DP -70°C
Industrial Desiccant Dehumidifier
DHU series heavy-duty rotary silica-gel desiccant dehumidifiers built to hold extreme moisture-free supply air 24/7 with heat recovery.
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Precision Thermal Portfolio
High-Performance Air Cooling & Dehumidification Lineup
Explore our engineered air cooler and dehumidifier solutions tailored for gigafactory clean rooms, pharmaceutical labs, precision food drying, and harsh industrial environments.
DP -70°C
Turnkey EPC
Turn-key Dry Room System
Complete envelope, modular insulated paneling, precision air cooler integration, deep-dehumidification AHU, and automated PLC control systems.
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Recovery ≥99%
NMP Solvent Recovery System
High-efficiency closed-circuit N-Methyl-2-pyrrolidone condensation, purification, and multi-stage air cooler system for coating lines.
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Cooling + RTO
Industrial VOC Abatement System
Engineered deep-cooling condensation combined with regenerative thermal oxidizers (RTO) to abate hazardous plant emissions reliably.
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High COP
Refrigerative Dehumidifier
Cost-effective moisture extraction utilizing premium compressor technology, dual air coolers, and smart reheat loops for warehouses.
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Gigafactory Spec
Low-Dew-Point Combined AHU
Custom-engineered modular air-handling unit integrating pre-cooling coils, double rotor stages, and HEPA air filtration modules.
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Closed Loop
Coating Exhaust Air Cooler System
Specialized gas-to-liquid air cooling heat exchangers ensuring optimal dew-point depression for solvent recovery and low heat discharge.
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GMP Compliant
Pharma Clean Room Air System
Sanitary construction, stainless steel casing, antimicrobial air cooler surfaces, and stable relative humidity management below 20% RH.
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Industry Macro Trends
The Evolution of Industrial Air Coolers & Dehumidification Systems
Modern industrial operations face unprecedented challenges: rapid electrification, strict ESG regulations, micro-defect tolerances in nano-electronics, and intensifying energy volatility.
From Comfort HVAC to Critical Microclimates
Traditional HVAC focused simply on thermal convenience. Today’s industrial landscape treats the air cooler and dehumidifier as an active manufacturing catalyst. In lithium cell manufacturing, a dew point fluctuation of mere degrees causes toxic hydrofluoric acid (HF) formation, degrading yield rates by up to 22%.
The Decarbonization & COP Mandate
Global procurement teams prioritize thermodynamic efficiency (COP/EER) over initial capital expenditure. Modern facilities utilize dual-stage desiccant regeneration powered by heat pumps or industrial waste heat, drastically reducing lifecycle OPEX and scope 1 & 2 carbon footprints across 24/7 operating cycles.
AIoT Predictive Psychrometrics
Smart air handlers and dehumidification skids now integrate distributed digital sensors. By monitoring real-time vapor pressure, differential coil temperature, and fan harmonics, industrial IoT platforms adjust chilled water velocity and desiccant wheel speeds proactively to neutralize external weather shocks.
Procurement Transformation: Total Cost of Ownership (TCO)
Tier-1 manufacturers in North America and Europe no longer source air handling units in silos. The shift toward integrated EPC turnkey contracts—where enclosure envelope sealing, deep air cooling, chemical dehumidification, and automated solvent recovery are provided under single-source liability—eliminates contractor finger-pointing and slashes commissioning lead times.
Factory 4.0 Engineering
China Industry 4.0: Manufacturing Resilience & Precision Scale
Hangzhou DryAir Treatment Co., Ltd. leverages China’s unparalleled precision manufacturing cluster to deliver high-capacity dehumidifiers and air cooling solutions with unmatched reliability, shortened delivery cadences, and rigorous international quality certifications.
End-to-End Vertical Supply Chain
By controlling sheet metal laser fabrication, automated rotor balancing, in-house copper fin coil expanding, and electrical panel assembly, we eliminate cross-tier component delays and maintain complete architectural control over every air handling unit.
Advanced 4.0 Automation
Robotic structural welding, computerized CNC bending, and automatic foaming processes ensure airtight double-skin casing with thermal break ratings compliant with EN 1886 standard (TB1/T1/L1), preventing condensation bridging even under humid tropical environments.
Multi-Market Compliance
All engineered units can be configured to comply with CE (Machinery & PED Directives), UL 1995/CSA C22.2 electrical standards for North America, ASME pressure vessel standards, and Eurasian EAC certifications, backed by strict ISO 9001 and GJB national military systems.
Calibrated Full-Load Test Bays
Every industrial dehumidifier and refrigeration air cooler undergoes real-time dew point, airflow, noise, and power consumption performance validation within our internal environmental test chamber prior to export crating, ensuring plug-and-play commissioning abroad.
