Any information on the engine?
Google shows Wärtsilä licensing their LNG technology.
Not so much about what drives the Isla Bella?
The monster engines never fail to amaze me.
http://www.emma-maersk.com/engine/Wartsila_Sulzer_RTA96-C.htm
This is the 14 cylinder.
Fuel consumption at maximum power is 0.278 lbs per hp per hour (Brake Specific Fuel Consumption). Fuel consumption at maximum economy is 0.260 lbs/hp/hour. At maximum economy the engine exceeds 50% thermal efficiency. That is, more than 50% of the energy in the fuel in converted to motion.
For comparison, most automotive and small aircraft engines have BSFC figures in the 0.40-0.60 lbs/hp/hr range and 25-30% thermal efficiency range.
Even at its most efficient power setting, the big 14 consumes 1,660 gallons of heavy fuel oil per hour.
Note, that my wife’s Prius (I LOVE IT) is considered 38% efficient by Toyoda.
South Korea’s Doosan Engine, under license from MAN Diesel and Turbo, delivered the first 8L70ME-GI engine for TOTE’s 3,100-TEU Marlin Class containership this week.
I was a design then field engineer for a crude oil production facility that used ~31,000 cubic inch V18 from Wartsila. They make a good engine. I have little good to say about their controls and field application to generators at the time.
ME-GI Dual Fuel MAN B&W Engines
Since 2012, MAN Diesel & Turbo has
received significant orders for the gasfuelled
ME-GI engine. The first MEGI
engine specified was for two gasfuelled
container vessels ordered by the
company TOTE. This first order is for
an 8L70ME-C8-GI engine, sized for a
3,100 teu containership. It is the first of
its kind, and it is an interesting fact that
this is the first fully commercial vessel
operating on natural gas which is built
without any subsidies. The vessels will
be built by NASSCO shipyard, and the
first vessel is scheduled for delivery in
2015.
Furthermore, MAN Diesel & Turbo has
received an order for 5 + 5 LNG carriers
to Teekay. Also powered by ME-GI engines,
these LNG carriers are to be built
by DSME, and the first delivery will be
in 2016. The target for Teekay has been
to reduce both fuel oil consumption and
maintenance costs.
The first two ship types are rather different.
The LNG carriers already have
LNG on board, so the challenge for this
ship type is to design an efficient gas
supply system, taking the handling of
boil-off gas (BOG) into consideration.
The gas supply system should be able
to handle the boil-off gas from the cargo
tank and deliver it to the main engine
as well as to the dual fuel gensets. The
gas supply system must also be able to
direct the BOG to the GCU in order to
protect the tank if the pressure in the
tanks gets too high.