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Wyszukujesz frazę "Badyda, K." wg kryterium: Autor

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    Wyświetlanie 1-11 z 11
    Tytuł:
    Mathematical model for digital simulation of steam turbine set dynamics and on-line turbine load distribution
    Autorzy:
    Badyda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/175201.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mathematical modeling
    steam turbine
    online optimization
    Opis:
    The general structure and purposes of the distributed control systems (DCS) are reminded in connection with the capability to use them for on-line optimization of the load distribution in large, multiunit power stations. The basic assumptions, equations and structure of a model of backpressure extraction turbine are presented. The tasks, realized using this model in collaboration with the DCS’s measuring and archive systems, are defined. The principles of using and correcting the input data for the considered tasks are described. Model calculation results and recorded measuring data are compared. The input data quality and influence of the DCS record mode on the abilities to use the model appropriately are discussed.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2014, 126; 65-82
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A design procedure for “liquid to air” type atomisers based on air and water mixture outflow velocity
    Autorzy:
    Krawczyk, P.
    Badyda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/952674.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    liquid atomisation
    liquid to air atomisers
    design procedure
    atomizacja
    cieczy do rozpylaczy powietrza
    procedura projektowania
    Opis:
    The paper proposes a procedure which enables to determine selected geometric and operating parameters for twin-fluid liquid-to-air atomisers with internal mixing. The presented approach assumes that in order to ensure proper operation of an atomiser it is necessary to design its structure and flow parameters in such a way so that the flow inside the mixing chamber has a dispersive character. In order to calculate a required exhaust cross-section for the analysed atomiser, conditions within the exhaust plane: pressure, density and outflow velocity were estimated. In order to determine diameter and number of orifices supplying the liquid to the mixing chamber of the investigated atomiser type, a multi-parameter analysis based on numerical fluid mechanics was performed. The final part of the paper presents selected results obtained from experimental stand measurements made on an atomiser designed according to the presented procedure.
    Źródło:
    Chemical and Process Engineering; 2015, 36, 3; 355-363
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic analysis of compressed air energy storage working conditions
    Analiza termodynamiczna pracy układu CAES
    Autorzy:
    Badyda, K.
    Milewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/172932.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CAES
    elektrownia wiatrowa
    odnawialne źródła energii
    magazynowanie energii
    analiza termodynamiczna
    wind power plant
    renewable energy sources
    energy storage
    thermodynamic analysis
    Opis:
    The compressed air energy storage (CAES) technology and electricity generation by this system are described. General performances and possible system efficiency definitions of those kinds of systems are indicated. Hybrid systems which consist of CAES and other renewable technologies (RT), e.g., wind turbines, are presented. A possibility of CAES-RT location in Poland is indicated. Dynamic mathematical model of CAES is presented; using this model the results for compressing and expanding operating modes are obtained.
    Przedstawiono technologię CAES (ang. compressed air energy storage) oraz możliwości generowania energii elektrycznej z jej udziałem . Pokazano głównie parametry eksploatacyjne oraz możliwe tutaj do zastosowania definicje sprawności takich układów. Występują tutaj możliwości budowy układów hybrydowych CAES + technologie odnawialne, takie jak np. elektrownie wiatrowe. Zaproponowano potencjalne lokalizacje takich hybrydowych rozwiązań. Wyniki obliczeń oparto o model dynamiczny układu CAES - ładowanie i rozładowanie kawerny.
    Źródło:
    Archiwum Energetyki; 2012, 42, 1; 53-68
    0066-684X
    Pojawia się w:
    Archiwum Energetyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    SOFC-based micro-CHP system as an example of efficient power generation unit
    Autorzy:
    Kupecki, J.
    Badyda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240419.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    modelowanie
    system zasilania
    modeling
    power system
    SOFC
    Opis:
    Microscale combined heat and power (CHP) unit based on solid oxide fuel cells (SOFC) for distributed generation was analyzed. Operation principle is provided, and the technology development in recent years is brie.y discussed. System baseline for numerical analysis under steady-state operation is given. Grid-connected unit, fuelled by biogas corresponds to potential market demand in Europe, therefore has been selected for analysis. Fuel processing method for particular application is described. Results of modeling performed in ASPEN Plus engineering software with certain assumptions are presented and discussed. Due to high system electrical efficiency exceeding 40%, and overall efficiency over 80%, technology is an example of highly competitive and sustainable energy generation unit.
