Feature 1 | FinLAnd’s MArine indUstries
Feature 3
Halton clears the air
Product innovation remains the core pursuit for ventilation, fire safety, and
galley systems supplier Halton Marine, and new demand is emerging for
energy-saving technology.
T
ommi Rantanen, Halton Marine Halton Marine also recently introduced hoods with a high utilisation rate.
marine and offshore business area a new version of its single duct air- Most of the grease particles are filtered
director, says that new demand conditioning cabin units intended for through two-stage mechanical filtration.
is fast emerging for energy-saving air- crew cabins. The manually operated The third stage removes the remaining
conditioning units with automated fan Halton HMC is arranged to fit in a small grease particles using ultraviolet
control from cruiseship customers. Such standard roof panel construction, with light technology, called Halton Capture
units, for passenger cabins, are already the visible air duct plate having standard Ray technology. Here, UV-lamps are
being produced for MSC Cruises’ big paned dimensions. It can be installed arranged after the mechanical filters.
newbuilding, the 133,500gt MSC from below. The units are available for B- The UV light results in two chemical
Fantasia, being built at Aker Yards in 0 to B-15 fire classification. processes. Photolysis takes place when
France. UV light hits the long molecular chains
In summer 2006 a test onboard MSC Ultraviolet solutions and breaks the double bonds resulting
Musica was arranged. Fifty cabins Another example of an innovative Halton in smaller molecular chains of grease.
were connected to a system providing Marine product is ultraviolet (UV) The second chemical reaction taking
individually controlled fan pressure and filtration of the exhaust air from the place is called Ozonolysis, in which the
supply air temperature. Comparing the galley duct. Galley hoods are provided ozone generated by the lamps continues
energy consumption with a near identical with different amounts of filtration to react with the smaller chains of grease
group of cabins with a semi-automatic depending on the use. The purpose of and grease vapours and alters them
system, the results showed energy savings mechanical filters is to remove large chemically.
of between 15% to 30%. In this type particles from the exhaust stream and The resulting substance does not stick
of system, various equipment, such as to provide fire protection by preventing to the ducts or fans, which reduces the
frequency converters and the operation flames from entering the exhaust duct. risk of fire and also the need for expensive
of valves, can be optimised for minimum The three-stage filtration process is cleaning of the ducts. The first marine
energy consumption. considered to be the best solution for installation of this type was on QM2. After
10 months in operation, the ducts were
examined using a robot. The ducts with
UV filtration were clean. Consequently,
Cunard placed an order for UV-filtration
for the remaining galley hoods. Today
a growing number of the galley hoods
in the orderbook are of the three-stage
type with UV filtration. Retrofits are also
being installed, for example on the fleet
of MSC Cruises. NA
Variable Air Volume–type cabin units
for MSC Fantasia being produced at the
factory of Halton Marine in Lahti, Finland.
On the right, one unit in the test station,
part of the quality control procedure.
The Naval Architect February 2008 85
NA Feb 08 - p85.indd 85 05/02/2008 09:52:30
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