Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Exergy destruction" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-4 z 4
    Tytuł:
    Thermodynamic analysis of a combined cycle power plant located in Jordan: A case study
    Autorzy:
    Bataineh, Khaled
    Khaleel, Bara A.
    Powiązania:
    https://bibliotekanauki.pl/articles/240565.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    combined cycle power plant
    energy efficiency
    exergy efficiency
    exergy destruction
    exergy losses
    Opis:
    Efficiency and electrical power output of combined cycle power plants vary according to the ambient conditions. The amount of these variations greatly affects electricity production, fuel consumption, and plant incomes. Obviously, many world countries have a wide range of climatic conditions, which impact the performance of power plants. In this paper, a thermodynamic analysis of an operating power plant located in Jordan is performed with actual operating data acquired from the power plant control unit. The analysis is performed by using first and second laws of thermodynamics. Energy and exergy efficiencies of each component of the power plant system are calculated and the effect of ambient temperature on the components performance is studied. The effects of gas turbine pressure ratio, gas turbine inlet temperature, load and ambient conditions on the combined cycle efficiency, power outputs and exergy destruction are investigated. Energy and exergy efficiencies of the combined cycle power plant are found as 45.29%, and 42.73% respectively when the ambient temperature is 34°C. Furthermore, it is found that the combustion chamber has the largest exergy destruction rate among the system components. The results showed that 73% of the total exergy destruction occurs in the combustion chamber when the ambient temperature is 34°C. Moreover, the results show that the second major exergy loss is in HRSC. The results show that the energy and exergy efficiency of the combined cycle power plant decreases as the ambient temperature increases. According to the calculation results, improvement and modification suggestions are presented.
    Źródło:
    Archives of Thermodynamics; 2020, 41, 1; 95-123
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A study of LNG processes to determine the effect of end flash systems on efficiency
    Autorzy:
    Akinsipe, Oluwagbemisola
    Anozie, Ambrose
    Babatunde, Damilola
    Powiązania:
    https://bibliotekanauki.pl/articles/240578.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    C3MR
    DMR
    Efficiency
    Exergy destruction
    End flash
    LNG
    Opis:
    This paper describes the simulation, exergy analysis and comparison of two commonly applied liquefaction of technologies natural gas, namely: propane precooled mixed refrigerant process (C3MR) and dual mixed refrigerant process (DMR) alongside two modifications of each employing end flash systems. The C3MR and DMR process schemes were simulated using the commercial software to mathematically model chemical processes. These schemes were then analysed using energy and exergy calculations to determine their performances. The exergy efficiency for the C3MR processes without end flash system, with simple end flash system and extended end flash system were evaluated as 29%, 31%, and 33%, respectively, while the exergy efficiency for the DMR processes without end flash system, with simple end flash system, and extended end flash system were evaluated as 26%, 25.5%, and 30%, respectively. The results achieved show that the extended end flash system versions of the schemes are most efficient. Furthermore, the exergy analysis depicted that the major equipment that must be enhanced in order to improve the cycle exergy efficiencies are the compressors, heat exchangers, and coolers.
    Źródło:
    Archives of Thermodynamics; 2020, 41, 2; 35-63
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Exergy Analysis to Textile Printing Process
    Analiza zużycia energii w procesie druku
    Autorzy:
    Cay, A.
    Ozguney, A. T.
    Yavas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/234278.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    analiza energii
    drukowanie tkanin
    parowanie
    zużycia energii w procesie druku
    exergy analysis
    textile printing
    steaming
    hot air fixation
    exergy destruction
    Opis:
    This study reveals an exergetic analysis of the reactive and pigment printing processes. Exergy models of the printing processes were formed and each step examined in terms of exergetic parameters. In the printing machine, the reactive printing process led to a higher specific exergy use due to the penetration requirement of the printing paste. The exergy efficiency in the subsequent drying after printing was found to be independent of the printing method, but affected by the fabric structure, which was calculated to be between 3.8% and 4.8%. In the fixation step, pigment printing provided the highest exergy efficiency, calculated to be 2.15%, due to the direct heating of the fixation air. It was observed for the fixation step that the boiler unit of the steaming process and the burner of the hot air fixation process led to the highest exergy destruction rates. The total exergy destruction rate in pigment printing was found to be higher than in the washing and final drying stages of reactive printing alone; thus, it was shown that the exergetic improvement of the post-washing and drying of reactive printing is of great importance.
    Praca przedstawia analizę zużycia energii w procesie druku reaktywnego i pigmentowego. Skonstruowano modele egzergetyczne procesu druku i przeanalizowano każdy krok pod względem parametrów wpływających na egzergię. W maszynie drukarskiej, reaktywny proces drukowania prowadzi do podwyższenia egzergii w wyniku zapotrzebowania na penetrację pasty drukarskiej. Stwierdzono, że wydajność egzergii w procesie suszenia po drukowaniu jest niezależna od metody drukowania, zależy natomiast od struktury materiału i obliczono, że zawiera się ona w granicach 3.8% do 4.8%. W procesie stabilizacji drukowanie pigmentowe prowadzi do najwyższej egzergii, która wynosi 2.15%, w wyniku bezpośredniego utrwalania w powietrzu. Stwierdzono, że zastosowanie dla fazy utrwalania kotła parowego stosowanego w procesie parowania i palnika w procesie wysokotemperaturowego utrwalania prowadzi do najwyższych wartości destrukcji egzergii. Stwierdzono, że przy druku reaktywnym całkowita wartość destrukcji egzergii w procesie druku pigmentowego była wyższa niż w fazach prania i końcowego suszenia. Wynika z tego, że przy druku reaktywnym bardzo ważnym jest egzergetyczne polepszenie końcowej fazy prania i suszenia.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2012, 6A (95); 37-42
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Air bottoming combined cycle performance analyses by the combined effect of variable parameters
    Autorzy:
    Khan, Mohammad N
    Alzafiri, Dhare
    Powiązania:
    https://bibliotekanauki.pl/articles/27309845.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    topping cycle
    air bottoming cycle
    net power output
    thermal efficiency
    total exergy
    destruction
    exergetic efficiency
    cykl uzupełniania
    cykl opadania powietrza
    moc wyjściowa netto
    wydajność termiczna
    całkowita egzergia
    zniszczenie
    efektywność egzergetyczna
    Opis:
    To meet the continuous demand for energy of industrial as well as commercial sectors, researchers focus on increasing the power generating capacity of gas turbine power plants. In this regard, the combined cycle is a better solution in terms of environmental aspects and power generation as compared to a simple gas turbine power plant. The present study is the thermodynamic investigation of five possible air bottoming combined cycles in which the topping cycle is a simple gas turbine cycle, regenerative gas turbine cycle, inter-cool gas turbine cycle, reheat gas turbine cycle, and intercool-reheat gas turbine cycle. The effect of pressure ratio of the topping cycle, the turbine inlet temperature of topping cycle, and ambient temperature on net power output, thermal efficiency, total exergy destruction, and exergetic efficiency of the combined cycle have been analyzed. The ratio of the net power output of the combined cycle to that of the topping cycle is maximal in the case when the topping cycle is a simple gas turbine cycle. The ratio of net power output and the total exergy destruction of the combined cycle to those of the topping cycle decrease with pressure ratio for all the combinations under study except for the case when the topping cycle is the regenerative gas turbine cycle.
    Źródło:
    Archive of Mechanical Engineering; 2022, LXIX, 3; 497--517
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies