Top picture: Turbocharger cut-out with a swing gate valve
Lower picture: Installation of a turbocharger cut-out onboard a vessel
July 29, 2010
Growing demand for MAN Diesel turbocharger cut-out solution
MAN Diesel & Turbo reports growing interest in its turbocharger cut-out solution which allows optimal fuel consumption at both full and part load.
More available tonnage, increased fuel prices and general acceptance of slow-steaming have brought changes to the sailing pattern of the largest containerships that make it beneficial to change between full and part load, depending on route direction.
A turbocharger cut-out with swing gate valves permits a frequent change between full and part load operation without having to install and remove blinding plates manually.
MAN Diesel & Turbo's turbocharger cut-out has been on the market for about a year, with several of the largest shipowners placing orders. Now interest is soaring, reports Peter Rytter Jensen, manager of the retrofit department in PrimeServ Copenhagen.
"The big advantage is that you have a flexible solution to save on fuel oil," says Mr. Jensen. "A lot of customers need to be able to continue to have the possibility of running on full load, but at the same time saving fuel oil when they are slow steaming."
"Now we have a handful of installations in service, but there is a huge number of orders from the last few months waiting to be installed. It really has the attention of the biggest shipowners out there," Mr. Jensen adds.
Fuel oil savings
MAN Diesel & Turbo says that recent tests have proven that large container vessels, powered by, for example, a 12K98MC on slow-steaming at 40 percent MCR, can save 8 grams HFO per kWh when one out of three turbochargers is disconnected. This corresponds to a reduction in fuel consumption of some 5 percent. When there is a need to increase power to full load, the turbocharger cut-out with swing gate can easily and safely be opened without manual work.
There is currently about three months delivery time for constructing the necessary parts. The installation itself is done in about 48 hours and can be carried out at eight PrimeServ locations:
MAN PrimeServ Benelux
MAN PrimeServ Dubai
MAN PrimeServ Hamburg
MAN PrimeServ Hong Kong
MAN PrimeServ Portugal
MAN PrimeServ Singapore
MAN PrimeServ Spain
MAN PrimeServ Shanghai