Linghein HDF Series Refrigerated Air Dryers
Brand & Company Backing
Linghein (Shanghai) Gas Technology Co., Ltd. — wholly owned subsidiary of Atlas Copco Group (since 2011), with advanced screw compressor technology and mature R&D
Core Technologies 4 Pillars
Energy Efficiency
optimized cooling cycles cut power use without compromising performance
R410A Low GWP Refrigerant
high cooling efficiency with low global warming potential; supports green/sustainability goals
Smart IoT Monitoring
real-time parameter tracking, adaptive control, data analytics, remote oversight, and predictive maintenance
Low Dew Point Technology
consistent moisture removal that protects downstream equipment and prevents corrosion/contamination
Key Benefits
Lower energy consumption and reduced operational costs
Less downtime through predictive maintenance
Longer equipment life and stable air quality
Smaller environmental footprint — aligned with sustainability targets
Applications
Food processing, pharmaceuticals, automotive, and other precision industries
Suitable for smart factory ecosystems via IoT integration
Any environment where clean, dry compressed air is critical to quality and equipment longevity
GASFlow Refrigerated Air Dryer — High-Performance Refrigerated Air Dryer for 1–75 m3/min P. D. P 3–10°C
GASFlow presents an advanced refrigerated air dryer designed for industrial compressed air systems, tailored to flows from 1 to 75 m3/min and delivering a reliable pressure dew point (P.D.P.) range of 3–10°C. This refrigerated air dryer blends precision thermal control, robust mechanical design, and efficient refrigeration cycles to provide consistently dry, clean compressed air for a wide range of industrial processes. As part of GASFlow’s commitment to energy-efficient compressed air solutions and industrial gas treatment expertise, this refrigerated air dryer is engineered to minimize operational cost while maximizing uptime and air quality
Key Features and Functional Overview
- Efficient Refrigeration Core: The refrigerated air dryer uses a high-performance refrigeration system optimized for stability and rapid heat exchange. The refrigeration core features corrosion-resistant materials, a multi-stage evaporator design, and precision thermostatic control to maintain a stable P.D.P. between 3–10°C under varying operating loads
- Wide Flow Range: Engineered to cover a broad capacity from 1 to 75 m3/min, this refrigerated air dryer can be deployed in small localized booster systems or large central compressed air plants. Modular internal configurations allow GASFlow to match dryer sizing to specific plant requirements for optimal energy-efficient compressed air performance
- Optimized Heat Exchange: The dryer integrates a compact plate-fin heat exchanger and an advanced air-to-refrigerant circuit that reduces pressure drop and improves thermal transfer. This arrangement enhances moisture condensation and separation efficiency, reducing downstream contamination risks and improving overall industrial gas treatment performance
- Robust Moisture Separation: After refrigeration-induced condensation, the refrigerated air dryer employs high-efficiency separators and coalescing stages that rapidly remove condensate. Reliable draining systems with intelligent autos drains or optional zero-loss drains help prevent liquid carryover while minimizing compressed air loss, contributing to energy-efficient compressed air usage
- Intelligent Control and Monitoring: An integrated microprocessor control provides real-time monitoring of inlet/outlet temperatures, pressure dew point, refrigerant status, and system diagnostics. The control unit supports remote communication and integration with plant SCADA systems, enabling proactive maintenance, operational logging, and energy usage optimization for industrial gas treatment systems
- Durable Construction: With an enclosure and component selection focused on industrial environments, the refrigerated air dryer is built for longevity. Anti-corrosion coatings, vibration-resistant mounting, and heavy-duty fans extend service life even in harsh conditions. GASFlow’s ISO-certified manufacturing ensures consistent quality across every unit
- Low Noise, Low Maintenance: Acoustic optimization and straightforward service access points reduce noise footprint and simplify routine maintenance. Easy-to-replace filters, accessible evaporator coils, and clear diagnostics minimize downtime and lifecycle maintenance costs
Applications and Use Cases
This refrigerated air dryer is ideal for a broad spectrum of applications requiring clean, dry compressed air:
- General manufacturing lines where product quality depends on dry air to prevent corrosion, contamination, or process faults
- Pneumatic control systems and instrumentation where stable low moisture content enhances reliability and accuracy
- Food and beverage processing, where hygienic, dry compressed air is essential for packaging, bottling, and process control
- Energy and utility sectors relying on compressed air for instrumentation and maintenance tasks across a distributed infrastructure
Innovations and Technical Advantages
GASFlow’s refrigerated air dryer incorporates several innovations that set it apart in industrial gas treatment and energy-efficient compressed air management:
- Adaptive Thermal Management: The dryer’s control algorithms dynamically adjust refrigerant flow and fan speed to match load conditions. By aligning cooling capacity to instantaneous demand, the system reduces unnecessary energy use, achieving superior energy-efficient compressed air performance across part-load conditions
- Low Pressure Drop Architecture: Careful internal flow-path engineering minimizes pressure drop through heat exchangers and separators. Lower pressure drop translates to reduced compressor energy consumption for the same delivered flow, reinforcing the dryer’s role in energy-efficient compressed air systems
- High Condensation Efficiency: Advanced refrigeration surfaces and enhanced wetting characteristics improve condensate formation and capture. This yields lower residual moisture and a more consistent P.D.P. that safeguards downstream processes as part of holistic industrial gas treatment strategies
- Serviceability and Lifecycle Support: GASFlow’s global technical support and local service network ensure rapid spare parts availability, preventive maintenance programs, and lifecycle upgrades. Embedded diagnostics reduce troubleshooting time and help sustain optimal energy-efficient compressed air operation
Performance and Operational Benefits
- Consistent P.D.P.: Maintaining 3–10°C P.D.P. stabilizes downstream air properties and prevents condensation in lines and end-use equipment, protecting sensitive instrumentation and improving product quality
Why Choose GASFlow Refrigerated Air Dryer
As an extension of GASFlow’s portfolio of energy-efficient compressed air solutions and industrial gas treatment expertise, this refrigerated air dryer is designed to deliver dependable low dew point air systems to meet demanding industrial needs. Combining adaptive refrigeration, low pressure drop engineering, robust moisture separation, and integrated controls
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