DP -70°C
Desiccant Dehumidifier
DHU series rotary desiccant dehumidifiers built with robust metal enclosures, providing stable low-dew-point dry air for lithium gigafactories, cleanrooms, and military storage.
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TESLANORTHVOLTCATLATLBYDEVE ENERGYFARASISENVISION AESCSVOLTTTI
TESLANORTHVOLTCATLATLBYDEVE ENERGYFARASISENVISION AESCSVOLTTTI
High-Performance Equipment
Standard & Heavy-Duty Metal Case Dehumidification Systems
Engineered with double-wall insulated metal casings, anti-corrosive powder coats, and precision rotary desiccant rotors to withstand harsh, continuous factory environments.
DP -70°C
EPC Turnkey
Turn-key Dry Room System
Complete envelope air-tight metal structure, custom air treatment handling modules, deep desiccant regeneration, and automated psychrometric loop engineering.
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≥99% Efficiency
NMP Recovery System
Captures N-Methyl-2-pyrrolidone solvent from electrode coater lines. Heavy-gauge metal frame protects multi-stage condensation and VOC concentration units.
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Cooling + RTO
VOC Abatement System
Deep-cooling condensation units combined with regenerative thermal oxidizers (RTO) in high-temperature painted alloy casings for emission compliance.
Abatement Details
High COP
Refrigerative Dehumidifier
Sheet metal anti-vibration chassis designed for warehouses, packaging facilities, and primary moisture stripping ahead of deep-desiccant processes.
Refrigerative Units
-50°C to -70°C
Battery Cell Dehumidifier
Custom metal case units with zero-bypass air seals and internal heat exchangers designed specifically for lithium pouch, cylindrical, and prismatic manufacturing.
Battery Systems
GMP / 304 SS
Pharma Cleanroom Dehumidifier
Full 304/316 stainless steel metal case enclosures built for sterile GMP medical processing, effervescent powder blending, and softgel gelatin drying rooms.
Pharma Solutions
GJB Military Standard
Defense & Marine Dehumidifier
Galvanized structural steel framework engineered for harsh coastal humidity, ammunition arsenals, radar bridge preservation, and bridge cable protection.
Defense Systems
Industry White Paper Insight
Evolution of Industrial Metal Case Dehumidification: Global Trends & Sourcing Demands
Why Tier-1 industrial buyers are transitioning from composite/plastic shells to high-rigidity modular sheet metal casings to ensure psychrometric airtightness, energy containment, and 20-year structural life.
Hermetic Metal Casing Integrity
Under ultra-low dew point conditions (-50°C to -70°C), partial water vapor pressure differences between ambient air and process ducts can exceed 2.5 kPa. Plastic or lightweight composite panels suffer micro-fractures, air leakages, and vapor permeation. Hangzhou DryAir uses laser-welded, CNC cold-bent heavy-gauge steel with thermal-break aluminum profiles, ensuring zero ambient air bypass and minimal thermal bridging.
Thermal Efficiency & Heat Recovery
Regeneration heating constitutes over 70% of an industrial desiccant system's running OPEX. Advanced metal casings incorporate polyurethane or rockwool dual-skin insulation (thickness 50mm–100mm) with thermal conductance below 0.024 W/(m·K). Combined with internal heat wheels and heat pipe recovery loops, overall energy consumption drops by 25% to 38% compared to legacy installations.
Seismic & Explosion-Proof Standards
Global gigafactories and hazardous solvent facilities require rigorous fire and vibration resistance. DryAir metal casings meet seismic rating Zone 4 criteria, IECEx/ATEX explosion-proof requirements for Zone 1/Zone 2 environments, and feature powder coatings rated for 1,000+ hours of continuous salt-spray testing according to ASTM B117 standards.
-70°C
Controllable Supply Dew Point
≥99%
NMP Solvent Recovery Rate
30%+
China Desiccant Market Share
200+
Units Manufactured / Month
74
R&D Engineers & Specialists
Macro Industry Solutions
Engineered Humidity Control Across Critical Modern Infrastructure
We do not deliver off-the-shelf catalog models; our registered HVAC engineers architect airflow paths, psychrometric balancing, and casing materials around your exact material sensitivities.
Gigafactory Battery Dry Rooms
Lithium salts react violently with moisture to generate hydrofluoric acid (HF). DryAir dry rooms and high-capacity desiccant handlers maintain -40°C to -70°C dew point environments 24/7 across cell winding, assembly, and electrolyte filling areas, trusted by CATL, BYD, Tesla, and Northvolt.
Aerospace & Defense Clean Enclosures
Certified under the GJB national military standard, our ruggedized metal dehumidifiers safeguard avionics assembly, optical sensor calibration bays, missile propulsion solid-fuel production, and ammunition warehouses from oxidation, mold, and electronic short circuits.
