DP -70°C Spec
Desiccant Dehumidifier
DHU Series rotary units engineered to supply consistent low-dew-point environmental control where refrigeration can no longer perform.
- Stable -70°C Dew Point Control
- Ultra-Low OPEX Thermal Regeneration
Tesla
Northvolt
CATL
ATL
BYD
EVE Energy
Farasis
Envision
SVOLT
TTI
Industrial Core Equipment
Engineered Low Dew Point & Dehumidification Systems
Browse our premier electric rotary desiccant systems, high-efficiency condensation dehumidifiers, and turn-key chemical recovery equipment engineered for global industrial deployments.
DP -70°C Spec
EPC Turnkey
Turn-key Dry Room System
Integrated envelope panels, air handling modules, deep desiccant drying, and real-time PLC monitoring under a unified validation protocol.
- Turnkey Lifecycle Ownership
- Gigafactory Scale Validated
Recovery ≥99%
NMP Recovery System
ZJRH Series captures volatile N-Methyl-2-pyrrolidone solvent vapors directly from lithium battery electrode coater exhaust streams.
- Minimum 99% Solvent Yield
- Reduces Emission & Re-buy Cost
Cooling + RTO
VOC Abatement System
Multi-stage cryogenic deep-cooling condensation alongside regenerative thermal oxidizers to scrub toxic industrial effluent.
- Cryogenic Condensation Traps
- Certified Global Stack Compliance
High Efficiency
Refrigerative Dehumidifier
Industrial refrigeration dehumidifier designed for warehouse storage, pre-treatment cycles, and raw material moisture barrier preservation.
- Optimized Vapor Compression
- Low Ambient Defrost Control
Custom Built
Custom Gigafactory Air Handler
High air volume climate handler combining primary precooling coils, double rotor drying wheels, and HEPA particulate interception.
- Duplex Desiccant Configuration
- Zero Air-Leakage Enclosures
Purity Optimized
Solvent Recovery Tower
Fractional distillation and chilled column system separating condensed NMP from exhaust airstreams for direct recirculation in slurry mixing.
- Online Purity Monitoring
- Thermal Energy Recovery System
EPA Compliant
VOC Deep Condensation Skid
Engineered explosion-proof hydrocarbon abatement skid utilizing multistage compression coolers to prevent plant emissions.
- ATEX / UL Ex Rated Systems
- Continuous 24/7 Run Reliability
Industrial Matrix & Capacity
China Factory 4.0: Supply Chain Resilience & Manufacturing Depth
As an authoritative Chinese electric industrial dehumidifier manufacturer and global exporter, Hangzhou DryAir pairs advanced smart assembly with vertically integrated HVAC supply chains to mitigate global lead-time friction.
Massive Throughput & Scalability
Monthly manufacturing capacity surpasses 200+ heavy industrial dehumidifier units. Our automated CNC fabrication, laser robotic cutting, and in-house coil production buffer buyers against component supply shocks.
200+ Units/Mo
Tier-1 Component Ecosystem
We source critical modules from world-class Tier-1 partners: FläktGroup/Proflute desiccant wheels, Ziehl-Abegg EC fans, Siemens PLC controllers, and Danfoss compressors, ensuring global parts cross-compatibility.
100% Traceable
Factory Enthalpy Test Labs
Units are pre-commissioned inside our environmental simulation test chambers, verifying dew point stabilization (-70°C), casing leakage class (EN 1886 L1), and fan static efficiency prior to ocean container freight.
Zero-Defect FAT
Strategic Procurement
Addressing Global Enterprise Procurement Demands
Procuring industrial dehumidification machinery from China involves scrutinizing risk factors beyond standard unit price. We align directly with international capital expenditure expectations.
Total Cost of Ownership (TCO)
Desiccant regeneration consumes significant thermal power. Our recovery coils and heat pump hybrid loops cut baseline regeneration energy consumption by 25% to 40%, yielding rapid amortized ROI across 10-year asset cycles.
Schedule Adherence & Fast Lead Times
With standardized component staging and modular air handling frames, Hangzhou DryAir shortens production turnaround from the typical European 26–36 weeks down to 10–14 weeks, keeping gigafactory project schedules secure.
