-70°C DP Spec
Rotary Desiccant Dehumidifier
DHU industrial series with synthesized honeycomb metal silicate rotor for deep chemical moisture extraction.
View Specifications
Precision Equipment Series
Standard & Custom Industrial Chemical Dehumidifiers
Factory-direct engineering for gigawatt battery lines, pharmaceutical production cleanrooms, and chemical processing skids. Browse our premier product lines manufactured in Lin'an, Hangzhou.
-70°C DP Spec
Complete EPC
Turnkey Battery Dry Room
Airtight enclosure, air handling, cascade dehumidification, and commissioning for lithium-ion cell assembly.
Explore Dry Rooms
≥99% Recovery
ZJRH NMP Solvent Recovery
Closed-loop condensation and adsorption system recycling N-Methyl-2-pyrrolidone from coater exhaust.
Get Technical Data
Deep Cold + RTO
JEN VOC Abatement System
Integrated deep condensation combined with regenerative thermal oxidizer for volatile gas cleaning.
View VOC Systems
Pre-Cooling Stage
Refrigerative Dehumidifier
High-COP mechanical condensing dehumidifier designed for high-latent warehouses and desiccant pre-treatment.
View Condensers
GMP Class 100
Pharma-Grade Chemical Unit
Stainless steel sanitary desiccant air handlers with steam/electric reactivation and antibacterial seals.
Pharma Solutions
GJB Military Spec
Defense Anti-Corrosion Skid
Hardened sorption dehumidifier built under GJB national defense standards for missile and avionics storage.
Defense Catalog
Explosion-Proof
Oil Gas Condensation Skid
Cryogenic condensation and carbon-sorption recovery skid designed for terminal fuel loading operations.
Learn More
Industry Whitepaper • Technical Architecture
Demystifying Chemical & Sorption Dehumidification Engineering
Understanding the thermodynamical physics, solid-phase adsorption kinetics, and continuous rotary reactivation that separate industrial desiccant systems from conventional cooling condensers.
Non-Condensing Sorption Physics
While mechanical refrigeration falters below freezing temperatures because evaporator coils ice up at 0°C (32°F), chemical adsorption operates via differential vapor pressure. DryAir rotors utilize synthesized molecular sieves and active silica gel cross-linked inside a corrugated ceramic matrix to capture vapor at molecular levels without liquid transition.
Vapor Pressure GradientUltra-Low -70°C Dew Point Barrier
Achieving an extreme supply air dew point of -70°C (equivalent to 0.0033 grams of moisture per kilogram of dry air) demands multi-stage cascade designs. DryAir couples closed-loop purge sectors with high-temperature regeneration to prevent cross-leakage between moist exhaust channels and dry process airstreams.
<0.005 g/kg Absolute HumidityThermodynamic Heat Recovery
Desiccant regeneration consumes significant thermal energy (typically 120°C to 140°C). DryAir implements secondary internal heat-recovery wheels, steam-condensate integration, and industrial waste-heat recycling, trimming net operating costs (OPEX) by 25% to 42% compared to legacy desiccant skids.
Up to 42% Energy Savings
Manufacturing Superiority
Why Source Chemical Dehumidifiers from China?
China has established the world's most aggressive lithium-ion battery ecosystem, driving rapid iteration in desiccant wheel thermodynamics, precision sheet metal fabrication, and cost-effective automation.
Full-Stack Vertical Supply
From precision laser cut casing and CNC folding to internal rotor balancing and PLC wiring, 92% of DryAir componentry is produced within our Lin'an industrial campus, shielding international buyers from geopolitical supply chain bottlenecks.
92% In-House IntegrationMilitary & ISO Standards
Operating under rigorous ISO 9001 and China's GJB national military standard certification, every dehumidifier undergoes full-load psychrometric verification in our certified test chambers prior to export shipping.
GJB & ISO CertifiedExport Market Certifications
Custom engineered skids comply with international electrical, pressure vessel, and environmental protocols. Our factory delivers units with CE (Europe), UL/CSA (North America), ASME (pressure vessels), and EAC (Eurasia) certification marks.
CE • UL • CSA • ASME200+ Units Monthly Velocity
With massive automated workshops, DryAir produces over 200 high-capacity industrial dehumidification units per month, supporting simultaneous gigafactory phases in Europe, North America, and Southeast Asia on compressed timelines.
Rapid Lead Times
Next-Gen Technology Vectors
Chemical Dehumidification Trends Driving Modern Cleanrooms
From solid-state electrolytes demanding sub-ppb moisture thresholds to AI-driven psychrometric tuning, discover where industrial adsorption technology is heading.
