Dmytro Konovalov
Om
Research fields are sustainablility energy, energy-efficient and energy-saving technology for marine and stationary energy.
- Power engineering
- Technical thermophysics
- Modelling and simulation of integrated cooling system
- Modeling of cogeneration and trigeneration systems for stationary and marine energy
- Industrial heat-and-power engineering
- Heat pumps
- The cooling system of the electric motors
- Refrigeration machines and plants
- Hydrogen technology
Forskning
My scientific work is focused on the following main areas:
1. Liquid Hydrogen: Eco-techno-economic analysis and optimization of liquid hydrogen value chains.
This research direction focuses on the development and optimization of liquid hydrogen value chains, addressing large-scale transportation, storage and production technologies. The work involves the design, synthesis, and simulation of hydrogen value chains, combined with eco-techno-economic analysis to assess feasibility, cost efficiency, and environmental impact. By applying optimization models, we can identify the most promising technologies for hydrogen commercialization and their integration into Norwegian, European, and global hydrogen markets, providing strategic insights for the future hydrogen-based energy transition.
Research projects:
- Liquid Hydrogen: Eco-techno-economic analysis and optimization of liquid hydrogen value chains (Research Council of Norway)
2. Development and improvement of low-temperature cooling systems of high-power electric motors.
This field of research focuses on the development and experimental validation of innovative cooling systems for high-power electric motors, particularly for automotive and marine electric propulsion applications. It was designed and tested three prototype electric motors (55 kW) with different cooling configurations, optimizing heat dissipation and thermal management to enhance motor efficiency and performance. Over a three-year experimental study, these advancements led to an increase in motor power from 55 kW to 98 kW and a significant improvement in the power-to-dimension ratio. My contributions include conceptual design, thermodynamic modelling, control system development, and experimental analysis, enabling compact and high-performance electric motors for sustainable transport solutions.
Research projects:
- Development of the cooling system for the electric motor (International research project)
3. Combined energy production in stationary and marine energy on the basis of high- and low-temperature cogeneration
This research field focuses on developing and optimizing advanced trigeneration and waste heat recovery systems for stationary and marine power plants to improve energy efficiency, reduce fuel consumption, and enhance environmental sustainability. I have worked on designing innovative multi-functional cogeneration and trigeneration technologies, integrating adsorption lithium-bromide chillers, absorption and ejector refrigeration cycles, and deep cooling techniques to optimize heat transformation and power generation. My contributions include thermodynamic analysis, numerical modelling, experimental validation, and software development for simulating integrated energy systems. These efforts have led to fuel consumption reductions, engine power improvements, and efficiency increases, with several novel solutions protected by patents of inventions. My work has also addressed energy supply challenges in high-speed, energy-intensive marine vessels, enhancing waste heat utilization for engine cooling, emissions reduction, and operational autonomy, thereby contributing to next-generation sustainable power solutions.
Research projects:
- Development of the concept of combined energy production in ship and stationary energy on the basis of intra-cycle low-temperature trigeneration (Project 0116U0086698, State research project)
- Scientific and technical bases of trigeneration polynar technologies on low-boiling working bodies for engines and power plants (Project 115U000300, state research project)
- Trigeneration technologies for marine and stationary power energy (Industry research project)
- The scientific and technical basis of energy supply of ships of the naval fleet and ships of the coast guard (Project 0121U112132, State research project)
4. Development of systems for contact cooling of cycle air of the power plants based on internal combustion engines and gas turbine engines.
This research focuses on developing energy-saving technologies for power plants through waste heat recovery and gas-dynamic effects, optimizing combined energy production systems to reduce fuel consumption and enhance efficiency. I have conducted theoretical, numerical, and experimental studies on waste heat transformation processes, particularly in gas turbines and internal combustion engines, developing mathematical models and thermodynamic analysis frameworks for phase transition dynamics. My work includes the design and experimental validation of aerothermopressor-based contact cooling systems, enabling highly efficient charge air cooling in marine and stationary applications, leading to fuel consumption reductions of 5–10 g/kWh and efficiency gains of 1-2%. These innovations have contributed to advanced energy recovery methodologies, integrating thermo-gas-dynamic compression and high-efficiency cooling cycles, with practical applications in industrial and transport energy systems.
Research projects:
- Development of thermopressor technologies for marine and stationary power plants (Industry research project)
- Development of energy-saving technologies on the basis of gas-dynamic effect (The President's Grant for young scientists GP/F32/152, state research project)
Publikasjoner
List of publications
Konovalov, D.; Tolstorebrov, I.; Iwamoto, Y.; Kobalava, H.; Lamb, J.J.; Eikevik, T.M. Optimizing Low-Temperature Three-Circuit Evaporative Cooling System for an Electric Motor by Using Refrigerants. Energies 2024, 17, doi:10.3390/en17163942.
