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Pregled bibliografske jedinice broj: 874819

Časopis

Autori: Mrzljak, Vedran; Poljak, Igor; Mrakovčić, Tomislav
Naslov: Energy and exergy analysis of the turbo-generators and steam turbine for the main feed water pump drive on LNG carrier
( Energy and exergy analysis of the turbo-generators and steam turbine for the main feed water pump drive on LNG carrier )
Izvornik: Energy conversion and management (0196-8904) 140 (2017); 307-323
Vrsta rada: članak
Ključne riječi: Turbo-generator ; Main feed water pump ; Energy efficiency ; Exergy efficiency ; Exergy destruction
( Turbo-generator ; Main feed water pump ; Energy efficiency ; Exergy efficiency ; Exergy destruction )
Sažetak:
Nowadays, marine propulsion systems are mainly based on internal combustion diesel engines. Despite this fact, a number of LNG carriers have steam propulsion plants. In such plants, steam turbines are used not only for ship propulsion, but also for electrical power generation and main feed water pump drive. Marine turbo-generators and steam turbine for the main feed water pump drive were investigated on the analyzed LNG carrier with steam propulsion plant. The measurements of various operating parameters were performed and obtained data were used for energy and exergy analysis. All the measurements and calculations were performed during the ship acceleration. The analysis shows that the energy and exergy efficiencies of both analyzed low-power turbines vary between 46% and 62% what is significantly lower in comparison with the high-power steam turbines. The ambient temperature has a low impact on exergy efficiency of analyzed turbines (change in ambient temperature for 10 °C causes less than 1% change in exergy efficiency). The highest exergy efficiencies were achieved at the lowest observed ambient temperature. Also, the highest efficiencies were achieved at 71.5% of maximum developed turbo-generator power while the highest efficiencies of steam turbine for the main feed water pump drive were achieved at maximum turbine developed power. Replacing the existing steam turbine for the main feed water pump drive with an electric motor would increase the turbo-generator energy and exergy efficiencies for at least 1–3% in all analyzed operating points.
Izvorni jezik: eng
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Strojarstvo
URL Internet adrese: http://www.sciencedirect.com/science/article/pii/S0196890417302091
https://doi.org/10.1016/j.enconman.2017.03.007
Broj citata:
Altmetric:
DOI: 10.1016/j.enconman.2017.03.007
URL cjelovitog teksta:
Google Scholar: Energy and exergy analysis of the turbo-generators and steam turbine for the main feed water pump drive on LNG carrier
Upisao u CROSBI: Vedran Mrzljak (vedran.mrzljak@riteh.hr), 13. Svi. 2017. u 19:20 sati



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