Naslov
Comparison of COGES and diesel-electric ship propulsion systems

Autori
Mrzljak, Vedran ; Mrakovčić, Tomislav

Izvornik
Pomorski zbornik (0554-6397) 1 (2016); 131-148

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

Ključne riječi
COGES ; diesel-electric propulsion ; emission of pollutants

Sažetak
Diesel-electric ship propulsion is a frequent shipowners choice nowadays, especially on passenger ships. Despite many diesel engines advantages, their primary disadvantage is emission of pollutants. As environmental standards become more stringent, the question of optimal alternative to diesel-electric propulsion arises. COGES (COmbined Gas turbine Electric and Steam) propulsion system is one of the proposals for alternative propulsion system, primarily due to significant reduction of pollutant emissions. On the other hand, gas turbines have higher specific fuel consumption in comparison with diesel engines what represents their noticeable disadvantage. However, some analyzes suggested that COGES propulsion system could be still cost-effective in comparison to diesel-electric propulsion, particularly on passenger ships where higher initial investment can be compensated by increasing the number of passenger cabins. This paper shows a comparison of abovementioned propulsion systems, which can be useful for the optimal ship propulsion system selection.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA