-70°C DP
Desiccant Dehumidifier
DHU series rotary systems utilizing composite honeycomb silica-gel/molecular rotors to secure ultra-dry atmospheres beyond standard refrigeration thresholds.
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Engineered Fleet: Primary Solutions
State-of-the-Art Rotary Dehumidification Systems
Precision environmental equipment built to eliminate moisture failure in gigafactory battery assembly, biopharma synthesis, and high-altitude defense applications.
-70°C DP
Turnkey EPC
Turn-key Dry Room System
Complete engineered envelope, air-handling cascade, sealing mechanics, and micro-dew point sensing arrays delivered for giga-scale battery manufacturing.
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Recovery ≥99%
NMP Recovery System
Proprietary deep-condensation loops coupled with high-efficiency zeolite concentration to harvest pure N-Methyl-2-pyrrolidone solvent from electrode exhaust.
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Condens + RTO
VOC Abatement System
Combines multi-stage cryogenic separation with regenerative thermal oxidation (RTO) to neutralize hazardous petrochemical and solvent exhaust safely.
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High Efficiency
Refrigerative Dehumidifier
Industrial-grade refrigeration condensers configured for bulk latent load handling, prep-stage air drying, and moisture control across large storage footprints.
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Cell Assembly
Electrode Drying System
Ultra-dry forced airflow drying tunnels integrated directly into high-throughput cell stacking and wind lines with continuous dew point telemetry.
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Dual Rotor
Two-Stage Molecular Sieve DHU
Cascaded dual-wheel configuration engineered specifically for solid-state cell labs, achieving sustained Dew Points beneath -70°C without ice bridging.
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GJB Military Standard
Defense Preservation Unit
Heavy-duty anti-corrosion desiccant system engineered to meet strict military standards for weapon depot preservation and naval vessel maintenance.
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Manufacturing Capability
China Factory 4.0: Supply Chain Resilience & Delivery Scale
At Hangzhou DryAir Treatment Co., Ltd. (operating since 2010), our advanced Qingshan Industrial Park facility guarantees unmatched throughput and lead time security across global supply chains.
200+ Unit Monthly Throughput
Our standardized modular fabrication lines can assemble, wire, and pre-commission over 200 heavy industrial desiccant air handling units per month, supporting multi-gigawatt gigafactory rollouts simultaneously without project slippage.
In-House Microclimate Test Chamber
Prior to containerized export, every single rotary system is tested inside our calibrated performance verification suite. Psychrometric performance curves, airflow resistance, and leakage limits are confirmed via computer telemetry.
Precision Core Component Sourcing
We maintain direct strategic partnerships with world-class rotor media fabricators and drive manufacturers. Our localized upstream integration protects overseas contractors from unexpected raw material shortages or geopolitical supply delays.
Mission Critical Environments
Macro-Industry Solutions: Where Humidity Failure Is Unacceptable
Moisture in ultra-clean processes creates immediate catastrophic degradation. Our specialized desiccant wheel geometry and thermodynamic regeneration systems maintain stable parameters around the clock.
Lithium-Ion & Solid-State Batteries
Water vapor reacts violently with electrolyte salts (such as LiPF6), synthesizing hydrofluoric acid (HF) which dissolves active material and destroys cell life. Our -40°C to -70°C dew point dry rooms guarantee zero electrochemical degradation during filling and winding.
Defense, Military & Aerospace
Certified under the stringent GJB national military standard, our preservation equipment protects long-term missile storage, avionics maintenance depots, and naval holds from pitting corrosion and mold growth by holding relative humidity strictly below 40% RH.
cGMP Pharmaceutical & Biologics
Effervescent tablets, powder compounding, and gelatin capsules absorb ambient vapor instantly, causing clumping and batch loss. DryAir's sanitized desiccant circuits maintain 10%–30% RH while adhering strictly to FDA cleanroom envelope compliance.
Petrochemicals & VOC Scrubbing
Our ZJRH and JEN systems combine high-efficiency condensation loops with Regenerative Thermal Oxidizers (RTO) to strip explosive oil vapors, benzene, and toxic VOCs from chemical loading berths, delivering clean exhaust and solvent recapture rates exceeding 99%.
