - Oct 2015

Development of a small-scale low-temperature supercritical organic Rankine cycle with optimized scroll expander and evaporator (GSRT-11SYN7-278)

ORC
May 2015 - Oct 2015

Experimental investigation of organic Rankine cycle. In the framework of a mobility project, financed by KIC InnoEnergy SE.

ORC design
Jul 2015 - Sep 2015

Industrial design of an ORC engine. In the framework of the project “Innovation and Entrepreneurship - Exploitation of Research at the AUA”. Financed by NSRF 2007-2013.

RESTOR
Jan 2014 - May 2015

Renewable Energy Sources Transforming Our Regions - Hydro (IEE/11/957)

CPV/RANKINE
Jan 2013 - Dec 2014

Improving the performance of concentrating PV by exploiting the excess heat through a low temperature supercritical organic Rankine cycle (FP7-SME-2012-315049)

TWO-STAGE RO-RANKINE
Mar 2011 - Dec 2014

Development and experimental evaluation of an autonomous two-stage solar organic Rankine cycle for reverse osmosis desalination of seawater (GSRT-09SYN32-982)

ProDes
Oct 2008 - Sep 2010

Promotion of Renewable Energy for Water production through Desalination (IEE/07/781/SI2.499059)

Solar-ORC-RO
Oct 2008 - Sep 2010

Improvement of organic solar Rankine RO system performance by in depth investigation and assessment of physical and technical parameters strongly affect on. Scientific and Technological cooperation between Greece and US (GSRT-05NON-EU-219)

Scientific Associations

  • Technical Chamber of Greece
  • American Society of Mechanical Engineers (ASME)
  • European Desalination Society
  • Combustion Institute – Greek section

Reviewer/Editorial

Invited reviewer in International Journals and Conferences

Energy, Solar Energy, Applied Energy, Energy Conversion and Management, Energy Policy, Journal of Membrane Science, International Journal of Thermal Sciences, Desalination and Water Treatment, SAE International, ASME/Journal of Solar Energy Engineering, ASME/IMECE2011, Environmental Engineering and Management Journal, ECOS 2012-2013, Applied Thermal Engineering, Applied Mathematical Modelling, Journal of Combustion, Energies, International Journal of Hydrogen Energy, ASME/Turbo Expo 2013, Journal Environment Protection Engineering, Computational Thermal Sciences, Journal of Energy Engineering, Journal of Electrical and Electronics Engineering Research, International Journal of Sustainable Energy, Qatar Foundation, Energies, AIMS Energy, Energy Technology, International Journal of Green Energy, Journal of Power and Energy, Sustainable Energy Technologies and Assessments, Journal of Cleaner Production, Renewable Energy, The Scientific World Journal, Journal of the Energy Institute, Entropy, ASME-ORC2015, Ocean Engineering, Frontiers/Solar Energy, Sustainability, Flow Turbulence and Combustion, Journal of Process Mechanical Engineering, ECEEE-Industrial Efficiency 2016-17, Fuel, Applied Sciences.

Editorial Board Member
  • International Journal Frontiers in Energy Research – Solar Energy, since 2013
  • International Journal Frontiers in Mechanical Engineering – Engine and Automotive Engineering, since 2015
  • International Journal Energies, since 2015
  • International Journal J, since 2018
Proposal evaluator
  • EC ERANETMED-2 call, 2016
  • Eurostars, 2019-2020
  • H2020 Energy Calls, 2020-

