COMPUTER MODEL TIL BEREGNING AF EEDI OG RØGGASEMISSIONER FOR FORSKELLIGE SKIBSTYPER HANS OTTO HOLMEGAARD KRISTENSEN CHEFKONSULENT, DANMARKS REDERIFORENING (HOK@SHIPOWNERS.DK)
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 75000 75000 75000 Elongation in percent % 0 0 3 Length between pp m 218.00 218.00 224.54 Length in waterline incl. bulbous bow m 222.36 222.36 229.03 Breadth mld. m 32.23 32.23 32.23 Depth m 19.30 19.30 19.30 Design draught m 12.83 12.83 12.84 Maximum draught m 13.94 13.94 13.94 Design deadweight/maximum deadweight % 90 90 90 Maximum draugth - design draught m 1.12 1.12 1.11 Design deadweight tons 67500 67500 67500 Lightweight coefficient (excl. CSR allowance) t/m 3 0.0790 0.0790 0.0790 Lightweight (default incl. CSR allowance) tons 11247 11247 11584 Structural enhancement (change of lightweight) pct. 0 0 0 Displacement at design draught tons 78747 78747 79084 Displacement at maximum draught tons 86247 86247 86584 Design Dw/Design displacement % 85.7 85.7 85.4 Scantling Dw/Maximum displacement % 87.0 87.0 86.6 Block coefficient at design draught - 0.853 0.853 0.831 Block coefficient at maximum draught - 0.859 0.859 0.837 Lpp/Displ. 1/3 at design draught - 5.13 5.13 5.27 Lpp/Displ. 1/3 at maximum draught - 4.97 4.97 5.12 Midship section coefficient - 0.995 0.995 0.995 Prismatic coefficient at design draught - 0.857 0.857 0.835 Prismatic coefficient at maximum draught - 0.863 0.863 0.841 Waterplane area coefficient at maximum draught - 0.936 0.936 0.918 Wetted surface at design draught m 2 11237 11237 11427 Wetted surface at maximum draught m 2 11806 11806 12005 Service speed at design draught knots 14.6 14.0 14.0 Froude number at service speed - 0.161 0.154 0.152 Max. draught trial speed at 75 % MCR (EEDI ref. speed) knots 14.3 13.7 13.7 Froude number at EEDI reference speed - 0.159 0.151 0.149 Service allowance on resistance pct. 15 15 15 Transmission efficiency pct. 98 98 98 Main engine power (MCR) kw 10456 8774 8105 Auxiliary power at sea at design draught kw 511 439 405 Propeller type (1 = conventional - 2 = ducted) (-) 1 1 1 Propeller diameter m 6.81 6.81 6.81 Propeller loading (MCR) kw/m 2 287 241 223 Speed dependency exponent n (Power = constant V n ) - 4.2 3.9 3.6 IMO Energy Efficiency Design Index (CO 2 emissions) g/dwt/nm 4.36 3.82 3.54 IMO Energy Efficiency Design Index (MEPC 62) g/dwt/nm 4.55 4.55 4.55
ENGINE TYPE & TECHNOLOGY Main engine type (slow speed = 1, medium speed = 2) (-) 1 1 1 Main engine service rating (for non derated engine only) pct. MCR 90 90 90 Fuel type (HFO = 1, MD/GO = 2, LNG = 3 (only 4 stroke), Dual fuel = 4) - 2 2 2 Sulphur content in heavy fuel (HFO) pct. 1.0 1.0 1.0 Sulphur content in diesel oil or gas oil (DO/GO) pct. 1.0 1.0 1.0 Derated 2 stroke main engine? (NO = 0, YES = 1) - 0 0 0 Fuel optimised main engine? (NO = 0, YES = 1) - 0 0 0 TIER 1, 2 or 3 engine? (1-3) - 2 2 2 Specify NOx reduction technology: EGR (Exhaust Gas Recirculation) =1, SCR (Selective Catalyic Reduction) = 2 or other technology = 3-1 1 1 Use of scrubbers if oil is used (NO = 0, YES=1) - 0 0 0
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) 1 2 1 2 1 2 Derated main engine - only for 2 stroke engines (NO = 0, YES = 1) 0-0 - 0 - Fuel for main engine (HFO = 1, MDO/GO = 2, LNG = 3 (only for 4 stroke), Dual fuel = 4) 2 2 2 2 2 2 Fuel optimised main engine? (0 = NO, 1 = YES) 0-0 - 0 - TIER 1, 2 or 3 engine (If individual NOx reduction technology is selected then press 0) 2 2 2 2 2 2 Specify NOx reduction technology: EGR (Exhaust Gas Recirculation) =1, SCR (Selective Catalyic Reduction) = 2 or other technology = 3 1 1 1 1 1 1 