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    Wyświetlanie 1-11 z 11
    Tytuł:
    Selected combined power systems consisted of selfignition engine and steam turbine
    Autorzy:
    Olszewski, W.
    Dzida, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/260028.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    self-ignition engine
    combined systems
    steam turbine
    Opis:
    This paper presents optimization of selected combined diesel engine-steam turbine systems. Two systems: the system combined with waste heat one-pressure boiler only and its version containing additionally low-pressure boiler proper feeding degasifier and the system of two-pressure cycle, were taken into considerations. Their surplus values of power output and efficiency associated with utilization of waste heat contained in piston engine exhaust gas were compared to each other. For the considerations two high-power low-speed engines were taken into account. The main engines of comparable power of about 54 MW produced by Wartsila and MAN Diesel & Turbo firms, were selected.
    Źródło:
    Polish Maritime Research; 2018, S 1; 198-203
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the possible increasing of efficiency of ship power plant with the system combined of marine Diesel engine, gas turbine and steam turbine in case of main engine cooperation with the gas turbine fed in series and the steam turbine
    Autorzy:
    Dzida, M.
    Girtler, J.
    Dzida, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/258820.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship power plants
    combined systems
    diesel engine
    gas turbine
    steam turbine
    Opis:
    The article presents a concept of a combined large power ship propulsion system consisting of the leading Diesel main engine, associated with a power gas turbine and the steam turbine system which utilise the energy contained in the exhaust gas leaving the Diesel engine. In the examined variant of the combined system the power turbine is fed in series with the exhaust gas. A calculation algorithm is given along with the results of calculations of particular subsystems of: the turbocharging system, the power gas turbine, and the steam turbine cycle. Assumptions and limits adopted in the calculations are presented. Selected system parameters were confronted with the results of experimental investigations available in the literature. The power optimisation of the entire combined ship power plant was only performed taking into account the thermodynamic point of view, leaving aside technical and economic aspects. Numerical calculations were performed for the 52 MW low-speed Diesel engine produced by Wärtsilä.
    Źródło:
    Polish Maritime Research; 2009, 3; 26-31
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the possible increasing of efficiency of ship power plant with the system combined of marine diesel engine, gas turbine and steam turbine, at the main engine - steam turbine mode of cooperation
    Autorzy:
    Dzida, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/258636.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    combined systems
    gas turbine
    piston combustion engine
    ship power plants
    steam turbine
    Opis:
    This paper presents a concept of a ship combined high-power system consisted of main piston engine and associated with it: gas power turbine and steam turbine subsystems, which make use of energy contained in exhaust gas from main piston engine. The combined system consisted of a piston combustion engine and an associated with it steam turbine subsystem, was considered. An algorithm and results of calculations of the particular subsystems, i.e. of piston combustion engine and steam turbine, are presented. Assumptions and limitations taken for calculations, as well as comparison of values of some parameters of the system and results of experimental investigations available from the literature sources, are also given. The system’s energy optimization was performed from the thermodynamic point of view only. Any technical – economical analyses were not carried out. Numerical calculations were performed for a Wärtsilä slow-speed diesel engine of 52 MW output power.
    Źródło:
    Polish Maritime Research; 2009, 1; 47-52
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the possible increasing of efficiency of ship power plant with the system combined of marine diesel engine, gas turbine and steam turbine in case of main engine cooperation with the gas turbine fed in parallel and the steam turbine
    Autorzy:
    Dzida, M.
    Mucharski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/258706.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    marine power plants
    combined systems
    piston internal combustion engines
    gas turbine
    steam turbine
    Opis:
    The article presents a concept of a combined large-power ship propulsion system, composed of the leading internal combustion main engine associated with a power gas turbine and the steam turbine system, both utilising the energy taken from the main engine exhaust gas. In the examined variant the power turbine, arranged in parallel with a turbocharger, is fed with the exhaust gas from the exhaust manifold. A calculation algorithm is presented, along with sample calculations for particular subsystems: supercharging, gas power turbine, and steam turbine system. Assumptions were formulated for the calculations, and were complemented by the adopted limits. Selected system parameters were confronted with the experimental investigations available in the literature. The performed power optimisation of the entire combined marine power plant took only into account the thermodynamic point of view, leaving aside technical and economic aspects. The numerical calculations were performed for the 52 MW low-speed marine diesel engine.
