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Ventilation

Supply Fan

A supply fan delivers outside air into a space under positive pressure rather than removing it, and on an engine room that air has to cover combustion air demand for the main and auxiliary engines as well as cooling, which is a very different sizing basis from an accommodation air handling unit.

561models 7manufacturers
Models

Models in this type.

The 100 models with the most complete data of 561 in Supply Fan. Every row links to full specifications, documents and service notes.

Novenco MarineCAP Supply 10000m3h accommodation 3.0 kW Novenco MarineCAP Supply 10000m3h cargo hold 3.0 kW Novenco MarineCAP Supply 10000m3h engine room 3.0 kW Novenco MarineCAP Supply 1000m3h accommodation 0.5 kW Novenco MarineCAP Supply 1000m3h cargo hold 0.5 kW Novenco MarineCAP Supply 1000m3h engine room 0.5 kW Novenco MarineCAP Supply 15000m3h accommodation 4.5 kW Novenco MarineCAP Supply 15000m3h cargo hold 4.5 kW Novenco MarineCAP Supply 15000m3h engine room 4.5 kW Novenco MarineCAP Supply 20000m3h accommodation 6.0 kW Novenco MarineCAP Supply 20000m3h cargo hold 6.0 kW Novenco MarineCAP Supply 20000m3h engine room 6.0 kW Novenco MarineCAP Supply 2000m3h accommodation 1.0 kW Novenco MarineCAP Supply 2000m3h cargo hold 1.0 kW Novenco MarineCAP Supply 2000m3h engine room 1.0 kW Novenco MarineCAP Supply 30000m3h accommodation 9.0 kW Novenco MarineCAP Supply 30000m3h cargo hold 9.0 kW Novenco MarineCAP Supply 30000m3h engine room 9.0 kW Novenco MarineCAP Supply 3000m3h accommodation 1.5 kW Novenco MarineCAP Supply 3000m3h cargo hold 1.5 kW Novenco MarineCAP Supply 3000m3h engine room 1.5 kW Novenco MarineCAP Supply 50000m3h accommodation 15.0 kW Novenco MarineCAP Supply 50000m3h cargo hold 15.0 kW Novenco MarineCAP Supply 50000m3h engine room 15.0 kW Novenco MarineCAP Supply 5000m3h accommodation 2.5 kW Novenco MarineCAP Supply 5000m3h cargo hold 2.5 kW Novenco MarineCAP Supply 5000m3h engine room 2.5 kW Novenco MarineCAP Supply 500m3h accommodation 0.2 kW Novenco MarineCAP Supply 500m3h cargo hold 0.2 kW Novenco MarineCAP Supply 500m3h engine room 0.2 kW Novenco MarineCAP Supply 8000m3h accommodation 4.0 kW Novenco MarineCAP Supply 8000m3h cargo hold 4.0 kW Novenco MarineCAP Supply 8000m3h engine room 4.0 kW Novenco MarineCFM Supply 10000m3h accommodation 3.0 kW Novenco MarineCFM Supply 10000m3h cargo hold 3.0 kW Novenco MarineCFM Supply 10000m3h engine room 3.0 kW Novenco MarineCFM Supply 1000m3h accommodation 0.5 kW Novenco MarineCFM Supply 1000m3h cargo hold 0.5 kW Novenco MarineCFM Supply 1000m3h engine room 0.5 kW Novenco MarineCFM Supply 15000m3h accommodation 4.5 kW Novenco MarineCFM Supply 15000m3h cargo hold 4.5 kW Novenco MarineCFM Supply 15000m3h engine room 4.5 kW Novenco MarineCFM Supply 20000m3h accommodation 6.0 kW Novenco MarineCFM Supply 20000m3h cargo hold 6.0 kW Novenco MarineCFM Supply 20000m3h engine room 6.0 kW Novenco MarineCFM Supply 2000m3h accommodation 1.0 kW Novenco MarineCFM Supply 2000m3h cargo hold 1.0 kW Novenco MarineCFM Supply 2000m3h engine room 1.0 kW