Crest of the Royal National Institution of Naval Architects - Click to return to the homepage


MarintechChina Until June 2022

Hybrid Expo

SMM May_June 2022


International Registries May 2022

Air Products May 2022

IJME 532

Paper Title: Energy Efficiency Based Operation of Compressed Air System on Ships to Reduce Fuel Consumption and CO2 Emission 



C Dere, C Deniz, Istanbul Technical University Maritime Faculty, Turkey


Energy efficiency subject has been gaining importance in maritime sector. The compressed air is a valuable energy source in operational manner, by the reason of intrinsic lack of efficiency in pressurization process. Operational pressure and leakage rate are the major variables which affect operational efficiency of the system. This study aims to reveal potential energy saving for the compressed air system. To this end, several pressure ranges, 29-30 bars to 14-18 bars, and different leakage rates 2.4% to 45% are evaluated. After the data was obtained from ships, thermodynamic calculations had been carried out. Optimization of pressure saves 47.3% in daily power requirement, 58,2% in compressed air unit cost, 18.4 and 57.4 tons of reduction in fuel consumption and CO2 emissions in a year respectively. High leakage rates can cause 2.7 times more power and fuel consumption. Finally, operating load, as an important indicator of compressor, makes imperfections identifiable.



Transactions RINA, Vol 161, Part A2, International Journal Maritime Engineering, Apr - Jun 2019 

DOI Number

DOI No: 10.3940/rina.ijme.2019.a2.532

Search and Order IJME papers

All International Journal of Maritime Engineering (IJME) papers are listed in the RINA Publications Database. You can search the database by author name and paper title. Publications may be ordered and paid for online. Other publications are also listed, some of which may be downloaded free of charge. Follow the link to Search Publications & Order.

RINA membership

Cyber Security On Demand Button

Teinbridge Propeller

Euronaval Apr - Oct 2022

Uni Stratchclyde June 2021

Metstrade May 2022