COMPUTER MODEL TIL BEREGNING AF EEDI OG RØGGASEMISSIONER FOR FORSKELLIGE SKIBSTYPER

Transcription

1 COMPUTER MODEL TIL BEREGNING AF EEDI OG RØGGASEMISSIONER FOR FORSKELLIGE SKIBSTYPER HANS OTTO HOLMEGAARD KRISTENSEN CHEFKONSULENT, DANMARKS REDERIFORENING

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3 Generic ship model Skibsteknisk Selskab 25. februar 2013 Input Ship type Capacity Speed Engine technology Output Ship main particulars Required propulsion power E nergy demand EEDI E xhaust gas emissions Ship data Units Deafult values First modification Second modification Maximum deadweight tons Elongation in percent % Length between pp m Length in waterline incl. bulbous bow m Breadth mld. m Depth m Design draught m Maximum draught m Design deadweight/maximum deadweight % Maximum draugth - design draught m Design deadweight tons Lightweight coefficient (excl. CSR allowance) t/m Lightweight (default incl. CSR allowance) tons Structural enhancement (change of lightweight) pct Displacement at design draught tons Displacement at maximum draught tons Design Dw/Design displacement % Scantling Dw/Maximum displacement % Block coefficient at design draught Block coefficient at maximum draught Lpp/Displ. 1/3 at design draught Lpp/Displ. 1/3 at maximum draught Midship section coefficient Prismatic coefficient at design draught Prismatic coefficient at maximum draught Waterplane area coefficient at maximum draught Wetted surface at design draught m Wetted surface at maximum draught m Service speed at design draught knots Froude number at service speed Max. draught trial speed at 75 % MCR (EEDI ref. speed) knots Froude number at EEDI reference speed Service allowance on resistance pct Transmission efficiency pct Main engine power (MCR) kw Auxiliary power at sea at design draught kw Propeller type (1 = conventional - 2 = ducted) (-) Propeller diameter m Propeller loading (MCR) kw/m Speed dependency exponent n (Power = constant V n ) IMO Energy Efficiency Design Index (CO 2 emissions) g/dwt/nm IMO Energy Efficiency Design Index (MEPC 62) g/dwt/nm

4 ENGINE TYPE & TECHNOLOGY Main engine type (slow speed = 1, medium speed = 2) (-) Main engine service rating (for non derated engine only) pct. MCR Fuel type (HFO = 1, MD/GO = 2, LNG = 3 (only 4 stroke), Dual fuel = 4) Sulphur content in heavy fuel (HFO) pct Sulphur content in diesel oil or gas oil (DO/GO) pct Derated 2 stroke main engine? (NO = 0, YES = 1) Fuel optimised main engine? (NO = 0, YES = 1) TIER 1, 2 or 3 engine? (1-3) Specify NOx reduction technology: EGR (Exhaust Gas Recirculation) =1, SCR (Selective Catalyic Reduction) = 2 or other technology = Use of scrubbers if oil is used (NO = 0, YES=1)

5 Engine and emission reduction technologies Main engine Auxiliary engines Main engine Auxiliary engines Main engine Auxiliary engines Main engine type (2-stroke = 1, 4-stroke = 2) Derated main engine - only for 2 stroke engines (NO = 0, YES = 1) Fuel for main engine (HFO = 1, MDO/GO = 2, LNG = 3 (only for 4 stroke), Dual fuel = 4) Fuel optimised main engine? (0 = NO, 1 = YES) TIER 1, 2 or 3 engine (If individual NOx reduction technology is selected then press 0) Specify NOx reduction technology: EGR (Exhaust Gas Recirculation) =1, SCR (Selective Catalyic Reduction) = 2 or other technology = Sulphur content in % in heavy fuel oil (HFO) Sulphur content in % in diesel/gas oil (DO/GO) Use of scrubbers (NO = 0, YES=1) Emission factors Fuel consumption (kg/kw/hour) CO2 emission (g/kw/hour) NOx emission (g/kw/hour) CO emission (g/kw(hour) HC emission (g/kw/hour) Particulates (g/kw/hour) S content in oil (pct.) SO2 emission (g/kw/hour) CO2 emission (g/kg fuel) NOx emission (g/kg fuel) CO emission (g/kg fuel) HC emission (g/kg fuel) Particulates (g/kg fuel) SO2 emission (g/kg fuel) Calorific value (MJ/kg fuel) Calorific value (MJ/kg oil) Calorific value (MJ/kg LNG) SFOC change due to engine type (pct.) derated versus normal engine Extra energy demand due to scrubber (pct.) Extra energy demand due to NOx reducing EGR technology (pct.) Total change of SFOC (pct.) NOx reduction compared to Tier 1 (pct.) Particulate reduction (pct.) SO2 reduction (pct.) DANMARKS REDERIFORENING - Dual fuel 28/02/2013 Diesel oil (pilot fuel) in pct. 6 Gas in pct. 94

6 Emissions and energy demand Condition data Capacity utilization (100 % ~ design condition) % Deadweight (cargo + consumerables + ballast water etc.) tons Payload (cargo) tons Draught m Ship speed knots Speed dependency exponent N (Power = constant V N ) Energy demand Energy demand per hour GJ/hour Energy demand per nautiacal mile GJ/nm Energy demand per ton deadweight per nautiacal mile MJ/dwt/nm Energy demand per ton payload per km MJ/t/km Oil consumption Oil consumption per hour t/hour Oil consumption demand per nautiacal mile kg/nm Oil consumption per ton deadweight per nautiacal mile g/dwt/nm CO 2 emissions CO 2 emissions per hour t/hour CO 2 emissions per nautical mile kg/nm CO 2 emissions per ton deadweight per nautical mile g/dwt/nm NOx emissions NOx emissions per hour kg/hour NOx emissions per nautical mile kg/nm NOx emissions per ton deadweight per nautical mile g/dwt/nm SOx emissions SOx emissions per hour kg/hour SOx emissions per nautical mile kg/nm SOx emissions per ton deadweight per nautical mile g/dwt/nm CO emissions CO emissions per hour kg/hour CO emissions per nautical mile kg/nm CO emissions per ton deadweight per nautical mile g/dwt/nm Particulate emissions Particulate emissions per hour kg/hour Particalate emissions per nautical mile kg/nm Particulate emissions per ton deadweight per nautical mile g/dwt/nm

7 The ship design and emission model can be downloaded from:

8 M aritime research and technology development an d f utur e requirements Thank you Questions? DANMARKS REDERIFORENING - 28/02/2013