denver water's plan for a sustainable reuse system
TRANSCRIPT
![Page 1: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/1.jpg)
Use of High Efficiency Propeller Designs to Optimise Propulsive
Efficiency
Adrian Miles
Managing Director Stone Marine Propulsion
Presented at ENERGY EFFICIENCY PRACTICE & PROSPECTS Athens 27/11/2012
![Page 2: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/2.jpg)
STONE MARINE GROUP
Stone Marine Propulsion
Supply : Large Propellers & Sterngear
Stone Marine Services
Servicing : Propellers & Sterngear
Stone Marine Shipcare
Servicing : Propellers
Stone Marine Singapore
Supply : Small Propellers & Sterngear
Stone Marine Namibia
Subsidiary of Stone Marine Services
Stone Marine Bruntons
Supply : Small Propellers & Sterngear
![Page 3: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/3.jpg)
1. The Stone Marine 'NPT' high efficiency propeller 2. Propeller Optimisation Basics. Case study 1: 'Seahorse' 35k Bulk carrier Optimise Propeller Revs 3. Slow steaming:
Case study 2: Container Vessel, De-rate Engine and fit optimised Propeller 5. Conclusions
Summary
![Page 4: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/4.jpg)
NPT Propeller
- NPT = 'New Profile Technology'
- 2-4% Efficiency Gain
-Smaller Optimum Diameter
-Smaller Blade Surface
-Significant Weight & Inertia Reduction
-Lower Pressure Pulses
-Same Cost as Conventional Propeller
![Page 5: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/5.jpg)
NPT Propeller – How it Works
-Reduced Pressure Peak on Section -Blade Surface Area Reduced - Viscous Drag Reduced = Improved Efficiency
![Page 6: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/6.jpg)
Camera
Pressure
Gauge
0
1
2
3
4
5
4 8 12 16 20
Am
plit
ude[K
pa]
Order.
0.8×σdesign
MPNo.90(NBS)
MPNo.91
Measurements by HSVA(Hamburg)
Pressure Impulses Trials Powers
98.0%
99.0%
100.0%
101.0%
102.0%
103.0%
104.0%
1
Relative
Propulsive
Efficiency
Propeller
Conventional PAI NBS
![Page 7: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/7.jpg)
Slow turning, Large Diameter = Highest Efficiency
Propeller Optimisation Basics
![Page 8: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/8.jpg)
Maximum Continuous Rating (MCR), Power and RPM selected from 'layout' box
Engine Layout Selection
![Page 9: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/9.jpg)
Propeller Diameter
Maximise Diameter Select RPM to Suit
![Page 10: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/10.jpg)
Case Study 1: Seahorse 35 Bulk Carrier (Source Grontmij & Schmidt Maritime)
![Page 11: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/11.jpg)
Case Study 1: Seahorse 35 Bulk Carrier
![Page 12: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/12.jpg)
Case Study 1: Seahorse 35 Bulk Carrier
Version 3
Comparison between optimum diameter conventional and NPT Propellers
![Page 13: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/13.jpg)
Case Study 1: Seahorse 35 Bulk Carrier Version 3 – Model Test
![Page 14: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/14.jpg)
Summary of Fuel Oil Savings
Oct. 2012 14 Schmidt Maritime
SEAHORSE 35 Version 1 2 3 4 5
1. Main Engine Maker [-] MAN B&W MAN B&W MAN B&W MAN B&W MAN B&W
2. Main Egine Type [-] 5S50 5S50 5S50 5S50 5S50
3. Main Engine Mark [-] MC-C7.1 TI ME-B8.1 TII ME-B9.2 TII ME-B9.2 TII ME-B9.2 TII
4. Main Engine Tuning [-] 127rpm 110rpm 99rpm 99rpm Part Load
5. Propeller [-] 5,54 m NPT 5,80 m Wärts. 5,90 m NPT 5,90 m NPT 5,90 m NPT
6. Becker MEWIS Duct® [-] No No No Yes Yes
7. Design Speed 1) [knots] 14,0 14,0 14,0 14,0 13,0
8. SMCR2) [kW] 7.500 6.900 6.350 6.050 4.700
9. NCR3) [kW] 6.082 5.913 5.670 5.440 4.230
10. NCR verified by: [-] Sea trial Sea trial Tanktest Tanktest Tanktest
11. % of SMCR [%] 81% 86% 89% 90% 90%
12. NCR Index [-] 100% 97% 93% 89% 70%
13. SFOCNCR [g/kWh] 166,8 167,2 161,0 159,9 158,6
14. SFOC Index [%] 100% 100% 97% 96% 95%
15. M/E FOCMDO4) [mt/day] 24,3 23,7 21,9 20,9 16,1
16. FOC Index [%] 100% 97% 90% 86% 66%
1) Design speed at scantling draft of 10,1 m
2) NCR : Main engine power to reach design speed at scantling draft including 15% sea margin and 1% shaft loss
3) M/E fuel oil consumption at NCR based on MDO (LCV 42,700 kJ/kg). M/E makers SFOC tolerance of 5% is not incl.