Publications - Conference Announcements

Books/Book Chapters
  1. G. Kosmadakis, S. Karellas, E. Kakaras. "Renewable and Conventional Electricity Generation Systems: Technologies and Diversity of Energy Systems" in Renewable Energy Governance. Springer London, 2013
  2. G. Kosmadakis, F. Moreno, J. Arroyo, M. Muñoz, C.D. Rakopoulos. "Spark-ignition engine fueled with methane-hydrogen blends" in Energy, Transportation and Global Warming. Springer London, 2016
Peer Reviewed Scientific Journals
  1. M. Pilou, G. Kosmadakis, G. Meramveliotakis and A. Krikas, Towards a 100% renewable energy share for heating and cooling in office buildings with solar and geothermal energy, Solar Energy Advances 2022; 2: 100020.
  2. G. Kosmadakis and P. Neofytou, Reversible high-temperature heat pump/ORC for waste heat recovery in various ships: A techno-economic assessment, Energy 2022; 256.
  3. G. Meramveliotakis, G. Kosmadakis and S. Karellas, Methods based on a semi empirical model for simulating scroll compressors with HFC and HFO refrigerants, Open Research Europe 2022; 1(148).
  4. K.X. Soulis, D. Manolakos, E. Ntavou and G. Kosmadakis, A geospatial analysis approach for the operational assessment of solar ORC systems. Case study: Performance evaluation of a two-stage solar ORC engine in Greece, Renewable Energy 2022; 181: 116-128.
  5. C. Golonis, A. Skiadopoulos, D. Manolakos and G. Kosmadakis, Assessment of the performance of a low-temperature Organic Rankine Cycle engine coupled with a concentrating PV-Thermal system, Renewable Energy 2021; 179: 1085-1097.
  6. G. Kosmadakis, D.C. Rakopoulos and C.D. Rakopoulos, Assessing the cyclic-variability of spark-ignition engine running on methane-hydrogen blends with high hydrogen contents of up to 50%, International Journal of Hydrogen Energy 2021; 46(34): 17955-17968.
  7. D.C. Rakopoulos, C.D. Rakopoulos, E.G. Giakoumis and G. Kosmadakis, Numerical and Experimental Study by Quasi-Dimensional Modeling of Combustion and Emissions in Variable Compression Ratio High-Speed Spark-Ignition Engine, Journal of Energy Engineering 2021; 147(5).
  8. G. Kosmadakis, C. Arpagaus, P. Neofytou and S. Bertsch, Techno-economic analysis of high-temperature heat pumps with low-global warming potential refrigerants for upgrading waste heat up to 150 °C, Energy Conversion and Management 2020; 226.
  9. G. Kosmadakis and P. Neofytou, Investigating the performance and cost effects of nanorefrigerants in a low-temperature ORC unit for waste heat recovery, Energy 2020; 204.
  10. D.C. Rakopoulos, C.D. Rakopoulos, G. Kosmadakis and E.G. Giakoumis, Exergy assessment of combustion and EGR and load effects in DI diesel engine using comprehensive two-zone modeling, Energy 2020; 202.
  11. G. Kosmadakis and C.D. Rakopoulos, A fast CFD-based methodology for determining the cyclic variability and its effects on performance and emissions of spark-ignition engines, Energies 2019; 12(21).
  12. M. Micari, A. Cipollina, F. Giacalone, G. Kosmadakis, M. Papapetrou, G. Zaragoza, G. Micale and A. Tamburini, Towards the first proof of the concept of a Reverse ElectroDialysis - Membrane Distillation Heat Engine, Desalination 2019; 453: 77-88.
  13. F. Giacalone, M. Papapetrou, G. Kosmadakis, A. Tamburini, G. Micale and A. Cipollina, Application of reverse electrodialysis to site-specific types of saline solutions: A techno-economic assessment, Energy 2019; 181: 532-547.
  14. G. Kosmadakis, Estimating the potential of industrial (high-temperature) heat pumps for exploiting waste heat in EU industries, Applied Thermal Engineering 2019; 156: 287-298.
  15. G. Kosmadakis and P. Neofytou, Investigating the effect of nanorefrigerants on a heat pump performance and cost-effectiveness, Thermal Science and Engineering Progress 2019; 13.
  16. G.M. Kosmadakis, D.C. Rakopoulos and C.D. Rakopoulos, Performance and emissions of a methane-fueled spark-ignition engine under consideration of its cyclic variability by using a computational fluid dynamics code, Fuel 2019; 258.
