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    Wyświetlanie 1-3 z 3
    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:
    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
    Tytuł:
    The thermodynamic analysis of the Szewalski hierarchic vapour cycle cooperating with a system of waste heat recovery
    Autorzy:
    Ziółkowski, P.
    Kowalczyk, T.
    Hernet, J.
    Kornet, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/175466.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    binary cycle
    waste heat
    ORC
    thermodynamical analysis
    numerical
    analysis
    CFM (computational flow mechanics)
    Opis:
    In this paper, thermodynamic analysis of the Szewalski hierarchic vapour cycle cooperating with a system of waste heat recovery from exhaust gases are presented. According to that purpose, the CFM (computation flow mechanics) approach has been used correctly. In this paper, traditional steam cycle, the bottoming organic Rankine cycle (ORC) and a system of waste heat recovery with use of water with temperature 90 ◦C have been analyzed. The Szewalski binary vapour cycle is providing steam as the working fluid in the high temperature part of the cycle, while another fluid – organic working fluid – as the working substance substituting conventional steam over the temperature range represented by the low pressure steam expansion. The steam cycle for reference conditions, the Szewalski binary vapour cycle, and the Szewalski hierarchic vapour cycle cooperating with a system of waste heat recovery have been comprised. Four working fluids in the low temperature part of binary cycle such as ammonia, propane, isobutene and ethanol have also been investigated. Moreover, the Szewalski cycle is a good resolution for proper using heat flux received from the exhaust gases heat regeneration system.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2015, 129; 51-75
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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