Biopharma & Gelatin Processing
Hygroscopic pharmaceutical powders, effervescent tablets, and softgel capsules require strict 10%–25% RH levels to stop clumping during tablet pressing and high-speed blister packaging. Double-skin 304/316 stainless steel casings satisfy strict cGMP and FDA sanitary cleanability mandates.
Engineering Selection Matrix
Dew Point Selection Guide by Industrial Application
Specifying moisture tolerances too tight wastes immense capital and energy; specifying too loose risks entire manufacturing batches. Reference our empirical project data matrix below.
| Application Sector | Target Environmental Dew Point / RH | Casing & Seal Specification | Recommended System Line |
|---|---|---|---|
| Lithium-ion Battery Assembly & Electrolyte Filling | -40°C to -60°C Dew Point | Double-skin thermal break, airtight welded seams | Turn-key Dry Room System |
| Solid-State & Lithium-Metal Next-Gen Cells | -60°C to -70°C Dew Point | Zero-leakage metal frame, multi-stage silica/zeolite rotor | Desiccant Dehumidifier (DHU Series) |
| Cathode/Anode Coating & Solvent Drying Lines | Exhaust Solvent Recovery ≥99% | Anti-explosion stainless/heavy steel piping & chamber | NMP Recovery System (ZJRH) |
| Sterile Pharma Packaging & Capsule Blending | 10% to 25% RH (Ambient 22°C) | Full AISI 304 Stainless Steel metal interior & exterior | Desiccant Dehumidifier |
| Petrochemical Storage & Bulk Fuel Terminals | VOC Emission Compliance Limits | Heavy-duty condensation modules + refractory RTO chamber | VOC Abatement System (JEN) |
| Industrial Warehouses & Pre-Cooling Intake | 45% to 55% RH | Galvanized anti-rust powder coated steel case | Refrigerative Dehumidifier |
Global Compliance & Support
International Certification & Worldwide Lifecycle Guarantee
Exporting heavy industrial systems requires total adherence to host-country engineering codes, electrical standards, and dependable on-site commissioning.
Certified for Global Export
Our units come certified for regional jurisdictions including CE (Europe), UL / CSA (North America), ASME pressure vessel compliance, and EAC for Eurasian unions, ensuring frictionless customs clearance and local utility interconnect approval.
Optional 2-Year Overseas Service
International buyers benefit from tailored lifecycle plans covering scheduled maintenance, preventive rotor inspection, remote cloud diagnostics, rapid spare part dispatches, and on-site engineering dispatch directly from Hangzhou.
Full In-House Test Laboratory
Every single metal case dehumidification unit undergoes full load testing in our factory environmental simulation chamber before crating. Airflow volume, static pressure, motor draw, and dew point suppression are documented and verified.
Proven Overseas Footprint
Over a decade of successful field operations supporting landmark battery gigafactories across Scandinavia, North America, Southeast Asia, and Central Europe, partnering with global OEMs like TTI, Tesla, and Northvolt.
R&D & Future Outlook
Next-Generation Technology Roadmap for Metal Case Dehumidifiers
Anticipating the technological demands of sodium-ion battery lines, solid-state electrolytes, and zero-carbon industrial facilities.
AI-Driven Psychrometric Self-Balancing
Our upcoming generation of industrial controllers incorporates predictive humidity analytics. By continuously monitoring ambient weather forecasts, shifting production schedules, and cleanroom air infiltration, algorithms dynamically adjust reactivation heat and blower speeds, trimming up to 18% additional electrical waste.
Advanced Composite Adsorption Rotors
In partnership with material science institutes, Hangzhou DryAir is advancing next-generation zeolite-metal organic framework (MOF) rotor media. These matrices allow desiccant regeneration at temperatures as low as 85°C–90°C (compared to standard 130°C–140°C), unlocking direct integration with industrial waste hot water.
Ultra-Modular Casing Architectures
To reduce containerized freight costs and simplify cleanroom interior retrofits, our newest casing lines feature quick-interlock, modular flat-pack frames. Plants can scale up CFM capacities by docking auxiliary dehumidification modules without rebuilding duct risers.
Procurement & Technical FAQ
Frequently Asked Questions by Global Engineering Buyers
Direct technical answers addressing structural casing durability, ultra-low dew point tolerances, NMP recovery efficiency, and overseas installation support.
What are the key advantages of a Metal Case Dehumidifier over plastic or composite housings?
Industrial metal case dehumidifiers feature double-wall insulated sheet metal (galvanized steel or 304/316 stainless steel) with polyurethane or mineral wool thermal insulation. This structure prevents air casing leakage under high static pressures (up to 3,000 Pa), eliminates moisture permeation into ultra-low dew point airstreams, provides Class 0 fire retardancy, and ensures mechanical longevity exceeding 20 years in corrosive or high-temperature factory conditions.