  17. S. Lecompte, E. Ntavou, B. Tchanche, G. Kosmadakis, A. Pillai, D. Manolakos and M. de Paepe, Review of experimental research on supercritical and transcritical thermodynamic cycles designed for heat recovery application, Applied Sciences (Switzerland) 2019; 9(12).
  18. D. Manolakos, G. Kosmadakis, E. Ntavou and B. Tchanche, Test results for characterizing two in-series scroll expanders within a low-temperature ORC unit under partial heat load, Applied Thermal Engineering 2019; 163.
  19. B. Ortega-Delgado, F. Giacalone, A. Cipollina, M. Papapetrou, G. Kosmadakis, A. Tamburini and G. Micale, Boosting the performance of a Reverse Electrodialysis – Multi-Effect Distillation Heat Engine by novel solutions and operating conditions, Applied Energy 2019; 253.
  20. M. Papapetrou, G. Kosmadakis, F. Giacalone, B. Ortega-Delgado, A. Cipollina, A. Tamburini and G. Micale, Evaluation of the economic and environmental performance of low-temperature heat to power conversion using a reverse electrodialysis - Multi-effect distillation system, Energies 2019; 12(17).
  21. C.D. Rakopoulos, D.C. Rakopoulos, G.M. Kosmadakis and R.G. Papagiannakis, Experimental comparative assessment of butanol or ethanol diesel-fuel extenders impact on combustion features, cyclic irregularity, and regulated emissions balance in heavy-duty diesel engine, Energy 2019; 174: 1145-1157.
  22. A. Kaya, M. Lazova, G. Kosmadakis, S. Lecompte and M.D. Paepe, Evaluation of Existing Heat Transfer Correlations in Designing Helical Coil Evaporators for Low-Temperature Organic Rankine Cycles via Inverse Design Approach, Heat Transfer Engineering 2019; 40: 1-16.
  23. G. Kosmadakis, M. Papapetrou, B. Ortega-Delgado, A. Cipollina and D.C. Alarcón-Padilla, Correlations for estimating the specific capital cost of multi-effect distillation plants considering the main design trends and operating conditions, Desalination 2018; 447: 74-83.
  24. G.M. Kosmadakis, D.C. Rakopoulos, J. Arroyo, F. Moreno, M. Muñoz and C.D. Rakopoulos, CFD-based method with an improved ignition model for estimating cyclic variability in a spark-ignition engine fueled with methane, Energy Conversion and Management 2018; 174: 769-778.
  25. M. Papapetrou, G. Kosmadakis, A. Cipollina, U. La Commare and G. Micale, Industrial waste heat: Estimation of the technically available resource in the EU per industrial sector, temperature level and country, Applied Thermal Engineering 2018; 138: 207-216.
  26. D.C. Rakopoulos, C. Rakopoulos, G.C. Mavropoulos and G.M. Kosmadakis, Investigating the EGR rate and temperature impact on diesel engine combustion and emissions under various injection timings and loads by comprehensive two-zone modeling, Energy 2018; 157: 990-1014.
  27. G. Kosmadakis, G. Mousmoulis, D. Manolakos, I. Anagnostopoulos, G. Papadakis and D. Papantonis, Development of Open-Drive Scroll Expander for an Organic Rankine Cycle (ORC) Engine and First Test Results, Energy Procedia 2017; 129: 371-378.
  28. E. Ntavou, G. Kosmadakis, D. Manolakos, G. Papadakis and D. Papantonis, Experimental testing of a small-scale two stage Organic Rankine Cycle engine operating at low temperature, Energy 2017; 141: 869-879.
  29. M. Papapetrou, A. Cipollina, U. La Commare, G. Micale, G. Zaragoza and G. Kosmadakis, Assessment of methodologies and data used to calculate desalination costs, Desalination 2017; 419: 8-19.
  30. D.C. Rakopoulos, C.D. Rakopoulos, E.G. Giakoumis, N.P. Komninos, G.M. Kosmadakis and R.G. Papagiannakis, Comparative Evaluation of Ethanol, n -Butanol, and Diethyl Ether Effects as Biofuel Supplements on Combustion Characteristics, Cyclic Variations, and Emissions Balance in Light-Duty Diesel Engine, Journal of Energy Engineering 2017; 143(2).
  31. G. Kosmadakis, A. Landelle, M. Lazova, D. Manolakos, A. Kaya, H. Huisseune, C.S. Karavas, N. Tauveron, R. Revellin, P. Haberschill, M. De Paepe and G. Papadakis, Experimental testing of a low-temperature organic Rankine cycle (ORC) engine coupled with concentrating PV/thermal collectors: Laboratory and field tests, Energy 2016; 117: 222-236.
