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Conferences

  1. Modeling of a large-scale, biomass fired combined heat and power plant coupled with an alumina/aluminium production process
    S. Hysenj, D. Grimekis, A. Doukelis, K. Panopoulos, S. Karellas
    31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018), June 17-21 2018, Guimarães, Portugal

  2. Life cycle assessment of a 1000 MW supercritical pulverized coal power plant under partial loads
    X. Han, N. Chen, S. Karellas, M. Liu, J. Liu, J. Yan, E. Kakaras
    31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018), June 17-21 2018, Guimarães, Portugal

  3. Integrated ORC-Adsorption cycle: A first and second law analysis of potential configurations
    T. C. Roumpedakis, T. Christou, K. Braimakis, E. Varvagiannis, S. Karellas
    31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018), June 17-21 2018, Guimarães, Portugal

  4. Selection and establishment of energy crops in abandoned and unused land for biomass production in cambrils
    D.-S. Kourkoumpas, C.E. Papadelis, P. Grammelis, S. Karellas, E. Kakaras
    26th European Biomass Conference and Exhibition, Copenhagen, Denmark, 14-18 May 2018

  5. Modelling of a 3MWth gasifier in aspenpusTM
    D. Grimekis, M.A. Delgado Calvo, K. Panopoulos, S. Karellas
    26th European Biomass Conference and Exhibition, Copenhagen, Denmark, 14-18 May 2018

  6. Molten silicon storage of concentrated solar power with integrated thermovoltaic energy conversion
    A. Datas, M. Zeneli, C. Del Cañizo, I. Malgarinos, A. Nikolopoulos, N. Nikolopoulos, S. Karellas, A. Martí
    Volume 2033, 8 November 2018, Article number 09000523rd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2017; Santiago; Chile; 26 September 2017 through 29 September 2017; Code 141990
    https://doi.org/10.1063/1.5067099

  7. Modelling, design and thermo-economic evaluation of an ORC-ejector trigeneration
    system for waste heat recovery
    K. Braimakis, A. Zitouni-Petrogianni, S. Karellas, S. Kalogirou
    30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), July 2-6 2017, San Diego, California, USA

  8. Energy and exergy analysis of advanced adiabatic compressed air
    energy storage system,Ł. Szabłowski, P. Krawczyk, K. Badyda, S. Karellas, E. Kakaras, W. Bujalski, Contemporary Problems in Thermal Engineering (CPOTE2016), 15-16 September 2016, Gliwice, Poland

  9. Energy analysis of Adiabatic Liquid Air Energy Storage System
    P. Krawczyk, Ł. Szabłowski, K. Badyda, S. Karellas, E. Kakaras
    Contemporary Problems in Thermal Engineering (CPOTE2016), 15-16 September 2016, Gliwice, Poland

  10. Semi-empirical model of a multi-diaphragm pump in an Organic Rankine Cycle experimental unit, F. D’Amico, P. Pallis, A.D. Leontaritis, S. Karellas, N.M. Kakalis, S. Rech, A. Lazzaretto, Contemporary Problems in Thermal Engineering (CPOTE2016), 15-16 September 2016, Gliwice, Poland

  11. Energy saving incentives for the European glass industry in the frame of the EU Emissions Trading Scheme, C-S. Hatzilau, S. Karellas, I. Dolianitis, D. Giannakopoulos, G. Skarpetis, T. Zitounis, Industrial Efficiency 2016 Berlin, 12-14 September 2016, Die Kalkscheune, Berlin, Germany

  12. Exergy analysis of a Naturally Ventilated Building Integrated Photovoltaic (BIPV) System, R. A. Agathokleous, S. A. Kalogirou, S. Karellas, ECOS 2016 - the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems June 19-23, 2016, PORTOROŽ, SLOVENIA

  13. Flexible two-stage turbine bleeding Organic Rankine Cycles (ORCs) for combined heat and power applications, D. Meinel, K. Braimakis, C. Wieland, S. Karellas, H. Spliethoff, ECOS 2016 - the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems June 19-23, 2016, PORTOROŽ, SLOVENIA

