-70°C DP
Industrial Desiccant Dehumidifier
DHU series rotary systems engineered with high-efficiency silica gel and molecular sieve rotors for extreme low dew point processing.
Product Specifications
Enterprise Catalog Dispatch
Engineered Moisture Control Solutions: Top Product Fleet
Mission-critical low dew point configurations manufactured for high-throughput battery gigafactories, military warehouses, and aseptic pharmaceutical dry rooms.
-70°C DP
Turnkey EPC
Turn-key Dry Room System
Full envelope architecture including airtight modular wall panels, airlocks, low dew point air handlers, and integrated automation.
Turnkey Solutions
≥99% Efficiency
NMP Recovery System
High-yield condensing and absorption technology capturing N-Methyl-2-pyrrolidone solvent from electrode coating exhaust.
Solvent Recovery
Condensation + RTO
VOC Abatement System
Dual-stage cryogenic condensation paired with Regenerative Thermal Oxidizers (RTO) for extreme emissions control compliance.
Abatement Systems
Energy Saver
Refrigerative Dehumidifier
Pre-cooling and condensation moisture extraction systems for mass manufacturing workshops and pre-treatment stages.
Refrigerative Units
Gigafactory Grade
Battery Cell Assembly Dehumidifier
Customized ultra-low dew point air treatment units built for high personnel density and process-generated thermal loads.
Explore Assembly Units
GMP / FDA Class
Pharmaceutical Desiccant Dryer
Sanitary grade, stainless-steel dual rotor desiccant air drying setups built for sterile filling, encapsulation, and dry granulating.
Cleanroom Dryers
GJB Standard
Defense & Aerospace Dry Air System
Ruggedized, military-spec anti-corrosion desiccant assemblies guaranteeing dry preservation for strategic defense armaments.
Defense Systems
Supply Chain & Scale Superiority
Why Global Tier-1 Manufacturers Source Desiccant Dryers from China
Capital expenditure efficiency combined with unmatched precision manufacturing and end-to-end integration creates an undeniable industrial benchmark.
Vertically Integrated Supply Chain
Hangzhou DryAir controls every layer of production in-house: from precision sheet metal fabrication, continuous laser welding, proprietary rotor cassette housing machining, to full PLC control panel assembly. This complete internal capability eliminates middleman delays, curbs cost spikes, and enables rigorous tolerance control.
Rapid Factory Commissioning & Agility
Standard lead times for Western European or American industrial desiccant manufacturers frequently stretch from 28 to 44 weeks. Leveraging Hangzhou's advanced industrial corridor and our output rate of 200+ units monthly, DryAir delivers custom-engineered multi-rotor skids in 8 to 12 weeks, matching hyper-aggressive Gigafactory construction schedules.
Massive OPEX Reduction via Heat Recovery
Desiccant regeneration demands immense thermal energy. DryAir designs advanced waste heat recycling modules that divert waste heat from coater exhaust stacks, steam lines, or compressor loops directly into the desiccant regeneration sector, cutting electricity consumption by up to 35% compared to legacy setups.
Military-Grade Quality Management
Our quality system is verified under both ISO 9001 and the rigid GJB National Military Standard. Every unit undergoes rigorous dynamic thermal, pressure containment, and dew point stability audits inside our dedicated environmental test chambers before packaging for export.
Proven in Field Operations
Gigafactory-Tested Engineering Depth You Can Audit
Hangzhou DryAir holds a formidable reputation across the globe. Our industrial systems run uninterrupted within high-stakes manufacturing plants operated by the industry's most demanding brands.
Tier-1 Global Customer Trust
Serving world-renowned manufacturers including Tesla, Northvolt, CATL, ATL, BYD, EVE Energy, SVOLT, Farasis, Envision, and TTI. Our team understands exact client validation procedures, Cleanroom Class 1,000 to 100,000 interfaces, and fail-safe design rules.
Comprehensive Export Compliance
Meeting local technical regulations without expensive refits. DryAir systems ship with full compliance and certifications for CE (Europe), UL/CSA (North America), ASME (Boiler and Pressure Vessels), and EAC (Eurasian Customs Union).
Worldwide Field Engineering Support
We deploy senior HVAC field engineers internationally for on-site structural assembly, system integration, dew point validation, and operator training. We offer optional comprehensive 2-year overseas field service agreements alongside rapid global spare parts dispatch.
Technical Whitepaper: Macro Trends & Local Scenarios
Evolving Standards in Industrial Dehumidification & Air Separation
How next-generation battery chemistries, semi-solid electrolyte technologies, and strict global ESG regulations are fundamentally reshaping drying specifications.