Konovalov, D.; Kobalava, H.; Radchenko, M.; Løvås, T.; Pavlenko, A.; Radchenko, R.; Radchenko, A. Experimental study of dispersed flow in the thermopressor of the intercooling system for marine and stationary power plants compressors. Bulletin of the Polish Academy of Sciences Technical Sciences 2024, 72, e148439-e148439, doi:10.24425/bpasts.2023.148439.
Konovalov, D.; Radchenko, M.; Kobalava, H.; Radchenko, R.; Zubarev, A.; Tsaran, F.; Hrych, A.; Anastasenko, S. Research of hydrodynamic processes in the flow part of a low-flow thermopressor. Journal of Energy Systems 2024, 8, 89-100, doi:10.30521/jes.1283526.
Kobalava, H.; Konovalov, D.; Kalinichenko, I.; Pyrysunko, M. Study of Thermophysical Processes in the Thermopressor for Contact Cooling Systems. In Proceedings of the Advances in Design, Simulation and Manufacturing VII, Cham, 2024//, 2024; pp. 241-252.
Konovalov, D.; Kobalava, H.; Radchenko, M.; Karpoff, M.; Shapovalov, Y. Energy Efficiency of Combined Heating Systems Based on Heat Pumps for Private Residential Buildings Under the Climatic Conditions of Ukraine. In Proceedings of the Advanced Manufacturing Processes V, Cham, 2024; pp. 531-540.
Konovalov, D.; Tolstorebrov, I.; Kobalava, H.; Lamb, J.J.; Eikevik, T.M. Experimental Investigation of a Low-Temperature Three-Circuit Cooling System for an Electric Motor under Varying Loads. Energies 2023, 16, 8019. https://doi.org/10.3390/en16248019.
Konovalov, D.; Tolstorebrov, I.; Eikevik, T.M.; Kobalava, H.; Radchenko, M.; Hafner, A.; Radchenko, A. Recent Developments in Cooling Systems and Cooling Management for Electric Motors. Energies 2023, 16, 7006. https://doi.org/10.3390/en16197006.
Kobalava, H.; Konovalov, D.; Voinov, O.; Samokhvalov, V. Analyzing Thermophysical Phenomena in a Thermopressor for Air Intercooling Systems. In Proceedings of the Integrated Computer Technologies in Mechanical Engineering - 2023, Cham, 2024//, 2024; pp. 441-450.
Yu, Z.; Løvås, T.; Konovalov, D.; Trushliakov, E.; Radchenko, M.; Kobalava, H.; Radchenko, R.; Radchenko, A. Investigation of Thermopressor with Incomplete Evaporation for Gas Turbine Intercooling Systems. Energies 2023, 16, 20 https://doi.org/10.3390/en16010020
Konovalov, D.; Radchenko, M.; Kobalava, H.; Radchenko, A.; Radchenko, R.; Kornienko, V.; Maksymov, V. Research of characteristics of the flow part of an aerothermopressor for gas turbine intercooling air. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2022, 236, 634-646, doi:10.1177/09576509211057952.
Yang, Z.; Konovalov, D.; Radchenko, M.; Radchenko, R.; Kobalava, H.; Radchenko, A.; Kornienko, V. Analysis of Efficiency of Thermopressor Application for Internal Combustion Engine. Energies 2022, 15, doi:10.3390/en15062250.
Radchenko, M.; Radchenko, A.; Radchenko, R.; Kantor, S.; Konovalov, D.; Kornienko, V. Rational loads of turbine inlet air absorption-ejector cooling systems. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2022, 236, 450-462, doi:10.1177/09576509211045455.
Kornienko, V.; Radchenko, R.; Konovalov, D.; Gorbov, V.; Kalinichenko, I. Protection of Condensing Heat Exchange Surfaces of Boilers from Sulfuric Acid Corrosion. In Proceedings of the Lecture Notes in Mechanical Engineering, 2022; pp. 157-166.
Konovalov, D.; Kobalava, H.; Radchenko, M.; Gorbov, V.; Kalinichenko, I. Development of the Gas-Dynamic Cooling System for Gas Turbine Over-Expansion Circuit. In Proceedings of the Lecture Notes in Mechanical Engineering, 2022; pp. 249-258.