  14. Simulation Research on the Optimal Operation of Flue Gas Pre-Dried Lignite-Fired Power Plant Firing High Moisture Lignite, X. Han, S. Karellas, M. Liu, J. Liu, J. Yan, D. Rakopoulos, E. Kakaras
    ECOS 2016 - the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems June 19-23, 2016, PORTOROŽ, SLOVENIA

  15. Comparative energy and exergy analysis of compressed air energy storage and liquid air energy storage systems
    P. Krawczyk, Ł. Szabłowski, S. Karellas, E. Kakaras, K. Badyda
    ECOS 2016 - the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems June 19-23, 2016, PORTOROŽ, SLOVENIA

  16. "Investigation and optimization of the operation and design of a small scale experimental trigenertation system powered by a supercritical ORC"
    T. Roumpedakis, K. Braimakis, S. Karellas
    ASME ORC 2015, 3rd International Seminar on ORC Power Systems, 12-14 October 2015,Brussels, Belgium

  17. "Experimental study on a low temperature ORC unit for onboard waste heat recovery
    from marine Diesel engines"
    A.-D. Leontaritis, P. Pallis, S. Karellas, A. Papastergiou, N. Antoniou, P. Vourliotis, N.-M. Kakalis,G. Dimopoulos ASME ORC 2015, 3rd International Seminar on ORC Power Systems, 12-14 October 2015,Brussels, Belgium

  18. "Waste heat recovery at the glass industry with the intervention of batch and cullet preheating", I. Dolianitis, D. Giannakopoulos, C-S Hatzilau, S.Karellas, E. Kakaras, E. Nikolova, G.Skarpetis, N.Christodoulou, N. Giannoulas and T.Zitounis, 10th Conference on Sustainable Development of Energy, Water and Environment Systems, September 27th – October 3rd 2015, Dubrovnik, Croatia.

  19. "Techno-economic analysis and comparison of an ORC-VCC biomass-solar trigeneration system and a photovoltaic driven heat pump"
    K. Braimakis, T. Roumpedakis, A.Thimo and S.Karellas
    ECOS 2015, 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 29th June – 3rd July 2015, Pau, France

  20. "Energetic and exergetic evaluation of the hybridization of Combined Cycle Power
    Plants"
    S. Karellas, S. Kalogirou, A. Lappas, A. Papadopoulos, E. Kakaras
    ECOS 2015 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 30th June – 3rd July 2015 Pau, France

  21. "Energy efficiency increase in a glass industry by means of waste heat recovery"
    I.Dolianitis, D.Giannakopoulos, C-S Hatzilau, S.Karellas, G.Skarpetis, N. Christodoulou, N.Giannoulas and T.Zitounis
    ECOS 2015, 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 29th June – 3rd July 2015 Pau, France

  22. "Power to Fuel concept: Process analysis and economic evaluation"
    D.S. Kourkoumpas, E. Papadimou, K. Atsonios, S. Karellas
    ECOS 2015, 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 29th June – 3rd July 2015 Pau, France

  23. "Piston expanders technology as a way to recover energy from the expansion of highly wet organic refrigerants"
    D. Giaschi, R. Secchi, G. Galoppi, D. Tempest, G. Ferrara, L. Ferrari, S. Karellas
    ASME 2015 and Energy Conversion Coference PowerEnergy2015, 28th June – 2nd July 2015 San
    Diego, California, USA

  24. "The driving factors of CO2 emissions from electricity generation: An Index
    Decomposition analysis for Greece and EU-28"
    D. Diakoulaki, C. Chatzifoti, D. Giannakopoulos, C. Karaboiki, S. Karellas
    Global Conference on Global Warming GCGW-15, 24-27 May 2015, Athens, Greece

  25. "Life Cycle Analysis and Life Cycle costing of Electricity generation based on lignite:Applied case study in Greece"
    D.-S. Kourkoumpas, G. Stamatiou, S. Karellas, P. Grammelis, A. Gypakis, E. Kakaras
    Global Conference on Global Warming GCGW-15, 24-27 May 2015, Athens, Greece

