-70°C DP
Desiccant Dehumidifier
Rotary sorption desiccant dehumidifier delivering stable low-dew-point environmental control where conventional refrigeration reaches physical limits.
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Product Catalog 01
High-Efficiency Dehumidification & Recovery Systems
Engineered solutions solving critical latent load risks across high-spec manufacturing lines.
-70°C DP
Turnkey EPC
Turn-key Dry Room System
End-to-end dry room enclosures, envelope hermetic sealing, air ducting, and dynamic dew point control under a single engineering warranty.
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≥99% Yield
NMP Recovery System
Continuous recovery of N-Methyl-2-pyrrolidone solvent from lithium battery electrode coating processes, cutting raw operational emissions.
System Details
Condensation + RTO
VOC Abatement System
High-efficiency regenerative thermal oxidizers (RTO) combined with deep-cooling condensators to manage dangerous organic volatile streams.
Abatement Solutions
Ultra-Dry Air
Industrial Desiccant Module
Custom-engineered desiccant wheel rotor systems integrated with regenerative heat matrix for mission-critical industrial manufacturing.
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Gigafactory Scale
Gigafactory Battery Dry Room
High-capacity airflow engineering designed specifically for EV pouch, cylindrical, and prismatic battery production cells.
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Zero-Emission
Solvent Recovery Unit
Industrial condensation unit designed for chemical terminals, fuel vapor management, and high-efficiency petrochemical separation.
Solvent Engineering
High Efficiency
Refrigerative Dehumidifier
Heavy-duty refrigerated moisture stripping systems suited for massive storage facilities, workshops, and pre-cooling stages.
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Macro Analysis
Global Industrial Humidity Control: The Gigafactory Paradigm
Why advanced dehumidification systems are no longer standard HVAC, but critical production capital equipment.
Cathode Degradation Prevention
In high-nickel ternary (NMC 811) and next-generation solid-state chemistry, ambient moisture triggers immediate hydrolysis. Water traces form corrosive hydrofluoric acid (HF) with LiPF6 electrolyte, ruining internal impedance and cell stability.
Stringent Global ESG & VOC Mandates
Environmental regulatory bodies in Europe and North America enforce near-zero operational discharge of toxic industrial solvents like N-Methyl-2-pyrrolidone. Modern closed-loop condensation-adsorption systems eliminate plant-wide regulatory halts.
OPEX Energy Decoupling
Industrial dehumidification represents 35% to 45% of total electric utility draw in clean dry rooms. Replacing dated direct thermal reactivation with multi-stage heat recovery systems prevents unsustainable production costs.
Application Engineering
Mission-Critical Applications for Ultra-Dry Moisture Control
Each sector demands dedicated psychrometric calculations designed around specific vapor pressure profiles.
Lithium Battery Production
Continuous maintenance of dry air at -40°C to -70°C dew point across jelly roll winding, vacuum baking, and automated electrolyte filling zones.
Biopharmaceutical Processing
Elimination of humidity contamination in GMP spaces for hygroscopic powder milling, gelatin encapsulation, freeze drying, and blister packaging.
Defense & Strategic Avionics
Military-grade air environmental protection according to GJB standards. Complete elimination of moisture-driven oxidation on sensitive components.
Semiconductor Cleanrooms
Ultra-clean relative humidity balancing during photolithography, wafer storage, and thin-film deposition to stop condensation defects.
-70°C
Controllable Dew Point
≥99%
NMP Solvent Recovery
30%+
China Market Share
200+
Units / Month Output
74
R&D Engineers & Specialists
Supply Chain Advantage
Why Sourcing From Hangzhou DryAir De-Risks Global Projects
Full vertical manufacturing integration eliminates third-party component bottlenecks.
Integrated Mechanical Fabrication
From sheet metal CNC bending and leak-free laser welding to specialized molecular sieve rotor integration, all structural and thermal assemblies are manufactured in-house at our Qingshan Industrial Park facility in Hangzhou.
Tier-1 Global Customer Audits
Verified through repetitive plant qualification audits by leading battery manufacturing giants including CATL, ATL, BYD, EVE Energy, Envision, SVOLT, and overseas pioneers like Tesla, Northvolt, and TTI.
Accelerated EPC Delivery Timelines
With an active capacity exceeding 200 high-capacity industrial units per month, multiple modular dry room phases can be fabricated, tested, and dispatched in parallel, cutting project lead times by 30–45% compared to regional assemblers.
Technology Roadmap
Engineering the Next Era of Industrial Moisture Removal
Developing next-generation desiccant matrices and AI-driven thermal reactivation cycles.
MOF Hybrid Adsorbents
Transitioning from pure silica gel and traditional molecular sieves to metal-organic frameworks (MOFs). These nanostructured materials exhibit significantly higher volumetric water capacity and desorb moisture at regeneration temperatures under 85°C.
AI Psychrometric Optimization
Integrated neural algorithms process real-time barometric pressure, external latent moisture spikes, and production personnel load. The control architecture continuously adjusts rotor rotation speed and heaters, preventing over-dehumidification.
Industrial Waste Heat Utilization
Direct coupling of desiccant regeneration modules to high-temperature factory exhaust, heat pumps, or co-generation steam matrices. This closes the energy loop and reduces reliance on primary electrical heater banks by up to 50%.
