-70°C Dew Point
Industrial Desiccant Dehumidifier
Engineered rotor system handling extreme low dew point requirements for precision battery and chemical processing.
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Top-Tier Fleet
Precision Humidity Engineering: Core Product Matrix (Tier 1)
Engineered to deliver continuous, energy-efficient moisture management for mission-critical gigafactories, cleanrooms, and chemical processing complexes.
-70°C Dew Point
Full EPC Scope
Turnkey Dry Room System
Complete structural envelope, tight psychrometric air handling, low leakage doors, and continuous digital verification.
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Recovery ≥99%
NMP Solvent Recovery System
Patented gas condensation recovery for electrode coating drying loops, drastically slashing operating solvent costs.
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Deep-Cool + RTO
VOC Abatement System
High-efficiency regenerative thermal oxidizers (RTO) combined with pre-condensation for multi-component exhaust.
Abatement Details
Heavy-Duty AHU
Modular Industrial AHU Dehumidifier
Custom tailored air volumes featuring multi-stage filtration, heat recovery loops, and PLC network integration.
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Ultra Low Dew Point
Battery Cell Assembly Dry Enclosure
Engineered clean environment maintaining dew points down to -50°C to -60°C across high-traffic manufacturing floors.
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Closed Circulation
Electrode Coater Recovery Plant
Dedicated continuous solvent condensation systems designed for automated roll-to-roll electrode production lines.
Exhaust Specs
High COP
Commercial Refrigerative Dehumidifier
Cost-effective ambient moisture extraction units serving as high-efficiency pre-cooling stages or warehouse protection.
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Controllable Supply Air Dew Point
≥99%
NMP Solvent Recovery Rate
30%+
China Desiccant Dehumidifier Share
200+
Units Assembled Per Month
74+
R&D Engineers & PhD Specialists
Global Manufacturing Leadership
Why China's Air Dehumidification Engineering Dominates Global Cleantech
Accelerating gigafactory infrastructure through massive supply-chain density, proprietary desiccant rotor chemistry, and rigorous military-grade quality standards.
Aggressive Supply Chain Agility
Hangzhou DryAir capitalizes on China's localized high-precision manufacturing belt. From specialized silica gel / molecular sieve composite rotors to ASME-certified heat exchangers, our streamlined supply chain cuts engineering lead times by 40% compared to Western counterparts while maintaining lower unit CAPEX.
Battle-Tested at Gigafactory Scale
As the primary dehumidification partner for CATL, BYD, EVE Energy, SVOLT, and Northvolt, our hardware and airflow algorithms have been subjected to continuous 24/7 operating stress in the world's highest-volume lithium battery manufacturing facilities, where downtime costs exceed tens of thousands of dollars per hour.
Military & Aerospace Validation (GJB)
Beyond commercial CE, UL, CSA, and EAC certifications, DryAir operates certified GJB national military standard quality management systems. This ensures airtight cabinet casing, thermal-bridge-free construction, and airtight seals engineered to withstand harsh maritime, defense, and aerospace operational environments.
Macro Sector Execution
Engineered Turnkey Solutions Across Critical Industrial Verticals
Process-critical humidity control sized precisely around latent chemical vulnerability, cleanroom pressure dynamics, and environmental compliance.
Lithium-Ion & Solid-State Batteries
Electrolyte salts like LiPF6 decompose violently upon contact with ambient vapor, generating corrosive hydrofluoric acid (HF). DryAir designs dry room infrastructure maintaining stable dew points from -40°C down to -70°C across coating, winding, cell assembly, and electrolyte injection cleanrooms.
Explore Turnkey Battery Dry Rooms →Pharma & Biological Processing
Hygroscopic pharmaceutical powders, effervescent tablets, soft gelatin encapsulation lines, and lyophilization loading zones require strict RH control (10% to 25% RH) to avoid product clumping, caking, and bacterial colonization, adhering strictly to global cGMP standards.
Pharma Grade Air Solutions →Green Solvent Recovery & VOC Mitigation
Lithium electrode slurry preparation utilizes large volumes of N-Methyl-2-pyrrolidone (NMP). Our closed-loop cooling condensation and regenerative thermal oxidizers (RTO) achieve solvent recovery rates exceeding 99% while mitigating exhaust gas VOCs down to single-digit mg/m³ thresholds.
NMP Closed-Loop Technology →
Procurement Specification Protocol
Industrial Dew Point & Equipment Selection Reference Guide
A rigorous engineering benchmark for plant managers, EPC contractors, and HVAC consulting engineers defining tender specs.
| Manufacturing Application | Target Environmental Condition | Primary Failure Vector Prevented | Recommended System Configuration |
|---|---|---|---|
| Lithium Cell Assembly & Electrolyte Filling | -40°C to -60°C Dew Point | Hydrofluoric acid (HF) generation, capacity fading, safety hazards | Custom Double-Rotor Desiccant AHU + Modular Dry Room |
| Solid-State & Lithium-Metal Anode R&D | Down to -70°C Dew Point | Spontaneous alkali oxidation, active material surface degradation | Deep Low-Dew-Point DHU Desiccant Dehumidifier |
| Electrode Coater Exhaust Gas Recovery | ≥99% Solvent Condensation | Expensive solvent loss, toxic atmospheric VOC emissions | ZJRH Closed-Loop Heat Recovery NMP System |
| Effervescent Tablets & Softgel Encapsulation | 15% – 25% Relative Humidity | Powder clumping, capsule wall deformation, microbiological growth | Sanitary Stainless Pharmaceutical Desiccant Unit |
| Military Avionics & Ordinance Storage | ≤35% – 40% Relative Humidity | Electrochemical corrosion, mold formation, explosive shelf deterioration | GJB-Compliant Low Dew Point Storage Dehumidifier |
| Raw Material Bulk Warehouses | 45% – 60% Relative Humidity | Condensation sweating, secondary packaging collapse, rust formation | Refrigerative Commercial Dehumidifier System |
Execution Framework
End-to-End Turnkey Delivery: From Design to Dew Point Validation
Eliminating multi-vendor interface friction through full lifecycle ownership of design, fabrication, cleanroom erection, and validation.
