Explore eight core industrial systems designed for continuous, high-efficiency moisture removal and solvent recovery across critical cleanroom environments.
DP -70°C Control
DHU series rotary adsorption system delivering ultra-dry process air down to -70°C dew point for lithium battery and military applications.
Turnkey EPC
Full-envelope cleanroom integration with ultra-low humidity air balancing, airtight envelope architecture, and BMS controls.
Recovery ≥99%
ZJRH series solvent recovery unit engineered for battery cathode coater exhausts, reducing raw material waste and volatile emissions.
Cooling + RTO
Multi-stage deep cooling condensation combined with Regenerative Thermal Oxidation (RTO) for chemical emission compliance.
OEM Custom Sizing
Precision modular rotor cassettes fitted with silicone perimeter seals and chain-drive mechanisms for harsh industrial duty.
Modular Construction
Factory-prefabricated insulated panel envelope with interlocked airlocks, conductive flooring, and integrated low-dew-point ducts.
Ex-Proof ATEX
Cryogenic and deep-condensation systems for volatile hydrocarbon and fuel loading vapor recovery with explosion-proof certification.
Energy Hybrid
Primary pre-cooling dehumidification units that strip heavy latent moisture loads ahead of the desiccant rotor stage.
In advanced manufacturing environments—such as lithium-ion battery cell winding, electrolyte injection, and semiconductor lithography—conventional mechanical refrigeration reaches an insurmountable physical barrier at the 4°C to 6°C dew point range due to evaporator coil freezing.
Hangzhou DryAir Treatment Co., Ltd. resolves this fundamental psychrometric constraint through honeycomb matrix adsorption technology. Utilizing inorganic fiber substrates synthesized with synthesized zeolites (molecular sieves) and active silica gel, our rotary desiccant dehumidifiers adsorb water vapor molecules directly from the airstream down to an absolute moisture content below 0.0033 g/kg of dry air, translating to a supply air dew point of -70°C (1.4 ppmv).
Our multi-sector rotor cassettes divide the rotating matrix into a 3:1 or 4:1 ratio of process adsorption to thermal reactivation. The counter-flow reactivation air, heated to between 120°C and 160°C, vaporizes adsorbed moisture, which is expelled outdoors. Integrated purge zones between the desorption and process sectors reclaim sensible heat, decreasing operational thermal expenditure by up to 28.4% compared to traditional desiccant systems.
Stringent product quality thresholds, rising gigawatt-hour battery capacities, and tighter carbon emission standards are reshaping industrial HVAC procurement worldwide.
With hundreds of gigawatt-hours under construction globally, battery producers face immense energy expenditures. HVAC and dry room dehumidification typically account for 43% to 48% of total cleanroom energy consumption. Buyers require high-performance desiccant rotors with audited COP and heat recovery to meet strict ROI schedules.
Strict European REACH regulations and US EPA air quality thresholds require battery electrode drying lines to limit solvent loss. DryAir's closed-loop NMP recovery systems reclaim ≥99% of evaporated solvent while capturing waste heat to re-feed upstream desiccant regenerators, transforming environmental compliance into positive balance sheet assets.
Next-generation solid electrolytes (sulfide and halide systems) react violently with even single-digit parts-per-million moisture, creating hazardous H2S gas and instantly degrading conductivity. Our systems provide a certified foundation for -60°C to -70°C dew point dry rooms, ensuring an inert manufacturing environment.
Headquartered in Qingshan Industrial Park, Hangzhou, DryAir leverages the world's most concentrated industrial supply ecosystem to provide unmatched velocity and cost efficiency.
Our dedicated 35,000 m² production complex supports parallel gigafactory contracts simultaneously. We produce over 200 high-capacity industrial units per month without extending standard delivery cycles.
From automated CNC sheet-metal laser cutting and PU thermal-break panel foaming to custom rotor drive milling and electrical PLC cabinet assembly, 88% of unit fabrication occurs within our controlled facility.
Every industrial unit undergoes full-load psychrometric testing in our certified climate-simulation chamber prior to containerization, ensuring rotor balancing, air tightness, and dew point compliance.
Our regional supply ecosystem delivers a 30% to 45% CAPEX advantage over European and American legacy competitors while shortening equipment delivery lead times from 36 weeks to just 12–16 weeks.
Moisture risks vary fundamentally across sectors. We formulate thermodynamic solutions matching exact chemical reactions, hygroscopic thresholds, and room volumes.
