November 12, 2019 Volume 15 Issue 43
 

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Maersk trial will put huge containerized battery system on cargo ship to improve power production

A containerized 600-kWh marine battery system will be installed in a trial on board the Maersk Cape Town in December 2019 to improve vessel performance and reliability while reducing CO2 emissions.

"This trial will provide a greater understanding of energy storage that will support Maersk in moving towards further electrification of its fleet and port terminals. Maersk will continue to facilitate, test, and develop low-carbon solutions on our journey to become carbon neutral by 2050," said Søren Toft, Maersk COO.

Propelling marine vessels with battery power alone is still years away from being a technically and economically viable option. However, marine battery systems can be used to improve the efficiency of a vessel's onboard electrical systems, such as the Maersk Cape Town's generators. By maintaining the vessel's auxiliary generators at a more optimal load, and avoiding running generators when not needed, overall fuel consumption can be reduced.

Additionally, it will support the generators with up to 1,800 kVA of power during rapid changes in electrical load, such as thruster operation. This can reduce generator maintenance requirements. The battery system is also capable of providing redundant power, which can improve reliability at sea by ensuring continuous power supply.

The Maersk Cape Town includes a waste heat recovery system, which is a special feature of many Maersk container vessels. This system increases overall efficiency, as it allows the batteries to charge by capturing electrical energy from heat that would otherwise have been lost out of the exhaust gas system for the main propulsion.

"This exciting pilot, the first of its kind in the industry, will show the potential of battery technologies to keep improving the performance of our vessels while also reducing fuel consumption in our non-propulsion electrical systems," said Ole Graa, Maersk Head of Fleet Technology.

The containerized battery energy storage system has been manufactured in Odense, Denmark, by the system integrator and turnkey supplier Trident Maritime Systems. The battery system will be transported to Singapore soon and installed on board the Maersk Cape Town.

The vessel is a Singapore-flagged 249-m-long container ship built in 2011 that sails between West Africa and East Asia. The first full voyage with the new system in place will take place next year and will be monitored closely to evaluate the performance of the system against the trial's ambitions.

Battery modules will be operating within the container in conjunction with other electrical and control components. Maersk has also worked in close collaboration with the American Bureau of Shipping, the vessel's classification society, to ensure safety and compliance.

The application of battery technology and the understandings gained should enable further innovation across Maersk's vast shipping interests.

Source: Maersk

Published November 2019

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