-70°C Dew Point
Featured Product Suite
High-Efficiency Industrial Dehumidifier Machines & Core Systems
Engineered for continuous heavy-duty industrial environmental control, delivering guaranteed psychrometric performance and certified compliance.
-70°C Dew Point
Turnkey EPC
≥99% Efficiency
RTO Integration
Pre-Cooling
Gigafactory Spec
Heat Recovery
Skid-Mounted
Industry White Paper & Technical Synthesis
Precision Humidity Engineering: The Foundation of Modern Advanced Manufacturing
In high-tech industrial processes, ambient moisture is an active contaminant. In modern gigafactory-scale lithium-ion battery manufacturing, ambient water molecules catalyze harmful chemical reactions with lithium hexafluorophosphate (LiPF6) within electrolytes, producing corrosive and toxic hydrofluoric acid (HF). This degradation mechanism impairs battery cycle life, creates catastrophic thermal runaway risks, and slashes manufacturing yields. Achieving a verifiable, constant supply air dew point of -40°C to -70°C is an indispensable requirement for cell assembly, winding, and electrolyte filling.
Hangzhou DryAir Treatment Co., Ltd., founded in 2010 in Hangzhou, Zhejiang, has established itself as an authoritative leader in low-dew-point air engineering. Leveraging proprietary rotary desiccant wheel matrices, closed-loop thermal recovery, and smart psychrometric control algorithms, DryAir delivers industrial dehumidifier machine systems capable of meeting the stringent requirements of leading global enterprises such as Tesla, Northvolt, CATL, ATL, BYD, EVE Energy, Farasis, Envision, SVOLT, and TTI.
Technology Roadmap & AI Integration
The industrial dehumidification sector is rapidly transitioning beyond fixed-capacity systems. DryAir’s R&D roadmap integrates predictive AI psychrometric modeling, multi-stage zeolite-molecular sieve rotors, and variable-frequency regenerative heat exchangers. By dynamically balancing outdoor enthalpy shifts with indoor human latent loads, energy consumption during regeneration cycles is minimized without sacrificing dew point stability.
China Factory 4.0: Supply Chain Resilience
Operating a modernized manufacturing complex in the Qingshan Industrial Park of Hangzhou, DryAir outputs over 200 heavy-duty units monthly. With comprehensive vertical integration—from CNC sheet metal laser fabrication and anti-thermal bridge profile extrusions to automated PLC wiring and certified in-house psychrometric testing chambers—DryAir delivers 40-50% faster lead times compared to Western OEMs, providing mission-critical resilience for rapid gigafactory buildouts.
Global Compliance & Certifications
Exporting across North America, Europe, Southeast Asia, and the EAEU, DryAir systems comply with CE Machinery & Low Voltage Directives, UL 1995/UL 60335 electrical codes, CSA C22.2 standards, ASME pressure vessel codes, and EAC certification. Quality assurance operates under strict ISO 9001 and the GJB national military standard, ensuring audited reliability on mission-critical manufacturing floors.
Audited Production Capacity
DryAir Global Engineering Dashboard
Empirical proof of manufacturing scale, technical depth, and tier-one customer adoption.
-70°C
Min Controllable DP
≥99%
NMP Solvent Recovery
30%+
China Market Share
200+
Monthly Unit Output
74
Engineers & Specialists
Cross-Sector Solutions
Engineered Dew Point Control for Specialized Industries
Moisture sensitivity varies across production environments. Systems are tailored around product chemical vulnerabilities and latent plant loads.
Lithium-Ion & Solid State Batteries
Controls relative humidity to near-zero levels (-40°C to -70°C dew point) across cathode/anode mixing, winding, cell assembly, and electrolyte injection chambers.
Pharmaceutical & Biotechnology
Prevents agglomeration, mold formation, and degradation of effervescent tablets, gelatin capsules, dry powders, and diagnostics under cleanroom cGMP criteria.
Aerospace & Defense Facilities
GJB standard-certified climate protection safeguarding solid rocket propellants, guidance electronics, munitions vaults, and aircraft avionics from oxidation.
Chemical & Petroleum Storage
Low-temperature gas condensation units and regenerative thermal oxidizers (RTO) capturing VOC vapors, oil gas, and hazardous solvent exhausts during loading.
Semiconductor & Precision Optics
Eliminates microscopic condensation and photoresist crystallization during photolithography, wafer packaging, and high-precision optical laser assembly.
Psychrometric Benchmark
Dew Point Selection & System Configuration Matrix
Reference data for HVAC specifying engineers, facility managers, and procurement officers.
| Manufacturing Process / Space | Required Humidity Target | Critical Risk Prevented | Recommended System Architecture |
|---|---|---|---|
| Lithium Battery Cell Assembly & Filling | -40°C to -60°C DP | HF Acid Formation, Delamination | Turn-key Dry Room System |
| Solid-State & Lithium-Metal R&D | -60°C to -70°C DP | Severe Alkali Metal Oxidation | DHU Desiccant Dehumidifier |
| Cathode Electrode Coater Exhaust | ≥99% Solvent Recovery | VOC Pollution & Solvent Waste | ZJRH NMP Recovery System |
| Pharmaceutical Powder Packaging & Tableting | 10% to 25% RH | Caking, Microbial Growth, Packaging Leak | Industrial Desiccant Wheel Unit |
| Military Avionics & Ordnance Depots | ≤35% to 40% RH | Galvanic Corrosion, Propellant Decay | GJB Defense-Grade Dehumidifier |
| Raw Material Storage & Pre-Treatment | 45% to 60% RH | Condensation, Mold, Water Ingress | Refrigerative Dehumidifier |
| Petrochemical Fuel Storage & Tank Loading | Tailgas Environmental Limits | Combustible Hydrocarbon Emissions | VOC Deep-Cooling & RTO Unit |
Comprehensive Lifecycle Management
End-to-End Turnkey Delivery & Overseas SLA Support
A structured 5-phase engineering protocol guarantees on-spec handover and long-term uptime across international project sites.