![Page 15: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/15.jpg)
Summary of EEDI
Oct. 2012 15 Schmidt Maritime
SEAHORSE 35 Version 1 2 3 4 5
17. EEDI1) [g/DWTxnm] 6,53 6,23 5,60 5,32 4,50
18. EEDI Index [%] 100% 95% 86% 81% 69%
19. EEDI Base Line [g/DWTxnm] 6,54 6,54 6,54 6,54 6,54
20. EEDI blw. Base Line [%] 0% 5% 14% 19% 31%
1) Main engine makers SFOC tolerance of 5% is included.
4.0
4.5
5.0
5.5
6.0
6.5
7.0
30,000 32,500 35,000 37,500 40,000
EED
I [g-
CO
2/D
WTx
nm
]
Capacity [DWT]
IMO Energy Efficiency Design Index (EEDI) - BULK CARRIERS (EEDI Base Line = 961,79 x Capacity-0,477)
Phase 0 (-0%) from 1/1 2013
Phase 1 (-10%) from 1/1 2015
Phase 2 (-20%) from 1/1 2020
Phase 3 (-30%) from 1/1 2025
Version 1
Version 2
Version 3
Version 4
Version 5
![Page 16: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/16.jpg)
Case Study 2: De-rating Large Container Vessel
80 85 90 95 100 105
15000
20000
25000
30000
35000
40000
45000
50000
55000
60000
65000
70000
75000
Propeller Speed (rpm) v Engine Power (kW)
12 Cylinders 72240
kW
6 Cylinders
33750kW
Existing 6 Blade
Propeller
3 Blades 97 RPM
RPM
Pb
(kW
)
12 to 6 cylinders 26 to 18 kts (max) 6 to 3 blades +6.5% Propeller +6% SFOC saved Total +12% saving 2.6 years payback on $1 700 000
![Page 17: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/17.jpg)
4000
9000
14000
19000
24000
29000
10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0
Pb
(kW
)
Vs (knots)
Containership De-rating 3 and 4 blade options
Existing Propeller 6 Blades
3 Blades NPT
4 Blade NPT
![Page 18: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/18.jpg)
Case Study 3: De-rating Large Container Vessel
![Page 19: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/19.jpg)
Over 75 NPT Propellers on order or supplied
Over 100 of predecessor 'NBS' types in Japan
Largest NPT to date 10.4m, 67t mass
NPT Propellers Supplied
![Page 20: DENVER WATER'S PLAN FOR A SUSTAINABLE REUSE SYSTEM](https://reader031.vdocuments.net/reader031/viewer/2022021916/620fb187053b1a5b2c5d9da3/html5/thumbnails/20.jpg)
Conclusions Large diameter, slow turning best for efficiency Newbuilds should use this principle to set MCR Retrofits can use this principle to de-rate engine NPT Propeller smaller diameter = lower rpm = higher efficiency