Solution for Energy Optimization
 
Advertise Here
Trending Topics:
Sunday, June 14, 2015

Ship Equipment
Ship Maintenance
Unitor
Ship Systems
Bimco
Worldwide Metric
Portvision
Hydroscan
Freeman Marine
Neptune Group

MarineTalk
Home Page
About MarineTalk
Buyer's Guide
World InfoDesk
Discussion Forums
Advisory Board
FAQ
Advertising Information
Submit Company Listing
Edit Company Listing
Site Map
 
MarineTalk Site Search:
Featured Companies

Inspectahire Instrument Co.Ltd
Hire, sale, service of fibre optic endoscopes, borescopes, illumination systems. Inspections with all forms of cctv/camera - underwater,surveillance,pipeline, explosion proof, thermographic Inspecting, surveying, contracting, retrievals
    Scotland

CLIPSO PRODUCTIONS
CLIPSO PRODUCTIONS is the leader in manufacturing PVC-FREE wide width stretch coverings for walls and ceilings. Lightweight, design, acoustic, CLIPSO fabrics are IMO, CE and Oeko-Tex certified to fulfill any of your wishes.
    France

IMCA - The International Marine Contractors Association
IMCA is the international trade association representing offshore, marine and underwater engineering companies.
    United Kingdom

McKENNAS INSULATION CO LTD
A 60 INSULATION/LAGGING MATS/HVAC /HEAT SHIELdS/SPRAY SHIELDS/COMFORT INSULATION/SOUNDPROOFING/EXHUAST INSULATION/MANIFOLD LAGGING/PIPE LAGGING/INSULATION SURVEYS/COLD ROOM CONSTRUCTION www.mckennasinsulation.com
    United Kingdom

Solution for Energy Optimization

      11/12/2008

Solution for Energy Optimization

The energy saving capacity of Energopac is based on optimizing the interaction between the vessel's propeller and rudder. The leading edge of the rudder is twisted and subsequently more aligned with the propeller's slipstream, which in turn produces better water inflow angles and improved cavitation behaviour. A fairing hubcap guides the propeller slipstream around an individually designed rudder bulb, thereby substantially decreasing the drag. Vibrations are reduced to a minimum.

This arrangement differs from earlier energy-efficient rudder systems. In the new design, the bulb is fixed to the rudder blade and turns together with the rudder. The Energopac rudder is also equipped with a flap, ensuring superb manoeuvring characteristics with only relatively small steering angles needed to keep the vessel on course. This considerably reduces steering losses whilst in transit.

Model tests were performed with both single and twin-screw ships. In both, the Energopac application resulted in significant reductions in required power and fuel consumption. Where the system replaced another sophisticated propeller-rudder arrangement, a 2% power decrease was noted. When the system was used in place of a conventional propeller and semi-spade rudder configuration, an 8% efficiency gain was recorded, according to the company.

A 20,000 dwt cargo vessel with a main engine of 8000 kW and a controllable pitch propeller installation could benefit from annual fuels savings of USD 45,000 for each percentage point in power reduction. On a 22 knots twin-screw RoPax ferry with an installed power of 25,000 kW, Energopac will generate annual savings of over USD 125,000 per percent. For a 5000TEU-plus containership with 50,000 kW installed on one fixed pitch propeller, Energopac could realise an annual reduction in fuel costs of USD 300,000 per each percentage of improvement.


 

About the Company

You may also like:
Trending Technology, World Shipping & Maritime News





Latest Marine News and Technology Articles | Maritime 2015 Buyer's Guide





MarineTalk

E-mail:  Contact Us

Copyright 1998 - 2015 MarineTalk
Division of Link Internet Business Solutions
All rights reserved.

The reproduction, retrieval, copying or transmission of this Web site content,
in whole or in part, is not permitted without the express permission of
MarineTalk .