Solid-State & Sodium-Ion Demands
Next-gen sulfide-based solid electrolytes degrade instantly upon contacting trace moisture, yielding lethal hydrogen sulfide (H2S) gas. DryAir is pioneering ultra-deep sorption cascades achieving continuous -75°C DP supply air with zero hydrocarbon or particulate contamination inside gloveboxes and modular pilot lines.
Ultra-Dry Nano-EnclosuresAI-Driven Psychrometric Modulation
Modern gigafactories cannot tolerate manual damper adjustments. DryAir embeds predictive PLC controllers that model real-time indoor latent load variations (operator shifts, airlock door ingress cycles, and diurnal weather swings), dynamic frequency modulating rotor rotation speed and regeneration heaters to save megawatts of electric power.
Autonomous Latent TrackingZero-Carbon Decarbonized Regas
European and North American green mandates require phasing out gas-fired reactivation burners. DryAir specializes in superheated high-COP industrial heat pumps, geothermal loop integration, and clean high-pressure steam coils to power regeneration without fossil combustors.
Scope 1 & Scope 2 Neutral
Global Application Scenarios
Application Matrices & Dew Point Selection Guide
Selecting incorrect humidity thresholds degrades production yield or generates runaway energy expenditure. Review engineering benchmarks vetted across hundreds of enterprise installations.
| Application Scenario | Critical Moisture Hazard | Required Dew Point / Target RH | Recommended Machine Architecture | Reference Link |
|---|---|---|---|---|
| Lithium-Ion Cell Assembly & Filling | LiPF6 reacts with ambient water vapor creating corrosive Hydrofluoric Acid (HF) | -40°C to -60°C DP | Turnkey Double-Rotor Adsorption Air Handling Unit | Dry Room Systems |
| Next-Gen Lithium Metal / Solid State | Violent oxidation and toxic H2S generation on sulfide solid separators | Down to -70°C DP | Deep Cascade Chemical Wheel with Closed Purge Skid | Desiccant Units |
| Cathode Slurry Coater Solvent Recovery | Volatile NMP solvent loss into atmosphere and elevated stack emissions | ≥99% Recovery (<10ppm) | Condensation Cooling + ZJRH Rotary Concentration Skid | NMP Systems |
| Hygroscopic Pharma & Softgel Capsules | Powder clumping during tableting; gel liquefaction during encapsulation | 10% to 25% RH (+20°C) | Sanitary Cleanroom Chemical Dehumidifier (GMP standard) | Pharma Dehumidifiers |
| Aerospace Avionics & Ordnance Depots | Micro-galvanic corrosion on circuit traces and propellant degradation | ≤35% RH (Ambient) | Hardened GJB Military Desiccant Dehumidification Skid | Military Products |
| Chemical Tank Depots & Petro terminals | Volatile organic compound venting during tank venting and filling | National Emission Caps | Deep-Cooling Condensation Skid + JEN RTO Oxidizer | VOC Systems |
| Cold Logistics & Intermediate Warehouses | Sweating concrete slabs, frost build-up on overhead evaporator fans | 40% to 50% RH | High-COP Commercial Refrigerative Dehumidifier Skid | Refrigerative Units |
Global Engineering Procurement
Meeting International Procurement Standards
Procurement teams at multinational gigafactories audit four major pillars prior to contracting: technical risk mitigation, verified field references, international safety code compliance, and life-cycle aftersales reliability.
Tier-1 Validated Track Record
DryAir systems are rigorously proven across marquee battery producers including CATL, BYD, ATL, EVE Energy, SVOLT, Farasis, and Envision, as well as global western innovators such as Tesla, Northvolt, and TTI.
Tesla & Northvolt VettedLeak-Proof Mechanical Integrity
Air handling casings feature thermal break structural extrusions, dual-skin 304/316 stainless or powder-coated galvanized steel panels, and silicone-free high temperature mechanical labyrinth air seals rated for low infiltration.
Thermal Break ConstructionFactory Acceptance Testing (FAT)
Every customer can witness automated FAT protocols via high-definition remote telemetry or in-person visits to Lin'an, monitoring sensor points, amperage draws, dew points, and airflow curves under simulated thermal loads.
100% FAT ValidationTwo-Year Global Service Plan
International clients enjoy an optional 2-year turnkey service agreement encompassing dispatched commissioning engineers, remote IoT diagnostic feeds, and dedicated regional spare parts hubs for zero downtime.
Optional 2-Yr Warranty
EPC Turnkey Execution
End-to-End Delivery Methodology
From psychrometric simulation to final dew point validation, our 5-stage project framework guarantees that your production facility operates exactly as specified.