Konovalov, D.; Radchenko, M.; Kobalava, H.; Pyrysunko, M.; Andreev, A. Increasing Ecological and Energy Efficiency of Combustion Engines by Using a Thermopressor. In Proceedings of the Lecture Notes in Networks and Systems, 2022; pp. 474-483.
Kobalava, H.; Konovalov, D.; Radchenko, M.; Kantor, S.; Girzheva, O. Efficiency of Gas Turbine Cyclic Air Cooling by Thermopressor. In Proceedings of the Lecture Notes in Networks and Systems, 2022; pp. 532-540.
Kornienko, V.; Radchenko, R.; Radchenko, M.; Radchenko, A.; Pavlenko, A.; Konovalov, D. Cooling Cyclic Air of Marine Engine with Water-Fuel Emulsion Combustion by Exhaust Heat Recovery Chiller. Energies 2022, 15, doi:10.3390/en15010248.
Konovalov, D.; Radchenko, M.; Kobalava, H.; Radchenko, A.; Savenkov, O. Analysis of the Effectiveness of the Thermopressor for Charge Air Cooling of Marine Engines. In Proceedings of the Lecture Notes in Mechanical Engineering, 2022; pp. 582-591.
Konovalov, D.; Radchenko, R.; Kobalava, H.; Forduy, S.; Khaldobin, V. Development Of Software Complex Of Rational Design Of Cooling Systems On The Basis Of Thermopressor Technologies. Radioelectronic and Computer Systems 2021, 60-69, doi:10.32620/REKS.2021.1.05.
Konovalov, D.; Radchenko, R.; Forduy, S.; Tsaran, F.; Khaldobin, V.; Hrych, A. Simulation and software for research of ejector operation in variable modes. Radioelectronic and Computer Systems 2021, 37-47, doi:10.32620/reks.2021.3.04.
Konovalov, D.; Kobalava, H.; Radchenko, A.; Zielikov, O.; Khaldobin, V. Efficiency of Thermopressor Application in an Ejector Refrigeration Machine. In Proceedings of the Lecture Notes in Mechanical Engineering, 2021; pp. 329-338.
Radchenko, R.; Pyrysunko, M.; Kornienko, V.; Konovalov, D.; Girzheva, O. Enhancing Energy Efficiency of Ship Diesel Engine with Gas Ecological Recirculation. In Proceedings of the Lecture Notes in Mechanical Engineering, 2021; pp. 391-400.
Kornienko, V.; Radchenko, M.; Radchenko, R.; Konovalov, D.; Andreev, A.; Pyrysunko, M. IMPROVING THE EFFICIENCY OF HEAT RECOVERY CIRCUITS OF COGENERATION PLANTS WITH COMBUSTION OF WATER-FUEL EMULSIONS. Thermal Science 2021, 25, 791-800, doi:10.2298/TSCI200116154K.
Konovalov, D.; Kobalava, H.; Radchenko, M.; Sviridov, V.; Scurtu, I.C. Optimal Sizing of the Evaporation Chamber in the Low-Flow Aerothermopressor for a Combustion Engine. In Proceedings of the Lecture Notes in Mechanical Engineering, 2021; pp. 654-663.
Radchenko, A.; Andreev, A.; Konovalov, D.; Qiang, Z.; Zewei, L. Analysis of Ship Main Engine Intake Air Cooling by Ejector Turbocompressor Chillers on Equatorial Voyages. In Proceedings of the Lecture Notes in Networks and Systems, 2021; pp. 487-497.
Radchenko, M.; Portnoi, B.; Kantor, S.; Forduy, S.; Konovalov, D. Rational Thermal Loading the Engine Inlet Air Chilling Complex with Cooling Towers. In Proceedings of the Lecture Notes in Mechanical Engineering, 2021; pp. 724-733.
Kobalava, H.; Konovalov, D.; Radchenko, R.; Forduy, S.; Maksymov, V. Numerical Simulation of an Aerothermopressor with Incomplete Evaporation for Intercooling of the Gas Turbine Engine. In Proceedings of the Lecture Notes in Networks and Systems, 2021; pp. 519-530.
Konovalov, D.; Kobalava, H.; Radchenko, M.; Scurtu, I.C.; Radchenko, R. Determination of hydraulic resistance of the aerothermopressor for gas turbine cyclic air cooling. In Proceedings of the E3S Web of Conferences, 2020.
Kornienko, V.; Radchenko, R.; Konovalov, D.; Andreev, A.; Pyrysunko, M. Characteristics of the Rotary Cup Atomizer Used as Afterburning Installation in Exhaust Gas Boiler Flue. In Proceedings of the Lecture Notes in Mechanical Engineering, 2020; pp. 302-311.