Full Engineering Submittal Transparency
Global procurement teams receive full BIM/Revit models, CAD general arrangement schematics, psychrometric load curves, electrical P&ID blueprints, and FAT checklists to accelerate engineering sign-off.
Mission-Critical Operations
Engineered Sector Solutions: Where Micro-Moisture Means Risk
Specific industries demand bespoke psychrometric targets. Our tailored industrial dehumidification architectures solve critical moisture challenges across mission-critical environments.
EV & Lithium-Ion Batteries
Trace moisture reacts violently with LiPF6 electrolyte salts, forming highly corrosive hydrofluoric acid (HF). We supply continuous supply air at -50°C to -70°C dew point across cell winding, stacking, electrolyte injection, and seal welding phases.
Pharmaceutical & Healthcare
Hygroscopic API powders, effervescent tablets, and gelatin encapsulation lines experience clumping, biological growth, and unstable degradation under fluctuating RH. We maintain GMP-compliant conditions (1% to 20% RH) with sanitary washdown construction.
Defense & Aerospace Equipment
Built under the GJB national military standard framework, our systems protect avionics, tactical missile depots, radar enclosures, and composite tooling autoclaves against micro-corrosion, rust pitting, and polymer delamination.
Petrochemical & Fuel Storage
Hydrocarbon gas release during marine tanker bunkering and pipeline loading demands cryogenic deep-cooling combined with RTO abatement to condense volatile fumes and recover valuable fractions before atmospheric venting.
Semiconductors & Electronics
Photolithography masks, wafer storage, and display assembly require hyper-stable atmospheric controls. Our electric desiccant configurations deliver constant ±1% RH stabilization, eliminating electrostatic ESD and wafer oxidation issues.
Cold Storage & Food Processing
Eliminate ice buildup on evaporator coils, slippery floors in freezer loading bays, and moisture absorption in spray drying and confectionery staging zones with dedicated deep desiccant drying.
Engineering Specifications
Technical Psychrometric Selection Matrix
Design teams should calibrate moisture removal capacity around target dew point constraints rather than general nominal CFM. Use our engineering baseline matrix for system planning.
| Industrial Application | Controlled Dew Point / Humidity Target | Recommended Machine Architecture | Target Air Volume Range |
|---|---|---|---|
| Lithium Battery Cell Assembly & Electrolyte Fill | -40°C to -60°C DP (Supply air down to -70°C) | Dual-Rotor Desiccant Dehumidifier with Chilled Water Pre-Cooling | 3,000 to 120,000 m³/h |
| Solid-State & Lithium Metal Battery R&D | -60°C to -70°C DP Continuous | Ultra-Low DP Duplex Rotor + Low-Leakage Casing (Class L1) | 1,000 to 40,000 m³/h |
| Electrode Slurry Coating & Exhaust Lines | ≥99% Solvent Recovery Yield | ZJRH Condensation Absorption & Recirculation Tower | 5,000 to 180,000 m³/h |
| Pharmaceutical Powder Processing & Packaging | 10% to 25% RH (-15°C to -25°C DP) | Single/Dual Desiccant Rotor with Steam/Electric Regeneration | 2,000 to 50,000 m³/h |
| Aerospace Composites & Military Storage | ≤35% RH (Ambient Temp Preservation) | DHU Series Packaged Desiccant Dehumidifiers | 1,000 to 25,000 m³/h |
| Petrochemical Fuel Storage & Volatile Transfer | EPA & EU VOC Exhaust Limits | JEN Multi-Stage Deep-Cooling Condenser + RTO Skid | 800 to 30,000 m³/h |
| Raw Material Warehouses & Pre-Treatment | 45% to 55% RH | Industrial Refrigerative Condensing Dehumidifier | 1,500 to 35,000 m³/h |
Export Compliance & Field Assurance
Localized Support, Safety Certifications & Global Compliance
Exporting complex industrial equipment demands adherence to localized legal codes, pressure vessel directives, and rapid engineering response networks.
