
Refrigerated Air Dryer: How It Works and Why It Matters
Compressed air is widely used in manufacturing, automotive production, food and beverage plants, electronics, packaging, and many other industrial systems. However, compressed air also carries
Lingyu’s advanced refrigerated air dryers are engineered to provide professional, energy-efficient, and reliable compressed air drying solutions for industrial applications.
By cooling compressed air and condensing water vapor, our refrigerated compressed air dryers effectively remove moisture and protect downstream equipment from corrosion, performance loss, and unexpected failures. With processing capacities of up to 15,900 CFM, our systems are designed to meet a wide range of industrial requirements, ensuring stable operation and enhanced productivity.
Explore our full range of refrigerated air dryers below and request a quote to find the right solution for your compressed air system.

Rated Air Flow
Handles compressed air flow up to 75 CFM, ensuring effective dehumidification.
Air-Cooled System
No water cooling required, simplifying installation and maintenance.
Stable Dew Point
Maintains a consistent 2–10°C (35.6–50°F) pressure dew point for dry, reliable air.
Low Energy Consumption
Optimized refrigeration components minimize power usage while maintaining performance.
Automatic Drain Valve
Continuously removes condensate to prevent water accumulation in the system.
Compact & Durable Design
Space-saving enclosure with powder-coated steel housing ensures long service life.
Easy Operation
Plug-and-play setup with simple control interface and indicator lights.

Compact Capacity Range – Choose from 25, 35, or 50 CFM to match your compressor flow.
Air-Cooled Design – No water connection required; perfect for facilities without cooling water.
Stable Dew Point Control – Maintains 2–10°C (35.6–50°F) dew point for consistent dryness.
Energy Efficient – Equipped with low-power refrigeration systems for cost savings.
Automatic Drain Valve – Discharges moisture automatically.
Plug-and-Play Setup – Quick installation and operation in limited spaces.
Durable Construction – Built with powder-coated steel and corrosion-resistant components.

Rated for 200 CFM: Optimized to handle air flow rates up to 200 CFM, ideal for medium-scale operations.
Air Cooled Condenser: No need for cooling water — suitable for flexible installation in any plant environment.
Stable Dew Point: Maintains a consistent pressure dew point between 2–10°C (35.6–50°F).
Efficient Heat Exchanger: Maximizes moisture separation while minimizing pressure loss.
Energy Efficient: Designed to reduce power consumption with high-performance components.
Automatic Drain System: Prevents water accumulation and extends system life.
Compact Design: Space-saving footprint for easy integration into existing systems.
The 200 CFM refrigerated air dryer (air cooled) combines durability and performance to meet the demands of modern compressed air systems.

High Volume Capacity: Supports compressed air flow rates up to 1340 SCFM, ideal for large-scale operations.
Water Cooled System: Efficient heat removal through water circulation, reducing electrical load and improving cooling performance in hot environments.
Stable Dew Point Performance: Delivers consistent pressure dew point between 2–10°C (35.6–50°F).
Energy Efficient: Lower power consumption than air-cooled units in environments with available cooling water.
Compact Design: Smaller footprint compared to equivalent air-cooled models.
Automatic Drain System: Timely removal of condensate to prevent internal water accumulation.
Heavy-Duty Construction: Industrial-grade steel cabinet with rust-resistant finish.
The 1340 SCFM refrigerated air dryer (water cooled) is built for intensive-duty cycles and stable long-term operation.

High Processing Capacity: Handles compressed air volumes up to 1130 SCFM, ideal for large-scale systems.
Air Cooled System: Eliminates the need for water cooling infrastructure, reducing installation and operational costs.
Stable Dew Point: Maintains a reliable pressure dew point between 2–10°C (35.6–50°F), preventing condensation and corrosion.
Efficient Refrigeration Circuit: Equipped with a durable scroll or rotary compressor for low energy consumption.
User-Friendly Interface: Real-time monitoring, alarms for high temperature, and system status indicators.
Automatic Condensate Drain: Ensures consistent moisture discharge without manual intervention.
The 1130 SCFM refrigerated air dryer (air cooled) is engineered for performance, reliability, and long-term value.

Capacity: Precisely rated for 100 CFM, ensuring optimal moisture removal for consistent compressed air quality.
Air Cooled Design: No need for water cooling infrastructure — plug and play installation.
Energy Efficient: Incorporates a high-efficiency refrigeration compressor and heat exchanger to reduce power consumption.
Compact & Durable: Space-saving footprint with a heavy-duty steel casing for long-term durability.
Low Dew Point: Delivers a stable pressure dew point as low as 2–10°C (35.6–50°F).
Automatic Drain Valve: Prevents liquid buildup and minimizes maintenance time.
Simple Controls: User-friendly interface with operating indicators and safety alarms.