During electrolyte filling and cell sealing, trace H2O decomposes LiPF6 salt into toxic, highly corrosive hydrofluoric acid (HF). DryAir dry rooms maintain supply air dew points from -50°C down to -70°C, preventing cell swelling, internal micro-shorts, and thermal runaway.
Explore Dry Rooms →Hygroscopic Active Pharmaceutical Ingredients (APIs), effervescent formulations, and soft gelatin capsules soften and agglomerate when relative humidity exceeds 20% RH. DryAir sanitary desiccant systems offer 316L stainless steel interiors with HEPA H14 filtration matching cGMP standards.
Pharma Dehumidifiers →Certified under China's GJB national military standard, our environmental systems prevent galvanic corrosion, avionics dampening, and propellant degradation in long-term military warehouses, naval hangars, and tactical radar shelters at steady ≤35% RH conditions.
Defense Solutions →Oil gas storage, chemical unloading terminals, and paint booths produce toxic fugitive VOC emissions. DryAir deep-cooling condensation combined with regenerative thermal oxidizers (RTO) captures high-density hydrocarbon vapors before discharge.
VOC Abatement →Extreme precision manufacturing demands unvarying moisture conditions. Moisture-induced micro-oxidation on wafer traces causes yield degradation. DryAir DHU systems guarantee cleanroom humidity tolerances within ±1% RH around the clock.
Request Spec Sheet →Air entering sub-zero cold stores creates severe frost accumulation on evaporators, floors, and conveyor lines. DryAir desiccant systems dry intake air down to -25°C DP, eliminating defrost downtime and slip hazards.
Cold Chain Systems →Reference psychrometric benchmarks to configure system capacities, reactivation heating requirements, and envelope sealing parameters.
| Industrial Process | Target Air Moisture | Permissible Leakage | Standard Regeneration Source | Recommended DryAir Solution |
|---|---|---|---|---|
| Lithium-ion Cell Winding & Assembly | -45°C to -60°C DP | ≤ 0.05 room vol/hr | Steam / Thermal Oil / Electric | Turn-key Dry Room System |
| Solid-State / Lithium-Metal R&D | -65°C to -70°C DP | ≤ 0.02 room vol/hr | High-temp Electric / Waste Heat | DHU Ultra-Low DP Dehumidifier |
| Cathode Electrode Coater Exhaust | ≥ 99% Solvent Recovery | Airtight Duct Closed Loop | Process Condensation Cycle | ZJRH Series NMP Recovery |
| Effervescent Tablet & Dry Powder Vial GMP | 10% – 20% RH (-10°C DP) | ISO 14644-1 Cleanroom Cl. 7 | Low-pressure Steam / Hot Water | Sanitary Desiccant Air Handler |
| Ammunition & Avionics Storage (Military) | ≤ 35% RH (Ambient) | GJB Standard Enclosure | Electric PTC / Heat Pump Air | GJB Heavy-Duty Dehumidifier |
| Industrial Bulk Warehousing & Pre-cooling | 45% – 60% RH | Standard Industrial Enclosure | Direct Expansion Mechanical | Industrial Refrigerative System |
| Fuel Loading Terminals & Paint Exhaust | VOC < 20 mg/Nm³ | Negative Pressure Collection | Natural Gas Regeneration RTO | VOC Deep Cooling + RTO System |
Hangzhou DryAir Treatment is actively advancing decarbonized industrial air technology through dedicated academic partnerships and proprietary laboratory test benches.
By monitoring real-time outdoor absolute humidity, cleanroom worker occupancy shifts, and door cycling intervals, DryAir AI controllers dynamically adjust rotor RPM and regeneration heat in advance, trimming unneeded heating power by 18%–24%.
Developing ultra-low temperature desorption zeolites capable of regeneration using low-grade industrial waste heat (hot water from compressor jackets, coater exhaust, or district heating), dramatically cutting factory primary electric consumption.
Engineering third-generation multi-stage monolithic rotors tailored for industrial-scale all-solid-state lithium cell pilot lines requiring strict sub-parts-per-million moisture thresholds without vacuum glove boxes.
Next-gen hybrid heat pump desiccant packages that cycle zero exhaust to ambient atmosphere, recycling 100% of internal sensible and latent enthalpy within high-density urban pharmaceutical manufacturing clusters.
A rigorous five-phase project workflow ensuring precise air distribution, structural air-tightness, and guaranteed dew point stabilization under single-source accountability.
In-depth calculation of latent loads, personnel transmission, door opening cycles, and material hygroscopic release using custom psychrometric algorithms.