Solid-State & Lithium Metal Transition
Standard Lithium-ion cell assembly operates safely around -40°C to -50°C dew points. However, the rise of lithium-metal anodes and moisture-reactive sulfide solid electrolytes demands stringent atmospheric control at -60°C to -70°C dew point (less than 0.1% Relative Humidity) to prevent lethal hydrogen sulfide release and hazardous anode oxidation.
AIoT Predictive Psychrometric Automation
Modern plants eliminate manual adjustments. DryAir incorporates AIoT microcontrollers that monitor outdoor weather fluctuations, dynamic operator counts, and process heat loads in real-time. Modulating fan velocities, regeneration heat power, and bypass dampers through neural predictive algorithms cuts standby energy waste by up to 28%.
Zero-Emission Closed Loop NMP Recycling
Environmental scrutiny on volatile organic solvent emissions has reached zero-tolerance across Europe and North America. DryAir's integrated ZJRH condensation units achieve ≥99% recovery rates, turning noxious coater emissions back into pure, reusable liquid N-Methyl-2-pyrrolidone on-site.
| Application Scenario | Environmental Challenge | Target Spec (Dew Point / RH) | Recommended System Configuration |
|---|---|---|---|
| Lithium-ion Cell Assembly & Electrolyte Filling | Moisture reacts violently with LiPF6 to generate toxic, corrosive hydrofluoric acid (HF). | -40°C to -60°C DP | Turn-key Dry Room EPC |
| Next-Gen Solid State & Lithium Metal Cells | Extreme volatility of lithium foils and hygroscopic sulfide-based solid electrolyte powders. | -60°C to -70°C DP | Molecular Sieve Desiccant DHU |
| Electrode Slurry Coating & Drying Zones | Continuous evaporation of hazardous, high-cost N-Methyl-2-pyrrolidone solvent gas. | ≥99% Solvent Yield | ZJRH Series NMP Recovery |
| Aseptic Pharmaceutical Powders & Capsules | Caking of active pharmaceutical ingredients (APIs) and gelatin softening during packaging. | 10% - 25% RH | Hygienic Desiccant Dehumidifier |
| Aerospace Avionics & Defense Weaponry Storage | Atmospheric corrosion, electrical micro-short circuits, and propellant powder decay. | ≤35% - 40% RH | GJB Defense Preservation Units |
| Bulk Raw Material Warehousing & Pre-Cooling | High volume ambient moisture load entry during humid seasons and raw material staging. | 45% - 60% RH | Refrigerative Dehumidifier |
| Petrochemical Fuel Storage & Solvent Vapors | Volatile hydrocarbon release during fuel truck loading, vessel clearing, and oil handling. | Compliance Limit | Deep Cooling + RTO System |
Structured Delivery Model
How Hangzhou DryAir Delivers Turnkey Dry Room Projects Worldwide
From initial psychrometric load simulation to international field erection and dew point guarantee handoffs.
01. Process Consulting
We review the entire client process: chemical properties, room volume, doorway cycle frequency, occupant density, and latent moisture inputs to establish exact supply dew point parameters.
02. Psychrometric Engineering
Our senior HVAC engineers model airflow CFD dynamics, calculate regeneration energy loops, determine duct pressure losses, and optimize heat recovery heat exchangers to cut operating costs.
03. In-House Manufacturing
Fabrication under ISO 9001 and GJB protocols. Every desiccant rotor assembly, blower skid, and electrical panel is tested in our dynamic environmental testing room before container loading.
04. Field Installation
DryAir field engineers travel on-site to oversee room sealing, duct connection, sensor calibration, and equipment balance, ensuring rapid commissioning to hit targeted dew point specs.
05. Lifecycle Maintenance
Complete documentation packages, predictive maintenance alerts, remote tele-diagnostics, rapid spare parts shipping, and an optional comprehensive 2-year overseas warranty program.
Engineering Knowledge Hub
Field-Proven Insights: Technical Articles From Our Engineers
In-depth analysis drawn directly from job-site commissioning, psychrometric optimization, and solvent abatement plants.
How Does an Oil Gas Condensation Recovery System Work in Field Operations?
Oil gas condensation recovery systems help bulk fuel storage, port terminals, and solvent handling plants capture hydrocarbon vapors during filling and tank venting before toxic discharge occurs.
