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Script
- Hvac is the second most energy consumption on ships, special care with sophisticated control systems are to be used to save energy.
- Fire, smoke and corrosion control are of highest importance
- Heat loads: solar , sensible, latent, occupants, lighting, wall/roof gains, electrical equipment, hot piping, Fresh air, infiltration, motors. (ventilation, solar and skins conduction varies to the area of ship operation) Maximum to be allowed.
- HVAC can be DX, usually for smaller areas and chilled water for large halls but not the rule.
- Condenser units use sea water with heat exchangers and sometimes air where permissible.
- Cabins HVAC, FCU units are also used for independent control, some cabins are pre manufactured and then slide in one by one during construction.
- Diffusers: special attention to diffusers due to low ceilings, not to cause drafts.
- VAV systems are used for energy control and sometimes dual duct systems are used.
- AHU sections: Filters, HEPA for crowded spaces (atrium, cinema, dining areas etc...) heat recovery wheels, coils, (heating , cooling) humidifier, sound attenuation. Plus two condensate drains due to ship movement.
- Ductwork: preferably round due to tight spaces as well protected against fire, attenuation lining.
- BMS: of highest quality and most advanced systems to save energy and control well the humidity level.
- Fresh air: to be adjusted with amount of CO2 detection in large areas, atrium, dining, cinema etc...
- Spares parts: always to be ready on board as the ship is far from land. ex: oil, refrigerant, filters.
- Coils: copper tubes, fins also exposy coated.
- Chilled beams are also used to save on energy and space.
- For more details or consultation please contact www.cfn-hvac.com