Engineering Selection Matrix
Dew Point Selection Guide by Technical Application
Specifying target dew points directly correlates to capital equipment scale and plant operating budgets.
| Application Scenario | Target Air Parameter | Critical Engineering Risk Mitigated | Recommended System |
|---|---|---|---|
| Lithium-ion Cell Assembly & Filling | -40°C to -60°C DP | Hydrofluoric acid (HF) formation; cell gassing; electrolyte loss | Turn-key Dry Room System |
| Solid-State & Lithium Metal R&D | Down to -70°C DP | Immediate lithium passivation; chemical breakdown | Desiccant Dehumidifier (DHU) |
| Electrode Coating & Drying Exhaust | ≥99% Solvent Yield | Environmental non-compliance; costly virgin solvent purchases | NMP Recovery System |
| Hygroscopic Pharma & Softgels | 10% to 30% RH | Powder caking; microbial growth; softgel deformation | Rotary Desiccant Unit |
| Ammunition & Avionics Storage | ≤40% RH (GJB Std) | Corrosive degradation; propellant instability | Desiccant Storage System |
| Raw Material Warehousing | 45% to 60% RH | Moisture adsorption on packaging; fungal proliferation | Refrigerative Dehumidifier |
| Chemical Vapor & Bulk Loading | Strict Emission Limits | Atmospheric VOC air pollution; explosive risks | VOC Abatement System |
International Standards
Global Compliance, Certification & On-Site Support
Full regulatory compliance ensures quick, hassle-free municipal plant commissioning worldwide.
Tier-1 Export Certifications
Every industrial unit leaves our factory configured to regional mechanical and electrical standards: CE Machinery & Low Voltage directives, UL 1995/508A for North American facilities, CSA for Canada, ASME pressure vessel codes, and EAC certification.
Turnkey On-Site Commissioning
We provide full field deployment support. Our senior engineers lead on-site installation supervision, system integration, envelope leak sealing verification, sensor calibration, and official performance qualification before handover.
Comprehensive SLA & Support
International clients can secure an optional 2-year extended complete parts-and-labor service agreement. It includes continuous remote telemetry diagnostics, on-demand spare rotor segments, and scheduled physical preventative maintenance audits.
Information Center
Frequently Asked Technical & Procurement Questions
Direct technical answers for HVAC engineering consultants, plant managers, and procurement leads.
What is the absolute lowest dew point reachable by Hangzhou DryAir rotary desiccant systems? +
Hangzhou DryAir desiccant dehumidifiers reliably achieve and maintain supply air down to -70°C dew point (equivalent to less than 0.0033 grams of moisture per kilogram of dry air). This satisfies the moisture-sensitive requirements of next-generation solid-state cell handling, pure lithium processing, and advanced microelectronics.
Can you provide complete turnkey dry rooms outside of China? +
Yes. We execute full turnkey projects worldwide, encompassing thermodynamic air system design, clean envelope construction, equipment manufacturing, overseas sea shipping, on-site mechanical erection, electrical wiring, system validation, and long-term service agreements. Our overseas clients include high-profile manufacturers like Tesla, Northvolt, and TTI.
What solvent recovery efficiency does the DryAir NMP system guarantee? +
Our ZJRH series NMP recovery system delivers a solvent recovery rate of 99% or greater from lithium battery electrode coater exhaust streams. This closed-loop condensation-adsorption system helps battery manufacturing lines comply with European and North American VOC limits while drastically cutting virgin solvent purchasing costs.
How does Hangzhou DryAir manage energy consumption in -70°C environments? +
Desiccant reactivation requires significant thermal energy. We optimize this through multiple recovery steps: exhaust waste-heat exchangers, selective rotor purge loops, variable-frequency fan drives, and heat integration options compatible with facility steam or secondary hot oil loops. These features reduce total energy use by 25% to 40% compared to non-heat-recovery systems.
Which quality and military management certifications apply to your factory production? +
Hangzhou DryAir operates under both the ISO 9001 International Quality Management standard and China's national GJB military product quality standard. Units destined for international facilities can be supplied fully certified to CE, UL, CSA, ASME, or EAC standards.
What lifecycle maintenance support is provided for international buyers? +
International customers can opt into our 2-year overseas service agreement. This program includes remote diagnostics, prioritized critical spare parts dispatch, guaranteed engineer on-site arrival windows, and full factory calibration audits to keep industrial equipment operating at peak efficiency.
Product Catalog 02
Comprehensive Industrial Dehumidifier Portfolio
Select the ideal model for your factory air treatment, cleanroom layout, or chemical recycling process.
Rotary DHU
Industrial Desiccant Dehumidifier
High-efficiency desiccant wheel rotor systems designed for continuous, high-volume air streams requiring low dew point stability.
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Complete EPC
Turnkey Dry Room Architecture
Complete custom room design, manufacturing, installation, and commissioning of humidity-controlled clean dry spaces.
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Solvent Capture
ZJRH Series NMP Unit
Automated recovery units built to capture and purify volatile NMP emissions from battery electrode drying lines.
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RTO System
JEN Series VOC Abatement
Advanced regenerative thermal oxidizers (RTO) and multi-stage condensation scrubbers for comprehensive plant compliance.
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Closed Loop
Electrode Coater Exhaust System
High-efficiency solvent separation engineered for high-speed continuous lithium slurry roll coating lines.
System Specs
GMP Grade
Pharmaceutical Dehumidifier
Sanitary-grade humidity control units built for active pharmaceutical ingredient (API) packaging and formulation areas.
Pharma Solutions
GJB Standard
Military & Strategic Dehumidifier
Heavy-duty, vibration-resistant environmental control systems engineered to prevent corrosion across critical arsenals and avionics bays.
Defense Solutions
OEM / ODM
Refrigerative Industrial Unit
Cost-effective initial moisture reduction for large logistics hubs, workshops, and pre-cooling stages ahead of desiccant rotors.
Refrigerative Line
Engineering Direct Collaboration
Request a Custom Engineering Sizing Proposal
Planning a gigafactory, pharma cleanroom, or battery drying upgrade? Share your room envelope dimensions, infiltration loads, and target dew points. Our senior application engineers will return a complete psychrometric calculation and system sizing model within one business day.