Novenco MarineCFM Supply 30000m3h accommodation 9.0 kW Novenco MarineCFM Supply 30000m3h cargo hold 9.0 kW Novenco MarineCFM Supply 30000m3h engine room 9.0 kW Novenco MarineCFM Supply 3000m3h accommodation 1.5 kW Novenco MarineCFM Supply 3000m3h cargo hold 1.5 kW Novenco MarineCFM Supply 3000m3h engine room 1.5 kW Novenco MarineCFM Supply 50000m3h accommodation 15.0 kW Novenco MarineCFM Supply 50000m3h cargo hold 15.0 kW Novenco MarineCFM Supply 50000m3h engine room 15.0 kW Novenco MarineCFM Supply 5000m3h accommodation 2.5 kW Novenco MarineCFM Supply 5000m3h cargo hold 2.5 kW Novenco MarineCFM Supply 5000m3h engine room 2.5 kW Novenco MarineCFM Supply 500m3h accommodation 0.2 kW Novenco MarineCFM Supply 500m3h cargo hold 0.2 kW Novenco MarineCFM Supply 500m3h engine room 0.2 kW Novenco MarineCFM Supply 8000m3h accommodation 4.0 kW Novenco MarineCFM Supply 8000m3h cargo hold 4.0 kW Novenco MarineCFM Supply 8000m3h engine room 4.0 kW Novenco MarineCMP Supply 10000m3h accommodation 3.0 kW Novenco MarineCMP Supply 10000m3h cargo hold 3.0 kW Novenco MarineCMP Supply 10000m3h engine room 3.0 kW Novenco MarineCMP Supply 1000m3h accommodation 0.5 kW Novenco MarineCMP Supply 1000m3h cargo hold 0.5 kW Novenco MarineCMP Supply 1000m3h engine room 0.5 kW Novenco MarineCMP Supply 15000m3h accommodation 4.5 kW Novenco MarineCMP Supply 15000m3h cargo hold 4.5 kW Novenco MarineCMP Supply 15000m3h engine room 4.5 kW Novenco MarineCMP Supply 20000m3h accommodation 6.0 kW Novenco MarineCMP Supply 20000m3h cargo hold 6.0 kW Novenco MarineCMP Supply 20000m3h engine room 6.0 kW Novenco MarineCMP Supply 2000m3h accommodation 1.0 kW Novenco MarineCMP Supply 2000m3h cargo hold 1.0 kW Novenco MarineCMP Supply 2000m3h engine room 1.0 kW Novenco MarineCMP Supply 30000m3h accommodation 9.0 kW Novenco MarineCMP Supply 30000m3h cargo hold 9.0 kW Novenco MarineCMP Supply 30000m3h engine room 9.0 kW Novenco MarineCMP Supply 3000m3h accommodation 1.5 kW Novenco MarineCMP Supply 3000m3h cargo hold 1.5 kW Novenco MarineCMP Supply 3000m3h engine room 1.5 kW Novenco MarineCMP Supply 50000m3h accommodation 15.0 kW Novenco MarineCMP Supply 50000m3h cargo hold 15.0 kW Novenco MarineCMP Supply 50000m3h engine room 15.0 kW Novenco MarineCMP Supply 5000m3h accommodation 2.5 kW Novenco MarineCMP Supply 5000m3h cargo hold 2.5 kW Novenco MarineCMP Supply 5000m3h engine room 2.5 kW Novenco MarineCMP Supply 500m3h accommodation 0.2 kW Novenco MarineCMP Supply 500m3h cargo hold 0.2 kW Novenco MarineCMP Supply 500m3h engine room 0.2 kW Novenco MarineCMP Supply 8000m3h accommodation 4.0 kW Novenco MarineCMP Supply 8000m3h cargo hold 4.0 kW Novenco MarineCMP Supply 8000m3h engine room 4.0 kW Novenco MarineCSM Supply 10000m3h accommodation 3.0 kW
All 561 models
By manufacturer

Manufacturers.

All 7 manufacturers with models of Supply Fan. Every name opens a search across the full library.

Related types

Also in Ventilation.

The other equipment types in this category.

Axial FanCentrifugal FanEmergency Fire FanEngine Room Supply FanExhaust FanFire/Smoke Damper
Knowledge

What to check on a Supply Fan.

