hrcak mascot   Srce   HID

Izvorni znanstveni članak
https://doi.org/18048/2020.59.01.

Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads

Nikola Anđelić ; University of Rijeka, Faculty of Engineering
Vedran Mrzljak   ORCID icon orcid.org/0000-0003-0323-2600 ; University of Rijeka, Faculty of Engineering
Ivan Lorencin ; University of Rijeka, Faculty of Engineering
Sandi Baressi Šegota   ORCID icon orcid.org/0000-0002-3015-1024 ; University of Rijeka, Faculty of Engineering

Puni tekst: engleski, pdf (9 MB) str. 9-34 preuzimanja: 38* citiraj
APA 6th Edition
Anđelić, N., Mrzljak, V., Lorencin, I. i Baressi Šegota, S. (2020). Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads. Pomorski zbornik, 59 (1), 9-34. Preuzeto s https://hrcak.srce.hr/249259
MLA 8th Edition
Anđelić, Nikola, et al. "Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads." Pomorski zbornik, vol. 59, br. 1, 2020, str. 9-34. https://hrcak.srce.hr/249259. Citirano 08.03.2021.
Chicago 17th Edition
Anđelić, Nikola, Vedran Mrzljak, Ivan Lorencin i Sandi Baressi Šegota. "Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads." Pomorski zbornik 59, br. 1 (2020): 9-34. https://hrcak.srce.hr/249259
Harvard
Anđelić, N., et al. (2020). 'Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads', Pomorski zbornik, 59(1), str. 9-34. Preuzeto s: https://hrcak.srce.hr/249259 (Datum pristupa: 08.03.2021.)
Vancouver
Anđelić N, Mrzljak V, Lorencin I, Baressi Šegota S. Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads. Pomorski zbornik [Internet]. 2020 [pristupljeno 08.03.2021.];59(1):9-34. Dostupno na: https://hrcak.srce.hr/249259
IEEE
N. Anđelić, V. Mrzljak, I. Lorencin i S. Baressi Šegota, "Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads", Pomorski zbornik, vol.59, br. 1, str. 9-34, 2020. [Online]. Dostupno na: https://hrcak.srce.hr/249259. [Citirano: 08.03.2021.]

Sažetak
This paper present energy and exergy analysis of the main marine steam turbine, which is used for the commercial LNG (Liquefied Natural Gas) carrier propulsion, at four different loads. Energy analysis is performed by using four different methods. The presented analysis allows distinguishing advantages and disadvantages of all observed energy analysis methods and its comparison to exergy analysis of the same steam turbine. Each analysis is based on the measurement results obtained in main turbine exploitation conditions. Main turbine is composed of two cylinders – High Pressure Cylinder (HPC) and Low Pressure Cylinder (LPC). At low turbine loads, the dominant power producer is HPC, while at middle and high loads the dominant power producer is LPC. Energy analysis Method 1 which is based on the same principles as exergy analysis, should be avoided if the majority of turbine losses are not known. Other observed energy analysis methods can be applied in the analysis of any steam turbine, with a note that increase in ideal (isentropic) steam expansion process divisions will result with an increase in energy losses and with a decrease in energy efficiency. Energy analysis Method 2 which consist of only one ideal (isentropic) steam expansion process, for the whole turbine and at all observed loads, results with the lowest energy losses (in the range between 639.98 kW and 6434.17 kW) as well as with the highest energy efficiency (in a range between 53.70% and 79.40%) in comparison to other applicable energy analysis methods. For the observed loads, whole main turbine exergy destruction is in range from 608.64 kW to 5922.86 kW, while the exergy efficiency range of the whole turbine is between 54.94% and 80.73%. Exergy analysis and all three applicable energy analysis methods show that increase in the main turbine load results with simultaneous increase in turbine losses and efficiencies (both energy and exergy).

Ključne riječi
main marine steam turbine; exergy analysis; various energy analysis methods; different steam turbine loads

Hrčak ID: 249259

URI
https://hrcak.srce.hr/249259

Posjeta: 83 *