Working principle

The Aalborg Micro is installed after a vessel’s auxiliary engine

(or small main engine). It has a short start-up time of just

two minutes. When the exhaust gas passes over its heating

surface, the waste heat energy in the gas is absorbed for the

production of hot water or steam. An internal damper, which

allows up to 80% of the exhaust gas to bypass the heating

surface, keeps back pressure within safe limits.

The Aalborg Micro is not designed with its own steam space.

It is used in connection with one or more fired boilers, which

act as the steam/water space. Forced-circulation pumps pro

vide the Aalborg Micro with water at saturation temperature

from the fired boiler(s).

In the Aalborg Micro, heat from the engine exhaust gas is

transferred to the water side by convection. The generated

steam/water mixture is then discharged into the steam space

of the fired boiler(s), where the heavier water particles sepa

rate from the steam.