  32. G. Kosmadakis, D. Manolakos and G. Papadakis, Experimental investigation of a lowerature organic Rankine cycle (ORC) engine under variable heat input operating at both subcritical and supercritical conditions, Applied Thermal Engineering 2016; 92: 1-7.
  33. G.M. Kosmadakis, F. Moreno, J. Arroyo, M. Muñoz and C.D. Rakopoulos, Combustion analysis of a spark-ignition engine fueled on methane-hydrogen blend with variable equivalence ratio using a computational fluid dynamics code, Journal of Energy Engineering 2016; 142(2).
  34. G.M. Kosmadakis, D.C. Rakopoulos and C.D. Rakopoulos, Methane/hydrogen fueling a spark-ignition engine for studying NO, CO and HC emissions with a research CFD code, Fuel 2016; 185: 903-915.
  35. E. Ntavou, G. Kosmadakis, D. Manolakos, G. Papadakis and D. Papantonis, Experimental evaluation of a multi-skid reverse osmosis unit operating at fluctuating power input, Desalination 2016; 398: 77-86.
  36. D.C. Rakopoulos, C.D. Rakopoulos, R.G. Papagiannakis, E.G. Giakoumis, K. Sotirios and G.M. Kosmadakis, Combustion and emissions in an HSDI engine running on diesel or vegetable oil base fuel with n-butanol or diethyl ether as a fuel extender, Journal of Energy Engineering 2016; 142(2).
  37. G. Kosmadakis, D. Manolakos, E. Ntavou and G. Papadakis, Multiple Reverse Osmosis sub-units supplied by unsteady power sources for seawater desalination, Desalination and Water Treatment 2015; 55(11): 3111-3119.
  38. G. Kosmadakis, D. Manolakos and G. Papadakis, An investigation of design concepts and control strategies of a double-stage expansion solar organic Rankine cycle, International Journal of Sustainable Energy 2015; 34(7): 446-467.
  39. G.M. Kosmadakis and C.D. Rakopoulos, Computational fluid dynamics study of alternative nitric-oxide emission mechanisms in a spark-ignition engine fueled with hydrogen and operating in a wide range of exhaust gas recirculation rates for load control, Journal of Energy Engineering 2015; 141(2).
  40. G.M. Kosmadakis, D.C. Rakopoulos and C.D. Rakopoulos, Investigation of nitric oxide emission mechanisms in a SI engine fueled with methane/hydrogen blends using a research CFD code, International Journal of Hydrogen Energy 2015; 40(43): 15088-15104.
  41. G.M. Kosmadakis and C.D. Rakopoulos, Computational fluid dynamics investigation of alternative nitric oxide emission mechanisms in a hydrogen-fueled spark-ignition engine, International Journal of Hydrogen Energy 2014; 39(22): 11774-11791.
  42. G. Kosmadakis, S. Karellas and E. Kakaras, Renewable and conventional electricity generation systems: Technologies and diversity of energy systems, Lecture Notes in Energy 2013; 23: 9-30.
  43. G.M. Kosmadakis, E.G. Pariotis and C.D. Rakopoulos, Heat transfer and crevice flow in a hydrogen-fueled spark-ignition engine: Effect on the engine performance and NO exhaust emissions, International Journal of Hydrogen Energy 2013; 38(18): 7477-7489.
  44. C. Li, G. Kosmadakis, D. Manolakos, E. Stefanakos, G. Papadakis and D.Y. Goswami, Performance investigation of concentrating solar collectors coupled with a transcritical organic Rankine cycle for power and seawater desalination co-generation, Desalination 2013; 318: 107-117.
  45. G.M. Kosmadakis, C.D. Rakopoulos, J. Demuynck, M. De Paepe and S. Verhelst, CFD modeling and experimental study of combustion and nitric oxide emissions in hydrogen-fueled spark-ignition engine operating in a very wide range of EGR rates, International Journal of Hydrogen Energy 2012; 37(14): 10917-10934.
  46. E.G. Pariotis, G.M. Kosmadakis and C.D. Rakopoulos, Comparative analysis of three simulation models applied on a motored internal combustion engine, Energy Conversion and Management 2012; 60: 45-55.
  47. N.P. Komninos and G.M. Kosmadakis, Heat transfer in HCCI multi-zone modeling: Validation of a new wall heat flux correlation under motoring conditions, Applied Energy 2011; 88(5): 1635-1648.
  48. G. Kosmadakis, D. Manolakos and G. Papadakis, Simulation and economic analysis of a CPV/thermal system coupled with an organic Rankine cycle for increased power generation, Solar Energy 2011; 85(2): 308-324.