    Źródło:
    Polish Maritime Research; 2009, 2; 40-44
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparing combined gas tubrine/steam turbine and marine low speed piston engine/steam turbine systems in naval applications
    Autorzy:
    Dzida, M.
    Olszewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/260049.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    marine power plants
    combined systems
    piston internal combustion engine
    gas turbine
    steam turbine
    Opis:
    The article compares combined systems in naval applications. The object of the analysis is the combined gas turbine/steam turbine system which is compared to the combined marine low-speed Diesel engine/steam turbine system. The comparison refers to the additional power and efficiency increase resulting from the use of the heat in the exhaust gas leaving the piston engine or the gas turbine. In the analysis a number of types of gas turbines with different exhaust gas temperatures and two large-power low-speed piston engines have been taken into account. The comparison bases on the assumption about comparable power ranges of the main engine.
    Źródło:
    Polish Maritime Research; 2011, 4; 43-48
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Possible use of combined Diesel engine / steam turbine systems in ship power plants
    Możliwości zastosowania układów kombinowanych: silnik Diesla – turbina parowa w siłowniach okrętowych
    Autorzy:
    Olszewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/360519.pdf
    Data publikacji:
    2011
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    siłownie okrętowe
    układy kombinowane
    tłokowy silnik spalinowy
    turbina gazowa
    turbina parowa
    ship power plants
    combined systems
    piston internal combustion engine
    gas turbin
    steam turbine
    Opis:
    The article presents a combined system of a large power ship power plant. The system consists of a piston internal combustion engine and the steam turbine system which utilises the energy transported with the exhaust gas leaving the internal combustion engine. The analysed variant of the combined cycle includes a Diesel engine and a steam turbine with a single-pressure waste-heat boiler. The numerical calculations were performed for two low-speed internal combustion engines made by Wärtsilä and MAN Diesel & Turbo, each of an approximate power output of 54 MW. The assumptions and limits which were used in the calculations done using a specially worked out code are included. The energy optimisation of the entire combined ship power plant was done taking into account only the thermodynamic point of view, leaving aside the technical and economic aspects.
    W artykule przedstawiono układ kombinowany siłowni okrętowej dużej mocy. Składa się on z silnika spalinowego tłokowego i skojarzonego z nim układu turbiny parowej, wykorzystującego energię zawartą w spalinach wylotowych silnika spalinowego. Rozpatrzono tylko wariant obiegu kombinowanego silnik Diesla – turbina parowa, z kotłem utylizacyjnym jednociśnieniowym. Podano założenia i ograniczenia oraz wyniki ob-liczeń rozpatrywanego układu z opracowanego programu komputerowego. Optymalizację energetyczną całej kombinowanej siłowni okrętowej przeprowadzono tylko z punktu termodynamicznego. Nie zajmowano się analizą techniczno-ekonomiczną. Obliczenia numeryczne wykonano dla silników spalinowych wolnoobrotowych firmy Wärtsilä oraz MAN Diesel & Turbo o mocy około 54 MW.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2011, 28 (100) z. 1; 88-94
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined heat and power systems in liquefied natural gas (LNG) regasification processes
    Autorzy:
    Łaciak, M.
    Nagy, S.
    Włodek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/299133.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    LNG
    liquefied natural gas
    unloading operation
    thermodynamic processes
    cryogenics
    LNG terminal
    combined heat and power systems
    Opis:
    Adaptation of liquefied natural gas (LNG) to the quality requirements for natural gas transportation pipeline system is a high energy intensive process. The energy for this process can be obtained include from waste heat in the industry processes, steam power blocks or sea water in LNG unloading terminal. Another way of obtaining the heat is burning of gas or other fuels. A large temperature difference between the heat sources in each of these cases, and the low temperature of LNG can be used to control of the pumping engine operation, it can pro vi de optimization and reduction of the costs. Liquefied natural gas (LNG) can be used as a source of cold to the increasing power of the cogeneration process. The article examines some practical cogeneration solutions (combined heat and called power - CHP), which can improve the efficiency of the process of regasification of LNG.
