DP -70°C
Rotary Desiccant Dehumidifier
DHU series rotary desiccant systems delivering ultra-dry microclimates where refrigeration cannot reach.
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Engineered Product Catalog
Featured Industrial Dehumidification & Air Recovery Systems
Explore our top industrial-grade solutions engineered for precision humidity mitigation, extreme low dew point processing, and solvent emissions control.
DP -70°C
Turnkey EPC
Turn-key Dry Room System
Complete humidity-controlled enclosures, HVAC ducts, structural panels, and control loops under a single SLA.
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Purity ≥99%
NMP Solvent Recovery System
Closed-loop solvent recovery for lithium-ion battery electrode coating lines, minimizing emissions and re-purchase costs.
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RTO Integrated
Industrial VOC Abatement System
Deep-cooling condensation coupled with regenerative thermal oxidation for volatile organic chemical abatement.
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High Efficiency
Refrigerative Dehumidifier
Energy-optimized condensing dehumidifiers designed for bulk moisture extraction, raw storage, and pre-cooling.
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Ultra-Dry Air
Modular Ultra-Dry Cabin
Self-contained micro-climate chambers engineered for prototype lines and solid-state electrolyte synthesis.
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Dual-Rotor
Dual-Rotor Dehumidification Unit
Two-stage desiccant configuration optimizing regeneration energy via low-grade industrial waste heat utilization.
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Mil-Spec GJB
Defense Anti-Corrosion Systems
Ruggedized interior dehumidifier platforms manufactured to national defense standards for aviation and munitions storage.
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Strategic Industrial Capabilities
Engineering Leadership & China Tier-1 Factory Advantages
Hangzhou DryAir Treatment Co., Ltd. leverages an integrated industrial supply chain, advanced thermo-fluid simulation, and unmatched manufacturing scale to eliminate total cost of ownership barriers.
Full Supply Chain Synergy
Located in the Yangtze River Delta industrial cluster, DryAir integrates precision sheet metal fabrication, rotor coating, and thermodynamic testing in-house. This direct supply control slashes procurement lead times by 40% compared to Western counterparts.
Rigorous Psychrometric Auditing
We house state-of-the-art climate test chambers capable of simulating extreme tropical humidity and sub-zero incoming air. Every industrial dehumidifier runs full-load thermal trials before outbound logistics validation.
Gigafactory-Scale Production
With a throughput exceeding 200 high-capacity dehumidification units per month, DryAir delivers concurrent phase deliveries for massive gigawatt-scale production sites without compromising construction timetables.
Defense & International Standards
Operating dual quality management protocols under ISO 9001 and the GJB national military specification, our systems conform with CE, UL, CSA, ASME, and EAC regional compliance requirements for international deployments.
Elite HVAC Engineering Bench
Our engineering core features 74 R&D specialists, including doctoral and master’s researchers, alongside 2 national registered HVAC engineers, delivering rapid computational fluid dynamics (CFD) modeling for mission-critical client projects.
Industry Evolution & Macro Analysis
Emerging Dehumidification Trends & Next-Gen Solutions
As modern manufacturing transitions toward solid-state chemistry, biological cleanrooms, and stringent ESG mandates, desiccant air treatment technology is experiencing pivotal transformations.
Solid-State Battery Production
Next-gen sulfide and oxide electrolytes require sub-trace moisture conditions (-50°C to -70°C dew point) to prevent toxic hydrogen sulfide (H2S) generation, requiring hermetic enclosure engineering and ultra-deep rotary desiccant systems.
Low-OPEX Waste Heat Integration
Regeneration heat accounts for nearly 75% of dry room operational expenditure. The industry is pivoting to secondary thermodynamic recovery matrices that recycle hot exhaust air and integrate turbine steam or chiller heat rejection.
AI-Driven Predictive Climate Control
Traditional fixed-speed reactivation cycles are giving way to dynamic algorithm-driven automation. Real-time sensory tracking of human movement, door seals, and outdoor atmospheric flux automates rotor speed and heating loads.
VOC & NMP Regulatory Strictest Limits
Global environmental agencies demand near-zero solvent output. The pairing of low dew point interior dehumidifiers with high-efficiency closed-cycle NMP capture systems provides both factory atmospheric compliance and recycled resource efficiency.
Modular 'Plug-and-Play' Construction
Rapid industrial scaling favors skid-mounted and modular containerized interior desiccant dehumidifier assemblies, allowing plant managers to commission functional clean dry spaces in weeks instead of months.
Engineering Psychrometric Guide
Localized Application Scenarios & Operational Dew Point Criteria
Precision environmental control requires tailoring the dew point and moisture balance directly to the physical chemistry of the treated product. Review the engineering standards below.