  49. E. Pariotis, G. Kosmadakis and C. Rakopoulos, Comparative analysis of three simulation models applied on a motored internal combustion engine, 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Novi Sad, Serbia, 2011. no.106093
  50. C.D. Rakopoulos, G.M. Kosmadakis, J. Demuynck, M. De Paepe and S. Verhelst, A combined experimental and numerical study of thermal processes, performance and nitric oxide emissions in a hydrogen-fueled spark-ignition engine, International Journal of Hydrogen Energy 2011; 36(8): 5163-5180.
  51. C.D. Rakopoulos, G.M. Kosmadakis, A.M. Dimaratos and E.G. Pariotis, Investigating the effect of crevice flow on internal combustion engines using a new simple crevice model implemented in a CFD code, Applied Energy 2011; 88(1): 111-126.
  52. G. Kosmadakis, D. Manolakos, S. Kyritsis and G. Papadakis, Design of a two stage Organic Rankine Cycle system for reverse osmosis desalination supplied from a steady thermal source, Desalination 2010; 250(1): 323-328.
  53. G. Kosmadakis, D. Manolakos and G. Papadakis, Parametric theoretical study of a two-stage solar organic Rankine cycle for RO desalination, Renewable Energy 2010; 35(5): 989-996.
  54. C.D. Rakopoulos, G.M. Kosmadakis and E.G. Pariotis, Critical evaluation of current heat transfer models used in CFD in-cylinder engine simulations and establishment of a comprehensive wall-function formulation, Applied Energy 2010; 87(5): 1612-1630.
  55. C.D. Rakopoulos, G.M. Kosmadakis and E.G. Pariotis, Evaluation of a combustion model for the simulation of hydrogen spark-ignition engines using a CFD code, International Journal of Hydrogen Energy 2010; 35(22): 12545-12560.
  56. C.D. Rakopoulos, G.M. Kosmadakis and E.G. Pariotis, Investigation of piston bowl geometry and speed effects in a motored HSDI diesel engine using a CFD against a quasi-dimensional model, Energy Conversion and Management 2010; 51(3): 470-484.
  57. C.D. Rakopoulos, G.M. Kosmadakis and E.G. Pariotis, Simulation of a motored internal combustion engine using an improved CFD model, 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, Lausanne, Switzerland, 2010. no.103293
  58. G. Kosmadakis, D. Manolakos, S. Kyritsis and G. Papadakis, Comparative thermodynamic study of refrigerants to select the best for use in the high-temperature stage of a two-stage organic Rankine cycle for RO desalination, Desalination 2009; 243(1-3): 74-94.
  59. G. Kosmadakis, D. Manolakos, S. Kyritsis and G. Papadakis, Economic assessment of a two-stage solar organic Rankine cycle for reverse osmosis desalination, Renewable Energy 2009; 34(6): 1579-1586.
  60. G. Kosmadakis, D. Manolakos, S. Kyritsis and G. Papadakis, Simulation of an autonomous, two-stage solar organic Rankine cycle system for reverse osmosis desalination, Desalination and Water Treatment 2009; 1(1-3): 114-127.
  61. D. Manolakos, G. Kosmadakis, S. Kyritsis and G. Papadakis, Identification of behaviour and evaluation of performance of small scale, low-temperature Organic Rankine Cycle system coupled with a RO desalination unit, Energy 2009; 34(6): 767-774.
  62. D. Manolakos, G. Kosmadakis, S. Kyritsis and G. Papadakis, On site experimental evaluation of a low-temperature solar organic Rankine cycle system for RO desalination, Solar Energy 2009; 83(5): 646-656.
  63. C.D. Rakopoulos, G.M. Kosmadakis and E.G. Pariotis, Evaluation of a new computational fluid dynamics model for internal combustion engines using hydrogen under motoring conditions, Energy 2009; 34(12): 2158-2166.
  64. E.G. Pariotis, G.M. Kosmadakis, D.T. Hountalas and C.D. Rakopoulos, Comparing the results obtained from a CFD and a Quasi-dimensional model used to investigate the effect of various piston bowl geometries of a HSDI Diesel engine under motoring conditions, 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Cracow-Gliwice; Poland, 2008. no.110672
  65. C.D. Rakopoulos, G.M. Kosmadakis and E.G. Pariotis, Evaluation of a new CFD model for internal combustion engines using hydrogen under motoring conditions, 20th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Padova, Italy, 2007. no.109893
Peer Reviewed International and European Conferences
