Energy Analysis of Main Propulsion Steam Turbine from Conventional LNG Carrier at Three Different Loads
2019; University of Dubrovnik; Volume: 66; Issue: 1 Linguagem: Inglês
10.17818/nm/2019/1.2
ISSN1848-6320
Autores Tópico(s)Cyclone Separators and Fluid Dynamics
ResumoThis paper presents energy analysis of entire marine main propulsion steam turbine and both of its cylinders at three different loads.Marine steam propulsion plant in which main turbine operates is described in detail.Measured data from real exploitation at each required turbine operating point enables calculation of energy losses and efficiencies.Real developed power distribution between both turbine cylinders is not the same at all observed loads.Energy losses and efficiencies of main turbine cylinders and entire main steam turbine increases during the increase in turbine load.An increase in turbine load resulted with in a sharp increase in energy efficiency of HPC (High Pressure Cylinder) from 51.01 % to 74.13 %, while the increase in energy efficiency of LPC (Low Pressure Cylinder) is not as sharp (from 73.88 % to 78.50 %).The change in energy efficiency of the entire main steam turbine during the load increase (from 65.54 % to 79.45 %) is mostly influenced by a change in energy efficiency of HPC.Energy loss and real developed power ratio is reversely proportional to energy efficiencies and losses of both steam turbine cylinders and the entire turbine. Sažetak Ovaj članak prikazuje energijsku analizu čitave glavne propulzijske parne turbine i oba njezina kućišta pri trima različitim opterećenjima. Opisuje se podrobno, brodsko parno propulzijsko postrojenje u kojemu radi glavna turbina. Izmjereni podatci stvarne eksploatacije za svaku zahtijevanu radnu točka turbine omogućavaju izračun energijskih gubitaka i učinkovitosti
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