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    Wyświetlanie 1-12 z 12
    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:
    Parametric analysis of the efficiency of the combined gas-steam turbine unit of a hybrid cycle for the FPSO vessel
    Autorzy:
    Serbin, Serhiy
    Washchilenko, Nikolay
    Dzida, Marek
    Kowalski, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/2033277.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    combined-cycle
    gas turbine
    steam turbine
    power plant
    Opis:
    A thermal diagram of the combined gas‒steam turbine unit of a hybrid cycle, which is an energy complex consisting of a base gas turbine engine with a steam turbine heat recovery circuit and a steam-injected gas turbine operating with overexpansion, is proposed. A mathematical model of a power plant has been developed, taking into consideration the features of thermodynamic processes of simple, binary, and steam-injected gas‒steam cycles. Thermodynamic investigations and optimization of the parameters of a combined installation of a hybrid cycle for the generation of electrical energy have been carried out. Three-dimensional calculations of the combustion chamber of a steam-injected gas turbine were carried out, which confirmed the low emissions of the main toxic components.
    Źródło:
    Polish Maritime Research; 2021, 4; 122-132
    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:
    Analysis of operation of the gas turbine in a poligeneration combined cycle
    Autorzy:
    Bartela, Ł.
    Kotowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/240025.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    integrated gasification combined cycle
    gas turbine
    natural gas and syngas fuel mixture
    thermodynamic analysis
    change of load
    układy gazowo-parowe zintegrowane ze zgazowaniem węgla
    turbina gazowa
    mieszanina
    gaz ziemny
    paliwo
    gaz syntetyczny
    analiza termodynamiczna
    zmiana obciążenia
    Opis:
    In the paper the results of analysis of an integrated gasification combined cycle IGCC polygeneration system, of which the task is to produce both electricity and synthesis gas, are shown. Assuming the structure of the system and the power rating of a combined cycle, the consumption of the synthesis gas for chemical production makes it necessary to supplement the lack of synthesis gas used for electricity production with the natural gas. As a result a change of the composition of the fuel gas supplied to the gas turbine occurs. In the paper the influence of the change of gas composition on the gas turbine characteristics is shown. In the calculations of the gas turbine the own computational algorithm was used. During the study the influence of the change of composition of gaseous fuel on the characteristic quantities was examined. The calculations were realized for different cases of cooling of the gas turbine expander's blades (constant cooling air mass flow, constant cooling air index, constant temperature of blade material). Subsequently, the influence of the degree of integration of the gas turbine with the air separation unit on the main characteristics was analyzed.
    Źródło:
    Archives of Thermodynamics; 2013, 34, 4; 137-159
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    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:
    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:
    Energetic efficiency of the combined ORC and gas turbine installation powered by the anaerobic sewage sludge stabilization system
    Autorzy:
    Matysko, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/240869.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ORC
    sludge
    biogas
    gas turbine
    ścieki
    biogaz
    turbina gazowa
    Opis:
    The present paper describes a cycle, which may be applied in sewage treatment plants as a system to convert biological waste into process heat and electricity. In sludge stabilization processes anaerobic fermentation acts as the source of methane, which can be used then to generate heat and electric current in gas turbines. Products of high-temperature oxidation can be utilized in organic Rankine cycles to generate electric power. Waste heat is used for heating the fermenting biomass. Energy balance equations mentioned in the thesis: organic Rankine cycle, regenerative gas turbine engine, anaerobic sludge stabilization system.
    Źródło:
    Archives of Thermodynamics; 2018, 39, 4; 71--83
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reduction of CO2 emissions from offshore combined cycle diesel engine-steam turbine power plant powered by alternative fuels
    Autorzy:
    Olszewski, Wojciech
    Dzida, Marek
    Nguyen, Van Giao
    Cao, Dao Nam
    Powiązania:
    https://bibliotekanauki.pl/articles/34613948.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship power plants
    alternative marine fuel
    greenhouse gases
    CO2 emissions
    combined power system
    diesel engines
    steam turbine
    gas turbine
    Opis:
    Diverse forms of environmental pollution arise with the introduction of materials or energy that exert adverse effects on human health, climate patterns, ecosystems, and beyond. Rigorous emission regulations for gases resulting from fuel combustion are being enforced by the European Union and the International Maritime Organization (IMO), directed at maritime sectors to mitigate emissions of SOx, NOx, and CO2. The IMO envisions the realisation of its 2050 targets through a suite of strategies encompassing deliberate reductions in vessel speed, enhanced ship operations, improved propulsion systems, and a transition towards low and zero-emission fuels such as LNG, methanol, hydrogen, and ammonia. While the majority of vessels currently depend on heavy fuel or low-sulphur fuel oil, novel designs integrating alternative fuels are gaining prominence. Technologies like exhaust gas purification systems, LNG, and methanol are being embraced to achieve minimised emissions. This study introduces the concept of a high-power combined ship system, composed of a primary main engine, a diesel engine, and a steam turbine system, harnessing the energy contained within the flue gases of the main combustion engine. Assumptions, constraints for calculations, and a thermodynamic evaluation of the combined cycle are outlined. Additionally, the study scrutinises the utilisation of alternative fuels for ship propulsion and their potential to curtail exhaust emissions, with a specific focus on reducing CO2 output.