  26. "Energy saving potentials for industrial steam boilers – Findings from the Ecodesign process"
    A. Aydemir, K. Braimakis, S. Hirzel, S. Karellas, B. Ostrander, C. Rohde
    10th European Conference on Industrial Furnaces and Boilers (INFUB-10), Gaia (Porto) - Portugal, 7-10 April 2015

  27. "Biomass pyrolysis kinetics modelling"
    Ch. Tsekos, E.-I. Koytsoumpa, K.D. Panopoulos, S. Karellas, E. Kakaras, V. Asouti
    22nd European Biomass Conference and Exhibitions Setting the course for a biobased economy, CCH-Congress Center Hamburg, Germany, 23-26 June 2014

  28. "Energy-exergy analysis and economic investigation of a cogeneration and trigeneration ORC-VCC hybrid system utilizing biomass fuel and solar power"
    S. Karellas, K. Braimakis
    ECOS 2014 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, June 15-19 2014 Turku, Finland

  29. "Thermodynamic investigation of waste heat recovery with subcritical and supercritical low-temperature Organic Rankine Cycle based on natural refrigerants and their binary mixtures"
    K. Braimakis, A.D. Leontaritis M. Preissinger, S. Karellas, D. Brüggeman, K. D. Panopoulos
    ECOS 2014 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, June 15-19 2014 Turku, Finland

  30. "Energetic Investigation of Heat Pumps Efficiency Improvement with the
    Implementation of an Expansion Machine"
    S. Karellas, A.-D. Leontaritis, K. Braimakis
    ECOS 2014 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, June 15-19 2014 Turku, Finland

  31. "Assessment of different SNG production routes via the use of Greek low rank coal"
    E.I. Koytsoumpa, S. Karellas, E.Kakaras, Low Rank Coal, International Industry Symposium, 28 April-1 May 2014, Melbourne, Australia

  32. "EU Emissions Trading Scheme application in Bulgaria, Greece and Romania"
    C.-S. Hatzilau, D. Giannakopoulos, S. Karellas, E. Kakaras
    Istanbul Carbon Summit: Carbon Management, Technlogies & Trade, 3-5 April 2014, Istanbul, Turkey

  33. "Economic evaluation of decentralized pyrolysis for the production of bio-oil as an energy carrier for improved logistics towards a large centralized gasification plant"
    K. Braimakis, K. Atsonios, K. D. Panopoulos, D. Vamvuka, S. Karellas, E. Kakaras
    21st European Biomass Conference and Exhibitions Setting the course for a biobased economy, Bella Centre, Copenhagen, Denmark, 3-7 June 2013

  34. "Investigation of the production of Substitute Natural Gas in Greece from local biomass feedstock by means of the BioHPR"
    S. Karellas, S. Kapodistrias, K. Panopoulos, J. Karl
    20th European Biomass Conference and Exhibitions Setting the course for a biobased economy. Milano Convention Center, Milan Italy, 18-22 June 2012

  35. "Energetic and Exergetic analysis of waste heat recovery systems in the cement industry"
    S. Karellas, A.-D. Leontaritis, G. Panousis, E. Bellos, E. Kakaras
    ECOS 2012 25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 26-29 June 2012 Perugia, Italy

  36. "Economic investigation of a lignite to SNG process"
    S. Karellas, E. Kakaras
    LOW RANK COAL, International Industry Symposium, April 16-19 2012, Melbourne, Australia

  37. “Energetic and exergetic analysis of a tetrofitted CCS plant firing low quality lignite”. E. Kakaras, S. Karellas, A. Doukelis, A. Koumanakos, A. Manettas. The Clearwater Clean Coal Conference, 35th International Technical Conferecne on Clean Coal & Fuel Systems, 6-10 June 2010, Clearwater, Florida, USA.

  38. “Combination of oxygen enriched coal combustion with post combustion CO2 capture: A retrofitting option for CO2 capture from power plants”.
    I. Vorrias, A. Doukelis, P. Grammelis, E. Kakaras, M. Whitehouse, G. Riley. International Conference on “Efficient and Clean Coal Technologies”, 29-30 October 2009, Moscow, Russia.