Computational Fluid Dynamics (CFD) simulation of cleanroom air paths to verify stagnant zone eradication and optimize duct pressure drop.
Sheet metal fabrication, rotor casing assembly, and rigorous Factory Acceptance Testing (FAT) with simulated load Dew Point verification.
On-site installation by certified HVAC site managers, dry room panel sealing, duct pressure testing, and Site Acceptance Testing (SAT).
24/7 cloud diagnostics, localized preventive maintenance, rapid spare rotor media dispatch, and optional 2-year extended warranty coverage.
Meeting and surpassing North American, European, and Eurasian regulatory standards for electrical safety, pressure vessels, and military environmental durability.
Compliant with Machinery Directive 2006/42/EC, Low Voltage Directive 2014/35/EU, and EMC Directive 2014/30/EU.
Certified to UL 1995 / CSA C22.2 for commercial heating and cooling equipment for direct North American grid integration.
Pressure vessels and heat exchanger coils stamped and registered in accordance with Section VIII Div 1 rules.
Conformity with Eurasian Customs Union technical regulations TR CU 010 (Machinery) and TR CU 020 (EMC).
Operating an audited ISO 9001 Quality System and the Chinese National Military Standard GJB 9001C-2017 framework.
Direct engineering answers addressing system sizing, energy recovery kinetics, international installation logistics, and warranty terms.
DryAir rotary desiccant dehumidifiers deliver stable supply air dew points down to a guaranteed minimum of -70°C (1.4 ppmv moisture) at 20°C supply temperature. This is achieved via two-stage or specialized multi-rotor configurations combining proprietary synthesized zeolite matrices with optimized intermediate cooling stages.
We operate an agile international EPC deployment protocol. DryAir dispatches certified site managers, mechanical specialists, and automation engineers directly to overseas client sites (with past installations for Tesla, Northvolt, and TTI). We coordinate all aspects of room erection, airtight testing, duct tie-in, sensor calibration, and SAT validation until the client receives official sign-off.
Our reactivation systems offer complete flexibility: direct electrical heaters (PTC / Incoloy), low- or high-pressure steam coils, direct- or indirect-fired gas burners, thermal oil heat exchangers, or hybrid circuits utilizing waste heat recovered from battery cathode exhaust coaters or industrial air compressor jackets.
Our ZJRH series recovers over 99% of pure N-Methyl-2-pyrrolidone solvent from coater exhausts. On typical 10 GWh battery electrode coating lines, reclaimed solvent value provides complete CAPEX payback within 8 to 14 months of continuous operation while eliminating environmental fine risks.
DryAir desiccant wheels use an inorganic ceramic fiber matrix that neither burns nor degrades when subjected to deep thermal cycles. The desiccant media can be washed with clean water or mild detergent if contaminated by fine atmospheric dust. With proper G4/F7 inlet pre-filtration, our rotors retain over 90% sorption capacity beyond 10–12 years of continuous service.
Overseas clients receive comprehensive support through our Global Service department. Options include an extended 2-year full-equipment maintenance warranty, local emergency spare part consignments (filters, drive belts, sensors, seal kits), and 24/7 remote IoT telemetry access for instant diagnostics.
Shortlist certified desiccant rotor equipment, turnkey cleanroom structures, and solvent abatement plants for your upcoming engineering tender.
DHU Series
Continuous adsorption system engineered to maintain stable -40°C to -70°C dew points in high-traffic production cleanrooms.
Complete EPC
End-to-end design, modular panel supply, desiccant air handling, and sensor validation for EV cell manufacturing.
Recovery ≥99%
Solvent extraction condensation plant designed for battery anode/cathode coating lines, cutting solvent procurement overhead.
JEN Series
High-destruction efficiency thermal oxidizer integrated with low-temperature condensation for chemical waste air purification.
Thermal Efficiency
Heavy industrial RTO plant designed for petrochemical vapors, coil coating, and printing solvents with maximum thermal return.
GJB Compliant
Heavy-duty anti-vibration mobile and fixed dehumidifiers for military hangars, ammunition vaults, and naval fleet storage.
cGMP Class
Sanitary low-RH conditioning unit with antimicrobial interior linings, washable rotor surfaces, and complete drainability.
High Efficiency
High-COP mechanical condensing dehumidifier for general industrial warehouses, food drying, and pre-cooling stages.
Provide your factory layout dimensions, ambient outdoor design criteria, and target cleanroom dew point. Our senior HVAC engineering team will deliver a comprehensive psychrometric calculation and project quote within 24 hours.