Sulphur content in % in heavy fuel oil (HFO) 1-1 - 1 - Sulphur content in % in diesel/gas oil (DO/GO) 1 1 1 1 1 1 Use of scrubbers (NO = 0, YES=1) 0 0 0 0 0 0 Emission factors Fuel consumption (kg/kw/hour) 0.173 0.194 0.173 0.194 0.173 0.194 CO2 emission (g/kw/hour) 556 621 556 621 556 621 NOx emission (g/kw/hour) 13.6 9.6 13.6 9.6 13.6 9.6 CO emission (g/kw(hour) 0.35 0.50 0.35 0.50 0.35 0.50 HC emission (g/kw/hour) 0.50 0.50 0.50 0.50 0.50 0.50 Particulates (g/kw/hour) 0.44 0.44 0.44 0.44 0.44 0.44 S content in oil (pct.) 1.0 1.0 1.0 1.0 1.0 1.0 SO2 emission (g/kw/hour) 3.64 4.07 3.64 4.07 3.64 4.07 CO2 emission (g/kg fuel) 3206 3206 3206 3206 3206 3206 NOx emission (g/kg fuel) 78.4 49.5 78.4 49.5 78.4 49.5 CO emission (g/kg fuel) 2.02 2.58 2.02 2.58 2.02 2.58 HC emission (g/kg fuel) 2.88 2.58 2.88 2.58 2.88 2.58 Particulates (g/kg fuel) 2.6 2.3 2.6 2.3 2.6 2.3 SO2 emission (g/kg fuel) 21.0 21.0 21.0 21.0 21.0 21.0 Calorific value (MJ/kg fuel) 42.7 42.7 42.7 42.7 42.7 42.7 Calorific value (MJ/kg oil) 42.7 42.7 42.7 42.7 42.7 42.7 Calorific value (MJ/kg LNG) 50.0 50.0 50.0 50.0 50.0 50.0 SFOC change due to engine type (pct.) derated versus normal engine 0.0 0 0.0 0 0.0 0 Extra energy demand due to scrubber (pct.) 0.0 0 0.0 0 0.0 0 Extra energy demand due to NOx reducing EGR technology (pct.) 2.0 2 2.0 2 2.0 2 Total change of SFOC (pct.) 2.0 2 2.0 2 2.0 2 NOx reduction compared to Tier 1 (pct.) 20 20 20 20 20 20 Particulate reduction (pct.) 0 0 0 0 0 0 SO2 reduction (pct.) 0 0 0 0 0 0 DANMARKS REDERIFORENING - Dual fuel 28/02/2013 Diesel oil (pilot fuel) in pct. 6 Gas in pct. 94
Emissions and energy demand Condition data Capacity utilization (100 % ~ design condition) % 100 100 100 Deadweight (cargo + consumerables + ballast water etc.) tons 67500 67500 67500 Payload (cargo) tons 64125 64125 64125 Draught m 12.83 12.83 12.84 Ship speed knots 14.6 14.0 14.0 Speed dependency exponent N (Power = constant V N ) 4.1 3.9 3.6 Energy demand Energy demand per hour GJ/hour 74 62 56 Energy demand per nautiacal mile GJ/nm 5.1 4.4 4.0 Energy demand per ton deadweight per nautiacal mile MJ/dwt/nm 0.075 0.066 0.059 Energy demand per ton payload per km MJ/t/km 0.043 0.037 0.034 Oil consumption Oil consumption per hour t/hour 1.73 1.45 1.32 Oil consumption demand per nautiacal mile kg/nm 118 104 94 Oil consumption per ton deadweight per nautiacal mile g/dwt/nm 1.75 1.54 1.39 CO 2 emissions CO 2 emissions per hour t/hour 5.5 4.7 4.2 CO 2 emissions per nautical mile kg/nm 380 333 301 CO 2 emissions per ton deadweight per nautical mile g/dwt/nm 5.6 4.9 4.5 NOx emissions NOx emissions per hour kg/hour 133 112 101 NOx emissions per nautical mile kg/nm 9.1 8.0 7.2 NOx emissions per ton deadweight per nautical mile g/dwt/nm 0.135 0.118 0.107 SOx emissions SOx emissions per hour kg/hour 36 31 28 SOx emissions per nautical mile kg/nm 2.5 2.2 2.0 SOx emissions per ton deadweight per nautical mile g/dwt/nm 0.037 0.032 0.029 CO emissions CO emissions per hour kg/hour 3.55 2.98 2.70 CO emissions per nautical mile kg/nm 0.243 0.213 0.193 CO emissions per ton deadweight per nautical mile g/dwt/nm 0.0036 0.0032 0.0029 Particulate emissions Particulate emissions per hour kg/hour 4.41 3.70 3.35 Particalate emissions per nautical mile kg/nm 0.30 0.26 0.24 Particulate emissions per ton deadweight per nautical mile g/dwt/nm 0.0045 0.0039 0.0035
The ship design and emission model can be downloaded from: http://www.fvm.mek.dtu.dk/centre/fvm/english/software/ship_emissions.aspx.
M aritime research and technology development an d f utur e requirements Thank you Questions? DANMARKS REDERIFORENING - 28/02/2013