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Wyszukujesz frazę "thermodynamic" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    A thermodynamic analysis of a gas-steam turbine incorporating a full model of a spray – ejector condense
    Autorzy:
    Ziółkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/175324.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    computational flow mechanics modelling
    two-phase ejector
    thermodynamic analysis
    numerical analysis
    Opis:
    The specific issues that occur in the mathematical modelling of a spray-ejector condenser have been presented. The results of a thermodynamic analysis of a steam-gas turbine cycle have been obtained by computational flow mechanics code. The main aim of the spray-ejector condenser is simultaneously condensing steam and compressing CO2 from the condensation pressure to about 100 kPa. Hence, the most important innovation of this steam-gas cycle emerges as the enhanced condensation, which is based on the nano-injection of cold water and a jet-powered compression of CO2 performed in the spray-ejector condenser.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2018, 139; 63-96
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increase of power and efficiency of the 900 MW supercritical power plant through incorporation of the ORC
    Autorzy:
    Ziółkowski, P.
    Mikielewicz, D.
    Mikielewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/239975.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    supercritical power plant
    ORC
    regeneration
    thermodynamic analysis
    numerical analysis
    CFM
    nadkrytyczny blok węglowy
    regenerowanie
    analiza termodynamiczna
    analiza numeryczna
    Opis:
    The objective of the paper is to analyse thermodynamical and operational parameters of the supercritical power plant with reference conditions as well as following the introduction of the hybrid system incorporating ORC. In ORC the upper heat source is a stream of hot water from the system of heat recovery having temperature of 90˚C, which is additionally aided by heat from the bleeds of the steam turbine. Thermodynamical analysis of the supercritical plant with and without incorporation of ORC was accomplished using computational flow mechanics numerical codes. Investigated were six working fluids such as propane, isobutane, pentane, ethanol, R236ea and R245fa. In the course of calculations determined were primarily the increase of the unit power and efficiency for the reference case and that with the ORC.
    Źródło:
    Archives of Thermodynamics; 2013, 34, 4; 51-71
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Clean gas technologies - towards zero-emission repowering of Pomerania
    Autorzy:
    Ziółkowski, P.
    Badur, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/175502.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    clean gas technologies
    clean coal technologies
    zero emission
    thermodynamic cycle
    steam-gas turbine
    oxy combustion
    carbon capture storage
    Opis:
    In the paper a brief review of processes for energy conversion developed recently within the framework of clean gas te chnologies is presented, in cluding projects for future repowering of Pomerania. The main aim of this work is to show the diferent thermodynamcs cycles which improve efficiency and/or decrease emissions such as: Cheng cycle, Szewalski cycle, LOTHECO cycle, hybrid pSOFC/GT cycle, inverse Brayton cycle, low-emission cycle and zero-emission cycle. For that purpose,cycles and results of analysis are frst studied and, secondly, new concept is presented. The role of coupled analysis 0D and 3D in cycle's devices is also discussed.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2012, 124; 51-80
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancement of the Brayton cycle efficiency by water or steam utilization
    Autorzy:
    Jesionek, K.
    Chrzczonowski, A.
    Ziółkowski, P.
    Badur, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/175275.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Brayton cycle
    regeneration
    Cheng cycle
    thermodynamic analysis
    gas steam turbine
    computational flow mechanics
    steam injection
    water injection
    interstage cooling
    Opis:
    In the paper, thermodynamic analysis of two modifications of the Brayton cycle into enhancement cycles with water or steam injection are discussed. The first one deals with a water injected gas turbine modified system with both interstage compressed air cooling and air heating (heat regeneration) before combustion chamber. The second one, mainly devoted to higher steam to air ratio, is connected with separate steam production in the heat recovery steam generator. Hence, steam utilization for the gas turbine propulsion in the Cheng cycle has been analysed. The analysis has been based on the computational flow mechanics (CFM) models of these advanced humidified systems, thanks to which, the influence of the main thermodynamic and design parameters have been examined.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2012, 124; 93-109
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic analysis of the double Brayton cycle with the use of oxy combustion and capture of CO2
    Autorzy:
    Ziółkowski, P.
    Zakrzewski, W.
    Badur, J.
    Kaczmarczyk, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/240714.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Inverse Brayton cycle
    Brayton cycle
    gas-steam unit
    oxy combustion
    CCS
    thermodynamic analysis
    numerical analysis
    CFM
    Obieg Braytona-Joule'a
    blok gazowo-parowy
    spalanie w tlenie
    analiza termodynamiczna
    analiza numeryczna
    Opis:
    In this paper, thermodynamic analysis of a proposed innovative double Brayton cycle with the use of oxy combustion and capture of CO2, is presented. For that purpose, the computation flow mechanics (CFM) approach has been developed. The double Brayton cycle (DBC) consists of primary Brayton and secondary inverse Brayton cycle. Inversion means that the role of the compressor and the gas turbine is changed and firstly we have expansion before compression. Additionally, the workingfluid in the DBC with the use of oxy combustion and CO2 capture contains a great amount of H2O and CO2, and the condensation process of steam (H2O) overlaps in negative pressure conditions. The analysis has been done for variants values of the compression ratio, which determines the lowest pressure in the double Brayton cycle.
    Źródło:
    Archives of Thermodynamics; 2013, 34, 2; 23-38
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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