Konovalov, D.; Kobalava, H.; Maksymov, V.; Radchenko, R.; Avdeev, M. Experimental Research of the Excessive Water Injection Effect on Resistances in the Flow Part of a Low-Flow Aerothermopressor. In Proceedings of the Lecture Notes in Mechanical Engineering, 2020; pp. 292-301.
Forduy, S.; Radchenko, A.; Kuczynski, W.; Zubarev, A.; Konovalov, D. Enhancing the gas engines fuel efficiency in integrated energy system by chilling cyclic air. In Proceedings of the Lecture Notes in Mechanical Engineering, 2020; pp. 500-509.
Konovalov, D.; Trushliakov, E.; Radchenko, M.; Kobalava, H.; Maksymov, V. Research of the aerothermopressor cooling system of charge air of a marine internal combustion engine under variable climatic conditions of operation. In Proceedings of the Lecture Notes in Mechanical Engineering, 2020; pp. 520-529.
Konovalov, D.; Kobalava, H. Efficiency analysis of gas turbine plant cycles with water injection by the aerothermopressor. In Lecture Notes in Mechanical Engineering; 2020; pp. 581-591
2024
-
Konovalov, Dmytro;
Tolstorebrov, Ignat;
Iwamoto, Yuhiro;
Kobalava, Halina;
Lamb, Jacob Joseph;
Eikevik, Trygve Magne.
(2024)
Optimizing Low-Temperature Three-Circuit Evaporative Cooling System for an Electric Motor by Using Refrigerants.
Energies
Academic article
-
Konovalov, Dmytro;
Kobalava, Halina;
Radchenko, Mykola;
Løvås, Terese;
Pavlenko, Anatoliy;
Radchenko, Roman.
(2024)
Experimental study of dispersed flow in the thermopressor of the intercooling system for marine and stationary power plants compressors.
Bulletin of the Polish Academy of Sciences Technical Sciences
Academic article
2023
-
Konovalov, Dmytro;
Tolstorebrov, Ignat;
Kobalava, Halina;
Lamb, Jacob Joseph;
Eikevik, Trygve Magne.
(2023)
Experimental Investigation of a Low-Temperature Three-Circuit Cooling System for an Electric Motor under Varying Loads.
Energies
Academic article
-
Konovalov, Dmytro;
Tolstorebrov, Ignat;
Eikevik, Trygve Magne;
Kobalava, Halina;
Radchenko, Mykola;
Hafner, Armin.
(2023)
Recent Developments in Cooling Systems and Cooling Management for Electric Motors.
Energies
Academic literature review
Tidsskriftspublikasjoner
-
Konovalov, Dmytro;
Tolstorebrov, Ignat;
Iwamoto, Yuhiro;
Kobalava, Halina;
Lamb, Jacob Joseph;
Eikevik, Trygve Magne.
(2024)
Optimizing Low-Temperature Three-Circuit Evaporative Cooling System for an Electric Motor by Using Refrigerants.
Energies
Academic article
-
Konovalov, Dmytro;
Kobalava, Halina;
Radchenko, Mykola;
Løvås, Terese;
Pavlenko, Anatoliy;
Radchenko, Roman.
(2024)
Experimental study of dispersed flow in the thermopressor of the intercooling system for marine and stationary power plants compressors.
Bulletin of the Polish Academy of Sciences Technical Sciences
Academic article
-
Konovalov, Dmytro;
Tolstorebrov, Ignat;
Kobalava, Halina;
Lamb, Jacob Joseph;
Eikevik, Trygve Magne.
(2023)
Experimental Investigation of a Low-Temperature Three-Circuit Cooling System for an Electric Motor under Varying Loads.
Energies
Academic article
-
Konovalov, Dmytro;
Tolstorebrov, Ignat;
Eikevik, Trygve Magne;
Kobalava, Halina;
Radchenko, Mykola;
Hafner, Armin.
(2023)
Recent Developments in Cooling Systems and Cooling Management for Electric Motors.
Energies
Academic literature review
Formidling
2024
-
Academic lectureKonovalov, Dmytro; Tolstorebrov, Ignat. (2024) Efficiency enhancement in electric motors: the development of a low-temperature three-circuit cooling system. Tohoku University The 11th Kyoto International Symposium for Environment and Energy (11th KIFEE) , Tendo, Yamagata, Japan 2024-03-03 - 2024-03-05
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LectureKonovalov, Dmytro. (2024) The hydrogen technology: modern trends, strategic insights, and the path to a sustainable future. Nagoya Institute of Technology The seminar at Nagoya Institute of Technology , Nagoya, Japan 2024-12-06 - 2024-12-12