01. Process Consulting
Thermal and moisture load calculations, air exchange simulation, door opening infiltration assessments, and target dew-point definitions.
02. System Engineering
Psychrometric chart modeling, 3D BIM duct routing, energy recovery balancing, and electrical schematic design conforming to national codes.
03. Precision Manufacturing
In-house CNC sheet metal stamping, anti-leak insulated casing assembly, and comprehensive factory acceptance testing (FAT) before shipment.
04. On-Site Erection
Dispatch of certified HVAC commissioning engineers, cleanroom enclosure installation, sensor calibration, and SAT verification.
05. Overseas Service Plan
Optional 2-year extended warranty, IoT remote diagnostics, regional spare parts hubs, and rapid technician dispatch for total peace of mind.
Engineering Knowledge Base
Technical Insights From Field Commissioning Engineers
Real-world engineering analyses to assist system integrators and plant HVAC teams in optimizing system performance and energy efficiency.
How Does an Oil Gas Condensation Recovery System Work?
Examines how multi-stage chilling, refrigeration condensation, and selective membrane polishing safely recapture hydrocarbon fumes at storage terminals.
Read Full Analysis
Maintaining Stable NMP Recovery Under 24/7 Production
Key strategies for managing temperature differentials, preventing heat exchanger scaling, and ensuring ≥99% solvent recovery stability during continuous cathode coating.
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Mitigating Moisture Risks in Pharmaceutical Processing
How precise relative humidity control prevents powder caking, stabilizes active pharmaceutical ingredients (APIs), and prevents packaging seal failures in GMP cleanrooms.
Read Full Analysis
Technical & Procurement FAQ
Frequently Asked Questions by Global Buyers
In-depth responses covering performance validation, project lead times, shipping logistics, and compliance standards.
What is the lowest supply air dew point DryAir desiccant dehumidifiers can achieve?
DryAir rotary desiccant dehumidification systems achieve a stable minimum supply air dew point of -70°C (equivalent to less than 0.0033 g/kg moisture content). This performance envelope is suitable for lithium metal battery processing, solid-state electrolyte development, and sensitive semiconductor production.
Can DryAir deliver complete turnkey battery dry rooms outside China?
Yes. DryAir provides complete turnkey dry room delivery internationally. This covers pre-sales psychrometric calculation, architectural enclosure design, insulated panel manufacturing, HVAC air handling unit integration, and on-site supervisor dispatch for installation and dew-point verification. We have successfully completed projects for global clients including Tesla, Northvolt, and TTI.
Which international safety and electrical certifications are supported?
Depending on destination market requirements, DryAir equipment can be configured and certified to CE (Machinery and Low Voltage Directives), UL (UL 1995/UL 60335 for North America), CSA (Canada), ASME (Boiler and Pressure Vessel Code), and EAC (Eurasian Economic Union). Our internal manufacturing operates under audited ISO 9001 and GJB national military standard quality control protocols.
What solvent recovery efficiency is guaranteed on DryAir NMP recovery systems?
DryAir ZJRH series NMP recovery plants achieve a verified solvent recovery rate of ≥99% from cathode coater drying exhaust. The recycled solvent purity is maintained at high standards suitable for in-house distillation and re-slurry processes, reducing operational costs and lowering VOC emissions.
What after-sales and on-site service support is available for international facilities?
We provide full lifecycle service support including remote PLC diagnostics via IoT gateways, guaranteed spare parts availability, scheduled field engineering visits, and an optional 2-year extended comprehensive overseas maintenance contract. Technical consultation is available via DryAir Global Service.
How does DryAir optimize energy efficiency during rotor reactivation?
Desiccant regeneration accounts for the primary energy consumption in deep dehumidification systems. DryAir utilizes proprietary internal heat recovery circuits, closed-loop regeneration purge cycles, waste-heat steam integration, and variable-enthalpy frequency drives. These engineering innovations lower reactivation energy consumption by 25% to 35% compared to conventional desiccant systems.
Industrial Catalog Selection
Commercial & Custom Dehumidification Machinery
Shortlist technical configurations or request custom psychrometric sizing directly from DryAir factory engineers.
Silica / Zeolite
Airlock Sealed
Solvent Reuse
Deep Condensation
Refrigeration
Custom Skid
GJB Compliant
Precision Clean
Fast-Track Engineering Proposal
Need Custom Industrial Dehumidification Sizing?
Send us your room dimensions, infiltration assumptions, process heat loads, and target dew point. Our engineering team provides detailed psychrometric calculations and system quotes within 24 hours.