Read Full Analysis
Maintaining Stable ≥99% NMP Recovery on High-Speed Continuous Lines
NMP is vital for lithium cathode slurry coating. Examine how multi-stage chilled condensation and heat integration prevent solvent loss and emissions during continuous 24/7 production.
Read Full Analysis
Moisture Impact Mitigation in Industrial Pharmaceutical Formulations
From fine powder milling to high-speed tablet pressing and softgel capsule sealing, unmanaged moisture triggers ingredient hydrolysis and clumping. Review engineering countermeasures.
Read Full Analysis
Technical & Commercial FAQ
Questions Global Procurement Directors Ask First
Clear answers on dew point performance, international certifications, installation timelines, and technical validation.
What is the minimum controllable dew point Hangzhou DryAir systems achieve?
Hangzhou DryAir rotary desiccant dehumidifiers reliably achieve and maintain supply air down to -70°C dew point (equivalent to <0.1% Relative Humidity). This level of extreme dry air control is mandatory for lithium battery cell assembly, electrolyte filling, and next-generation solid-state battery manufacturing.
Can DryAir deliver complete turnkey battery dry rooms outside of China?
Yes. We execute complete EPC dry room projects internationally, encompassing engineering consulting, CFD simulation, modular wall manufacturing, HVAC skid fabrication, on-site commissioning, and validation. We have successfully deployed systems for overseas projects including Tesla, Northvolt, and TTI.
Which international regulatory certifications do your export systems hold?
Depending on model and destination specifications, DryAir systems are fully certified to CE (Machinery & Low Voltage Directives), UL 1995 / UL 60335, CSA C22.2, ASME pressure vessel standards, and EAC certification for Eurasian markets. Our facility operates under ISO 9001 and China's GJB national military standard.
What solvent recovery efficiency does the DryAir NMP system guarantee?
DryAir ZJRH series NMP recovery systems are engineered to achieve an overall solvent recovery yield equal to or greater than 99% on continuous electrode coating and drying lines, substantially slashing solvent purchasing expenditures while staying well below environmental discharge thresholds.
What warranty and field service coverage is available for overseas clients?
International clients receive 24/7 remote diagnostic support, factory replacement spare parts dispatch, and on-site engineering supervision during setup. Buyers can also secure an optional two-year comprehensive overseas warranty and field maintenance agreement with direct engineer presence.
How does DryAir reduce energy consumption during desiccant wheel regeneration?
We employ secondary heat-recovery loops, hot-water/steam co-generation coils, and coater exhaust air-to-air heat exchangers. By reclaiming heat from industrial waste streams and applying intelligent variable-frequency fans, our systems lower overall desiccant regeneration electricity demand by 25% to 35%.
Complete System Deployment
Explore the Full DryAir Industrial System Portfolio
Click through any equipment series below to access comprehensive technical drawings, airflow charts, and direct engineering RFQ channels.
DHU Series
Industrial Desiccant Dehumidifier
High-efficiency desiccant rotary equipment controlling supply air down to -70°C dew point for lithium battery dry rooms.
View Specifications
Complete EPC
Turn-key Dry Room System
End-to-end dry room solutions: insulated envelope panels, HVAC air treatment, controls, validation, and maintenance.
Explore Dry Rooms
ZJRH Series
NMP Recovery System
Engineered solvent condensation recovery units with ≥99% recovery efficiency for lithium-ion electrode coater exhaust.
Learn More
JEN Series
VOC Abatement System
Deep-cooling condensation coupled with Regenerative Thermal Oxidation (RTO) for VOC abatement and oil vapor recovery.
Learn More
Pre-Cooling
Refrigerative Dehumidifier
Cost-effective initial moisture extraction for raw material warehouses and pre-cooling stages before desiccant treatment.
Learn More
Custom Skid
Dual Rotor Low Dew Point Skid
Staged desiccant rotors with intermediate chillers, designed for ultra-low humidity in pouch and prismatic battery lines.
View Skid Specs
Clean Process
Coating Line Exhaust Separator
Integrated ductwork and chilled recovery manifolds specifically designed for volatile cathode manufacturing lines.
View Exhauster
Thermal RTO
Regenerative Thermal Oxidizer (RTO)
High-efficiency ceramic heat bed oxidizers destroying toxic gaseous pollutants and volatile organic compounds with >99% DRE.
View RTO Specs
Direct Engineering Tender Desk
Equip Your Next Gigafactory With Proven Expertise
Submit your plant dimensions, production capacity, and target dew point requirements. DryAir senior HVAC psychrometric engineers will respond with a full technical load profile and system design proposal within 24 business hours.