High Stability
Key heat exchangers are manufactured in-house. Refrigeration compressors are mainly sourced from well-known brands such as Panasonic, Copeland, Danfoss, and Hanbell, together with high-quality refrigeration components.
High-Efficiency Moisture Separation
Equipped with an independently designed and continuously upgraded water separation system, ensuring reliable and efficient moisture removal.
Wide Operating Range
Hydrophilic aluminum foil is used, while heat exchangers and pre-coolers are standard across the entire series, ensuring reliable operation even under demanding conditions.
Intelligent Dual-Compressor Design
Models from 5 to 180 m³/min feature a 1+1 dual-compressor configuration. The second compressor automatically starts or stops according to system load, improving energy efficiency and adapting to applications with significant fluctuations in air demand.
High Customization Capability
Custom colors and optional PLC control are available. Dry contacts, Modbus communication, IoT connectivity, and other functions can also be customized to meet specific customer requirements.

High Stability:Key heat exchangers are manufactured in-house. Refrigeration compressors are mainly sourced from well-known brands such as Panasonic, Copeland, Danfoss, and Hanbell, together with high-quality refrigeration components.
High-Efficiency Moisture Separation:Equipped with an independently designed and continuously upgraded water separation system, ensuring reliable and efficient moisture removal.
Wide Operating Range:Hydrophilic aluminum foil is used, while heat exchangers and pre-coolers are standard across the entire series, ensuring reliable operation even under demanding conditions.
Intelligent Dual-Compressor Design:Models from 5 to 180 m³/min feature a 1+1 dual-compressor configuration. The second compressor automatically starts or stops according to system load, improving energy efficiency and adapting to applications with significant fluctuations in air demand.
High Customization Capability:Custom colors and optional PLC control are available. Dry contacts, Modbus communication, IoT connectivity, and other functions can also be customized to meet specific customer requirements.

High Stability:Key heat exchangers are manufactured in-house. Refrigeration compressors are mainly sourced from well-known brands such as Panasonic, Copeland, Danfoss, and Hanbell, together with high-quality refrigeration components.
High-Efficiency Moisture Separation:Equipped with an independently designed and continuously upgraded water separation system, ensuring reliable and efficient moisture removal.
Wide Operating Range:Hydrophilic aluminum foil is used, while heat exchangers and pre-coolers are standard across the entire series, ensuring reliable operation even under demanding conditions.
Intelligent Dual-Compressor Design:Models from 5 to 180 m³/min feature a 1+1 dual-compressor configuration. The second compressor automatically starts or stops according to system load, improving energy efficiency and adapting to applications with significant fluctuations in air demand.
High Customization Capability:Custom colors and optional PLC control are available. Dry contacts, Modbus communication, IoT connectivity, and other functions can also be customized to meet specific customer requirements.

The air is pure, no secondary pollution, integrated skid-mounted design, compact structure, stable dew point, remarkable water removal effect.
Stainless steel plate heat exchanger with high heat exchange efficiency and compact structure.
Independent stainless steel steam-water separator with high water separation efficiency, timely separates condensed water and other impurities from compressed air and discharges them out of the machine.
The whole machine is made of stainless steel or aluminum alloy, which will not rust and prevent secondary contamination of compressed air.
Single chip intelligent control, real-time display of evaporation temperature, including over-temperature alarm, electrical fault, high pressure alarm, low pressure alarm and other functions.

The compressed air first enters the pre-cooler for initial cooling, and then passes through the pre-cooling/reheating section of the high-performance 3-in-1 plate heat exchanger for further cooling. It subsequently enters the evaporator section, where it is rapidly cooled and the condensed moisture is separated.The treated low-temperature compressed air then returns to the pre-cooling/reheating heat exchanger, where it exchanges heat with the incoming hot compressed air. This reheats the dry compressed air before it is discharged from the dryer.The refrigeration system precisely adjusts the compressor speed according to changes in system load. The operating frequency is automatically regulated to match the actual air treatment demand, ensuring stable and energy-efficient operation.

