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Low emission bulk carrier

 

In the following, the main conclusions from the two concept studies are given. The emission reductions achieved are compared with the overall goal of Green Ship of the Future and the extra cost price for the implementation of the green technologies are estimated. 
 

Concept study 1:

SEAHORSE 35 Bulk carrier, optimised with following technologies:

  • Water in fuel system (WIF)

  • Exhaust gas recirculation system (EGR)

  • Waste Heat Recovery system (WHR)

  • Exhaust Gas Scrubbers

  • Ducted/direct air intake for main engine

  • Optimised coolers and cooling pumps

  • Auxiliary engine operation on marine diesel oil (MDO)

  • Speed nozzle/optimized propeller

  • Twisted spade rudder with Costa Bulb

  • Installation of Ballast Water Treatment System (BWT)


Goal


Result

  • 30 % reduction of CO2 emissions

  • 90 % reduction of NOX emissions

  • 90 % reduction of SOX emissions

  • Achieved 7,2 %

  • Achieved 79,1 %

  • Achieved 98,6 %

Extra costs due to the above mentioned technologies 3,5 million EURO to approximately 20 million EURO (approximately 20% increase compared to a ‘standard ship’ without ‘green technologies’)
 
 

Conclusion in short

  • With respect to NOX and SOX we have reached our goals

  • Reducing NOx and SOX will in some case cost increased CO2 emission

  • With respect to CO2 the study shows that we still need to work with technical solutions and operation to meet the goal of a 30 % reduction

  • Further reduction in CO2 must be obtained through continued efforts to reduce vessel resistance, optimised operation (slow steaming, weather routing etc), more effective propulsion systems, more fuel efficient engines, alternative fuel (LNG, Biofuel etc) and addition of alternative green means of propulsion (fuel cells, wind, solar etc)

  • Further reductions in CO2 will also reduce NOX and SOX emissions

  • Challenges with retrofitting

 

Download the full version of the study

 


 

 

 
Produced by Adapt A/S