DP -70°C
Desiccant Dehumidifier
DHU series rotary systems engineered for low-dew-point processes, battery cleanrooms, and moisture-critical duct applications.
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Tesla
Northvolt
CATL
ATL
BYD
EVE Energy
Farasis
Envision
SVOLT
TTI
Tesla
Northvolt
CATL
ATL
BYD
EVE Energy
Farasis
Envision
SVOLT
TTI
Primary Equipment Showcase
Engineered Ceiling Mounted & Industrial Systems
High-duty rotary, ducted, and solvent containment machinery custom-fabricated in Hangzhou to solve complex atmospheric demands.
DP -70°C
EPC Validated
Turn-key Dry Room System
Complete modular environmental envelopes with ductwork, air handlers, and integrated desiccant cores built to strict cleanroom codes.
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Recovery ≥99%
NMP Recovery System
ZJRH series capturing N-Methyl-2-pyrrolidone from coater exhaust, balancing heat recovery and emission mitigation.
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Deep Cooling + RTO
VOC Abatement System
Condensation systems paired with Regenerative Thermal Oxidizers (RTO) for chemical solvent safety and emission compliance.
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High Efficiency
Refrigerative Dehumidifier
Direct-expansion compressor dehumidifiers designed for general workshop ducting, warehouse storage, and AHU pre-cooling.
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Ceiling Mounted
Ceiling Mounted Duct AHU
Space-saving suspended duct systems offering precision temperature-humidity trimming without taking up square meters of production floor.
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Silica Gel / Molecular
Ultra-Low Dewpoint Rotor
Dual-rotor cascading dehumidification engineered to handle latent load spikes in next-generation solid-state battery plants.
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Hazardous Area Ready
Oil Vapor Condensation Unit
Explosion-proof ducted exhaust systems configured for petroleum vapor, fuel terminals, and chemical loading environments.
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Industry Macro Intelligence
Ceiling Mounted Duct Dehumidification: Evolution & Sourcing Shift
Why modern industrial facilities are shifting from floor-standing bulky infrastructure to suspended, high-efficiency ceiling ducted climate architecture.
Footprint Maximization
Cleanroom real estate costs anywhere between $1,500 to $4,500 per square meter in North America and Western Europe. Overhead ceiling-mounted ducted units eliminate equipment footprint, allowing 100% of usable floor plate space to be dedicated to productive tooling and automation lines.
Psychrometric Air Delivery
Ducted ceiling installations provide continuous negative or positive static pressure envelopes. Direct duct connections prevent stratified microclimates, channeling uniform ultra-dry air right over processing points such as pouch-cell winding and blister packaging.
Energy Decoupling & OPEX
Legacy mechanical chillers overcool the air stream to achieve dew points, followed by intensive reheat stages. Hangzhou DryAir integrates chemical sorption desiccant rotors directly into duct arrays, decoupling sensible heat management from latent moisture capture to reduce OPEX by up to 34%.
China Factory 4.0 Advantage
Supply Chain Resilience & Precision Manufacturing
Hangzhou DryAir combines vertically integrated sheet metal, automated laser welding, dynamic rotor balancing, and end-to-end quality validation.
-70°C
Lowest Controllable Dew Point
≥99%
NMP Solvent Recovery Ratio
30%+
China Domestic Market Share
200+
Finished Units Produced / Month
74
In-House Engineers & Technicians
GJB National Military Standard
We hold rigorous defense certifications in China alongside civilian ISO 9001 standards. Every ceiling duct casing undergo rigorous air tightness leak testing, dynamic acoustic dampening evaluations, and seismic resistance testing before dispatch.
Full Material Traceability
From SS304/SS316 surgical stainless duct enclosures to premium Japanese/Swedish silicate adsorbent wheels, all raw materials undergo optical spectrographic verification and rigorous component verification.
AIoT Intelligent Remote Diagnostic
Units are built with optional Modbus, BACnet, or Ethernet-based telemetry modules. Real-time dew point fluctuations, regeneration heater cycles, and airflow velocities are monitored via AI predictive diagnostics to eliminate downtime.
Technical Procurement Benchmark
System Engineering Specifications by Sector
Clear parameters ensure your EPC contract or tender specifications align with optimal capital allocation and strict thermodynamic tolerances.
| Target Application | Typical Dew Point / RH | Recommended Duct Configuration | Dominant Sorption Medium | Global Direct Link |
|---|---|---|---|---|
| Lithium-Ion Cell Assembly & Electrolyte Filling | -40°C to -60°C DP | Dual-Rotor Ceiling Suspended / Ducted | Polymer-Silicate Synthesized Wheel | View Dry Rooms |
| Next-Gen Solid State & Lithium-Metal Cells | Down to -70°C DP | Cascaded Multi-Stage Duct Array | High-Purity Molecular Sieve Matrix | View Desiccant |
| Cathode/Anode NMP Coater Lines | ≥99% Solvent Catch | Exhaust Duct Condenser + Purge Loop | Chilled Heat Exchanger + Adsorption | View NMP Units |
| Pharmaceutical Packaging & Tablet Compressing | 10% – 30% RH | Ceiling Mounted Ducted Air Handler | Silica Gel Active Rotor | View Pharma Spec |
| Ammunition & Avionics Storage (Military) | ≤ 40% RH | Overhead Heavy-Duty Galvanized Casing | Active Desiccant Substrate | View Defense Systems |
| Logistics Warehouses & Pre-Treatment | 45% – 60% RH | Suspended Direct Expansion (DX) Duct | Refrigerant Condensing Coil | View Refrigerative |
| VOC Treatment & Fuel Terminal Vapors | EPA / EU Limits | Integrated RTO + Multi-Stage Chill Loop | Thermal Ceramic Honeycomb Bed | View Abatement |
Global Case Profiles
Localized Application Scenarios & Mechanical Layouts
Real-world deployment scenarios illustrating how duct-coupled ceiling units solve extreme environmental challenges across major commercial centers.
