hybrid propulsion friday 18 february 2011 andrew duncan jim anderson
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Hybrid PropulsionFriday 18 February 2011
Andrew DuncanJim Anderson
Scottish GovernmentClimate Change Delivery Plan
Measures in the transport sector which will contribute to the delivery of the 34% Scottish target in 2020 include:
Improved energy efficiency of new ships
Public sector investment in new vessels for subsidised lifeline ferry services
Supporting the development of emissions reduction targets in shipping operations
By 2020, a 5-10% emissions reduction through technology measures and another 10% reduction through demand and fleet management
CLIMATE CHANGE DELIVERY PLANChapter 5: Transport Sector
Hybrid Passenger/Car Ferry
1: 8 Slipway
Hybrid Passenger/Car Ferry
Hybrid Passenger/Car Ferry
Main Dimensions
Length Overall 43.5m
Length between PP 39.6m
Breadth (moulded) 12.2m
Draught 1.6m
Capacities
Deadweight 140 tonnes
Cars 23
HGVs 2
Passengers 150
Crew 3/4
Speed 9 kts
Hybrid Passenger/Car Ferry
Model Tests
Trial Conditions, BF2Draught (m) PD (kW) N (rpm)1.60m 258.7 87.4
Service Speed 9.0 ktsRequired power and Propeller Revolutions at Design Draught:
Model Tests
Propulsion
Diesel MechanicalDiesel Electric
Hybrid
PROPELLER COMPT ENGINE ROOM PROPELLER COMPT
650 5 10 15 3020 25 35 40 45 50 55 60 70 75 80 85
PROPELLER UNIT
PROPELLER UNIT
MAIN ENGINE
MAIN ENGINE
GENERATOR GENERATOR
SW
ITC
HB
OA
RD
Diesel Mechanical
1-5%
6-10%
11-15%
16-20%
21-25%
26-30%
31-35%
36-40%
41-45%
46-50%
51-55%
56-60%
61-65%
66-70%
71-75%
76-80%
81-85%
86-90%
91-95%
96-100%
3%
24%
13%
5%
9%12%
10% 11%9%
0%3%
0% 1% 0% 0% 0% 0% 0% 0% 0%
Sconser - Raasay RouteDaily Average Duty Cycle
Percentage of day at Power Range
Percentage of Available Power
Diesel Mechanical
ShoreSupply
M
PROP 1 PROP 2
M
DC Link
Ships Service
Ships Service
Ship's
ServiceShoreSupply
G1 G2 G3 G4
Emer Swbd
M2MM1
MProp 2MProp 1
395 kW0 – 615 RPM
395 kW0 – 615 RPM
375 kW 375 kW
DC Link
4 x 253kVA Generators 400V, 50Hz, 3ph
Cos Ø = 0.9
Diesel Electric
Diesel Mechanical 2 x 450kW EnginesMax Propulsion
Power 9 knots MAN PORT OVERNIGHT
DAILY HOURS 22.50% 3.46% 18.75% 55.29%
DAILY HOURS 5.4 h 0.83 h 4.5 h 13.27 h
SHAFT POWER 750 kW 258.7 kW 200 kW 60 kW
MAIN ENGINE POWER (MCR) 450 kW 450 kW 450 kW 450 kW
NUMBER CONNECTED 2 2 2 2
TOTAL INSTALLED ME POWER (MCR) 900 kW 900 kW 900 kW 900 kW
TOTAL ME POWER DEMAND 840kW 333 kW 224 kW 67 kW
MAIN ENGINE LOAD 86% 37 % 25 % 7 % Total
FUEL CONSUMPTION (litres/day)
509 litres/day 55 litres/day 128 litres/day
Estimated Total Fuel Consumption 692 litres/day
Fuel Calculations
Diesel Electric 4 x 240kW EnginesMax Propulsion
Power 9 knots MAN PORT OVERNIGHT
DAILY HOURS 22.50% 3.46% 18.75% 55.29%
DAILY HOURS 5.4 h 0.83 h 4.5 h 13.27 h
SHAFT POWER 750 kW 258.7 kW 200 kW 60 kW
MAIN ENGINE POWER (MCR) 240 kW 240 kW 240 kW 450 kW
NUMBER CONNECTED 4 2 2 1
TOTAL INSTALLED ME POWER (MCR) 960 kW 480 kW 480 kW 240 kW
TOTAL ME POWER DEMAND 900 kW 397 kW 277 kW 105 kW
MAIN ENGINE LOAD 92% 83 % 58 % 44 % Total
FUEL CONSUMPTION (litres/day)
527 litres/day 57 litres/day 119 litres/day 703 litres/day
Estimated Total Daily Fuel Consumption 703 litres/day
Fuel Calculations
Diesel Mechanical Diesel ElectricDaily Fuel Consumption 692 litres/day 703 litres/day
Engine load at 9knots 37% 83%Engine load during manoeuvring 25% 58%
Engine load at port 7% 44%
DM vs DE
ShoreSupply
M
PROP 1 PROP 2375 kW
M
DC Link
Ships Service
Ships Service
Battery Bank
350kWh
Ship's
ServiceShoreSupply
G1 G2 G3 G4
Emer Swbd
M2MM1
MProp 2MProp 1
395 kW0 – 615 RPM
395 kW0 – 615 RPM
375 kW 375 kW
4 x 253kVA Generators 400V, 50Hz, 3ph
Cos Ø = 0.9
DC LinkBatteryBank
350kWh
Serial Hybrid System
AC
DC
DC
AC
Battery
PropulsionMotor
)
ShoreSupply
Mode 1 - Generator
Mode 2 - Generator + BatteryMode 3 - BatteryMode 4 -
Battery charging
Hotel
Generator
VariableSpeedDrive
Modes of Operation
Greater redundancy
Reduce fuel consumption
Reduced impact of CO2 emissions and other pollutants
Uncertainty of future fuel costs
Insurance against increasing environmental regulation
Noise reduction
Possibility to operate in zero emission mode when vessel is at portLower maintenance
Reasons for Considering Hybrid Propulsion
Batteries
Lead Acid Lithium Ion
Depth of Discharge 50% 80%
Cycle life at 50% Depth of Discharge 1000 8000
>3000 @ 80% DoD
Energy Density 20 Wh/kg 100 Wh/kg
Charge Efficiency 60% 95-99%
Maintenance Maintenance required Maintenance Free
Lead Acid – Lithium Comparison
Aft Engine Room
Fwd Engine Room
G1 G3
G2 G4
Prop 2
M2
Con
vert
er
Mai
n S
witc
hboa
rd
Prop 1
M1
Con
vert
er
Aft Prop Room
Fwd Prop Room
Aft Battery Room
Bat
tery
Ban
k 2 B
atte
ry B
ank
1
Fwd Battery Room
Machinery Arrangement
Mar 2011• PQQ
Distribution
May 2011• PQQ Deadline
June 2011• PQQ
Evaluation
June 2011• Issue ITT
Aug 2011• ITT Deadline
Sep 2011• Complete
Tender Evaluation
Oct 2011• Award
Shipbuilding Contract
Procurement Process
Thank you for your attention