Air Dryer
medium
3 models total
Compressed air dryers for control and instrument air quality
3 manufacturers · 3 models
Atlas Copco
1
FD Marine Refrigerated Dryer
20-1000 Nm³/h
· 3.0 kW
· Compressed Air
· Refrigerated air dryer
Medium
Compressed Air
Power (kW)
3
Type
Refrigerated Air Dryer
Common Failures & Inspection Points
- Refrigerant compressor failure
- Condensate drain blocked
- Heat exchanger fouling
- Thermostat malfunction
Service: +3°C PDP — suitable for general service air, NOT instrument air. Drain condensate trap daily. Annual refrigerant check.
Spare Parts: Ersatzteile über Atlas Copco oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Strengths
- Low power consumption (3 kW) suitable for vessel energy budgets
- Compact marine‑rated design fits limited engine room space
- Provides consistent +3 °C PDP, adequate for general service air
- Simple maintenance: daily condensate trap and annual refrigerant check
- Robust construction with Atlas Copco’s proven compressor technology
Weaknesses
- Not certified for instrument or critical control air (higher purity required)
- Refrigerant‑compressor failures reported in the field
- Condensate drain can become blocked if not serviced daily
- Heat‑exchanger fouling reduces efficiency over time
- Thermostat malfunction may affect dew‑point stability
Typical Vessels:
Container ShipGeneral Cargo VesselOffshore Supply VesselFerrySmall Tanker
Decision Guide: Choose if: you need a compact, low‑power dryer for general service air on medium‑size vessels and can perform daily condensate maintenance. Avoid if: instrument‑grade air is required, space for additional filtration is limited, or you prefer oil‑free screw dryers with lower maintenance.
Use Cases: Provides dry service air for pneumatic tools, deck winches, cargo handling equipment, ventilation blowers, and general plant utilities on board.
Beko
1
DRYPOINT M Marine
5-200 Nm³/h
· Compressed Air
· Membrane air dryer
Medium
Compressed Air
Type
Membrane Air Dryer
Common Failures & Inspection Points
- Membrane fiber degradation from oil contamination
- Pre-filter element saturation
- Flow control orifice blockage
Service: Membrane dryer — zero electricity, no moving parts. Requires oil-free air (<0.01 mg/m³). Replace pre-filter elements regularly.
Spare Parts: Ersatzteile über Beko oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Strengths
- Zero electrical power consumption – operates solely on the pressure of the inlet air
- No rotating components → very low mechanical wear and maintenance
- Compact, lightweight design suitable for limited installation space
- Effective dew‑point reduction to around –40 °C when supplied with oil‑free air
- Simple pre‑filter replacement procedure
Weaknesses
- Highly sensitive to oil contamination; membrane fibers degrade if inlet air exceeds ~0.01 mg/m³ oil content
- Pre‑filter elements must be inspected and replaced regularly to avoid saturation and flow restriction
- Limited maximum airflow compared with refrigerated dryers, making it unsuitable for very high‑demand systems
- Membrane lifespan can be shortened by occasional oil ingress or particulate damage
Decision Guide: Choose if: the vessel has low to moderate compressed‑air demand, wants a zero‑power solution, and can guarantee upstream oil‑free air (e.g., via high‑efficiency filters or oil‑free compressors). Avoid if: the plant requires very high airflow rates, cannot maintain strict oil‑free inlet conditions, or prefers a dryer with higher flow capacity despite power draw.
Use Cases: Commonly installed on offshore supply vessels, platform support ships, small passenger ferries and other craft where compressed air powers tools, instrumentation and safety systems, and where conserving electrical power is a priority.
Domnick Hunter (Parker)
1
PNEUDRI Marine
10-500 Nm³/h
· Compressed Air
· Desiccant air dryer
Medium
Compressed Air
Type
Desiccant Air Dryer
Common Failures & Inspection Points
- Desiccant bed exhaustion
- Switching valve failure
- Purge orifice blockage
- Check valve leakage
Service: Instrument air quality per ISA 7.0.01. Desiccant replacement every 3-5 years. Monitor dew point continuously.
Spare Parts: Ersatzteile über Domnick Hunter (Parker) oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Strengths
- Dual‑bed design provides uninterrupted drying while one bed regenerates.
- Achieves very low dew points (down to –70 °C) suitable for sensitive instrument air systems.
- Integrated dew‑point monitoring simplifies compliance with ISA 7.0.01.
- Robust construction and marine‑grade materials resist corrosion in harsh shipboard environments.
- Desiccant life typically 3–5 years, reducing replacement frequency.
Weaknesses
- Regeneration cycle consumes a portion of the compressed air flow, lowering overall system efficiency.
- Periodic maintenance required for purge orifice and switching valve to prevent blockages.
- Higher upfront cost compared with basic refrigerated dryers.
- Sensitive to large moisture spikes; pre‑filtration may be needed in very humid installations.
Typical Vessels:
TankerBulk CarrierContainer ShipOffshore Supply VesselCruise ShipNaval Auxiliary
Decision Guide: Choose if: you need continuous, high‑purity instrument air with dew points below –40 °C, have limited space and require built‑in monitoring. Avoid if: overall system efficiency is paramount, budget constraints favor cheaper refrigerated dryers, or the installation can tolerate higher dew points.
Use Cases: Provides dry instrument air for fire‑fighting pumps, cargo handling gear, deck machinery control systems, navigation equipment, and any safety‑critical pneumatic devices on board commercial and offshore vessels.