Electric Vehicle Battery Dry Rooms
Serving tier-1 gigafactories (Tesla, CATL, Northvolt). In electrolyte injection suites, moisture above 100 ppm hydrolyzes LiPF6 salts into lethal hydrofluoric acid (HF). Suspended ceiling duct arrays deliver positive pressure cleanroom laminar airflow holding down to -60°C DP across multi-hectare production lines.
Hygroscopic Pharma & Bio-Processing
In solid oral dose, effervescent tableting, and soft capsule drying tunnels, airborne moisture creates agglomeration and powder caking. Ducted overhead ceiling systems distribute micro-filtered, HEPA-compliant dry air directly to fluid bed dryers and blistering machines, preventing product spoilage.
Semiconductors & Photolithography
Wafer fabrication zones require sub-micron contamination control paired with stringent humidity constraints to protect thin-film chemical vapor deposition (CVD). Ceiling duct air-conditioning ensures micro-environments stay precisely regulated with minimal acoustic or mechanical vibration transfer.
R&D Technical Articles
Knowledge Base: Design, Commissioning & Optimization
Field-tested insights authored by Hangzhou DryAir HVAC specialists for plant managers, system architects, and global procurement officers.
Oil Gas Condensation Mechanics in Industrial Ducts
How deep multi-stage refrigeration systems recover hydrocarbons during solvent tank loading, preventing volatile atmospheric discharge while recycling expensive feedstocks.
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Continuous NMP Recovery in High-Speed Coating
Balancing thermal mass and condensation efficiency in round-the-clock roll-to-roll electrode processing to maintain ≥99% solvent reclamation ratios.
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Managing Latent Infiltration in Cleanroom Packaging
A psychrometric audit guide detailing personnel moisture load, air lock pressure deltas, and optimal ceiling duct diffuser selection to avoid microbial bloom.
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Direct Clarifications
Frequently Asked Questions by Global Buyers
Technical, contractual, and operational answers addressing international procurement criteria.
What is the lowest dew point a DryAir ceiling mounted duct dehumidifier can achieve?
Hangzhou DryAir rotary desiccant systems are engineered to control supply air down to a minimum of -70°C dew point (equivalent to less than 0.002 g/kg moisture content). This matches the most stringent requirements for solid-state battery R&D, lithium cell assembly, and aerospace test cells.
Do you deliver complete turnkey dry room projects outside China?
Yes. We execute full EPC turnkey projects globally—including pre-sales computational engineering, dynamic psychrometric layout, precision fabrication, ocean freight logistics, on-site duct erection, commissioning, and final validation. We have delivered systems for international customers including Tesla, Northvolt, and TTI.
Which international quality and electrical certifications do your units carry?
All equipment can be custom-wired and certified to match your jurisdiction's standards, including CE (LVD/MD/EMC) for the European Union, UL/CSA standards for North America, ASME boiler and pressure vessel codes for condensers, and EAC marks for Eurasian regions. Our factory operates under ISO 9001 and GJB national military management protocols.
What solvent recovery efficiency does a DryAir NMP system guarantee?
DryAir NMP recovery systems are engineered to achieve an audited solvent recovery rate of ≥99% on lithium-ion electrode coating and drying exhausts. This significantly lowers raw material operational expenditure while ensuring compliance with stringent national and local VOC stack emission limits.
What after-sales and on-site commissioning services are offered internationally?
International clients benefit from remote telemetry diagnostics, continuous spare parts inventory fulfillment, and factory engineers dispatched for on-site commissioning. In addition to standard warranties, we offer an optional comprehensive 2-year overseas lifecycle maintenance service contract.
Industrial Solution Matrix
Factory-Direct Catalog: Ceiling & Industrial Systems
Review our high-efficiency standard and custom ducted configurations, complete with direct factory engineering support.
DP -70°C Control
Desiccant Dehumidifier
Continuous rotary dehumidification holding ultra-low humidity tolerances under heavy latent environmental loads.
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End-to-End EPC
Turn-key Dry Room System
Integrated cleanroom panels, air locks, ceiling suspended duct distribution, and desiccant units under a single warranty.
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Solvent Reuse ≥99%
NMP Recovery System
Closed-loop solvent scrubbers and condenser trains saving chemical purchasing costs for battery cathode lines.
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Thermal Oxidation
VOC Abatement System
Combines sub-zero pre-condensation stages with high-temperature regenerative oxidation for full clean-air compliance.
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Low Kw/Litre
Refrigerative Dehumidifier
Rugged industrial condensing equipment built for ceiling mounting or plant-room ducted installations.
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Modular Design
Ducted Cleanroom AHU
Interlocking double-skin insulated casing preventing thermal bridges and condensation in humid plant environments.
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Rotary Media
Desiccant Rotor Cassette
Silicate and molecular matrix wheels engineered for drop-in retrofit into existing AHU and ceiling duct runs.
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ATEX / Ex-Proof
Oil Vapor Recovery Unit
Certified flameproof fan assemblies and cold condenser modules for oil, chemical, and petrochemical tank venting.
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Direct Factory Consultation
Consult a Hangzhou DryAir Project Engineer
Send your duct schematics, airflow requirements (CMH/CFM), target dew points, and latent heat parameters. Our team delivers initial engineering assessments and RFQ proposals within 24 hours.