Real-World Applications
Tailored Industrial Microclimates for Demanding Sectors
No two facilities share the same psychrometric heat and moisture profile. DryAir configures proprietary air cooler coils, desiccant wheel matrices, and filtration cascades to solve exacting industry needs.
Lithium-Ion & Solid-State Gigafactories
Electrode winding, pouch cell assembly, and electrolyte injection processes require extreme environmental parameters ranging from -40°C to -70°C dew point. Our combined air cooler and two-rotor desiccant configurations continuously remove latent moisture from incoming fresh makeup air and personnel loads while recycling sensible cooling energy.
Pharmaceuticals & Biologics GMP
Hygroscopic compounds, gelatin capsule manufacture, and effervescent tablet press rooms demand constant 15% to 30% RH without air contamination. DryAir systems utilize smooth internal surfaces, easy-drain coil pans, anti-corrosive stainless steel casings, and certified HEPA downstream barriers to guarantee full cGMP compliance.
Aerospace, Defense & Avionics Preservation
Adhering to GJB national defense standards, our specialized dehumidification skids eliminate galvanic corrosion, optical fogging, and explosive propellant decay within storage vaults, aircraft hangars, naval vessels, and missile electronics storage facilities under extreme ambient marine environments.
Petrochemical & Bulk Solvent Depots
During hydrocarbon transfer, tank breathing, and pipeline degassing, VOCs and fugitive vapors escape into the atmosphere. Our deep-cooling air condensation units chill vapor streams past condensation limits, capturing oil gases and toxic solvents before final polishing through catalytic or regenerative oxidizers.
Semiconductor Cleanrooms & Photolithography
Semiconductor wafer fabs require exact humidity bounds (typically 45% ± 1% RH) to eliminate electrostatic discharge (ESD) risks while preventing mask photoresist swelling. Our multi-zone chilled water air coolers and modulating trim reheat coils ensure ultra-tight psychrometric stability.
Industrial Food & Confectionery Processing
Powder spray drying towers, candy coating pans, and chocolate cooling tunnels suffer from clumping and mold if ambient moisture penetrates. DryAir custom refrigerative air coolers and desiccant units provide crisp, sanitary air to maintain product texture and prevent costly downtime.
Engineering Matrix
Engineering Selection Guide: Dew Point & Psychrometric Targets
Correctly scoping an air cooling and dehumidification package prevents catastrophic process drift and protects operating capital. Reference our technical performance spectrum below.
| Application & Process Environment | Critical Humidity / Dew Point Spec | Recommended Technology Configuration | Key Operational Advantage |
|---|---|---|---|
| Lithium Cell Assembly & Electrolyte Filling | -40°C to -60°C Dew Point | Turn-key Low Dew Point Dry Room System (Double Desiccant Wheel + Deep Air Cooling) | Eliminates toxic HF gas formation, protects battery electrolyte integrity and improves battery cycle life. |
| Next-Gen Solid State & Lithium-Metal Cells | Down to -70°C Dew Point | Ultra-Low DP Desiccant Dehumidifier with Glycol Deep Chillers & Molecular Sieve Zones | Guarantees zero micro-moisture contamination for ultra-reactive pure metallic lithium anodes. |
| Cathode/Anode Slurry Coating & Drying | ≥99% Solvent Capture | Closed-Circuit NMP Recovery System with Multistage Heat Exchanger Air Coolers | Cuts raw material N-Methyl-2-pyrrolidone costs by millions annually while keeping exhaust stack compliant. |
| Active Hygroscopic API & Tablet Packaging | 10% – 30% RH (Dew Point < -5°C) | Sanitary Desiccant Air Handling System with Chilled Water Pre-Cooling Coils | Prevents powder agglomeration, prevents blister pack delamination, conforms to strict FDA cGMP rules. |
| Munitions, Missiles & Radar Maintenance Vaults | ≤35% – 40% RH | GJB-Compliant Corrosion Protection Desiccant Dehumidifiers with Electric Reactivation | Halts oxidation of electronic contacts and propellant deterioration during long-term storage. |
| Raw Material Warehousing & Grain Storage | 45% – 60% RH | High-Efficiency Commercial Refrigerative Dehumidifier with Heat Pipe Economizers | Low-OPEX latent heat removal preventing mold growth and packaging carton collapse. |
| Petrochemical Tank Breathing & Loading Arms | Strict Emission Thresholds | VOC Deep-Cooling Condensation Abatement Units + RTO Thermal Oxidation Units | Direct physical recovery of valuable condensable light oils followed by total destruction of residual VOCs. |
Structured Execution
5-Stage Turnkey Delivery Framework
From architectural calculation to final room balancing, our end-to-end engineering discipline eliminates project schedule slippage and ensures seamless certification compliance.
STAGE 01
Consulting & Audit
Thorough psychrometric modeling, air leakage rate simulation, human moisture load calculation, and ambient climate mapping.