Global Certification Framework
Depending on import destination requirements, equipment is designed and tested to CE Machinery & Low Voltage Directives, UL 1995/UL 60335 electrical codes, CSA Canadian norms, ASME Section VIII pressure vessel stamps, and EAC customs standards.
Dedicated International Commissioning
Our senior commissioning engineers mobilize internationally across North America, Europe, Southeast Asia, and the Middle East to supervise rigging, electrical tie-ins, rotor balancing, sensor calibrations, and joint validation protocols.
IoT Cloud Telemetry & Remote Audits
Secure cellular IoT routers allow Hangzhou DryAir factory engineers to conduct live psychrometric telemetry analysis, fine-tune regeneration VFD logic, and troubleshoot sensor discrepancies side-by-side with your local plant engineers.
Milestone Assurance
Our Turnkey Delivery Architecture (EPC)
A rigorous five-stage execution matrix ensuring risk-free commissioning from tender engineering to validated continuous run.
Step 01
Psychrometric Consulting
Load assessment calculating process infiltration, fresh air loads, structural envelope leakage, and latent human heat factors.
Step 02
Engineering & BIM
Comprehensive CFD airflow modeling, duct layout optimization, PLC program development, and 3D collision detection.
Step 03
Factory 4.0 Fabrication
Precision robotic sheet fabrication, rotor installation, wiring integration, and pre-shipment FAT tests within thermal test cells.
Step 04
Field Commissioning
On-site assembly oversight, envelope vacuum integrity tests, dew point pull-down validation, and balance adjustments.
Step 05
Service & Warranty
Optional 2-year overseas warranty program, scheduled preventative maintenance inspections, and fast regional spare part delivery.
Next-Gen Engineering
Technology Roadmap: The Future of Industrial Humidity Control
Anticipating next-generation battery chemistries and net-zero industrial mandates through active research and development.
Solid-State Cell (-80°C DP) Research
All-solid-state lithium batteries using sulfide-based solid electrolytes generate lethal hydrogen sulfide (H2S) gas upon contact with even trace humidity. We are pioneering triple-stage desiccant architectures targeted at sustained -80°C dew point delivery.
Waste Heat Driven Regeneration
By capturing industrial waste heat from coater stacks, compressor cooling jackets, and centralized steam manifolds, our hybrid desiccant units reduce direct electrical regeneration requirements by up to 60%, drastically cutting your facility's Scope 2 carbon footprint.
AI Dynamic Load Tuning Algorithms
Integrated neural-network logic evaluates external ambient weather forecasts, shifting plant shift occupancy, and actual coater running status to dynamically modulate reactivation burner staging and fan speeds in real time, avoiding unnecessary energy burn.
Procurement Intelligence
Frequently Asked Questions: Global Sourcing & Engineering
Comprehensive answers covering critical technical tolerances, overseas installations, warranty models, and factory certifications.
What is the lowest dew point a DryAir rotary desiccant dehumidifier can guarantee?
Hangzhou DryAir rotary desiccant dehumidifiers regularly maintain stable supply air down to a minimum of -70°C dew point (DP) under continuous industrial run conditions. This makes them ideal for lithium battery cell assembly, automated pouch sealing, electrolyte injection modules, and solid-state battery manufacturing cleanrooms where ambient moisture must remain below 0.5% relative humidity.
Do you deliver complete turnkey EPC dry rooms outside of China?
Yes. We execute end-to-end turnkey dry room solutions internationally. Our scope covers initial load modeling, structural airtight cleanroom envelope construction, deep-drying AHU design, on-site mechanical installation, automation wiring, commissioning, and final ISO/GMP environmental validation. We have successfully supplied equipment and engineering services for international customers including Tesla, Northvolt, and TTI.
Which international certifications do DryAir dehumidifiers and systems hold?
Depending on destination market requirements, DryAir machinery complies with CE (Machinery, EMC, and LVD directives), UL / cUL standards (UL 1995/60335), CSA (Canada), ASME Section VIII (pressure vessels), and EAC (Eurasian Customs Union). Internally, the factory operates under ISO 9001 quality management, ISO 14001 environmental, and the GJB national military standard system.
