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DNV has quantified the positive aspects that house owners of LNG carriers might anticipate to realize utilizing the brand new Twin Gasoline, Electrical+ (DFE+) answer developed by ABB and MAN Power Options. Comprising MAN’s four-stroke 49/60DF twin gas engine and ABB’s Dynamic AC energy distribution and management system, the answer has been developed to beat effectivity challenges which are particular to the vessel sort.
DNV’s Maritime Advisory evaluation concludes that the DFE+ idea is “a aggressive and extra vitality environment friendly different to even probably the most environment friendly standard dual-fuel LNG provider propulsion designs.” Smaller equipment house necessities might ship “a conservative estimate” of 5% larger cargo capability. Mixed with different steps to optimise efficiency, the DFE+ idea might contribute to general vitality financial savings of 6 – 7.5% contemplating the ship’s elevated transport work, DNV says.
From 1 January 2023 the Worldwide Maritime Group (IMO) has required shipowners to report vessels into an Power Effectivity Design Index (EEDI), an En-ergy Effectivity Present Ships Index (EEXI), and an operational Carbon Depth Index (CII). These instruments benchmark ships in order that house owners know what they have to do to satisfy IMO targets for decreasing greenhouse fuel emissions.
As the most recent addition to MAN’s four-stroke portfolio, the MAN 49/60DF engine is optimised for LNG. Additionally it is extremely appropriate with ABB’s Dynamic AC system, which mixes the deserves of standard AC with these of variable frequency to permit the engines to function on optimum speeds – considerably enhancing complete gas consumption.
“Homeowners of LNG carriers face particular challenges in complying with the laws, given their reliance on propulsion options with restricted potential for effectivity positive aspects,” mentioned Prof. George Dimopoulos, Scientific Advisor, DNV. “The ABB – MAN propulsion idea goals to supply a extremely efficient method for LNG carriers to satisfy progressively tightening emissions laws whereas additionally decreasing gas prices.”
“With the present international orderbook for LNG carriers together with greater than 200 vessels, and emission laws persevering with to tighten, house owners want new applied sciences to satisfy the necessities that apply to this particular class of ships,” added Rune Lysebo, Strategic Market Improvement, ABB Marine & Ports. “DNV’s testimony on the positive aspects accessible to LNG carriers with the brand new answer developed by ABB and MAN Power Options proves the time is true to discover the next-generation applied sciences for this vessel sort.”
DFE+ could possibly be put in with an vitality storage answer to function as a spinning reserve or come coupled with ABB’s Azipod® electrical propulsion. ABB and MAN will even discover integrating gas cells because the know-how matures.
Learn the article on-line at: https://www.lngindustry.com/lng-shipping/07022024/dnv-study-validates-energy-efficiency-gains-for-lng-carriers-enabled-by-abb-and-man-dfe-propulsion-solution/
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