Low energy consumption: the three-in-one plate heat exchanger is adopted, and the whole machine can save 20~30% of energy consumption;
Low pressure drop: the pressure loss of the whole machine is less than 0.015MPa, which is lower than the national standard;
Low dew point: under standard working conditions, the pressure dew point is as low as 2~10℃, and the electronic bypass valve is adopted, making the system more stable;
Environmentally friendly and durable: the whole series adopts environmentally friendly refrigerant R410a/R407C, which meets international environmental standards and has a maximum pressure of 1.6MPa;
A refrigerated air dryer removes water vapor from compressed air by cooling the air until moisture condenses into liquid water. The condensate is then separated and automatically drained before the dry compressed air returns to the downstream air system.
Refrigerated dryers are commonly used where a stable, moderate pressure dew point is sufficient. They are widely applied in manufacturing, automotive production, CNC machining, pneumatic equipment, packaging, painting, textile production, and centralized factory compressed air systems.
Lingyu offers both air-cooled and water-cooled refrigerated air dryers, with capacities from 1.5 to 160 m³/min (approximately 53 to 5,650 CFM) across the AH and WH Series.
Air-cooled refrigerated air dryers use ambient air to remove heat from the refrigeration circuit and do not require an external cooling-water system.
The Lingyu AH Series covers airflow capacities from 1.5 to 110 m³/min (approximately 53 to 3,884 CFM) and is suitable for small to large industrial compressed air systems.
Air-cooled models are typically selected when:
Water-cooled refrigerated air dryers use an external water circuit to remove heat from the refrigeration condenser.
The Lingyu WH Series covers airflow capacities from 10.5 to 160 m³/min (approximately 371 to 5,650 CFM), making it particularly suitable for large centralized compressed air systems.
Water-cooled models are typically selected when:
The correct refrigerated air dryer should be selected according to actual airflow and operating conditions rather than compressor capacity alone.
| Selection Parameter | Air-Cooled AH Series | Water-Cooled WH Series |
|---|---|---|
| Airflow capacity | 1.5–110 m³/min | 10.5–160 m³/min |
| Approx. CFM | 53–3,884 CFM | 371–5,650 CFM |
| Rated inlet pressure | 0.7 MPa | 0.7 MPa |
| Operating pressure | 0.6–1.0 MPa | 0.6–1.0 MPa |
| Rated inlet temperature | 50°C | 50°C |
| Maximum inlet temperature | ≤80°C | ≤80°C |
| Pressure dew point | 2–10°C | 2–10°C |
| Pressure drop | ≤0.025 MPa | ≤0.025 MPa |
| Rated ambient temperature | 32°C | 32°C |
| Ambient operating range | 2–45°C | 2–45°C |
| Cooling method | Ambient air | Cooling water |
| Cooling-water pressure | — | 0.2–0.4 MPa |
| Rated cooling-water temperature | — | ≤32°C |
| Cooling-water operating range | — | 2–38°C |
For capacities above the standard range, higher operating pressures, special materials, or other operating conditions, customized configurations are available.
| Operating Condition | Recommended Configuration |
| General factory compressed air | Air-Cooled |
| No cooling-water system | Air-Cooled |
| Simple installation required | Air-Cooled |
| Small to medium airflow | Air-Cooled |
| Large airflow / centralized air station | Water-Cooled |
| Central cooling-water system available | Water-Cooled |
| Limited compressor-room ventilation | Water-Cooled |
| High compressor-room heat load | Water-Cooled |
| Inlet temperature up to 80°C | AH or WH High-Inlet-Temperature Series |
| PDP significantly below refrigerated dryer range | Desiccant Air Dryer |
Actual dryer capacity can change when working pressure, inlet temperature, or ambient conditions differ from the rated conditions. These operating conditions should be checked before final model selection.
| Factor | Air-Cooled | Water-Cooled |
| Cooling medium | Ambient air | Cooling water |
| Cooling water required | No | Yes |
| Standard capacity range | 1.5–110 m³/min | 10.5–160 m³/min |
| Compressor-room ventilation | More important | Less dependent |
| Heat rejection into room | Higher | Lower |
| Large airflow systems | Suitable | Particularly suitable |
| Central cooling-water system | Not required | Ideal |
| Installation | Simpler | Requires water piping |
For most industrial installations with adequate ventilation, an air-cooled refrigerated dryer provides the simpler solution.
For large centralized compressed air systems or facilities with existing cooling water and limited heat dissipation, a water-cooled model is generally more suitable.
Lingyu refrigerated air dryers are suitable for:
Applications requiring substantially lower pressure dew points should consider a desiccant air dryer.
Application: Industrial compressed air system
Cooling Method: Air-Cooled
Available Capacity: 1.5–110 m³/min
Inlet Temperature: Rated 50°C, maximum ≤80°C
Pressure Dew Point: 2–10°C
Suitable for factories where cooling water is unavailable and adequate compressor-room ventilation can be provided.
Application: Large centralized compressed air system
Cooling Method: Water-Cooled
Available Capacity: 10.5–160 m³/min
Inlet Temperature: Rated 50°C, maximum ≤80°C
Pressure Dew Point: 2–10°C
Suitable for large airflow installations with centralized cooling water or limited compressor-room heat dissipation.
Refrigerated air dryers are commonly used for industrial applications requiring a moderate pressure dew point. Actual performance depends on dryer design and operating conditions. Refer to the specifications of each Lingyu model for rated pressure dew point.
Dryer capacity should be selected according to actual airflow, operating pressure, inlet temperature, ambient temperature, and required dew point. Correction factors may be required when operating conditions differ from rated conditions.
Air-cooled models are generally simpler to install and suitable for most industrial applications. Water-cooled models are often preferred for large airflow systems or installations with limited ventilation.
Compressor airflow is the starting point, but it should not be the only selection parameter. Actual operating conditions can significantly affect dryer capacity.
Refrigerated dryers are typically used for general industrial compressed air, while desiccant dryers are selected when significantly lower pressure dew points are required.
Send us your:Airflow · Working Pressure · Inlet Temperature · Ambient Temperature · Required Dew Point · Voltage/Frequency
Our engineers will recommend a suitable refrigerated air dryer model for your compressed air system.
No. 22-1 to 22-3, Jinzhu Road, Heting Town, Heshan City, Jiangmen City, Guangdong Province
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