  1. Pilou M, Kosmadakis G, Meramveliotakis G, Krikas A. Towards a 100% renewable energy share for heating and cooling in office buildings with solar and geothermal energy. In: Proceedings of Solar World Congress 2021 (SWC2021), 25-29 October 2021 (virtual event).
  2. Hosouli S, Cabral D, Gomes J, Kosmadakis G, Mathioulakis E, Mohammadi H, Loris A, Naidoo A. Performance assessment of concentrated photovoltaic thermal (CPVT) solar collector at different locations. In: Proceedings of Solar World Congress 2021 (SWC2021), 25-29 October 2021 (virtual event).
  3. Kosmadakis G, Neofytou P. Performance and economic evaluation of a reversible high-temperature heat pump/orc for waste heat recovery in the marine sector. In: The Proceedings of the 6th International Seminar on ORC Power Systems (ORC2021), Munich, Germany, 11-13 October 2021.
  4. Pilou M, Kosmadakis G, Meramveliotakis G, Krikas A. Renewable Energy Based Systems with Heat Pumps for Supplying Heating and Cooling in Residential Buildings. In: The 34th International Conference On Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS2021), June 27-July 2, 2021, Taormina, Italy.
  5. Kosmadakis G, Neofytou P. Waste heat recovery with high-temperature heat pumps for steam generation: performance and cost effects. In: The 34th International Conference On Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS2021), June 27-July 2, 2021, Taormina, Italy.
  6. Meramveliotakis G, Kosmadakis GM, Krikas A, Gomes J, Pilou M. Innovative Coupling of PVT Collectors with Electric-Driven Heat Pumps for Sustainable Buildings, In: 13th International Conference on Solar Energy for Buildings and Industry (Eurosun 2020), September 1-3 2020, Athens, Greece.
  7. Rakopoulos CD, Kosmadakis GM, Pariotis EG. Evaluation of a new CFD Model for Internal Combustion Engines using Hydrogen under Motoring Conditions, In: Proceedings of the 20th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2007), June 25–28 2007, Padova, Italy, Vol. I, pp. 113–22.
  8. Kosmadakis G, Manolakos D, Kyritsis S, Papadakis G, Bouzianas K. Design of an autonomous, two stages solar organic Rankine cycle system for reverse osmosis desalination. In: Proceedings of the 1st conference on environmental management, engineering, planning and economics (CEMEPE 2007), Skiathos island, Greece, 24–28 June 2007, pp. 1267–72.
  9. Pariotis EG, Kosmadakis GM, Hountalas DT, Rakopoulos CD. Comparing the results obtained from a CFD and a Quasi-dimensional model used to investigate the effect of various piston bowl geometries of a HSDI Diesel engine under motoring conditions. In: Proceedings of the 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2008), June 24–27 2008, Kraków, Poland, Vol. I, pp. 309–20.
  10. Rakopoulos CD, Kosmadakis GM, Pariotis EG. Simulation of a motored internal combustion engine using an improved CFD code. In: Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2010), June 14–17 2010, Lausanne, Switzerland, Paper No. 295.
  11. Pariotis EG, Kosmadakis GM, Rakopoulos CD. Comparative analysis of three simulation models applied on a motored internal combustion engine. In: Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2011), July 4–7 2011, Novi Sad, Serbia.
  12. Kosmadakis G, Manolakos D, Papadakis G. Investigating the double-stage expansion in a solar ORC. Presented in the 1st International Seminar on ORC Power Systems (ORC2011), Delft, The Netherlands, 22-23 September 2011.
  13. Pariotis EG, Kosmadakis GM, Rakopoulos CD. Effect of heat transfer and crevice flow on the engine performance and NO emissions in a hydrogen-fueled spark-ignition engine. In: Proceedings of the 1st International Conference of Powertrain Modelling and Control (PMC 2012), September 4–6 2012, Bradford, UK, Paper No. 324.
  14. Kosmadakis G, Manolakos D, Papadakis G. Investigation of Multiple Reverse Osmosis Sub-Units Coupled to a Small-Scale Solar Subcritical Organic Rankine Cycle Engine. Presented in the WIN4Life Int. Conference, Tinos island, Greece, 19-21 September 2013 (http://www.uest.gr/win4life/images/win4life_conference_programme.pdf).
