A5008048892- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Combustion and flame dynamics
- Turbomachinery Performance and Optimization
- Advanced Thermodynamic Systems and Engines
- Advanced Power Generation Technologies
- Advanced Aircraft Design and Technologies
- Rocket and propulsion systems research
- Renewable energy and sustainable power systems
- Refrigeration and Air Conditioning Technologies
- Advanced Combustion Engine Technologies
- Advanced Thermodynamics and Statistical Mechanics
- Cavitation Phenomena in Pumps
- Heat Transfer and Optimization
- Coal Combustion and Slurry Processing
- Tribology and Lubrication Engineering
- Cyclone Separators and Fluid Dynamics
- Advanced Control Systems Optimization
- Radiative Heat Transfer Studies
- Spacecraft and Cryogenic Technologies
- Building energy efficiency and sustainability
- nanoparticles nucleation surface interactions
- Engine and Fuel Emissions
- Integrated Energy Systems Optimization
- Superconductivity in MgB2 and Alloys
- Advanced DC-DC Converters
Institute of Fluid Flow-Machinery
2015-2024
Polish Academy of Sciences
2014-2024
Institute of Power Engineering
2023
Anatolii Pidhornyi Institute of Power Machines and Systems
2015
University of Bayreuth
2013-2014
Lodz University of Technology
2013
Turbine stages can be divided into two types: impulse and reaction stages.The advantages of one type over the second are generally known based on basic physics turbine stage.In this paper these differences between mentioned types turbines were indicated example single stage dedicated to work in organic Rankine cycle (ORC) power systems.The for ORC cases analysed: plant generating up 30 kW 300 net electric power, respectively.Mentioned systems operate with different working fluids: DMC...
The paper illustrates a case study of fluid selection for an internal combustion engine heat recovery organic Rankine cycle (ORC) system having the net power about 30 kW.Various criteria are discussed.Particular attention is paid to thermodynamic performance and human safety.The working ORC has large impact on next steps design process, i.e., substance affects turbine size type exchangers.The final choice usually compromise between performance, safety natural environment.The most important...
Selecting the appropriate bearing system for rotor requires a good knowledge of available solutions and operating conditions machine. For newly designed machinery in adverse conditions, selecting bearings that ensure correct long-lasting operation can be extremely challenging. Difficulties increase when machine's parameters are beyond technical capabilities solutions. This article presents course design process results numerical experimental research prototype microturbine uses an innovative...
The paper presents an analysis of a turbine based micro ORC system for domestic biomass boiler. assumed nominal boiler capacity is in the range between 15 kW and 20 kW. Such small thermal output particularly difficult from point view power generation. One major issues economic aspect system. In general, systems are relatively more expensive. Another problem poor electrical efficiency which results efficiencies individual components such as expansion unit feed pump. Various working fluids...
The article describes an interpolation-analytical method of reconstruction the IAPWS-95 equations state and modified Benedict-Webb-Rubin with 32 terms (mBWR32). enables us to provide thermodynamic closure in 3D computational fluid dynamics (CFD) calculations turbomachinery flows real working media, such as steam Organic Rankine Cycle (ORC) fluids. described approach allows for sufficient accuracy flow does not require a significant increase cost over perfect gas calculations. is validated...
This article focuses principally on the comparison baseline and optimized flow efficiency of final stage an axial turbine operating a gas–steam mixture by applying hybrid Nelder–Mead particle swarm optimization method. Optimization algorithms are combined with CFD calculations to determine flowpaths thermodynamic parameters. The working fluid in this study is steam gas produced wet combustion chamber, therefore new type currently undergoing theoretical research. purpose work redesign examine...
Abstract The paper presents three-dimensional numerical simulations of combustion in the GTM-140 miniature turbine engine. main aim work is to understand processes occurring chamber. coupling chemical kinetics, thermochemistry, transport mass, energy and momentum, fluid mechanics a challenge for engineers. knowledge these issues essential achieve high performance product. k- ϵ (RANS) Turbulence Model Non-Premixed was used. particles droplets were described by Discrete Phase Model.
Abstract Design processes and numerical simulations have been presented for a few cases of turbines designated to work in ORC systems. The chosen working fluid isMDM. considered design configurations include single stage centripetal reaction centrifugal impulse as well multistage axial turbines. power outputs vary from about 75 kW 1 MW. flow is supersonic requires special blades. internal efficiencies these exceed 80% which high type machines. efficiency 90%. Possible turbine optimization...
The purpose of this work is to design and determine the performance a prototype centrifugal pump impeller for an organic Rankine cycle (ORC) power plant maximum 100 kW.The especially designed on same shaft as corresponding ORC microturbine.The unit works R7100 (HFE7100) -a lowboiling fluid characterized by zero ozone depletion potential coefficient.The has following rated parameters: nominal flow rate working 4 kg/s, operating rotor speed 10 000 rpm.The means 0D meanline method subject...
Abstract This paper is devoted to direct constrained optimisation of blading systems large power and small turbines so as increase their internal efficiency. The carried out using hybrid stochastic-deterministic methods such a combination search method Hooke-Jeeves simulated annealing or bat algorithm simplex Nelder-Mead. Among free shape parameters are blade number stagger angle, stacking line section (profile) parameters. One practical example efficiency turbine modification low load...