DP -70°C Spec
Industrial Rotary Desiccant Dehumidifier
DHU series heavy-duty rotary desiccant system delivering extreme low-dew-point air where refrigeration alone falls short.
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Primary Engineered Product Portfolio
Integrated Climate & Humidity Management Solutions
Combining domestic air purification, desiccant moisture harvesting, and industrial-grade atmospheric control designed for global OEM/ODM deployment.
DP -70°C Spec
Turnkey EPC
Turn-Key Dry Room Engineering System
Complete hermetic enclosure, air handling, low-dew-point dehumidification, intelligent controls, and validation under one contract.
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Recovery ≥99%
ZJRH Series NMP Solvent Recovery
Captures N-Methyl-2-pyrrolidone from coater exhaust streams for continuous reuse, eliminating chemical discharge.
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Cooling + RTO
JEN Series VOC Abatement System
Deep-cooling condensation coupled with regenerative thermal oxidation (RTO) for extreme volatile organic emission treatment.
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Eco Refrigerant
Commercial Refrigerative Dehumidifier
High-efficiency moisture extraction for residential basements, commercial warehouses, and pre-cooling systems.
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HEPA H14 + Rotor
Whole-House Air Purifier & Dehumidifier
Hybrid domestic air treatment integrating medical-grade true HEPA filtration, active carbon adsorption, and quiet desiccant drying.
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High Precision
Precision Cleanroom Climate Air Handler
Engineered to deliver continuous positive pressure, sterile airborne particulate removal, and precise temperature-humidity stabilization.
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Hazardous Zone
Hazardous Condensation Oil-Gas Scrubber
Certified ATEX/IECEx compliant vapor extraction systems for fuel transfer stations, toxic solvent areas, and paint lines.
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Industry White Paper & Sourcing Intelligence
The Global Shift in Air Purification & Moisture Control Systems
Analyzing procurement dynamics, climate change drivers, and technological convergence between domestic indoor air quality (IAQ) and mission-critical industrial manufacturing.
1. Convergence of IAQ and Humidity Control
Traditional domestic air cleaners only captured particulate matter (PM2.5, pollen, dander). Today's procurement specifications require dual-action systems: biological allergen capture via True HEPA coupled with active desiccant moisture regulation to inhibit mold, mycotoxins, and formaldehyde desorption in closed HVAC systems.
2. Energy Crisis & Heat Pump Integration
Standard refrigerative dehumidifiers consume extreme electricity in sub-20°C temperatures due to evaporator coil icing. China's leading manufacturers are deploying twin-rotor solid desiccant matrices combined with microchannel heat pumps, achieving up to 48% COP (Coefficient of Performance) gains over legacy condenser designs.
3. IoT, Edge Computing & Predictive Maintenance
Modern residential and commercial distributors demand integrated Tuya/Matter-compatible microcontrollers. Real-time air quality metrics, VOC sensors, saturation thresholds of desiccant wheels, and automated ultrasonic regeneration schedules are now mandatory for tier-one international supply contracts.
Technical Procurement Note: Industrial-scale battery production (such as CATL, BYD, and Tesla gigafactories) requires ambient air control below -70°C dew point. This same rotary desiccant core engineering has been adapted down to commercial and domestic architectural platforms by Hangzhou DryAir Treatment Co., Ltd., guaranteeing industrial reliability in home and residential HVAC environments.
TESLA
NORTHVOLT
CATL
BYD
ATL
EVE ENERGY
SVOLT
TTI
Macro Application Architecture
Engineering Solutions Sized to Process Sensitivity
Whether eradicating airborne fungal spores in luxury residential developments or mitigating hydrofluoric acid gas in giga-scale battery dry rooms, our systems deliver uncompromised precision.
Luxury Residential & Smart Homes
Centralized fresh air ventilation integrating true desiccant dehumidifiers with dual MERV 16 / HEPA H14 filtration. Keeps baseline indoor humidity strictly between 45% and 50% RH year-round without chilling room air or causing thermal shock.
Lithium-Ion Battery Gigafactories
Trace atmospheric moisture reacts aggressively with lithium salts to synthesize corrosive HF acid. DryAir's turnkey systems maintain supply air at -40°C to -70°C dew point across electrode slitting, winding, and electrolyte filling modules.