    Źródło:
    Archives of Thermodynamics; 2011, 32, 3; 33-43
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two-dimensional CFD modeling of the heat and mass transfer process during sewage sludge drying in a solar dryer
    Autorzy:
    Krawczyk, P.
    Badyda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240601.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    suszenie osadów ściekowych
    wymiana ciepła i masy
    CFD
    heat and mass transfer
    sewage sludge drying
    Opis:
    The paper presents key assumptions of the mathematical model which describes heat and mass transfer phenomena in a solar sewage drying process, as well as techniques used for solving this model with the Fluent computational fluid dynamics (CFD) software. Special attention was paid to implementation of boundary conditions on the sludge surface, which is a physical boundary between the gaseous phase - air, and solid phase - dried matter. Those conditions allow to model heat and mass transfer between the media during first and second drying stages. Selection of the computational geometry is also discussed - it is a fragment of the entire drying facility. Selected modelling results are presented in the final part of the paper.
    Źródło:
    Archives of Thermodynamics; 2011, 32, 4; 3-16
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical model of a plate fin heat exchanger operating under solid oxide fuel cell working conditions
    Autorzy:
    Kupecki, J.
    Badyda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240703.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    plate fin
    heat exchanger
    micro-CHP
    SOFC
    modeling
    płytka
    wymiennik ciepła
    mikro CHP
    modelowanie
    Opis:
    Heat exchangers of different types find application in power systems based on solid oxide fuel cells (SOFC). Compact plate fin heat exchangers are typically found to perfectly fit systems with power output under 5 kWel. Micro-combined heat and power (micro-CHP) units with solid oxide fuel cells can exhibit high electrical and overall efficiencies, exceeding 85%, respectively. These values can be achieved only when high thermal integration of a system is assured. Selection and sizing of heat exchangers play a crucial role and should be done with caution. Moreover, performance of heat exchangers under variable operating conditions can strongly influence efficiency of the complete system. For that reason, it becomes important to develop high fidelity mathematical models allowing evaluation of heat exchangers under modified operating conditions, in high temperature regimes. Prediction of pressure and temperatures drops at the exit of cold and hot sides are important for system-level studies. Paper presents dedicated mathematical model used for evaluation of a plate fin heat exchanger, operating as a part of micro-CHP unit with solid oxide fuel cells.
    Źródło:
    Archives of Thermodynamics; 2013, 34, 4; 3-21
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy analysis of underwater energy storage system based on compressed air
    Autorzy:
    Sałyga, S.
    Szabłowski, Ł
    Badyda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/175387.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    UWCAES
    CAES
    compressed air energy storage
    Opis:
    Due to the very intensive development of renewable energy sources, producing electricity in irregular and unpredictable way, storage plays an increasingly important role in the current energy system. Currently used systems for storing electricity on a large scale include only pumped storage and compressed air energy storage. The paper presents energy analysis of three underwater energy storage systems based on compressed air without recuperation, and with recuperation and adiabatic. Balance calculations for selected configuration of the system was performed. The efficiency of storage of electricity was calculated using four different definitions.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2016, 131; 151-160
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of parallel hot windbox repowering on 387 MW fossil fuel power plant
    Autorzy:
    Harutyunyan, A.
    Badyda, K.
    Wołowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/175190.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    combined cycle power plant
    fossil boiler
    hot windbox repowering
    CO2 emissions
    Opis:
    The paper presents the concept of repowering in existing power plant. Among technologies for existing steam power plants, the hot windbox repowering is the fastest way to respond to the energy demand, improve efficiency and reduce the pollutants emissions. Thermodynamic analysis of power plant model with fossil boiler before and after hot windbox repowering, has been investigated using commercial software. The purpose of this work is to understand and analyze the effect of hot windbox repowering on 387 MW fossil fuel power plant as well as the effect of additional heat exchangers, which have been installed parallel with regeneration system to use the heat of boiler exhaust gases. In this way, after repowering the summary power of power plant in base load is 615 MW, which has been reached adding gas turbine (176.9 MW). To analyze the model, calculations were performed in 3 stages: 1) calculation and comparison of the thermodynamic parameters as well as carbon dioxide emissions of power plant model before and after repowering, 2) analysis of the optimal value of feed water mass flow through heat exchangers installed after economizer, 3) calculation of thermodynamic parameters in values 100%, 90%, 80% and 75% of fossil boiler heat loads.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2016, 131; 79-95
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the air to water ratio on the performance of internal mixing two-fluid atomiser
    Autorzy:
    Krawczyk, P.
