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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

Dzida M., Mucharski J.

Polish Maritime Research

2009

nr 2

40-44

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.

Kombinowana siłownia okrętowa z silnikiem tłokowym wolnoobrotowym z turbiną mocy i turbiną parową

Dzida M., Mucharski J.

Zeszyty Naukowe / Wyższa Szkoła Morska w Szczecinie

2003

nr 71

117-129

Przedstawiono koncepcję układu kombinowanego, algorytm i obliczenia poszczególnych podukładów: turbodoładowania, turbiny mocy i obiegu turbiny parowej. Podano założenia i przyjęte ograniczenia do obliczeń, jak również niektóre parametry układu skonfrontowano z badaniami eksperymentalnymi dostępnymi w literaturze. Optymalizację energetyczną całej kombinowanej siłowni okrętowej przeprowadzono tylko z punktu termodynamicznego. Nie zajmowano się analizą techniczno-ekonomiczną.

The paper presents the concept of a combined ship power plant including diesel engine, gas turbine and steam turbine, and the algorithm and calculations of particular subsystems: of turbocharging, power turbine and steam turbine circulation. Assumptions and assumed restrictions for calculations have been presented; also, some parameters of the system have been confronted with the results of experimental research available in literature. The power optimisation of the whole combined power plant has been performed only from the thermodynamic point of view. No attention has been paid to a technical and economical analysis.