| Application Scenario | Moisture Vulnerability & Risk Matrix | Target Environmental Range | Recommended Machine Architecture | Key Implementation Value |
|---|---|---|---|---|
| Lithium-Ion Battery Assembly | Moisture exposure reacts with LiPF6 to form corrosive Hydrofluoric Acid (HF). | -40°C to -60°C DP | Turn-key Dry Room + DHU Dual Rotor | Prevents cell gassing and capacity drop. |
| Solid-State & Lithium-Metal Labs | Severe chemical breakdown upon exposure to water vapor in ambient air. | Down to -70°C DP | Low DP Desiccant Dehumidifier Unit | Maintains chemical purity and pilot reliability. |
| Electrode Slurry Coating & Exhaust | High atmospheric release of volatile N-Methyl-2-pyrrolidone solvent. | Solvent Recovery ≥99% | ZJRH Series NMP Recovery System | Slashes solvent purchasing expenditure. |
| Pharma Dry Powder & Capsules | Moisture adsorption causing agglomeration, mould, and packaging sealing failure. | 10% - 30% RH | Industrial Sanitary Desiccant Unit | Prevents tablet softening and caking. |
| Military Avionics & Ordnance Depots | Internal electrochemical corrosion of precision microelectronics and propellants. | ≤40% RH | Mil-Spec GJB Solid Desiccant System | Extends equipment field readiness cycle. |
| Industrial Warehouses & Pre-cooling | Bulk latent moisture load compromising raw product storage integrity. | 45% - 60% RH | Refrigerative Dehumidifier Platform | High coefficient of operational efficiency. |
| Chemical Petrochem Vapor Abatement | Fugitive hydrocarbon vapors expelled during high-volume transshipment. | Strict Emission Norms | Condensation Recovery + RTO System | Ensures full compliance with volatile emissions laws. |
Sourcing & Procurement Directives
What Global Enterprise Buyers Evaluate in Desiccant Providers
International procurement directors require comprehensive verification of long-term equipment stability, energy metrics, engineering accountability, and multi-market certifications.
Single-Point Accountability
Multinational battery and chemical conglomerates avoid fragmented subcontracting. Sourcing from a single-entity turnkey contractor covering design, thermodynamic calculation, chamber manufacturing, commissioning, and maintenance reduces project risk.
Energy Efficiency & Life Cycle Cost
Because HVAC accounts for the major share of operational expenses in clean manufacturing spaces, buyers scrutinize heat recovery technologies, reactivation thermal efficiency, and electrical power consumption per kilogram of water vapor extracted.
Multi-Jurisdiction Safety Validation
Export products must feature certified compatibility with local electrical and pressure vessel codes. DryAir machines comply with CE mark for Europe, UL and CSA for North America, ASME for pressurized sections, and EAC for Eurasian customs territories.
Overseas Field Service & Commissioning
Global sourcing teams require certified commissioning engineers capable of on-site international deployment, alongside an optional two-year overseas maintenance plan with immediate remote diagnostics and structured component inventories.
Technical Clarifications
Frequently Asked Technical & Sourcing Questions
Direct technical and commercial answers addressing common engineering queries regarding low dew point control, maintenance, energy optimization, and turnkey international delivery.
What is the lowest dew point a DryAir desiccant dehumidifier can achieve?
Hangzhou DryAir rotary desiccant dehumidifiers can control supply air down to a minimum of -70°C dew point. This level of moisture removal is critical for next-generation lithium cell assembly, solid-state electrolyte processing, and specialized aerospace research.
Do you supply complete turnkey dry rooms for battery factories outside China?
Yes. DryAir engineers and delivers complete turnkey dry room projects worldwide. Our end-to-end scope covers pre-sales thermodynamic consulting, system engineering, unit manufacturing, clean partition installation, field commissioning, and long-term preventive maintenance.
Which international safety and manufacturing certifications do your systems carry?
Depending on unit specifications and destination market, our equipment can be certified to CE (Europe), UL (USA), CSA (Canada), ASME (Pressure Vessels), and EAC (Eurasian Union). Our factory operations conform to ISO 9001 and the GJB national military quality standard.
What solvent capture efficiency does the DryAir NMP recovery system guarantee?
DryAir ZJRH NMP solvent recovery systems achieve recovery efficiencies of ≥99% on lithium-ion cathode coating lines, significantly reducing solvent procurement overhead while ensuring compliance with stringent atmospheric discharge standards.
What after-sales service and warranty agreements are available to overseas buyers?
We provide remote diagnostics, factory-backed spare parts dispatch, and on-site engineering commissioning teams globally. Clients can also opt for an extended two-year comprehensive overseas warranty and preventive maintenance plan.
How does DryAir reduce reactivation energy consumption in deep desiccant systems?
We integrate patented dual-rotor heat recovery circuits, condenser heat transfer systems, and flue/steam heat exchangers that capture waste heat from industrial facilities, reducing system electrical reactivation demands by up to 25% to 35%.
Procurement Portfolio
Explore Complete Industrial System Specifications
Select your desired air handling category below to review mechanical specifications, custom layout configurations, and technical documentation.
DHU Series
Industrial Rotary Desiccant Dehumidifier
Ruggedized silica gel and molecular sieve dehumidifiers engineered for uncompromised continuous humidity reduction.
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EPC Validated
Modular Battery Clean Dry Rooms
Turnkey atmospheric containment systems engineered specifically for high-capacity gigafactory operations.
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ZJRH Series
Closed-Cycle NMP Recovery Architecture
High-yield industrial condensative solvent extraction for battery electrode manufacturing processes.
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JEN Series
Regenerative Thermal Oxidation VOC Units
Thermal destruction and multi-stage condensation abatement systems eliminating industrial volatile gases.
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Pre-Cooling Stage
Refrigeration Condensing Air Dryers
Engineered for warehouse bulk humidity management and energy-efficient pre-treatment ahead of desiccant wheels.
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GMP Compliant
Sanitary Pharmaceutical Dehumidifiers
Hygienic stainless steel dehumidification stations designed for gelatin encapsulation and powder packing suites.
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Vapor Recovery
Oil & Fuel Gas Condensation Recovery
Dedicated condensation systems built for hydrocarbon capture during transshipment and tank rack transfers.
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Engineering Hub
Custom OEM & Skid System Integration
Custom mechanical, piping, and electrical integration tailored precisely to international client footprints.
Consult an EngineerLooking to Size a Custom Interior Desiccant System?
Send your facility layouts, target dew points, and airflow requirements to our registered HVAC engineering team for custom thermodynamic modeling.