Emerging energy efficiency regulations and ongoing industrial studies are boosting the reduction of ship pollutant emissions. Researches are progressively stimulating innovation in energy efficiency management allowing the adoption of new technologies by shipowners. In order to find new strategies to reach Greenhouse Gas (GHG) goals, the IMO imposed new technical requirements to reduce carbon intensity by means the Energy Efficiency Existing Ship (EEXI) Index. This new technical measure is compulsory for existing ships. These indexes estimate grams of CO2 per transport work (g of CO2 per tonne-mile). For each vessel in operation an Attained EEXI must be calculated and benchmarked for compliance with a Required EEXI. The parameters that have the greatest impact on the determination of the Attained EEXI values will be assessed and compared the Required EEXI. Therefore, case by case, different technical solutions able to reduce the EEXI Exceedance percentage (i.e., the difference between the Attained EEXI and the Required EEXI) are tailored for each vessel with reference to the operating profile/scenario. Furthermore, in this paper a case study referred to a merchant fleet engaged in global operations is presented.
Strategies for ship Decarbonisation: Technical Measure for reducing Energy Efficiency Existing Ship Index
Valentina BORTUZZO;Vittorio BUCCI
2022-01-01
Abstract
Emerging energy efficiency regulations and ongoing industrial studies are boosting the reduction of ship pollutant emissions. Researches are progressively stimulating innovation in energy efficiency management allowing the adoption of new technologies by shipowners. In order to find new strategies to reach Greenhouse Gas (GHG) goals, the IMO imposed new technical requirements to reduce carbon intensity by means the Energy Efficiency Existing Ship (EEXI) Index. This new technical measure is compulsory for existing ships. These indexes estimate grams of CO2 per transport work (g of CO2 per tonne-mile). For each vessel in operation an Attained EEXI must be calculated and benchmarked for compliance with a Required EEXI. The parameters that have the greatest impact on the determination of the Attained EEXI values will be assessed and compared the Required EEXI. Therefore, case by case, different technical solutions able to reduce the EEXI Exceedance percentage (i.e., the difference between the Attained EEXI and the Required EEXI) are tailored for each vessel with reference to the operating profile/scenario. Furthermore, in this paper a case study referred to a merchant fleet engaged in global operations is presented.File | Dimensione | Formato | |
---|---|---|---|
NAV4.pdf
Accesso chiuso
Descrizione: Articolo pubblicato
Tipologia:
Documento in Versione Editoriale
Licenza:
Copyright Editore
Dimensione
372.17 kB
Formato
Adobe PDF
|
372.17 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
paper_086.pdf
accesso aperto
Tipologia:
Bozza finale post-referaggio (post-print)
Licenza:
Digital Rights Management non definito
Dimensione
646.29 kB
Formato
Adobe PDF
|
646.29 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.