    Źródło:
    AGH Drilling, Oil, Gas; 2014, 31, 1; 91-98
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined systems of energy generation – a characterisation and classification
    Autorzy:
    Gilewski, J
    Montusiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/102889.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    combined heat and power (CHP)
    combined energy generation
    cogeneration systems
    Opis:
    The study presents issues concerning technical solutions of combined systems of energy generation which can be used primarily in low-level power plants, installed in various types of public utility sites. A detailed description is given of selected ways of powering combined energy generation systems, presenting conceptual outlines of their operation and information on their advantages, disadvantages and applications. The following systems are introduced: gas-steam, back-pressure steam turbine, extraction-condensing steam turbine, gas turbine, gas microturbine, Stirling engine, fuel cells and internal combustion piston engine. Moreover, the study addresses economic aspects of energy generation in combined systems, discussing different methodologies of cost calculation, including the one used by the European Union. The article also gives a detailed review of piston engine combined-system aggregates available in the Polish market. Type series of associated systems designed for low-power appliances are shown, produced by Polish and foreign companies such as Viessmann, Centrum Elektroniki Stosowanej CES, H. Cegielski – Poznań, KWE Technika Energetyczna, TEDOM Poland or the EPS System.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 23; 53-61
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of biomass cofiring on the optimal coefficient of the cogeneration share in a district heating system
    Autorzy:
    Ziębik, A.
    Gładysz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/240534.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cogeneration
    combined heat
    combined power
    district heating systems
    guarantees of origin
    biomass co-firing
    kogeneracja
    systemy ciepłownicze
    świadectwo pochodzenia
    biomasa
    Opis:
    The paper presents a modified algorithm for choosing the optimal coefficient of the share of cogeneration in district heating systems taking into account additional benefits concerning the promotion of highefficiency cogeneration and biomass cofiring. The optimal coefficient of the share of cogeneration depends first of all on the share of the heat required for preparing the hot tap water. The final result of investigations is an empirical equation describing the influence of the ratio of the heat flux for the production of hot tap water to the maximum flux for space heating and ventilation, as well as the share of chemical energy of biomass in the fuel mixture on the optimal value of the share of cogeneration in district heating systems. The approach presented in the paper may be applied both in back-pressure combined heat and power (CHP) plants and in extraction-condensing CHP plants.
    Źródło:
    Archives of Thermodynamics; 2014, 35, 1; 99-115
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic analysis of a new conception of supplementary firing in a combined cycle
    Autorzy:
    Kotowicz, J.
    Bartela, Ł.
    Balicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/239969.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    analiza termodynamiczna
    dodatkowe systemy spalania
    układ kombinowany
    combined cycle
    supplementary firing systems
    thermodynamic analysis
    Opis:
    The paper analyzes a new concept of integration of combined cycle with the installation of supplementary firing. The whole system was enclosed by thermodynamic analysis, which consists of a gas-steam unit with triple-pressure heat recovery steam generator. The system uses a determined model of the gas turbine and the assumptions relating to the construction features of steam-water part were made. The proposed conception involves building of supplementary firing installation only on part of the exhaust stream leaving the gas turbine. In the proposed solution superheater was divided into two sections, one of which was located on the exhaust gases leaving the installation of supplementary firing. The paper presents the results of the analyses of which the main aim was to demonstrate the superiority of the new thermodynamic concept of the supplementary firing over the classical one. For this purpose a model of a system was built, in which it was possible to carry out simulations of the gradual transition from a classically understood supplementary firing to the supplementary firing completely modified. For building of a model the GateCycle[TM] software was used.
    Źródło:
    Archives of Thermodynamics; 2010, 31, 4; 15-24
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimizing the harmony search algorithm for combined heat and power economic dispatch in american english
    Autorzy:
    Benayed, F.Z.
    Abdelhakem-Koridak, L.
    Bouadi, A.
    Rahli, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41184379.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Warszawska, Instytut Techniki Cieplnej
    Tematy:
    combined heat and power system
    harmony search algorithm
    optimization of power systems
    połączony system ciepłowniczy i elektroenergetyczny
    algorytm poszukiwania harmonii
    optymalizacja systemów energetycznych
    Opis:
    Achieving optimal utilization of multiple combined heat and power (CHP) systems is a complex problem that requires powerful methods for resolution. This paper presents a harmony search (HS) algorithm to address the economic dispatch issue in CHP (CHPED ). The recently developed metaheuristic HS algorithm has been successfully employed in a wide range of optimization problems. The method is demonstrated through a test case from existing literature and a new one proposed by the authors. Numerical results indicate that the proposed algorithm can identify superior solutions compared to traditional methods, and that the Harmony Search algorithm can be effectively applied to CHPED-related problems.
    Źródło:
    Journal of Power Technologies; 2023, 103, 1; 14-20
    1425-1353
    Pojawia się w:
    Journal of Power Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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