  15. Kosmadakis G, Manolakos D, Papadakis G. LOW-concentration PV/t combined with a low temperature supercritical organic Rankine engine for increased power production by exploiting PV waste heat. Presented in the 28th European PV Solar Energy Conference and Exhibition (28th EU PVSEC), Paris, France, 30 September-4 October 2013.
  16. Kosmadakis G, Manolakos D, Ntavou E, Papadakis G. Implementation of a two-stage organic Rankine cycle using scroll expanders operating under variable heat input. Poster presentation in the 2nd Int. Seminar on ORC Power Systems (ORC2013), Rotterdam, The Netherlands, 7-8 October 2013 (http://www.asme-orc2013.nl/program/show_slot/14).
  17. Kosmadakis G, Manolakos D, Bouzianas K, Papadakis G. Heat recovery in low-concentration PV/thermal units using a low-temperature supercritical organic Rankine cycle for improved system performance. Oral presentation in the 2nd Int. Seminar on ORC Power Systems (ORC2013), Rotterdam, The Netherlands, 7-8 October 2013 (http://www.asme-orc2013.nl/program/day/1).
  18. Ntavou E, Kosmadakis G, Manolakos D, Papadakis G. Design and implementation of a two-stage organic Rankine cycle, operating under variable heat input. Poster presentation at the Industrial Technologies 2014 Int. Conference (IndTech2014), Athens, Greece, 9-11 April 2014.
  19. Kosmadakis G, Manolakos D, Ntavou E, Papadakis G. Integrated system based on CPV/T collectors and a low temperature supercritical ORC engine. Poster presentation at the Industrial Technologies 2014 Int. Conference (IndTech2014), Athens, Greece, 9-11 April 2014.
  20. Kosmadakis G, Manolakos D, Ntavou E, Papadakis G. Multiple Reverse Osmosis sub-units supplied by unsteady power sources for seawater desalination. Proceedings of EDS2014 Int. Conference and Exhibition on Desalination for the Environment: Clean Water and Energy, Limassol, Cyprus, 11–15 May 2014.
  21. Ntavou E, Kosmadakis G, Manolakos D, Papadakis G. Experimental investigation of a multi-skid Reverse Osmosis (RO) unit, operating at a wide load range, powered by a small-scale Organic Rankine Cycle (ORC) engine. Proceedings of EDS2014 Int. Conference and Exhibition on Desalination for the Environment: Clean Water and Energy, Limassol, Cyprus, 11–15 May 2014.
  22. Papazoglou EG, Kosmadakis G, Serelis KG, Ait Babahmad R, Ouhammou A, Outzourhit A, Rashad M, Sadi A, Bouhdjar A, Suardi A, Pari L. Jatropha Curcas cultivation in north African countries: the case study of the Jatromed project. Proceedings of the 22nd European Biomass Conference and Exhibition 2014 (EU BC&E 2014), Hamburg, Germany, 23-26 June 2014.
  23. Kosmadakis G, Manolakos D, Olsson O, Ntavou E, Bystrom J, Papadakis G. Design and implementation of a hybrid low-concentration PV/thermal system, including a bottoming supercritical ORC engine. Accepted for presentation in the 29th European PV Solar Energy Conference and Exhibition (29th EU PVSEC), Amsterdam, The Netherlands, 22-26 September 2014.
  24. Kosmadakis G, Robolakis N, Papazoglou EG, Ouhammou A, Outzourhit A, Rashad M. Economic analysis for the estimation of oil-seed production cost of jatropha curcas in Egypt and Morocco. Presented at the 26th Annual Meeting of the Association for the Advancement of Industrial Crops (AAIC), Athens, Greece, 13-19 September 2014.
  25. Kosmadakis GM, Moreno F, Arroyo J, Muñoz M, Rakopoulos CD. CFD code validation and combustion analysis of a spark-ignition engine fueled with methane-hydrogen blends. In: Global Conference on Global Warming (GCGW-15), 24-27 May 2015, Athens, Greece.
  26. Ntavou E, Kosmadakis G, Manolakos D, Papadakis G, Papantonis D. Experimental investigation of a multi-skid RO unit, powered by a small-scale organic Rankine cycle engine. Presented at The International Desalination Association World Congress on Desalination and Water Reuse August 30-September 4 2015, San Diego, CA, USA.
  27. Kosmadakis G, Manolakos D, Papadakis G. Experimental testing of a small-scale supercritical ORC at low-temperature and variable conditions. Presented at the 3rd Int. Seminar on ORC Power Systems (ASME-ORC2015), Brussels, Belgium, 12-14 October 2015, Paper ID: 126.