What is the lowest dew point a DryAir desiccant dehumidifier can achieve?
Hangzhou DryAir rotary desiccant dehumidifiers can reliably control process supply air down to a minimum of -70°C dew point. This capability is critical for solid-state lithium battery cell assembly, high-voltage electrolyte filling, and moisture-free aerospace production.
Do you deliver complete turnkey dry rooms for gigafactories outside of China?
Yes. Hangzhou DryAir acts as a complete EPC provider for turnkey dry room systems globally. Our scope includes preliminary architectural review, psychrometric load calculations, HVAC duct layout, modular air-tight metal enclosure supply, dehumidifier manufacturing, on-site mechanical erection, commissioning, and final validation. We have delivered successful facilities for international leaders including Tesla, Northvolt, and TTI.
Which international certifications do DryAir systems carry for customs clearance?
Depending on target market standards and product series, DryAir equipment can be provided fully certified to CE (Machinery & EMC Directives), UL (Underwriters Laboratories), CSA (Canadian Standards Association), ASME (Boiler and Pressure Vessel Code), and EAC (Eurasian Conformity). The company adheres strictly to ISO 9001 and the GJB national military quality standard.
What recovery rate does the DryAir NMP Recovery System guarantee on electrode coating lines?
DryAir ZJRH series NMP recovery systems achieve a guaranteed solvent recovery efficiency of ≥99%. Through proprietary multi-stage deep condensation combined with zeolite adsorption concentration, recovered NMP fluid maintains high purity, slashing ongoing solvent procurement costs and ensuring compliance with stringent VOC discharge limits.
What after-sales service and spare parts support are offered to overseas customers?
Overseas clients receive 24/7 remote diagnostic support, factory spare parts supply dispatched within 48 hours, and optional 2-year on-site comprehensive service contracts. DryAir commissioning teams can be deployed on-site worldwide to oversee balancing, electrical integration, and dew point compliance sign-off.
Complete Solution Range
Explore the Hangzhou DryAir Environmental Technology Lineup
From pre-cooling units and high-capacity desiccant rotors to industrial emission treatment, explore our specialized metal-enclosed product families.
Silica / Zeolite
Rotary Desiccant Unit
Industry standard for deep drying, moisture control, and energy recovery, housing high-efficiency honeycomb rotors inside rigid metal frames.
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Custom Gigafactory
Turn-key Battery Dry Room
High-integrity cleanrooms engineered to hold -50°C to -70°C dew point despite high technician traffic and active manufacturing lines.
Dry Room EPC
Purity ≥99%
NMP Solvent Recycler
Recaptures costly solvent vapors from battery coater ovens, reducing continuous purchase expenses while satisfying plant emission thresholds.
Recycling Tech
Thermal RTO
VOC Abatement System
Combines condensation recovery and regenerative thermal oxidation to treat industrial chemical emissions with over 98% destruction efficiency.
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High Efficiency
Refrigerative Dehumidifier
Heavy-gauge sheet metal condenser units for warehouses, food drying, and industrial pre-cooling with automated defrost and digital controls.
Chilled Water
GJB Military Spec
Military & Naval Dryers
Shock-tested, corrosion-resistant metal case environmental systems safeguarding aircraft hangars, naval vessels, and ammunition preservation depots.
Defense Specs
GMP / FDA Ready
Pharma Moisture Control
Polished stainless steel modular housings preventing powder deliquescence and capsule jamming in pharmaceutical processing suites.
Pharma Units
Explosion Proof
Oil Gas Recovery Unit
Designed for chemical loading bays and fuel tank farms, condensing volatile hydrocarbon vapors inside reinforced explosion-proof metal skids.
Vapor Recovery
Engineering Knowledge Base
Technical Field Insights from Hangzhou DryAir Engineers
Case studies and engineering principles from actual factory floor installations to assist design consultants and facility managers.
How Oil Gas Condensation Recovery Systems Work
Condensation recovery captures light hydrocarbons during tanker loading before atmospheric venting. Read how multi-stage refrigeration optimizes VOC compliance.
Maintaining Stable NMP Recovery Efficiency 24/7
Explore engineering solutions to eliminate pressure drops and maintain ≥99% solvent recovery stability throughout continuous high-speed battery coating runs.
Preventing Moisture Failures in Drug Manufacturing
From tablet pressing to gelatin softgel encapsulation, learn how relative humidity variations lead to product degradation, and how metal case desiccant units eliminate clumping.
Direct Engineering Consultation
Request Complete Metal Case Dehumidifier Engineering Catalog
Access CAD drawings, airflow psychrometric charts, casing thermal-break specifications, and reference installation logs for global cleanrooms and battery dry rooms.