Featured Research

from universities, journals, and other organizations

Combination of three propulsion technologies brings maritime fuel savings

Date:
November 4, 2013
Source:
Technical Research Centre of Finland (VTT)
Summary:
According to new research, lower fuel consumption and emissions are expected for an innovative propulsion system to be used as a promising alternative to conventional propellers.

According to the TRIPOD research project coordinated by VTT Technical Research Centre of Finland lower fuel consumption and emissions are expected for an innovative propulsion system to be used as a promising alternative to conventional propellers. Annual fuel savings for a single cargo ship above half million euros are foreseen. The research examined the benefits derived from combining the RudderPod propulsion units developed by ABB-Finland with the contracted loaded tip propellers (CLT) developed by the Spanish company Sistemar and with contra-rotating propellers (CRP).

Based on the TRIPOD project results, the fuel consumption of a retrofitted propulsion system is 5% lower, and that of a newly built system 10% lower, than conventional solutions. Equivalent annual fuel savings for a single large container ship would be 0.5 to one million euros.

The goal of the TRIPOD project was to improve propeller efficiency by integrating three separate propulsion technologies -- the RudderPod units, CLT propellers and the CRP propulsion-, already known for their high efficiency over conventional propulsion into a single system.

The electric RudderPod unit can be positioned more freely at the ship stern, independently of the location of the main engine. In TRIPOD, the units are located behind the main propeller working as the aft-propeller of a CRP unit. The rotational speed of the Rudderpod propeller can also be adjusted, improving the propeller's efficiency and attenuating propeller-induced noise and vibration.

The CLT propeller blades can be more loaded at the tip than those of conventional propellers, which results in an improvement of the propulsion efficiency.

In the CRP system, the contra-rotating aft propeller recovers rotational energy losses from the fore (main) propeller, thus improves overall efficiency.

Study of the viability of the new propulsion solutions is made also by performing economical cost benefit analysis for the operation of the reference ships. It was concluded that if the investment level can be brought down, obviously in close cooperation with the relevant specialist suppliers, ship-owners will be interested to explore further installation opportunities especially in new-building projects of large container ships.

The three-year programme TRIPOD -- "Triple Energy Saving by use of CRP, CLT and Podded Propulsion" was implemented within the EU's Seventh Framework Programme.

Partners in the programme were VTT Technical Research Centre of Finland (Finland), ABB (Finland), Sistemar (Spain), Cehipar (Spain), Cintranaval-Defcar (Spain) and A. P. Mφller Maersk (Denmark).


Story Source:

The above story is based on materials provided by Technical Research Centre of Finland (VTT). Note: Materials may be edited for content and length.


Cite This Page:

Technical Research Centre of Finland (VTT). "Combination of three propulsion technologies brings maritime fuel savings." ScienceDaily. ScienceDaily, 4 November 2013. <www.sciencedaily.com/releases/2013/11/131104035247.htm>.
Technical Research Centre of Finland (VTT). (2013, November 4). Combination of three propulsion technologies brings maritime fuel savings. ScienceDaily. Retrieved September 18, 2014 from www.sciencedaily.com/releases/2013/11/131104035247.htm
Technical Research Centre of Finland (VTT). "Combination of three propulsion technologies brings maritime fuel savings." ScienceDaily. www.sciencedaily.com/releases/2013/11/131104035247.htm (accessed September 18, 2014).

Share This



More Matter & Energy News

Thursday, September 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Stocks Hit All-Time High as Fed Holds Steady

Stocks Hit All-Time High as Fed Holds Steady

AP (Sep. 17, 2014) — The Federal Reserve signaled Wednesday that it plans to keep a key interest rate at a record low because a broad range of U.S. economic measures remain subpar. Stocks hit an all-time high on the news. (Sept. 17) Video provided by AP
Powered by NewsLook.com
Space Race Pits Bezos Vs Musk

Space Race Pits Bezos Vs Musk

Reuters - Business Video Online (Sep. 16, 2014) — Amazon CEO Jeff Bezos' startup will team up with Boeing and Lockheed to develop rocket engines as Elon Musk races to have his rockets certified. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
MIT's Robot Cheetah Unleashed — Can Now Run, Jump Freely

MIT's Robot Cheetah Unleashed — Can Now Run, Jump Freely

Newsy (Sep. 16, 2014) — MIT developed a robot modeled after a cheetah. It can run up to speeds of 10 mph, though researchers estimate it will eventually reach 30 mph. Video provided by Newsy
Powered by NewsLook.com
Manufacturer Prints 3-D Car In Record Time

Manufacturer Prints 3-D Car In Record Time

Newsy (Sep. 15, 2014) — Automobile manufacturer Local Motors created a drivable electric car using a 3-D printer. Printing the body only took 44 hours. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins