DP -70°C
Desiccant Dehumidifier
DHU rotary desiccant dehumidifiers deliver extreme low dew point air across battery assembly lines and moisture-critical environments.
- Min. -70°C dew point control
- Energy-saving heat wheel options
Primary Solutions
Precision Dehumidification & Recovery Equipment
Advanced systems engineered to conquer extreme latent loads, reclaim valuable solvents, and protect dry cleanroom envelopes.
DP -70°C
Turnkey EPC
Turn-key Dry Room System
Integrated envelope structure, HVAC filtration, low dew point air handlers, and proprietary automated DCS control architecture.
- End-to-end design & validation
- Validated for gigafactory operations
Recovery ≥99%
NMP Recovery System
High-efficiency solvent condensation and scrubbing plant capturing N-Methyl-2-pyrrolidone vapors from coating drying lines.
- ≥99% solvent recovery rate
- Ultra-low exhaust concentration
RTO & Chill
VOC Abatement System
Hybrid system coupling deep condensation cooling with Regenerative Thermal Oxidation (RTO) for extreme emission compliance.
- Zero-leakage switching valves
- Comprehensive thermal recovery
Pre-Cooling
Refrigerative Dehumidifier
Engineered compressor-driven moisture reduction units serving as industrial pre-cooling arrays and general warehouse storage.
- Optimized baseline humidity removal
- Heavy-duty scroll compressors
Modular AHU
Low Temp Modular Unit
Pre-engineered skid-mounted dehumidification module enabling rapid on-site hookup and quick ramp-up to target dew points.
- Dual desiccant wheel setup
- Low thermal-bridge casing
Airtight Cleanroom
Dry Room Enclosure
Thermal-break cleanroom wall and ceiling assemblies certified for low air permeability and sterile chemical non-reactivity.
- Negative/positive pressure locks
- Fireproof rockwool cores
Condensation Skid
Solvent Recovery Unit
Multi-stage refrigeration condensing arrays capable of knocking down high hydrocarbon and organic vapor exhaust concentrations.
- Corrosion-proof coil alloys
- Auto defrost integration
Manufacturing Depth
China Factory Advantages & Industrial Supply Chain Scale
Capitalizing on integrated industrial clusters, advanced sheet metal automation, and rigorous testing infrastructure to deliver unmatched CAPEX-to-performance efficiency.
200+
Units Produced / Month
30%+
National Market Share
-70°C
Guaranteed Dew Point
74+
HVAC & Material Engineers
Vertically Integrated Supply Ecosystem
Our Hangzhou base draws from world-class metalworking, specialized desiccant wheel synthesis, and precision fan motor ecosystems. This vertical alignment eliminates supply chain bottlenecks, shortens project lead times by 35%, and guarantees strict component traceability from raw steel to final assembly.
Full-Scale Environmental Testing Chambers
Every low temperature dehumidifier undergo pre-commissioning testing in our internal climatic test simulation cells. We recreate extreme ambient conditions—from humid tropical climates to sub-zero winters—verifying supply air dew points down to -70°C before any unit ships overseas.
Global Export Certifications & Standards
DryAir units are manufactured to comply with CE, UL, CSA, ASME, and EAC standards. With operations governed by ISO 9001 and national military GJB benchmarks, international industrial clients benefit from Chinese manufacturing economies of scale paired with stringent Western engineering compliance.
Technology Trends
Next-Generation Trends in Industrial Dehumidification
The transition toward high-nickel cathodes, solid-state batteries, and carbon-neutral production is transforming industrial air treatment paradigms.
Desiccant Rotor Adsorption Breakthroughs
Traditional silica gel gives way to specialized molecular sieve coatings and metal-organic frameworks (MOFs). These advanced media maximize water vapor uptake at near-zero relative humidity, enabling single-rotor or dual-rotor systems to sustain -70°C dew point targets with substantially lower regeneration airflow and heat consumption.
Waste-Heat Recovery & Low-Grade Thermal Regeneration
Modern low temperature dehumidifiers are moving away from brute-force electrical heating. Our innovative thermal cycles harness waste heat from air compressor jackets, cooling water circuits, and RTO flues to regenerate desiccant wheels at temperatures below 90°C, slashing industrial plant operating costs by up to 40%.
AI Predictive Control & Dynamic Mass Balancing
By embedding industrial IoT edge gateways, low temperature dehumidification equipment continuously correlates outdoor enthalpy, human shift loads, and real-time room pressure differentials. Automated machine learning algorithms dynamically modulate fan speeds and regeneration bypasses, preventing dew point drift before production yields suffer.
Field Engineering
Mission-Critical Applications & In-Field Demands
Across diverse sectors, moisture acts as an invisible contaminant. DryAir engineers tailor air psychrometrics to specific chemical tolerances.
Lithium-Ion & Solid-State Batteries
Lithium hexafluorophosphate (LiPF6) electrolyte reacts vigorously with airborne moisture, generating hydrofluoric acid (HF) that compromises battery life and triggers cell thermal runaway. Our dry room dehumidification arrays maintain supply air at -50°C to -70°C dew point throughout electrolyte injection, winding, and laser sealing bays.
Pharmaceutical GMP Cleanrooms
Hygroscopic active pharmaceutical ingredients (APIs), effervescent formulations, and soft gelatin capsules degrade rapidly in humid ambient air. DryAir delivers sterile, low dew point air systems maintaining 10%–20% relative humidity under tight temperature tolerances, adhering strictly to US FDA and EU GMP cleanroom validation criteria.
Military, Defense & Aerospace
Manufactured under GJB military compliance, our low temperature dehumidifiers preserve avionics, missile guidance assemblies, optical payloads, and propellants in high-humidity littoral environments. By locking ambient relative humidity below 35% RH, internal mechanical and electronic corrosion rates are reduced to zero.
Macro Solutions
Industrial Psychrometric Engineering Targets
A rigorous specification framework designed to help procurement engineers, EPC contractors, and facility directors align system designs with chemical realities.
| Application Sector | Moisture Contaminant Risk | Operational Dew Point / RH | Recommended Configuration |
|---|---|---|---|
| Lithium Battery Cell Assembly | HF Acid Formation, Delamination | -40°C to -60°C DP | Turn-key Dry Room System |
| Solid-State & Lithium Metal R&D | Extreme Anode Oxidation | Down to -70°C DP | Dual-Rotor Desiccant Dehumidifier |
| Electrode Drying & Solvent Exhaust | NMP Emissions, Environmental Non-Compliance | ≥99% Solvent Yield | Deep-Cooling NMP Recovery System |
| Powder Processing & Dry Granulation | Caking, Agglomeration, Biological Growth | 10% to 25% RH | Rotary Desiccant AHU |
| Defense, Ammunition & Avionics Storage | Galvanic Corrosion, Propellant Breakdown | ≤35% RH | GJB Industrial Dehumidifier |
| Bulk Warehousing & Pre-cooling Arrays | Condensation Mold, Packaging Saturation | 45% to 60% RH | Refrigerative Dehumidifier |
| Petrochemical Fuel Storage & Vents | VOC Outgassing, Explosive Vapor Density | Strict Stack Thresholds | VOC Abatement / Condensation + RTO |
Turnkey Delivery
How a DryAir Industrial Project Is Executed
From psychrometric load calculations to multi-point dew point validation, our standardized turnkey framework ensures predictable delivery and zero performance drift.
Step 01
Consulting
Latent moisture mapping, infiltration review, and precise operational dew point parameter formulation.
Step 02
Engineering
Psychrometric curve simulation, airflow distribution modeling, and waste-heat recovery integration design.
Step 03
Fabrication
Precision CNC sheet fabrication, rotor installation, and full factory climatic chamber run testing.
Step 04
Installation
Site erection, ductwork sealing, pressure boundary verification, and comprehensive sensor commissioning.
Step 05
Lifecycle Care
Remote telemetry, 2-year international warranty support, and rapid spare parts fulfillment.
Global Procurement
Meeting the Purchasing Needs of Global Enterprises
International gigafactories and pharmaceutical conglomerates evaluate equipment through total cost of ownership, risk mitigation, and verified performance track records.
Tier-1 Battery Reference Validations
DryAir has delivered advanced humidity control systems for leading battery developers, including CATL, BYD, EVE Energy, SVOLT, ATL, and international pioneers such as Tesla, Northvolt, and TTI. Our deep familiarity with plant acceptance audits, Cleanroom Class 1000 protocols, and gigafactory delivery benchmarks provides procurement teams with absolute risk elimination.
Guaranteed Life Cycle OPEX Reduction
Industrial low temperature dehumidifiers run continuously. A 10% delta in regeneration thermal efficiency yields hundreds of thousands of dollars in annual electrical savings. Our proprietary waste-heat reclamation heat exchangers, coupled with variable-speed desiccant wheel motors, ensure the lowest lifetime kWh/kg moisture removal costs on the market.
Seamless On-Site International Commissioning
We solve the critical pain point of cross-border industrial equipment integration. DryAir provides on-site field engineering teams for installation oversight, balancing, and regulatory validation, accompanied by an optional comprehensive 2-year international lifecycle service agreement and continuous remote IoT telemetry.
Technical Articles
Engineering Field Reports & Insights
Direct knowledge from real-world dry room installations to help plant engineers evaluate equipment architecture and specify low dew point systems.
Procurement Inquiries
Frequently Asked Questions on Low Temperature Dehumidification
Comprehensive engineering clarifications addressing air psychrometrics, export compliance, turnkey delivery, and site commissioning.
What is the lowest dew point a DryAir desiccant dehumidifier can achieve?
DryAir rotary desiccant dehumidifiers can reliably control supply air down to a minimum of -70°C dew point. This level of dry air delivery is vital for lithium battery cell assembly, electrolyte filling, and solid-state cell research, preventing moisture-induced chemical degradation.
Do you supply complete turnkey dry rooms for battery factories outside China?
Yes. DryAir provides turnkey dry room solutions encompassing initial psychrometric design, enclosure fabrication, specialized low dew point AHUs, airtight ducting, on-site commissioning, and regulatory validation. We have successfully completed projects for global clients including Tesla, Northvolt, and TTI.
Which certifications do DryAir systems hold for international markets?
Depending on destination parameters, DryAir equipment can be certified to CE (Europe), UL/CSA (North America), ASME (pressure vessels), and EAC (Eurasian Customs Union). Our manufacturing facilities operate under strict ISO 9001 and Chinese military GJB quality standards.
What recovery rate can a DryAir NMP recovery system reach?
Our multi-stage condensation and scrubbed NMP recovery systems consistently achieve solvent recovery efficiencies of ≥99% on cathode coating and drying ovens. This reduces plant operating expenditure on N-Methyl-2-pyrrolidone solvent procurement while satisfying stringent environmental emission norms.
What after-sales service and warranties are offered for overseas clients?
International buyers benefit from optional 2-year extended service agreements, on-site commissioning by experienced Hangzhou DryAir field engineers, rapid replacement parts fulfillment, and continuous cloud-connected IoT diagnostic monitoring to prevent unscheduled maintenance shutdowns.
How does DryAir's low temperature dehumidifier optimize regeneration energy?
Our systems utilize multi-stage waste-heat recovery coils, secondary heat wheels, and variable reactivation heaters. By recycling waste thermal energy from plant chillers or coater exhaust, we reduce total system electrical consumption by 25% to 40% compared to conventional desiccant systems.
Product Catalog
Explore Our Complete Dehumidifier Lineup
Shortlist systems engineered to meet your facility's exact sensible and latent cooling loads.
DHU Industrial
Desiccant Dehumidifier
Designed for battery, military storage, and chemical processing requiring continuous low dew point air streams.
View Specifications
Full EPC
Turn-key Dry Room System
Complete low dew point environmental rooms delivered under a single point of technical responsibility.
Explore Dry Rooms
ZJRH Series
NMP Recovery System
High-efficiency solvent condensation recovery that drastically reduces raw material spend and stack emissions.
Learn More
JEN Series
VOC Abatement System
Multi-stage regenerative thermal oxidizers (RTO) coupled with deep-freeze condensation for toxic emissions.
Learn More
Pre-Cooler
Refrigerative Dehumidifier
High-performance compressor refrigeration packages for moisture pre-treatment and storage warehouses.
Learn More
Skid Mount
Modular Dehumidifier AHU
Plug-and-play low temperature air handling systems engineered for rapid pilot line installation.
View Specifications
GMP Ready
GMP Dry Room Enclosure
Airtight, non-shedding cleanroom wall and ceiling construction with integrated high-efficiency air locks.
Explore Dry Rooms
Deep Freeze
Condensation Recovery Skid
Vapor recovery units for fuel transshipment terminals, petrochemical refineries, and chemical process plants.
Learn More
Start Engineering Consultation
Request Technical Data & Project Sizing
Download comprehensive equipment engineering manuals, psychrometric curves, and schedule a 1-on-1 technical review with our registered HVAC specialists.