01. Load Audit
Quantification of room volume, door openings, worker sensible/latent respiration, and raw process exhaust loads.
02. Engineering
CFD airflow modeling, psychrometric load plotting, duct sizing, and regenerative heating source integration.
03. Fabrication
Automated CNC enclosure fabrication, rotor assembly, control panel wiring, and stringently monitored in-house FAT.
04. Installation
Turnkey field erection, modular envelope sealing, ductwork hookups, and integrated chilled water/steam commissioning.
05. Validation
Multi-point sensor dew point data logging, room pressure checks, and personnel handover with continuous remote monitoring.
Procurement & Technical Q&A
Frequently Asked Questions by Global Engineering Teams
Addressing the exact technical, mechanical, and commercial inquiries submitted by battery, pharmaceutical, and cleanroom engineering leaders.
What is the lowest dew point a DryAir desiccant dehumidifier can reliably achieve?
Hangzhou DryAir rotary chemical desiccant dehumidifiers stably achieve supply air down to a minimum of -70°C dew point (DP). This specification is designed specifically for lithium battery cell assembly, electrolyte filling, and solid-state battery synthesis where ambient moisture must be virtually eradicated.
Do you deliver complete turnkey dry rooms for gigafactories outside China?
Yes. DryAir provides turnkey dry room delivery models covering engineering consulting, building enclosure envelope fabrication, air handling design, mechanical installation, and on-site validation. We have successfully executed projects globally for prominent overseas manufacturers including Tesla, Northvolt, and TTI.
Which safety and export compliance certifications are supported?
Depending on your destination jurisdiction, DryAir equipment is fully engineered to comply with CE (LVD/MD/EMC) for the European Union, UL and CSA standards for North American markets, ASME pressure vessel codes, and EAC certification for Eurasian territories. We adhere to ISO 9001 and China's GJB national military standard quality control.
What solvent recovery rate can DryAir NMP systems achieve on coating lines?
DryAir ZJRH series NMP solvent recovery systems consistently yield a recovery efficiency rate of ≥99% from electrode coater drying exhaust. This drastically minimizes ongoing N-Methyl-2-pyrrolidone solvent expenditure and brings VOC stack emissions into full compliance with strict environmental regulations.
What heating media can be utilized for desiccant wheel reactivation?
Our custom engineering supports multiple regeneration heating media including electric PTC heaters, saturated industrial steam coils, natural gas/LPG direct or indirect fired burners, industrial waste-heat recycling loops, or hybrid heat-pump systems to best match plant utility costs and decarbonization goals.
What after-sales service and spare parts availability exist overseas?
Overseas clients can select an optional two-year comprehensive service agreement. We offer 24/7 remote IoT diagnostics, express worldwide dispatch of critical spare parts (drive belts, seals, bearings, sensors), and the deployment of factory-trained commissioning engineers directly to your plant site worldwide.
Complete Systems Inventory
Deployable Custom Dehumidifiers & Environmental Skids
Review our complete product catalog for cleanrooms, industrial processing plants, and critical warehousing applications.
DHU Model
Low Dewpoint Desiccant System
DHU industrial rotary dehumidifier designed for continuous deep moisture capture down to -70°C DP.
View Desiccant Unit
Gigafactory Scale
Modular Battery Dry Room EPC
Integrated dry room envelopes, desiccant air handlers, and validation built for high-volume cell manufacturing.
View Dry Room EPC
ZJRH Skid
Closed-Loop NMP System
High-efficiency electrode drying coater exhaust recovery skid achieving ≥99% solvent reclamation.
View NMP Unit
RTO Incineration
Industrial VOC Treatment Plant
Advanced condensation and regenerative thermal oxidation to neutralize chemical plant emissions.
View VOC Solution
Condensing Unit
High-Capacity Condenser
Refrigerative mechanical dehumidifier for general industrial workshops, warehouses, and pre-cooling.
View Condenser
Sanitary Desiccant
GMP Sorption Air Handler
Complete stainless steel casing and wash-down chemical dehumidifiers engineered for pharmaceutical factories.
View Pharma Unit
Defense Standard
GJB Military Air Handler
Hardened anti-corrosion desiccant environmental control system designed for defense storage facilities.
View Defense Skid
Cryogenic Skid
Petrochemical Vapor System
Condensed refrigeration and hydrocarbon vapor treatment platform engineered for petrochemical loading terminals.
View Vapor Unit
Direct Engineering Collaboration
Request Technical CAD Drawings, Psychrometric Calculations & Full Catalog
Partner directly with Hangzhou DryAir's HVAC application engineering department. We deliver preliminary equipment sizing, airflow schematics, and detailed CAPEX/OPEX lifecycle models within 24 hours.