01. Process Moisture Audit
Thermal envelope calculation, personnel latent load estimation, door opening infiltration analysis, and baseline CFM sizing.
02. Psychrometric Engineering
Rotor face velocity matching, multi-stage refrigeration circuit balance, and waste heat regeneration loop optimization.
03. Precision Manufacturing
In-house fabrication, thermal break casing assembly, and comprehensive FAT testing inside Hangzhou DryAir's environmental test lab.
04. On-Site SAT & Certification
Turnkey on-site installation, cleanroom envelope sealing, dew point sensor calibration, and SAT sign-off with customer engineering.
Field Knowledge
Engineering Insights From The Field
Technical whitepapers authored by Hangzhou DryAir's application engineers solving real-world production floor challenges.
How Does an Oil Gas Condensation Recovery System Work
A comprehensive examination of progressive multi-stage deep cooling condensing volatile hydrocarbons from chemical off-gas loops before atmospheric vent release.
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Maintaining Stable NMP Recovery Under 24/7 Gigafactory Loads
Key psychrometric balancing techniques for electrode coater exhaust streams. Learn how to prevent condensation fouling and maintain recovery efficiency over 99%.
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Preventing Moisture Failures in Solid Dose Pharmaceutical Plants
Analyzing latent load infiltration vectors in high-speed tablet pressing and capsule filling suites, with practical air flow distribution schematics.
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Procurement Directives
Frequently Asked Questions: International Procurement & Engineering
Authoritative answers addressing specification, export certification, lead times, and global field service support.
What makes Hangzhou DryAir's low dew point capability achieve -70°C consistently?
DryAir systems employ a proprietary high-capacity silica gel and synthetic molecular sieve honeycomb desiccant rotor matrix. Our dual-rotor series dehumidification setups utilize staged pre-cooling and advanced heat wheel energy recovery, driving supply air moisture content below 0.002 g/kg of dry air (equivalent to -70°C dew point) even under tropical outdoor ambient wet-bulb conditions.
Does Hangzhou DryAir provide international turnkey dry room project execution?
Yes. We provide complete Turnkey EPC execution for dry room systems internationally. Our engineering team oversees thermal envelope panel design, airlock design, HVAC ducting, desiccant machinery installation, and final dew point validation. We have delivered mission-critical facilities for global battery titans including Tesla, Northvolt, and TTI across Europe, North America, and Southeast Asia.
Which international certifications and design standards are supported for export machinery?
Our equipment is fully certified according to market-specific compliance frameworks, including European CE directives (Machinery, Low Voltage, EMC), North American UL and CSA electrical and pressure standards, ASME code compliance for pressure vessels, and EAC certification for the Eurasian Customs Union. Furthermore, DryAir operates an ISO 9001 quality management framework alongside GJB national military manufacturing standards.
How does the NMP recovery system achieve over 99% solvent recovery efficiency?
The DryAir ZJRH series NMP Recovery System leverages a closed-loop multi-stage condensation process. The high-temperature exhaust gas from the lithium battery electrode drying oven is routed through a series of counterflow air-to-air heat exchangers and chilled-water cooling coils, precipitating N-Methyl-2-pyrrolidone solvent out of vapor phase with recovery rates reliably exceeding 99%, keeping clean air exhaust well within environmental threshold limits.
What after-sales maintenance and commissioning support is provided overseas?
We offer tiered service support programs, including remote 24/7 PLC diagnostic connection, on-site supervisory commissioning by veteran field engineers, local regional spare parts inventory dispatch, and an optional 2-Year Extended Overseas Comprehensive Service Agreement covering routine rotor maintenance, sensor calibration, and thermal efficiency audits.
Global Portfolio Fleet
Complete Engineered Catalog: Dehumidifiers & Recovery Systems (Tier 2)
Explore our extended equipment line designed for precision environmental control, air abatement, and low dew point management.
Molecular Sieve
DHU Series Ultra-Dry Dehumidifier
Designed for battery research institutions, specialty labs, and precision defense production cleanrooms.
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Airtight Build
Turn-key Lithium Battery Dry Room
Custom structural sandwich panels engineered with high R-value insulation and hermetic caulking systems.
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High ROI Plant
Integrated NMP Recovery Plant
Continuous solvent distillation and recovery skid featuring automated liquid level and purity sensors.
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Thermal Clean
Regenerative Thermal Oxidizer (RTO)
Destroys harmful organic volatiles with thermal efficiency exceeding 95% while reclaiming process heat.
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ISO & GJB Certified
Modular Process Dehumidification Skid
Skid-mounted air conditioning and low dew point desiccant packages pre-piped for rapid plug-and-play installation.
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Military Grade
Defense & Aerospace Storage Air Unit
Heavy-duty corrosion-resistant desiccant units built to GJB military specs for long-term tactical asset readiness.
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Sub-Zero Dew Point
Semiconductor Cleanroom Dehumidifier
Ultra-clean, particle-free dehumidified air supply designed for wafer fabrication and microelectronic manufacturing.
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Dual Refrigeration
Commercial Refrigerative Dehumidifier
High-capacity mechanical refrigeration systems for industrial warehouses, swimming complexes, and cold chains.
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