Water Cooled Refrigerated Air Dryers
Industrial water cooled refrigerated air dryers for reliable moisture removal and stable dew point control in large compressed air systems, using cooling water for efficient condenser heat rejection.
Lingyu provides industrial water cooled refrigerated air dryers for efficient moisture removal and stable pressure dew point control in medium and large compressed air systems. Our standard WH Series covers airflow capacities from 10.5 to 160 m³/min (approximately 371 to 5,650 CFM), using cooling water for efficient condenser heat rejection.
For large-flow industrial projects, custom-engineered water cooled refrigerated air dryer systems are available with capacities up to 15,900 CFM, configured according to actual airflow, operating pressure, inlet temperature, cooling-water conditions, required pressure dew point, power supply, and installation requirements.
Water cooled refrigerated air dryers are particularly suitable for facilities with centralized cooling-water systems, high ambient temperatures, limited compressor-room ventilation, or large continuous compressed air demand.
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.
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;
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 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.
Ultra-Low Pressure Drop:The pre-cooler features a newly designed annular tube configuration with approximately three times more tubes than conventional designs. The increased flow area significantly reduces air resistance, resulting in an overall pressure drop of less than 0.1 bar.
Low Dew Point:An optimized integrated 3-in-1 design, combined with a unique water separation system, ensures a consistently low and stable pressure dew point.
Intelligent Control:Equipped with a PLC and touchscreen as standard. The system automatically adjusts the compressor’s refrigeration capacity according to the evaporator load, ensuring optimal and energy-efficient operation. An RS-485 communication interface is also included as standard.
Water cooled refrigerated air dryers remove moisture from compressed air using a refrigeration system with water as the condenser cooling medium.
Compared with air-cooled models, water-cooled dryers do not rely on compressor-room airflow for condenser heat rejection. They are particularly suitable for large compressed air systems, high ambient temperature installations, compressor rooms with limited ventilation, and facilities with centralized cooling-water systems.
Lingyu WH Series water cooled refrigerated air dryers provide airflow capacities from 10.5 to 160 m³/min (approximately 371 to 5,650 CFM) for medium and large industrial compressed air systems.
| Parameter | Specification |
|---|---|
| Airflow capacity | 10.5–160 m³/min |
| Approx. airflow | 371–5,650 CFM |
| Rated inlet pressure | 0.7 MPa |
| Operating pressure | 0.6–1.0 MPa |
| Rated inlet temperature | 50°C |
| Maximum inlet temperature | ≤80°C |
| Pressure dew point | 2–10°C |
| Pressure drop | ≤0.025 MPa |
| Rated ambient temperature | 32°C |
| Ambient operating range | 2–45°C |
| Cooling method | Water-cooled |
For applications beyond the standard WH Series range, custom-engineered water cooled refrigerated air dryer systems are available for project capacities up to 15,900 CFM, as well as special working pressures, materials, and operating conditions.
Hot compressed air is first pre-cooled through a heat exchanger and then passes through the refrigeration evaporator, where its temperature is further reduced.
As the compressed air cools, water vapor condenses into liquid water. The condensate is separated and automatically drained before the dry air is reheated and returned to the downstream compressed air system.
Unlike an air-cooled dryer, heat from the refrigeration condenser is transferred to a cooling-water circuit rather than directly into the compressor room.
A stable cooling-water supply is important for reliable water cooled refrigerated air dryer operation.
For the Lingyu WH Series:
| Cooling Water Parameter | Requirement |
| Cooling-water pressure | 0.2–0.4 MPa |
| Rated cooling-water temperature | ≤32°C |
| Operating water temperature | 2–38°C |
| Cooling-water flow | Model dependent |
Cooling-water flow increases with dryer capacity. The required flow should therefore be checked against the selected model before installation.
Facilities with an existing central cooling-water system or cooling tower are particularly suitable for water-cooled refrigerated dryers.
Select the dryer according to actual airflow and operating conditions rather than compressor capacity alone.
| Selection Parameter | Check |
| Airflow | m³/min or CFM |
| Working pressure | 0.6–1.0 MPa standard range |
| Inlet temperature | Rated 50°C, max. ≤80°C |
| Required PDP | 2–10°C |
| Ambient temperature | 2–45°C |
| Cooling-water temperature | ≤32°C rated |
| Cooling-water pressure | 0.2–0.4 MPa |
| Cooling-water flow | Match selected model |
| Pressure drop | ≤0.025 MPa |
For large compressed air systems, cooling-water capacity should be evaluated together with dryer airflow rather than selecting the dryer based only on compressor CFM.
A water cooled refrigerated air dryer is particularly suitable when:
For installations without cooling water and with adequate ventilation, an air-cooled refrigerated air dryer is generally simpler to install.
| Factor | Air Cooled | Water Cooled |
| Cooling medium | Ambient air | Cooling water |
| Cooling water required | No | Yes |
| Compressor-room ventilation | More important | Less dependent |
| Heat discharged into room | Higher | Lower |
| Large airflow systems | Suitable | Particularly suitable |
| High ambient temperature | More sensitive | More suitable with proper cooling water |
| Central cooling-water facility | Not required | Ideal |
| Installation | Simpler | Requires water piping |
Choose an air cooled refrigerated air dryer when cooling water is unavailable and adequate ventilation can be provided.
Choose a water cooled refrigerated air dryer when handling large airflow, operating in demanding compressor-room conditions, or when a centralized cooling-water system is already available.
The WH Series covers 10.5 to 160 m³/min, approximately 371 to 5,650 CFM.
The WH Series specifies cooling-water pressure of 0.2–0.4 MPa, rated cooling-water temperature of ≤32°C, and an operating water-temperature range of 2–38°C.
The specified pressure drop is ≤0.025 MPa under the applicable operating conditions.
The WH Series has a rated inlet temperature of 50°C and a maximum inlet temperature of ≤80°C.
Water-cooled dryers are particularly suitable for large airflow systems, high ambient temperature installations, compressor rooms with limited ventilation, and facilities that already have centralized cooling water.
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