STAGE 02
System Engineering
CFD air distribution modeling, coil face velocity calculation, chilled water balancing, and energy recovery optimization.
STAGE 03
Precision Build
In-house CNC fabrication, anti-corrosive coil dipping, double-skin casing assembly, and pre-shipment performance run tests.
STAGE 04
Installation & EPC
On-site mechanical erection, clean duct sealing, refrigeration piping, electrical hookup, and dew point curve validation.
STAGE 05
Lifecycle Care
Remote telemetry diagnostics, scheduled maintenance, rotor desiccant reactivation checks, and global spare parts supply.
Direct Answers
Frequently Asked Questions by Industrial Procurement Teams
Gain transparency on technical constraints, international compliance, energy considerations, and after-sales service protocols.
What is the lowest dew point a DryAir desiccant dehumidifier can achieve?
DryAir rotary desiccant dehumidifiers can reliably maintain supply air down to a verified minimum of -70°C dew point. This extreme microclimate is crucial for high-nickel lithium-ion battery cell assembly, electrolyte filling, and next-generation lithium-metal anode handling where trace moisture destroys yields.
How does an industrial air cooler work in tandem with a desiccant rotor?
Desiccant rotors absorb moisture chemophysically, which releases latent heat of adsorption and raises supply air temperature. An integrated chilled-water or direct expansion (DX) air cooler pre-cools incoming warm ambient air to condense bulk moisture first, and a post-cooling coil removes heat downstream, delivering high-volume air at precise dry-bulb temperatures.
Do you deliver complete turnkey dry room projects outside China?
Yes. DryAir operates a seasoned global engineering division that executes turnkey contracts worldwide. We handle initial consulting, engineering design, fabrication, maritime logistics, mechanical and electrical erection, system commissioning, and room tightness validation. We have successfully executed overseas projects for brands like Tesla, Northvolt, and TTI.
Which certifications do DryAir systems hold for European and North American markets?
Depending on unit model and country specifications, our equipment is fully certified under CE (Machinery, Low Voltage, and EMC Directives), UL 1995 and CSA C22.2 for North American electrical codes, ASME standards for pressurized heat exchangers, and EAC for Eurasian destinations, manufactured within ISO 9001 and GJB-certified quality infrastructures.
What recovery efficiency is achieved by DryAir NMP solvent recovery systems?
Our closed-loop and exhaust gas NMP recovery units routinely attain a certified recovery rate above 99%. By combining multi-stage condensation cooling, heat recovery heat exchangers, and secondary absorption rotors, battery coating operations recover ultra-pure liquid NMP while minimizing solvent purchasing costs and hazardous VOC emissions.
What post-warranty and international service support do you offer?
International clients can secure extended service agreements (such as our optional 2-year full-care package), 24/7 remote IoT telemetry monitoring, local parts dispatch, and rapid deployment of our bilingual field engineers for scheduled maintenance, desiccant rotor cleaning, or sensor recalibration.
Industrial Catalog
Engineered Air Cooler & Dehumidifier Core Equipment
Shortlist industry-proven configurations engineered for ultra-low dew points, aggressive solvent recovery, and thermal stability in continuous 8,760-hour annual duty cycles.
DP -70°C
Desiccant Dehumidifier Unit
DHU rotary desiccant systems for deep drying in military, pharmaceutical, and battery applications with zero refrigerant leakage risks.
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Turnkey Solution
Turn-key Dry Room System
Full envelope design, insulated wall panels, high-efficiency air lock systems, double-rotor AHUs, and automated HVAC integration.
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Recovery ≥99%
NMP Solvent Recovery System
ZJRH series high-efficiency solvent recapture units tailored for lithium electrode drying ovens, cutting environmental footprints.
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Cooling + RTO
VOC Abatement System
JEN series engineered thermal oxidation paired with deep refrigeration air coolers for reliable treatment of industrial emissions.
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Energy Efficient
Refrigerative Dehumidifier
High COP direct-expansion moisture condensing systems with air coolers for warehouse dehumidification, pre-cooling, and drying rooms.
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Ultra Dry
Battery Cell Dry Room AHU
Heavy duty air handling system engineered to withstand 24/7 non-stop manufacturing with redundant air coolers and fan arrays.
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OEM & Custom
Custom Industrial Air Cooler AHU
Bespoke coil geometries, multi-refrigerant compatibility, stainless casing, and explosion-proof motors tailored to engineering specs.
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Deep Cooling
Deep-Cooling Vapor Condenser
Sub-zero air cooler condensation arrays designed to freeze out volatile oil vapors and organic gases from chemical venting manifolds.
Learn MoreReady to Optimize Your Plant Microclimate?
Collaborate with Hangzhou DryAir’s registered HVAC engineers to calculate psychrometric air cooler coil capacities, desiccant rotor models, and TCO projections tailored to your project requirements.