  39. “CO2 capture and Storage in the Greek Electricity generation sector”. A. Doukelis, E. Kakaras, D. Giannakopoulos, N. Koukouzas. S4FE2009 - International Conference on “Sustainable Fossil Fuels for Future Energy”, 6-10 July 2009, Rome, Italy.

  40. “Technologies for Carbon Capture and Storage”. Kakaras E., Koukouzas N. Technical Chamber of Greece, pre-Conference " Optimised lignite exploitation in the electricity production sector", 11th May 2009, Kozani, Greece

  41. “Towards the Zero Emissions Power Plant in the Electricity Generation Sector”. E. Kakaras, A. Doukelis. DEMSEE 2008 International Conference on Deregulated Electricity Market Issues in South-Eastern Europe, 22-23 September 2008, Nicosia, Cyprus.

  42. “Partial O2-fired coal power plant with post-combustion CO2 capture: A retrofitting option for CO2 “capture ready” plants”. A. Doukelis, I. Vorrias, P. Grammelis, E. Kakaras, M. Whitehouse, G. Riley. 7th European Conference on Coal Research and its Applications, 3-5 September 2008, Cardiff, Wales.

  43. “The Zero Emission Power Plant concept”.E. Kakaras, A. Doukelis. 2nd South-East Europe Energy Dialogue International Conference, Institute of Energy for South-East Europe, 21-22 May 2008, Thessaloniki, Greece.

  44. “CO2 capture and storage in the electricity generation sector.” E. Kakaras, A. Doukelis, D. Giannakopoulos, Workshop on Energy and Environment, Energy Committee of the Academy of Athens, Greece, 4th April 2008

  45. “Towards the zero emissions power plant in the electricity generation sector”. E. Kakaras, P. Grammelis, A. Doukelis. 5th Mediterranean Combustion Symposium, September 9-13, 2007,Monastir, Tunisia.

  46. “Energy and exergy analysis of an IGCC with in-situ CO2 capture”. Klimantos P., Koukouzas N., Kakaras Em. ASME 2006

  47. “National activities related to CO2 emissions abatement in the Greek power generation sector”. Kakaras E., Koukouzas N., Ziogou F. and Chatzinikolaou P. CO2NET Annual Seminar, October 2006, Athens, Greece.

  48. “CO2 emissions from power plants and reduction measures” Kakaras E., Koukouzas N. and Klimantos P. Thessaloniki International Exhibition, September 2006.

  49. “Process simulation of an IGCC with CO2 capture using the carbonation-calcination cycle”.Klimantos, P., Koukouzas, N., Kakaras, Em. 6th European Conference on Coal Research and its Applications. September 2006, University of Kent, UK.

  50. “CO2 emissions from power plants and reduction measures” Kakaras E., Koukouzas, N., Rampidis I. Science & Technology week, General Secretariat for Research & Technology, 28th June 2006, Athens.

  51. “Novel CO2 emissions reduction technique for IGCC plants”. E. Kakaras, A. Koumanakos, A. Doukelis, D. Giannakopoulos, Ch. Hatzilau, T. Weimer. ASME paper 2005-GT-68977, 2005.

  52. “Carbon Dioxide sequestration in underground geological formations”. Koukouzas, N., Stogiannis, P., Klimantos, P., and Kakaras E. , Symposium “Lignite and Natural Gas in the Greek energy sector “. Technical Chamber of Greece, June 2005, Athens.

  53. Carbon dioxide sequestration options in the Greek fossil fuel power generation sector”. Koukouzas, N., Klimantos, P., Stogiannis, P., and Kakaras, E. International Symposium “Moving Towards Zero-Emission Plants”, 20-21 June 2005, Leptokarya, Greece.

  54. “Evaluation of CO2 mitigation retrofit options for low-quality coal fired power plants”. E. Kakaras, A. Doukelis, D. Giannakopoulos, A. Koumanakos, Ch. Hatzilau. ECOS 2005, 18th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems, June 20 - 22 2005, Trondheim, Norway.

  55. “Activities for the reduction of CO2 emissions”. E. Kakaras, N. Koukouzas, P. Grammelis. Symposium on “Bioenergy in Greece” Deutch-Griechische Industrie- und Handelskammer, Thessaloniki, 11-13 May 2005 (in Greek).