Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 1267083

Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines


Poljak, Igor; Mrzljak, Vedran
Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines // Naše more : znanstveni časopis za more i pomorstvo, 70 (2023), 2; 1, 15 doi:10.17818/NM/2023/2.2 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1267083 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines

Autori
Poljak, Igor ; Mrzljak, Vedran

Izvornik
Naše more : znanstveni časopis za more i pomorstvo (0469-6255) 70 (2023), 2; 1, 15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Marine propulsion ; Steam turbines ; Energy analysis ; Exergy analysis ; Ambient temperature variation

Sažetak
This paper presents thermodynamic (energy and exergy) analysis and comparison of two different marine propulsion steam turbines based on their operating parameters from exploitation. The first turbine did not possess steam reheating and had only two cylinders (high-pressure and low-pressure cylinders), while the second turbine possesses steam reheating and has one additional cylinder (intermediate-pressure cylinder). In the literature at the moment, there cannot be found a direct and exact comparison of these two marine steam turbines and their cylinders based on real exploitation conditions. Along with energy and exergy analyses, the research it is investigated the sensitivity of exergy parameters to the ambient temperature change for both turbines and each cylinder. It is also presented the influence of the steam reheating process on the energy and exergy efficiency of the entire power plant. For both observed turbines and their cylinders it is valid that relative losses and efficiencies (both energy and exergy) are reverse proportional. The operation of an intermediate pressure cylinder from a steam turbine with reheating is the closest to optimal. Due to the different origins of losses considered in energy and exergy analyses, each analysis detects different turbine cylinders as the most problematic ones. The steam reheating process decreases losses and increases efficiencies (both energy of each turbine cylinder and the whole turbine. The whole turbine with reheating has an energy efficiency equal to 81.46% and an exergy efficiency equal to 86.48%, while the whole turbine without reheating has energy and exergy efficiencies equal to 76.47% and 80.94%, respectively. Exergy parameters of a steam turbine without reheating as well as its cylinders are much more influenced by the ambient temperature change in comparison to the steam turbine with reheating and its cylinders. The steam reheating process will increase the efficiency of the whole power plant in real exploitation conditions between 10% and 12%.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Tehnologija prometa i transport



POVEZANOST RADA


Projekti:
IP-2018-01-3739 - Sustav potpore odlučivanju za zeleniju i sigurniju plovidbu brodova (DESSERT) (Prpić-Oršić, Jasna, HRZZ - 2018-01) ( CroRIS)
NadSve-Sveučilište u Rijeci-UNIRI_TEHNIC‐18‐18‐1146 - Nesigurnosti procjene brzine broda u pri realnim vremenskim uvjetima (Prpić-Oršić, Jasna, NadSve ) ( CroRIS)
NadSve-Sveučilište u Rijeci-uniri-tehnic-18-14 - Optimizacija dizalica topline i rashladnih sustava koji koriste radne tvari niskog utjecaja na globalno zatopljenje korištenjem numeričkih simulacija (Pavković, Branimir, NadSve - NATJEČAJ „UNIRI PROJEKTI“ Natječaj za dodjelu sredstava potpore znanstvenim istraživanjima na Sveučilištu u Rijeci za 2018. godinu - projekti iskusnih znanstvenika i umjetnika od 03. 09. 2018.) ( CroRIS)

Ustanove:
Tehnički fakultet, Rijeka,
Sveučilište u Zadru

Profili:

Avatar Url Igor Poljak (autor)

Avatar Url Vedran Mrzljak (autor)

Citiraj ovu publikaciju:

Poljak, Igor; Mrzljak, Vedran
Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines // Naše more : znanstveni časopis za more i pomorstvo, 70 (2023), 2; 1, 15 doi:10.17818/NM/2023/2.2 (međunarodna recenzija, članak, znanstveni)
Poljak, I. & Mrzljak, V. (2023) Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines. Naše more : znanstveni časopis za more i pomorstvo, 70 (2), 1, 15 doi:10.17818/NM/2023/2.2.
@article{article, author = {Poljak, Igor and Mrzljak, Vedran}, year = {2023}, pages = {15}, DOI = {10.17818/NM/2023/2.2}, chapter = {1}, keywords = {Marine propulsion, Steam turbines, Energy analysis, Exergy analysis, Ambient temperature variation}, journal = {Na\v{s}e more : znanstveni \v{c}asopis za more i pomorstvo}, doi = {10.17818/NM/2023/2.2}, volume = {70}, number = {2}, issn = {0469-6255}, title = {Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines}, keyword = {Marine propulsion, Steam turbines, Energy analysis, Exergy analysis, Ambient temperature variation}, chapternumber = {1} }
@article{article, author = {Poljak, Igor and Mrzljak, Vedran}, year = {2023}, pages = {15}, DOI = {10.17818/NM/2023/2.2}, chapter = {1}, keywords = {Marine propulsion, Steam turbines, Energy analysis, Exergy analysis, Ambient temperature variation}, journal = {Na\v{s}e more : znanstveni \v{c}asopis za more i pomorstvo}, doi = {10.17818/NM/2023/2.2}, volume = {70}, number = {2}, issn = {0469-6255}, title = {Thermodynamic Analysis and Comparison of Two Marine Steam Propulsion Turbines}, keyword = {Marine propulsion, Steam turbines, Energy analysis, Exergy analysis, Ambient temperature variation}, chapternumber = {1} }

Časopis indeksira:


  • Web of Science Core Collection (WoSCC)
    • Emerging Sources Citation Index (ESCI)
  • Scopus


Citati:





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font