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Energy storage to boost propulsion

Chemical tanker’s hybrid propulsions system will “improve efficiency, reduce exhaust emissions and lower noise levels”

Canadian company Corvus Energy is to supply a lithium ion-based energy storage system (ESS) for a new hybrid chemical tanker being built for Norwegian owner Rederiet Stenersen. The chemical tanker will be the first vessel of its kind to utilise an ESS for propulsion. Corvus Energy will supply its next generation Orca Energy ESS solution to integrate with Finland-based WE Tech Solutions’ propulsion system, which will deliver “industry leading environmental performance for this new vessel”.

Orca Energy is part of the Orca ESS product line from Corvus Energy which is specifically designed for maritime applications.The Orca ESS solution will be integrated with WE Tech’s Direct Drive Permanent Magnet Shaft Generator solution into the 17,500 dwt IMO class II chemical tanker. This vessel is the first of two on order by Stenersen. The delivery from WE Tech to the first vessel is scheduled for Q2 of 2017. “Corvus Energy’s industry leadership and experience made our selection of Orca a very straightforward decision”, said Niklas Jakobsson Project Manager at WE Tech. “The innovations Corvus has achieved on cost, safety and performance have created an extremely compelling energy storage solution.”


Stenersen operates a fleet of 16 purpose built chemical/product carriers ranging from 13,000 to19,000 dwt. All vessels are deployed in North West European trade and equipped to the highest standards in order to meet the customers’ requirements and the harsh conditions in Northern Europe. Utilizing Corvus Energy’s Orca ESS solution for the hybrid power and propulsion systems will allow for running fewer diesel generators for certain operations – improving efficiency, reducing the exhaust emissions and lowering noise levels, making it the most environmentally friendly chemical tanker ship in the Rederiet Stenersen fleet.

“The Orca Energy ESS from Corvus was an attractive solution for our new ships”, said John Stenersen, Director, Ship Management at Stenersen. “By combining industry leading safety, performance and economic feasibility, the Orca ESS aligns with our mission to provide our customers with safe, reliable & cost efficient tanker transportation while meeting the highest quality, safety and environmental tandards.”

“This latest order from WE Tech Solutions shows the viability of energy storage for the hybridization of longer-haul vessels”, said Halvard Hauso, SVP Business Development of Corvus Energy based in Bergen Norway. “As the cost of lithium ion batteries continues to improve we will see more and more applications beyond the traditional ferry and tug base.”


ETI launches two energy saving projects

UK-based Energy Technologies Institute (ETI) has launched two new projects aimed at boosting the fuel efficiency of ship operations.

ETI is a public-private partnership between global energy and engineering companies – BP, Caterpillar, EDF, Rolls-Royce and

Shell – and the UK Government.


ETI’s role is to act as a conduit between academia, industry and the government to accelerate the development of low carbon technologies. It is expected to bring together engineering projects that develop affordable, secure and sustainable technologies to help the UK address its long term emissions reductions targets as well as delivering nearer term benefits.


One new ETI project aims to develop and demonstrate a waste heat recovery system for ships that could deliver fuel efficiency savings of at least 8%. The £3.6 million (US$4.5m) project will be led by AVID Technology which is based in Cramlington, North East England.

It will work alongside RED Marine Limited of Hexham, Newcastle-based Royston Power and Enogia based in Marseilles, France,

to deliver a cost effective waste heat recovery system for use

across all types of ships.


The 26 month project should see the waste heat recovery system installed on an offshore support vessel by the end of 2018 ahead of a further six months of testing.


ETI says that fuel efficiency in shipping can be improved by reducing the electrical load provided by the ship’s generators, through recovering heat energy from the exhaust stream, in addition, substantially reducing the temperature of the exhaust gas by converting the heat to electricity.


The technology being developed in the ETI’s project should be capable of being deployed on a range of marine vessels, including chemical tankers, general cargo vessels, container feeders, offshore support vessels and roll on roll off passenger ships.


Paul Trinick, the ETI’s HDV Marine Waste Heat Recovery System Project Manager said: “The ETI has recently published an insight report which analyses the UK shipping fleet, the potential opportunities for ship owners and operators and identifies the most promising technologies that couldreduce fuel consumption economically. We have established that a 30% reduction in fleet fuel consumption can be achieved by using a combination of innovative technologies, including waste heat recovery systems, with an approximate payback period of just two years.


“It is important that we now develop and demonstrate this technology to provide confidence to shipping owners and operators that it can deliver tangible efficiencies and savings under real world conditions.”

Ryan Maughan, founder and managing director of AVID Technology, which specialises in the design and manufacture of electrically powered systems for low emission vehicles said: “The technology solution we are targeting with our partners is based on improving fuel efficiency by recovering heat energy from the exhaust stream therefore reducing the electrical load provided by the ship’s generators and by lowering the temperature of the exhaust gas by converting

heat to electricity.”

In another initiative ETI is working with Teignbridge Propellers International Limited (TPIL) on a £3 million project to develop a High Efficiency Propulsion System (HEPS) for ships. The two year project aims to develop a commercially-viable system that can be retrofitted to a variety of vessel types. Is expected that the HEPS technology will deliver a fuel efficiency benefit of greater than 8% on most vessels.


Deborah Stubbs, the ETI’s High Efficiency Propulsion System Project Manager said: “Unlike other forms of transport it is difficult to replace fossil fuels in marine vessels with low carbon alternatives so increasing fuel efficiency will become progressively more important if emissions and costs are to be reduced for the shipping industry.
This project will develop a commercially viable product suitable for

a wide range of vessels types and capable of being retrofitted to ensure it is attractive to ship owners and operators.”


Based in Newton Abbot, Devon, Teignbridge is the largest propeller and stern gear producer of its kind in Europe. Its chairman, David Duncan, said: “We are delighted to have been selected for this technology development and demonstration project, it fits very well with the company’s research and development strategy and plans. Teignbridge Propellers has an excellent engineering design team and a background of design development. The project will be helped by the use of the dedicated research test vessel presently under construction for Teignbridge Propellers. The selection by the ETI is a recognition and endorsement of the company’s abilities.”


The project will have the use of a purpose designed and dedicated research vessel currently under construction. The twin-hulled vessel will be used to trial and test a range of propellers and propulsion equipment. The vessel which is a floating laboratory is believed to be the first of its kind. It is capable of testing a range of propellers from slow speed with high bollard pull to high speed in excess of 40 knots.

TPIL’s dedicated research vessel will be used to trial and test a range of propellers and propulsion equipment.

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