Pharmaceutical & Biotechnology
Hygroscopic active ingredients (APIs), effervescent formulations, and capsule processing require cGMP-certified environments. Continuous rotary dehumidification prevents powder clumping, microbial growth, and batch rejections.
Defense, Avionics & Strategic Storage
Manufactured strictly according to China's GJB national military standard system. Protects missiles, radar guidance electronics, and aerospace munitions from moisture-induced oxidation, tin whisker proliferation, and dielectric breakdown.
Psychrometric Sizing Benchmark
Dew Point & Filtration Selection Matrix
Accurate psychrometric specification protects capital expenditure. Compare critical operating parameters across residential and heavy industrial climate systems.
| Application Sector | Air Purity Standard | Target Dew Point / RH | Core Technology Mechanism | Recommended System Line |
|---|---|---|---|---|
| Smart Home & Villa IAQ | ISO 16890 / PM2.5 ≤ 10μg/m³ | 40% – 50% RH (DP +10°C) | True HEPA + Cold Catalyst + Desiccant | Hybrid Home System |
| Li-ion Cell Assembly & Filling | Class 1,000 (ISO 6 Cleanroom) | -40°C to -60°C DP | Double-Rotor Silica Gel / Molecular Sieve | Turn-key Dry Room |
| Solid-State & Lithium Metal Cells | Class 100 (ISO 5 Cleanroom) | Down to -70°C DP | Multi-Stage Molecular Sieve Regeneration | DHU Desiccant Series |
| Cathode Electrode Coater Exhaust | Zero Particulate Bypass | ≥99% Recovery Yield | Multi-Stage Chilled Condensation + Scrubber | ZJRH NMP Recovery |
| Pharmaceutical Dry Powder & Sterile Pack | GMP Grade A/B (EU GMP Annex 1) | 10% – 25% RH | Bacteriostatic Desiccant Wheel + Deep Chill | Pharma Desiccant Unit |
| Industrial Storage & Food Warehousing | General Filtration MERV 11 | 45% – 60% RH | Scroll Compressor Refrigerative Condensation | Refrigerative Dehumidifier |
| Petrochemical & Hydrocarbon Terminals | ATEX / Zone 1/2 Certified | National Emission Limits | Cryogenic Deep Cooling + RTO Oxidation | VOC Abatement System |
Export Compliance & Global Operations
Engineering Depth, Verification & Turnkey Execution
Procuring from China requires audited validation of structural safety, pressure vessel integrity, electrical certifications, and lifecycle parts availability.
Tier-1 Export Certifications
Hangzhou DryAir manufactures units tailored directly to target jurisdictions: CE (Machinery Directive 2006/42/EC & Low Voltage), UL 1995 / UL 60335-2-40 for North America, CSA 22.2 for Canada, ASME Section VIII for pressure vessels, and EAC for the Eurasian Customs Union.
End-to-End Turnkey Delivery
Our 5-stage project lifecycle covers pre-sales psychrometric calculation, thermodynamic modeling, full in-house fabrication, on-site erection, and field commissioning with calibrated dew point mirrors. We maintain a full inventory of high-grade PPS silica gel rotors and direct-drive ECM blowers.
Global Field Service & SLAs
Overseas project owners benefit from our optional 2-year extended warranty and comprehensive maintenance agreements. We provide IoT-based telemetry for predictive filter clogging warnings, rotor wear monitoring, remote diagnostic triage, and dispatching experienced engineers globally.
Engineering Roadmap
Next-Generation Technology & Environmental Sustainability
Where air purification and humidity engineering is heading: low GWP natural refrigerants, metal-organic frameworks (MOFs), and AI thermodynamic balancing.
MOF Desiccant Matrices
Hangzhou DryAir's R&D team (including 6 PhDs and Master's material scientists) is pioneering the commercialization of Metal-Organic Frameworks. MOF-coated rotors desorb moisture at temperatures below 65°C—allowing regeneration using waste process heat or domestic solar hot water arrays.