-70°C
Controllable Supply Dew Point
≥99%
NMP Solvent Recovery Rate
30%+
China Desiccant Market Share
74
HVAC PhDs, Masters & Engineers
R&D Architecture
Technology Roadmap & Energy Optimization Horizon
As gigafactories expand to terawatt scale, dehumidification can represent over 30% of dry room utility expense. Our engineering lab is actively commercializing next-generation energy recovery and thermal cycles.
Thermodynamic Heat Pump Regeneration
Traditional desiccant wheels require massive electric or steam heating to drive desorptive regeneration at 120°C–140°C. DryAir is transitioning systems to integrated CO2 transcritical heat pumps, slashing continuous thermal regeneration loads by up to 42%.
Nanostructured MOF Rotary Media
Partnering with advanced material institutes, our next-generation rotors incorporate Metal-Organic Frameworks (MOFs). These crystal lattices exhibit ultra-steep water uptake isotherms, enabling high desorption capacity at regeneration temperatures under 75°C.
Edge AI Psychrometric Forecasting
Our units feature embedded edge microcontrollers running predictive sorption models. By monitoring ambient weather barometrics and shifting shift-worker latent loads, the system modulates regeneration burner output ahead of dew point spikes.
Engineering Decision Matrix
Buyer's Dew Point Technical Selection Guide
Over-specifying humidity controls incurs unnecessary capital and utility costs; under-specifying causes irreversible product degradation. Align your RFQ with validated industrial requirements:
| Industrial Application | Critical Dew Point / RH Target | Primary Physical Risk Prevented | Recommended System Hardware |
|---|---|---|---|
| Lithium-Ion Cell Assembly & Filling | -40°C to -60°C DP | Hydrofluoric acid (HF) formation; cell swelling | Turn-key Dry Room |
| Lithium Metal & Solid-State R&D | Down to -70°C DP | Spontaneous alkali oxidation; electrolyte hydrolysis | Desiccant Dehumidifier |
| Cathode Slurry Coating & Exhaust | ≥99% Solvent Recapture | Atmospheric VOC pollution; toxic solvent loss | NMP Recovery System |
| Pharma Powders, Gelcaps & Compounding | 10% – 30% RH (±1%) | Powder caking; capsule shell softness; bacterial bloom | Desiccant Dehumidifier |
| Ammunition & Avionics Storage | ≤40% RH (GJB Compliant) | Propellant degradation; micro-circuit oxidation | Defense System |
| Raw Material Bulk Logistics & Pre-Cooling | 45% – 60% RH | Condensation drips; packaging structural collapse | Refrigerative Dehumidifier |
| Petrochemical Loading & Chemical Storage | Strict Emission Limits | Fugitive hydrocarbon vapors; flammability hazard | VOC Abatement System |
Global Field Assurance
Worldwide Compliance & Turnkey Overseas Commissioning
Exporting desiccant infrastructure requires navigating complex regional electrical and pressure standards. DryAir equipment comes fully certified for plug-and-play installation worldwide.
International Certifications: UL, CE, CSA, ASME, EAC
We design and certify complete control enclosures and pressure vessels to match customer destinations—including UL 508A for the USA, CSA for Canada, CE/PED for Europe, and EAC for the Eurasian Union.
Proven by Tier-One Battery Leaders
Our project teams have successfully deployed turnkey dry rooms and desiccant units for CATL, ATL, BYD, EVE Energy, Farasis, Envision, SVOLT, as well as prestigious international clients such as Tesla, Northvolt, and TTI.
On-Site Erection & 2-Year Overseas Care
DryAir dispatches experienced HVAC commissioning engineers to oversee envelope sealing, duct balance, dew point sensor calibration, and operator training, backed by an optional 2-year warranty and round-the-clock remote diagnostic support.
Procurement & Technical Q&A
Frequently Asked Questions by Global Engineering Teams
In-depth insights into performance boundaries, commissioning protocols, and life-cycle economics when sourcing desiccant dehumidifiers from China.
What is the minimum sustainable dew point DryAir desiccant systems deliver in continuous 24/7 operation?
