HVAC
Mitsubishi Heavy Industries. These are expected to be delivered early in 2015 and in 2016 respectively. Sami Piirainen, Halton Marine’s
cruise and ferry segment director, explained that one of the biggest issues in HVAC savings for cruise ships is galley ventilation. “We spent five years designing the Marvel system, which is integrated into Halton galley hoods.” In the past, he said, galley ventilation had been on at 100 per cent, “as there has previously been no automation or detection on what cooking is really done in the galley.” Marvel, however, has automated
sensors that detect what cooking is actually being done in each cubicle, allowing it to fine-tune ventilation in the galley according to real needs. So if only half the galley is being used for cooking, “we are only catering for that amount through the ventilation, rather than at 100 per cent as was previously the case,” Mr Piirainen said. In big galleys such as in the main galley and the crew galley, “this gives remarkable savings of 50 and sometimes 60 per cent,” he added.
The company is currently working
on third generation galley hoods that, by using a more efficient capture jet
HVAC deal for hybrid ferry
solution, keep the air inside the hood and stop it escaping into the galley. Mr Piirainen described this as a simple way of making a more efficient hood that “can easily save 50 per cent in excess air rate, still keeping the efficiency of the hood at the same level.” This is an improvement on Halton Marine’s current system, which it says can save up to 30 per cent with its hood’s first generation capture jet solution compared to standard hoods. The company has carried out measurements for its third generation galley hoods and plans to launch them this year. PST
Dometic Marine provided chilled water air handlers to Hornblower Hybrid, which is powered by Hydrogen fuel cells, solar panels and wind turbines
Combining the double HVAC themes of energy efficiency and its offshoot, compact size, Dometic Marine scooped the contract to provide the air handlers for a hydrogen, solar and wind hybrid passenger vessel in New York. San Francisco- headquartered operator Hornblower launched the Hornblower Hybrid in November. Hydrogen fuel cells, solar panels and wind turbines power the 600-pasenger energy-conserving vessel, which transports guests on sightseeing, dinner and special event cruises. Dometic Marine director of national OEM sales Ed Todd said a major reason for the contract win was because it was able to be flexible with the design of its ATL air handlers and ensure they were compact. “They only had a small amount of space but required 25 tonnes of air handler capacity – that is our niche, we build air handlers to fit, and will meet clients’ requests. We do one-offs, which is
our speciality.” The ATL air handlers are fitted horizontally to suit height restrictive installations, as in the case of Hornblower Hybrid. Hornblower’s environment- friendly characteristics extend beyond powering the vessel – sustainable materials are used throughout, including blue-tinted recycled glass exterior viewing platforms, LED lighting and aluminium wall coverings. Dometic’s air handlers suit this theme as they use a chilled water system which allows for individual temperature controls for all different areas of a ship. “This means that individual zones can be the temperature they want to be without wasting energy,” said Mr Todd. Compact size is also an important
element for Finnish manufacturer Koja Marine. The company uses smaller units and expects this strategy to be important in the future. “We have developed many small units for public areas; they
have to be very compact so that you can hide them behind linings in walls and above ceilings,” Koja Marine vice president Esko Nousiainen said. Imtech's Mr Gebken pointed
out that the development of smaller units was important since shipowners are looking to maximise revenue-generating payload areas, such as cabins, restaurants and shops, while optimising the ceiling height. "Both aspects influence the air conditioning system and have led to the development of smaller components," he said. Imtech aims to decentralise AC components to produce cooling only where and when it is required. This is different from earlier concepts where large AC rooms and trunks took up a lot of space and continuously served the whole ship. Recently, the company introduced
new induction units for cabin air conditioning that were installed on board Royal Caribbean Cruises’ five Celebrity-class vessels.
www.passengership.info
Passenger Ship Technology I 2nd Quarter 2013 I 63
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