Waste Heat Recovery MISSION XS-7V

General

• Able to supply or support the steam demand during port stay
• Cost of steam production (energy) is nearly free
• Financially sound investment with very short payback time
• Adds a green” profile to the ship
• Lower emission tax when finally agreed
• Less maintenance and lower operating costs for the oil-fired boiler

For retrofit and new installations
In the coming years, themarine industry and shipowners face big challenges as new environmentallegislations have special focus on the reduction of emissions from fossil fuels.Therefore Aalborg Industries has developed an efficient exhaust gas economizerutilizing the heat in the exhaust gas from the auxiliary engines during portstays, which will significantly reduce the oil consumption for the oil-firedboiler.
Waste heat recovery concept after auxiliary engines basedon a new design of high-efficient exhaust gas boiler
For severaldecades, we have installed WHR systems after the ship’s main engines and theseunits are to a large extend able to meet the vessels steam requirement duringseagoing operation and for some installations also able to assist with thegeneration of electrical power.
The waste heat from the auxiliaryengines has not been considered in the past, but it actually contains a largeenergy amount which can be utilized to assist with the steam requirements mainlyduring port stays, but for some vessels also during seagoingoperation.
The WHR concept has been specially developed as a customizedsolution with special focus on energy generation compared to return ofinvestment and payback time can be reduced to 7 months for a complete WHR boilersystem, accessories and installation onboard the ship. The normal payback timewill be approximately 1 to 1 year depending on the number of days, the producedsteam can be utilized (offset against of the steam requirement from the oilfired boiler) and the redundancy requirements.
We offer a concept basedon well-proven and innovative solutions to ensure the best operation conditionsand optimal return of investment. The design of the heating surface of the WHRboiler is the result of an enhancement of our wellproven technologies with asmall footprint and the lowest possible weight to output ration.
Toensure the most advantageous design, the WHR boiler concept will be speciallytailored to the individual ship and engine design with due consideration ofexisting uptake back pressure etc. The concept comes in two designs;

• One that requires a steam space in another boiler (e.g. in an existingauxiliary boiler) and
• One that has its own steam space.