DryAir standard DHU series industrial desiccant rotary dehumidifiers comfortably achieve and sustain supply air temperatures down to -70°C dew point (equivalent to less than 0.0033 grams of moisture per kilogram of dry air). For lithium battery cell assembly, pouch cell sealing, and electrolyte filling cleanrooms, our multi-stage molecular sieve configurations ensure this low dew point is held without fluctuation even as worker shifts rotate and exterior ambient conditions vary.
Does DryAir provide full turnkey EPC cleanroom contracts outside of China?
Yes. We provide complete Turn-key Dry Room Systems encompassing initial HVAC load calculation, 3D BIM ducting modeling, enclosure panel fabrication with specialized non-hygroscopic core insulation, airtight interlocking airlocks, refrigeration chillers, desiccant air handling units, PLC smart controls, installation supervision, and on-site dew point validation. We have delivered successful overseas dry room projects for clients like Tesla, Northvolt, and TTI.
How does DryAir's NMP recovery system achieve a solvent recapture rate exceeding 99%?
Our ZJRH NMP recovery units implement a multi-stage closed-circuit thermodynamic cycle. The high-temperature solvent-laden exhaust from battery electrode coating ovens passes first through an air-to-air energy recovery heat exchanger, then enters dual-stage chillers where NMP condenses out at dew points below ambient. The residual exhaust is scrubbed using zeolite concentration rotors, driving total solvent recapture rates to ≥99% while returning clean, pre-heated air back into the coater to minimize plant energy draw.
What export certifications and electrical standards do your machines adhere to?
Depending on destination requirements, DryAir custom builds equipment under CE (Machinery & Low Voltage Directives), UL 508A for North American panel safety, CSA for Canadian installations, ASME Section VIII for high-pressure vessels, and EAC compliance for EAEU territories. Furthermore, our corporate manufacturing infrastructure operates rigorously under ISO 9001 quality management and the national GJB military standard framework.
What post-commissioning and spare parts support is available to overseas buyers?
International clients receive comprehensive remote diagnostics via secure industrial IoT gateways, enabling our Hangzhou engineering center to audit real-time rotor pressure drops, regeneration temperatures, and dew points. We stock critical spare parts (drive motors, silicon seal strips, filtration elements) for expedited international dispatch and offer an optional comprehensive 2-year on-site field maintenance program.
Engineered Fleet: Extended Series
Specialized Humidity & Environmental Control Units
Select from our proven, pre-engineered desiccant rotary models and environmental recovery systems ready for global deployment.
Multi-Rotor
High-Volume Desiccant Dehumidifier
Engineered for large-scale airflow handling up to 100,000 m³/h, delivering uncompromised humidity extraction across pharmaceutical clean rooms.
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Modular Dry Room
Turnkey Cell Pilot Line Dry Room
Fast-track modular dry room structure with integrated air cascade and dehumidification tailored for battery pilot research laboratories.
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Closed Loop NMP
Electrode Coating NMP Recovery
Heavy-capacity industrial recovery skid configured for multi-lane battery electrode coaters, ensuring continuous zero-emission compliance.
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Zeolite + RTO
RTO Thermal VOC Abatement
Three-bed regenerative thermal oxidation system paired with adsorption concentrators for volatile hydrocarbon neutralization.
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Commercial Air
Pre-Cooling Refrigerative Dehumidifier
Direct expansion coil dehumidifiers deployed in series ahead of desiccant rotors to maximize thermodynamic drying efficiency.
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cGMP Certified
Pharma Grade Compact Dehumidifier
Stainless steel exterior casing, wash-down capability, and HEPA-integrated supply fans designed for sterile medical packaging.
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Deep Chilling
Oil Gas Condensation System
Cryogenic condensation technology recovering volatile petroleum hydrocarbons during transport tanker transfers and marine bunkering.
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Naval Storage
Marine Desiccant Preservation Unit
Salt-spray resistant casing with high-torque gear drive engineered to operate in offshore and coastal naval installations.
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Accelerate Your Project Timeline
Collaborate With China's Foremost Dew Point Engineers
Whether you are planning a 50 GWh lithium battery gigafactory dry room, upgrading pharmaceutical powder handling lines, or deploying NMP recovery units, our technical engineering team delivers comprehensive psychrometric modeling within 24 hours.