  28. E Ntavou, G Kosmadakis, D Manolakos, G Papadakis. Experimental investigation of a small-scale two stage organic Rankine cycle engine operating at low temperature. Presented at the 3rd Int. Seminar on ORC Power Systems (ASME-ORC2015), Brussels, Belgium, 12-14 October 2015, Paper ID: 87.
  29. Lazova M, Daenens D, Kaya A, Huisseune H, Kosmadakis G, Manolakos D, De Paepe M. Design of a supercritical heat exchanger for an integrated CPV/T-Rankine cycle. Presented at the 3rd Int. Seminar on ORC Power Systems (ASME-ORC2015), Brussels, Belgium, 12-14 October 2015, Paper ID: 198.
  30. Kaya A, Lazova M, Kosmadakis G, De Paepe M. Evaluation of heat transfer correlations for helical coils based on measurements of a solar ORC operating at subcritical conditions. 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2016). 2016. p. 955–60.
  31. G Kosmadakis, G Mousmoulis, D Manolakos, I Anagnostopoulos, G Papadakis, D Papantonis. Development of Open-Drive Scroll Expander for an Organic Rankine Cycle (ORC) Engine and First Test Results. Presented at the 4th International Seminar on Organic Rankine Cycle Power Systems (ORC2017), Milan, Italy, 13-15 September 2017.
  32. G Kosmadakis, E. Koukouna, E. Sfyra Ragkousi, M.A. Stoupas, N. Robolakis, E.G. Papazoglou. Jatropha curcas production cost analysis and sustainability in Egypt. Presented at the 25th European Biomass Conference and Exhibition (EUBCE 2017), 12-15 June 2017, Stockholm, Sweden.
  33. G Kosmadakis, E. Koukouna, E.G. Papazoglou. Jatropha curcas energy analysis and balance in Egypt and Morocco. Presented at the 25th European Biomass Conference and Exhibition (EUBCE 2017), 12-15 June 2017, Stockholm, Sweden.
  34. M Papapetrou, G Kosmadakis, P Frías, T Gómez, L Simons. Evaluating the factors affecting the break-even cost of on-site PV generation at industrial units. Presented at European PV Solar Energy Conference and Exhibition 2017 (EU PVSEC), 25-29 September 2017, Amsterdam, The Netherlands (paper ID 7DV.1.21).
  35. M Papapetrou, G Kosmadakis. Reverse Electrodialysis Heat-Engine: Case studies of improving energy efficiency through recovery of low temperature excess heat. Industrial Efficiency 2018 Conference, 11-13 June 2018, Berlin, Germany.
  36. F Giacalone, G Kosmadakis, M Papapetrou, A Tamburini, A Cipollina, G Micale. Techno-economic evaluation of Reverse Electrodialysis process in different real environments. EDS 2018 Conference, Desalination for the Environment: Clean Water and Energy, 3-6 September 2018, Athens, Greece.
  37. EG Papazoglou, G Kosmadakis, R Ait Babahmad, A Outzourhit, A Ouhammou. Could Jatropha curcas L. be a profitable crop for cultivation in Morocco? 30th International Conference of the Association for the Advancement of Industrial Crops (AAIC2018), 23-26 September 2018, London, Ontario, Canada.
  38. F Giacalone, G Kosmadakis, M Papapetrou, A Tamburini, A Cipollina, G Micale. Potential of Reverse Electrodialysis in real environments. 13th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2018), 30 September - 4 October 2018, Palermo, Italy.
  39. D Manolakos, G Kosmadakis, B Tchanche, E Ntavou, G Papadakis. Experimental investigation and performance assessment of scroll expanders in series configuration of a small scale two-stage ORC unit. 5th International Seminar on ORC Power Systems (ORC2019), 9-11 September 2019, Athens, Greece.
  40. G Kosmadakis, P Neofytou. Potential and cost effectiveness of a reversible high-temperature heat pump/ORC unit for the exploitation of industrial waste heat. 5th International Seminar on ORC Power Systems (ORC2019), 9-11 September 2019, Athens, Greece.
  41. G Kosmadakis, P Neofytou. Performance and cost effects of nanorefrigerants within a low-temperature ORC for waste heat recovery. 5th International Seminar on ORC Power Systems (ORC2019), 9-11 September 2019, Athens, Greece.
  42. F Giacalone, A Tamburini, M Papapetrou, G Kosmadakis, A Cipollina, G Micale. Reverse ElectroDialysis-Multi Effect Distillation unit fed by Lithium Chloride solutions. 14th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2019), 1-6 October 2019, Dubrovnik, Croatia.