A supply fan draws air from open deck and delivers it into a space under positive pressure, the mirror image of an exhaust fan's job. Engine room supply has to cover two separate demands at once: combustion air for the main engine and auxiliaries, and general cooling of the space, which is why engine room supply capacity is checked against engine air consumption figures rather than a simple air-change target. Accommodation supply units condition the air first, usually with a heating and/or cooling coil upstream of the fan, before distributing…

The Job a Supply Fan Does

A supply fan draws air from open deck and delivers it into a space under positive pressure, the mirror image of an exhaust fan's job. Engine room supply has to cover two separate demands at once: combustion air for the main engine and auxiliaries, and general cooling of the space, which is why engine room supply capacity is checked against engine air consumption figures rather than a simple air-change target. Accommodation supply units condition the air first, usually with a heating and/or cooling coil upstream of the fan, before distributing it through ducted diffusers. The positive-pressure side of the ventilation balance is what defines this fan's role, whatever space it happens to serve.

Supply fan ventilation arrangement
Arrangement diagram of a supply fan drawing outside air through a weather louvre and filter, then pushing it down through a duct into the engine room, which is held under positive pressure.

Main Components

  • Impeller and casing – centrifugal for most ducted supply duties, sized against the full system resistance including any coil.
  • Inlet filter – washable or disposable, protects the coil and downstream ductwork from salt and dust.
  • Heating and/or cooling coil – steam, thermal oil or electric heating and a chilled water or refrigerant cooling coil on accommodation units.
  • Weather louvre and intake screen – on the open-deck inlet, keeps out rain and spray while limiting pressure loss.
  • Silencer – where the unit serves accommodation spaces with noise limits.
  • Distribution ductwork – with volume control dampers and diffusers set to balance airflow between outlets.

Selection and Sizing

Engine room supply fans are sized to exceed the combustion air demand of the main and auxiliary engines running together, plus enough margin to remove radiant heat from the space; two fans each rated at roughly half the total demand is a common arrangement so one can be taken out of service for maintenance without losing all ventilation. Accommodation units are sized against occupancy and recognised air-change standards, with filter class and coil duty added on top. Static pressure has to include coil pressure drop, which is often the largest single loss in the system and easy to underestimate at the design stage.

Regulations and Class

SOLAS Chapter II-2 requires that ventilation supplying combustion air to machinery spaces can be stopped, automatically or by a remote control located outside the space, as part of the fixed fire-extinguishing system release sequence, so a fire cannot draw on an unlimited air supply. Emergency stops must be positioned where they remain accessible if the space itself becomes untenable. Class machinery rules set out the redundancy expected for engine room supply capacity.

Typical Faults

  • Clogged intake filter – reduces airflow and lets engine room or accommodation temperatures climb, straining equipment that depends on ambient cooling.
  • Belt slippage or wear on belt-driven fans – drops impeller speed and airflow well before the fan looks obviously faulty.
  • Fouled or leaking heating/cooling coil – gives poor accommodation temperature control and, if leaking, condensate-driven corrosion nearby.
  • Blocked louvre intake screen – salt crust or sea spray in heavy weather cuts capacity exactly when engine room cooling is most needed.
  • Faulty emergency stop wiring – the fan either fails to stop on a fire alarm, a safety-critical failure, or fails to restart cleanly after a routine test.

What to Look for in a Supplier

  • A verified airflow and static pressure curve for the actual duct and coil configuration, not a catalogue figure for the bare fan.
  • Filter media that is genuinely available in the ship's trading area, not a proprietary cartridge with one source.
  • A fire-safe shutdown interface that matches the ship's existing fire detection panel without rewiring.
  • Documented redundancy sizing for engine room duties, showing the fan meets combustion air demand with one unit out of service.

Do not permanently defeat an engine room supply fan's automatic fire shutdown to stop nuisance trips; find and fix the false trigger instead, because that shutdown is doing exactly its intended job the one time it matters.

Search by manufacturer AFRISOWISKASwagelokAlfa Laval S.p.A.MAN Energy SolutionsWärtsiläEndress+HauserABB MarineAlfa LavalMacGregorNovenco MarineCarrier MarineseimiSiemens MarineHeinen & Hopman
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