What solvent recovery efficiency does the DryAir NMP recovery system achieve?
DryAir ZJRH series NMP recovery systems consistently achieve a solvent recovery rate of ≥99% from electrode coater drying exhaust. The reclaimed liquid NMP is condensed, collected, and distilled for re-use, slashing solvent procurement expenditure and ensuring full compliance with stringent environmental VOC stack emissions.
What warranty, after-sales, and spare parts support is available for international buyers?
We provide full factory warranties with an optional 2-year international extended service agreement. Overseas clients receive rapid 24/7 remote technical assistance via IoT telemetry, dispatch of DryAir commissioning engineers for field service, and regional stock allocations of critical spare components (desiccant drive belts, seals, actuators, and replacement sensor probes).
How does DryAir ensure airtightness and avoid thermal bridging in low dew point air handlers?
Our air handling units utilize double-skin casing with high-density injected polyurethane insulation, composite thermal break frames, and continuous pneumatic EPDM perimeter seals. Certified to EN 1886 casing leakage Class L1 and thermal transmittance Class T2/TB2, the design completely stops ambient vapor infiltration and exterior casing sweat under extreme sub-zero dew point operation.
Product Catalog & Resources
Complete Cleanroom & Climate Solutions Portfolio
Explore our complete export line of low dew point air handlers, emission control scrubbers, and industrial drying systems configured for global plants.
Rotary DHU
Industrial Desiccant Skid
Engineered with dual process fans and electric or steam regeneration heaters for heavy industrial moisture extraction.
Product Profile
Dry Room
Cleanroom Dry Enclosures
Airtight insulated wall and ceiling panel systems with integrated airlocks, pass-throughs, and low dew point supply ducting.
Cleanroom Specs
NMP Unit
Electrode Coater Recovery
Continuous recovery equipment for battery gigafactories that recycles N-Methyl-2-pyrrolidone at industrial capacities.
View System
VOC System
RTO Abatement Skid
High destruction-efficiency regenerative thermal oxidizer and deep condensation package for industrial plant stacks.
View System
Refrigerative
Standard Industrial Dehumidifier
Heavy-duty compressor refrigeration dehumidifier for humidity control in pharmaceutical, storage, and logistics facilities.
Product Profile
OEM Custom
Modular Dry Air Station
Skid-mounted compact dry air supply systems engineered for glove boxes, laboratories, and pilot lithium-ion lines.
View Lineup
Pharma Grade
GMP Pharmaceutical Dehumidifier
Stainless-steel internal panels, washdown filtration racks, and precise microbial-safe relative humidity controls.
Service Details
Direct Factory
Factory Engineered Systems
Direct factory custom engineering, including bespoke duct transitions, specialized voltage adaptors, and multi-wheel systems.
Contact Engineering
Technical Publications
Engineering White Papers & Field Case Studies
In-depth technical papers authored by Hangzhou DryAir engineers to help plant managers and HVAC consultants optimize moisture removal.
VOC Treatment
How Does an Oil Gas Condensation Recovery System Work?
A comprehensive analysis of multi-stage refrigeration recovery circuits applied during high-volume fuel transferring, vapor condensation cycles, and emissions mitigation.
Read Technical Paper
NMP Recovery
Maintaining Stable NMP Recovery Efficiency in 24/7 Production
Field data from 100 GWh gigafactory operations demonstrating how chilled condensation loops, gas-to-gas heat exchangers, and continuous distillation avoid operational downtime.
Read Technical Paper
Pharmaceutical
Mitigating Latent Moisture Hazards in Pharmaceutical Processing
Critical review of hygroscopic binding problems, tablet breakage, soft-gel deformation, and caking phenomena prevented via targeted rotary desiccant dehumidification.
Read Technical PaperDirect Factory Procurement
Engage Hangzhou DryAir Engineering Teams
Send your project blueprints, process CFM requirements, target room dew points, and facility floor plans. Our senior HVAC and cleanroom design engineers will return a complete psychrometric calculation and quotation within 24 business hours.