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Wyszukujesz frazę "Stirling cycle" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Design of dual flywheels with connecting rods for gamma-type Stirling engine
    Autorzy:
    Lekchaum, S.
    Locharoenrat, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/200723.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Stirling engine
    Stirling cycle
    flywheels
    connecting rod
    silnik Stirlinga
    cykl Stirlinga
    koła zamachowe
    korbowód
    Opis:
    A gamma-type Stirling engine, based on a dual flywheels’ concept, was designed and fabricated. Optimized design of the engine, with connecting rods, was introduced to achieve a steady state of the Stirling engine cycle. Performances of the engine were therefore presented in terms of piston motion, inertia force, angular speed, pressure-volume diagram and temperature difference. It was found that optimum length of 45 mm from the connecting rod was able to reach the maximum output mechanical speed of 738 rpm at the maximum inertia force of 0.5 N. The engine offered thermal efficiency of 46.15% and total output power of 1.21 W under the temperature difference of 267 K. In the future, this design is expected to prove useful for applications in portable generators.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 6; 919-924
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic analysis of a thermoacoustic travelling wave engine
    Autorzy:
    Ruziewicz, A.
    Kruse, A.
    Gnutek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/95348.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    thermoacoustic engine
    Stirling cycle
    waste energy
    energy conversion
    silnik termoakustyczny
    obieg Stirlinga
    energia odpadowa
    konwersja energii
    Opis:
    Thermoacoustics has become a promising technology to use heat from low temperature sources to drive engines. This study proposes a single-stage thermoacoustic travelling-wave engine for waste-heat recovery at 150°C. All the construction details of such a system are provided. A recently developed configuration of a looped tube with an impedance matching side-branch stub is proposed. A numerical model of the engine is built in DeltaEC software to conduct the simulations. Furthermore, a detailed thermodynamic analysis of the engine is presented, including an energy balance, a description of the basic acoustic parameters in a steady state, as well as a study of a variable load influence on the performance of the engine. The Authors pointed out the necessity of the engine optimization and a proper choice of load related acoustic impedance, which would consider a trade-off between high power and high efficiency. Eventually, a possibility of achieving 40% exergy efficiency of the proposed engine is confirmed.
    Źródło:
    Journal of Mechanical and Energy Engineering; 2018, 2, 1; 67-74
    2544-0780
    2544-1671
    Pojawia się w:
    Journal of Mechanical and Energy Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic analysis and analytical simulation of the Rallis modified Stirling cycle
    Autorzy:
    Ranjan, Ravi Kant
    Verma, Suresh Kant
    Powiązania:
    https://bibliotekanauki.pl/articles/240284.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rallis modified Stirling cycle engine
    nonisothermal characteristics
    power output
    thermal efficiency
    charakterystyki nieizotermiczne
    moc użyteczna
    sprawność cieplna
    Opis:
    A Stirling cycle was developed by Rallis considering the adiabatic behaviour instead of isothermal behaviour of working fluid inside the expansion/compression volume, since the isothermal processes are very difficult to be realised in actual practice due to irreversibilities. In order to increase the performance of Rallis Stirling cycle engine, two modified versions of Rallis Stirling cycle engine model have been proposed and developed, called as Rallis modified Stirling cycle engine (RMSE). In this paper, the thermodynamic analysis of the developed models have been carried out and the simulated results are compared with the Rallis ideal model of Stirling cycle engine, as this model describes more accurately the thermodynamic cycle of practical Stirling machines. The results reveal the fact that the thermal efficiency of RMSE I model is enhanced by 38.06% and that of RMSE II model by 48.42%, whereas the power output is increased by 58.05% and 78.19% in case of RMSE I and RMSE II model respectively, when compared with the Rallis ideal adiabatic model of Stirling engine.
    Źródło:
    Archives of Thermodynamics; 2019, 40, 2; 35-67
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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