Zero-ODP / Ultra-Low GWP Refrigerants
In accordance with the Kigali Amendment and EU F-Gas regulations, our domestic and commercial condensing stages are actively migrating to R290 (Propane) and R32, reducing global warming impact by over 75% compared to legacy R410a systems while delivering enhanced heat exchange efficiency.
Dynamic AI Climate Balancing
Equipped with microsecond sensor feedback, our cloud-linked control architecture continuously models room latent heat versus weather changes. Systems automatically modulate desiccant rotation speed and air velocity, preventing unnecessary regeneration firing and slashing plant electrical OPEX by up to 32%.
Procurement & Engineering FAQ
Frequently Asked Technical & Sourcing Questions
Comprehensive answers regarding dew points, project execution, customization options, and global warranties.
What is the lowest dew point a DryAir desiccant dehumidifier can achieve?
DryAir rotary desiccant dehumidifiers can control supply air down to a minimum of -70°C dew point. This level of extreme dry air is required for lithium-ion battery cell assembly, lithium-metal prototyping, electrolyte filling, and military missile avionics preservation.
Do you supply complete turnkey dry rooms for battery factories outside China?
Yes. DryAir delivers complete turnkey dry room projects covering pre-sales consulting, thermodynamic calculation, modular enclosure fabrication, installation, balancing, and on-site dew point commissioning. We have successfully served global customers including Tesla, Northvolt, and TTI.
Which export certifications do DryAir climate systems hold?
Depending on the system configuration and destination country, DryAir products are supplied with CE, UL, CSA, ASME, and EAC certifications. Our factory operates under ISO 9001 quality management and the GJB national military standard certification.
What solvent recovery rate does the DryAir NMP system guarantee?
DryAir NMP (N-Methyl-2-pyrrolidone) recovery systems are engineered to achieve a continuous solvent recovery rate above 99% on lithium-ion electrode coating and drying production lines, significantly reducing solvent procurement overhead and volatile emissions.
What after-sales and warranty coverage is available for international buyers?
Overseas clients receive remote engineering diagnostic support, spare parts dispatch, and on-site commissioning. Customers can also opt for an extended two-year comprehensive international service agreement with guaranteed response times.
Can DryAir supply customized OEM/ODM home air purifier dehumidifier units?
Yes. In addition to megawatt-scale industrial dry rooms, our Hangzhou manufacturing facility produces modular commercial and residential whole-house air purifiers and hybrid dehumidifiers with custom chassis, filtration arrays, and smart IoT control modules.
Direct Sourcing Catalog
Certified Production Equipment Lines Ready for Shipment
Shortlist our field-proven commercial, residential, and industrial desiccant air treatment systems for your procurement tender.
Rotary DHU
Ultra-Dry Rotary Desiccant Dehumidifier
Engineered for lithium cell production, cold-chain processing, and military storage down to -70°C dew point.
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Turnkey Dry Room
Modular Giga-Scale Dry Room Enclosure
Complete hermetically sealed paneling with specialized interlocks, air showers, and integrated HVAC low-dew-point AHUs.
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Solvent Recovery
Electrode Coating NMP Recovery Unit
Deep chilling condensation array delivering ≥99% pure solvent capture, drastically lowering lithium plant raw material costs.
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VOC Treatment
Catalytic & RTO VOC Abatement Plant
Converts hazardous VOC exhausts and industrial solvent fumes into clean CO2 and water vapor with internal heat regeneration.
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Pre-Cooling Stage
Industrial Warehouse Refrigerative Dehumidifier
Heavy-duty compressor condensation units designed for high-humidity pre-cooling stages and bulk warehouse climate control.
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Smart Domestic
Residential Air Purifier & Dehumidifier Station
Compact, whisper-quiet home air management system combining H13 HEPA dust/odor purification with continuous low-temp drying.
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Military Grade
GJB Military Anti-Corrosion Environmental System
Heavy-gauge stainless steel construction engineered to protect defense electronics, munition depots, and submarine hulls.
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Gas Separation
Oil & Fuel Gas Condensation Recovery System
Recovers high-value petroleum and fuel vapors during loading dock, ship terminal, and fuel farm transfers before atmospheric venting.
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