    Źródło:
    Polish Maritime Research; 2023, 3; 71-80
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energetic and exergetic analysis of a triple-pressure reheat combined cycle power using different primary movers
    Autorzy:
    Almutairi, Abdulrahman
    Alhajeri, Hamad
    Alenezi, Abdulrahman
    Powiązania:
    https://bibliotekanauki.pl/articles/240192.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    exergy
    aeroderivative
    gas turbine
    reheat and waste exergy
    egzergia
    turbina gazowa
    Opis:
    In this work, actual operating data for Sabiya combined cycle power plant located in Kuwait were used to conduct the performance evaluation based on the energetic and exergetic analysis. The proposed system consist of an advanced gas turbine engines, with two triple pressure reheat heat recovery steam generator, and one steam turbine. Three types of primary movers were selected carefully, in order to cover different types, sizes and technologies. The movers are gas turbine engine frame 9FA, LM6000 and GT26. The proposed models have been developed using specialised software and validated with the manufacturer’s data featuring a high level of compatibility. The performance of a combined cycle power plant was investigated for different operating conditions. The result shows that the highest exergy destruction takes place in 9FA engine due to high irreversibility in combustion chamber because of low-pressure ratio, which causes low inlet temperature of compressed air to the combustion chamber. The 9FA engine also has the highest exergy loss due to high exhaust gases temperature, which is caused high useful work from a steam turbine. The GT26-reheat gas turbine engine constitute the best choose as primary mover due to low waste exergy, which is equal to 43.93% whereas 9FA and LM6000 equal to 47.27% and 45.17%, respectively. LM6000 aeroderivative gas turbine is considered the second best choice but the combined cycle power plant will consist of a large number of engines compared to other industrial gas turbine engine, and that may increase the number of auxiliary equipment, capital and maintenance cost.
    Źródło:
    Archives of Thermodynamics; 2019, 40, 2; 87-105
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative analysis of thermodynamic cycles of selected nuclear ship power plants with hightemperature helium- cooled nuclear reactor
    Autorzy:
    Szewczuk-Krypa, N.
    Grzymkowska, A.
    Głuch, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/260189.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    nuclear ship power plant
    nuclear reactor
    HTGR
    gas turbine
    steam turbine
    combined cycle
    Opis:
    This paper presents a comparative analysis of thermodynamic cycles of two ship power plant systems with a hightemperature helium- cooled nuclear reactor. The first of them is a gas system with recuperator , in which classical gas chamber is substituted for a HTGR reactor (High Temperature Gas-cooled Reactor) . The second of the considered cycles is a combined gas-steam system where working medium flux from gas turbine outlet is directed into waste heat boiler and its heat is utilized for production of superheated steam to drive steam turbine. Preliminary calculations of the combine cycles showed that it is necessary to expand the system by adding to its steam part an inter-stage overheat for secondary steam, owing to that a required degree of steam dryness at outlet from the turbine can be reached, ensuring its correct operational conditions. The analyzed power systems were compared to each other with regard to efficiency of their thermodynamic cycles. Also, efficiency of particular cycles were subjected to optimization in respect to such parameters as : working gas temperature at outlet from reactor in gas system as well as steam pressure at outlet from waste heat boiler and partition pressure in steam part of combined system. Advantages of nuclear power plants compared with the classical power systems dominating currently in sea transport were also discussed.
    Źródło:
    Polish Maritime Research; 2018, S 1; 218-224
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of electricity generation in a integrated gasification combined cycle unit
    Analiza pracy układu wytwarzania energii elektrycznej w bloku IGCC
    Autorzy:
    Bartela, Ł.
    Kotowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/172889.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wytwarzanie energii
    energia elektryczna
    IGCC
    układ gazowo-parowy
    turbina gazowa
    electricity generation
    electric energy
    gas-steam system
    gas turbine
    Opis:
    This paper presents an analysis of the electricity generation system, which, according to the presented assumptions, is part of the integrated gasification combined cycle (IGCC). In this study, fuels with characteristics different from the ones of natural gas as well as two aspects of their use in combined cycles were considered. In the first step, a gas turbine designed for natural gas combustion (but operated in the IGCC system) was analyzed. The operation of the turbine was analyzed with or without regulation ensuring the high temperature of flue gases leaving the expander. In the next step, the whole system of electricity generation was analyzed. For this step, a suitable steam cycle structure was assumed. For different cases of system operation, the influence of steam pressure produced in three levels of heat recovery steam generator on the efficiency of the steam cycle as well as the effectiveness of the entire electricity generation system was studied. The analysis was performed for four cases that covered two different gaseous fuels, use of gas turbine regulation and use of supplementary firing.
    W artykule zaprezentowano wyniki analizy układu wytwarzania energii elektrycznej, który zgodnie z prezentowanymi założeniami jest częścią układu gazowo-parowego zintegrowanego ze zgazowaniem węgla (IGCC). W pracy omówiono dwa aspekty związane z wykorzystywaniem w obiegu kombinowanym paliwa o odmiennej charakterystyce w stosunku do gazu ziemnego. W pierwszej kolejności analizie poddano charakter pracy turbiny gazowej projektowanej dla spalania gazu ziemnego, ale wykorzystywanej w układzie IGCC. Analizowano tutaj pracę turbiny bez regulacji, jak również z regulacją mającą na celu utrzymanie na wysokim poziomie temperatury spalin opuszczających ekspander maszyny. W kolejnym etapie przeprowadzono analizę obejmującą cały układ wytwarzania energii elektrycznej. W tym celu przyjęto odpowiednią strukturę obiegu parowego. Dla różnych wariantów pracy układu badano wpływ poziomów ciśnień pary produkowanej w poszczególnych profilach kotła odzyskowego na wskaźniki efektywności pracy samego obiegu parowego, jak również całego układu wytwarzania energii elektrycznej. Analizę prowadzono dla czterech wariantów obejmujących stosowanie dwóch różnych paliw, stosowanie regulacji turbiny gazowej oraz stosowanie instalacji dopalania.
    Źródło:
    Archiwum Energetyki; 2012, 42, 3/4; 3-14
    0066-684X
    Pojawia się w:
    Archiwum Energetyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic evaluation of a combined heat and power plant with carbon dioxide capture installation integrated with a gas turbine
    Ocena termodynamiczna bloku elektrociepłowni współpracującej z instalacją wychwytu dwutlenku węgla przy jej integracji z turbiną gazową
    Autorzy:
    Bartela, Ł.
    Skorek-Osikowska, A.
    Rożek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/172973.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    analiza termodynamiczna
    wychwyt CO2
    turbina gazowa
    elektrociepłownia
    thermodynamic analysis
    CO2 capture
    gas turbine
    CHP plant
    Opis:
    The paper presents the results of a thermodynamic analysis carried out for a coal-fired combined heat and power plant (CHP) working at supercritical parameters, integrated with an absorption based carbon dioxide capture installation. The power of a plant was set at 320 MW, and it was assumed that it produces heat in accordance with heat demand characteristics. It was also assumed that in order to obtain heat for the desorption unit, the plant was integrated with a gas turbine installation, at the outlet of which a recovery heat exchanger was mounted. For the analysis, the values of the characteristic quantities of the gas turbine were adopted. Power of the machine, in turn, depended on the heat demand of the desorption process. For the evaluation of the integration of a CHP plant, the defined in the paper average annual thermodynamic quantities and unit carbon dioxide emissions were used.
    W artykule przedstawiono rezultaty analizy termodynamicznej przeprowadzonej dla bloku elektrociepłowni węglowej na parametry nadkrytyczne zintegrowanej z absorpcyjną instalacją wychwytu dwutlenku węgla. Moc elektrociepłowni określono na poziomie 320 MW, zakładając, że produkuje ona ciepło zgodnie z przyjętymi charakterystykami zapotrzebowania. Założono ponadto, iż dla potrzeb pozyskania ciepła dla procesu desorpcji blok elektrociepłowni zintegrowany został z instalacją turbiny gazowej, na wylocie której zabudowano wymiennik odzyskowy. Dla celów analizy określono odpowiednie wielkości charakteryzujące turbinę gazową. Moc maszyny z kolei zależała od ciepłochłonności procesu desorpcji. Przy ocenie integracji elektrociepłowni posłużono się zdefiniowanymi w pracy średniorocznymi wskaźnikami termodynamicznymi oraz emisją jednostkową dwutlenku węgla.
    Źródło:
    Archiwum Energetyki; 2012, 42, 2; 37-47
    0066-684X
    Pojawia się w:
    Archiwum Energetyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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