- Contribution to the better understanding of operation of the radial centrifugal turbines - Analytical solution of the energetic and exergetic efficiency of a gas-steam cogeneration process - The development of the methods for energy conversions with the highest possible efficiency in thermal power plants and in industrial processes with high intensity of energy flows - The numerical simulation of the influence of transient phenomena in cooling tower and condenser on the efficiency of the power plants - Development of cavitation monitoring method for hydraulic machines with emphasis on the prediction of erosion effects on vital parts of the flow channel - Development of an experimental method for detection of local thermodynamic properties inside colling towers using a robot unit - A simulation program to follow stationary and transient response of a turbocharged Diesel engine for different power consumers: moto yachts, trucks, electric generators - Description and analysis of the spacely unevenly distributed heat transfer in curved channels filled with lubriction engine oil to optimize additional cooling of an IC engine cylinder liner - Noise control of vacuum cleaner suction units by using a resonator - Detection of cavitation phenomenon in cetrifugal pumps by using audible sound