    Badyda, K.
    Młynarz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/185170.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    liquid atomisation
    internal mixing two-fluid atomisers
    mean diameter
    SNCR
    ciecz atomizacji
    Opis:
    One of the important parameters describing pneumatic liquid atomisation is the air to liquid mass ratio (ALR). Along with the atomiser design and properties of the liquid it has extremely important influence on parameters of atomised liquid such as: mean droplet diameter, jet range and angle. Knowledge about real characteristics of an atomiser in this respect is necessary to correctly choose its operating parameters in industrial applications. The paper presents results of experimental research of two-fluid atomisers with internal mixing built according to custom design. Investigated atomizers were designed for spraying a urea aqueous solution inside the power boiler combustion chamber. They are an important element of SNCR (selective non-catalytic reduction) installation which is used to reduce nitrogen oxides in a flue gas boiler. Obtained results were used by authors in further research, among others to determine the boundary conditions in the SNCR installation modeling. The research included determining mean droplet diameter as a function of ALR. It has been based on the immersion liquid method and on the use of specialised instrumentation for determining distribution of droplet diameters in a spray – Spraytec by Malvern. Results obtained with both methods were later compared. The measurements were performed at a laboratory stand located at the Institute of Heat Engineering, Warsaw University of Technology. The stand enables extensive investigation of the water atomisation process.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 4; 461-471
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected issues related to heat storage tank modelling and optimisation aimed at forecasting its operation
    Autorzy:
    Badyda, K.
    Niewiński, G.
    Bujalski, W.
    Warchoł, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/240413.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    akumulator ciepła
    modelowanie matematyczne
    optymalizacja
    zbiornik ciepła
    CHP
    heat accumulator
    heat storage tank
    mathematical modelling
    optimisation
    Opis:
    The paper presents results of research focused on modelling heat storage tank operation used for forecasting purposes. It presents selected issues related to mathematical modelling of heat storage tanks and related equipment and discusses solution process of the optimisation task. Presented detailed results were obtained during real-life industrial implementation of the optimisation process at the Siekierki combined heat and power (CHP) plant in Warsaw owned by Vattenfall Heat Poland S.A. (currently by Polish Oil & Gas Company - PGNiG SA) carried out by the Academic Research Centre of Power Industry and Environment Protection, Warsaw University of Technology in collaboration with Transition Technologies S.A. company.
    Źródło:
    Archives of Thermodynamics; 2011, 32, 3; 3-31
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of exhaust gas temperature distribution within a furnace of a stoker fired boiler as a function of its operating parameters
    Autorzy:
    Krawczyk, P.
    Badyda, K.
    Szczygieł, J.
    Młynarz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/240827.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    exhaust gas temperature measurement
    grate boiler
    aspirated thermocouple
    spaliny
    pomiar
    kocioł rusztowy
    Opis:
    Distribution of the exhaust gas temperature within the furnace of a grate boiler greatly depends on its operating parameters such as output. It has a considerably different character than temperature distributions in other types of boilers (with pulverised or fluidised bed), as it varies considerably across the chamber. Results presented in this paper have been obtained through research of a grate-fired hot water boiler with a nominal rating of some 30 MW. Measurements have been taken by introducing temperature sensors into prearranged openings placed in the boiler side walls. Investigation has been carried out for different output levels. Tests involved thermocouples in ceramic coating and aspirated thermocouples. The latter were used to eliminate influence of radiative heat transfer on measured results. Values obtained with both methods have been cross-checked.
    Źródło:
    Archives of Thermodynamics; 2015, 36, 3; 3-14
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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