DP -70°C
Desiccant Dehumidifier
DHU rotary units deliver stable deep-drying where standard refrigeration fails. Ideal for battery gigafactories, cleanrooms, and defence.
View SpecificationsPrimary Solutions Lineup
Engineering Grade Commercial & Industrial Dehumidification Products
Engineered for continuous moisture load extraction, precise humidity containment, and compliance with the most stringent international manufacturing standards (CE, UL, CSA, ASME, EAC).
DP -70°C
Turnkey EPC
Turn-key Dry Room System
Fully integrated envelope, HVAC, continuous dew point control, and energy recovery under single-point engineering responsibility.
Explore Dry Rooms
Recovery ≥99%
NMP Recovery System
Captures and recycles N-Methyl-2-pyrrolidone solvent from electrode coating exhaust, cutting operational cost and stack emissions.
System Details
RTO + Cooling
VOC Abatement System
Dual-stage condensation combined with regenerative thermal oxidation (RTO) for aggressive industrial solvent containment.
Abatement Solutions
High Efficiency
Refrigerative Dehumidifier
High-volume commercial condensation systems for warehouses, electronic assembly, and pre-cooling cycles upstream of desiccant wheels.
Commercial Models
Ultra-Low DP
Lithium Dry Room Air Handler
Specialized dual-rotor desiccant air handlers built to maintain dew points of -40°C to -60°C across extreme thermal variations.
Dry Room AHU
Vapor Recovery
Oil & Gas Condensation Unit
Specialized cryogenic and deep-chilling units engineered for fuel terminal emissions, hydrocarbon storage, and chemical handling.
Vapor Recovery
GMP Compliant
Pharma Cleanroom Dehumidifier
Sanitary-grade desiccant units built with stainless steel housings, antibacterial seals, and automated thermal regeneration.
Pharma SolutionsStrategic Industry Trends
The Evolution of China's Commercial & Industrial Dehumidifier Sector
From component assemblers to global technology leaders, China's commercial dehumidification sector has undergone a massive paradigm shift driven by gigawatt-scale manufacturing, strict decarbonization, and supply-chain sovereignty.
Energy Recovery & Low-OPEX Engineering
Thermal regeneration of desiccant wheels accounts for up to 60-70% of lifecycle cost. Leading Chinese suppliers are now integrating heat pumps, waste-heat capture from coater exhausts, and variable-speed drives to reduce primary energy demand by up to 35%.
Extreme Psychrometric Boundaries (-70°C DP)
The rapid scale-up of solid-state lithium chemistry, lithium-metal batteries, and semiconductor lithography has pushed air requirement specs from -40°C to an ultra-dry -70°C dew point, driving proprietary rotor synthesis and advanced multi-stage wheel configurations.
Complete EPC Turnkey Integration
Global procurement teams are moving away from modular component purchasing. The modern enterprise prioritizes full EPC capability—single-source envelope construction, ducting, smart telemetry, and performance warranties delivered under a single SLA.
Factory Audit Metrics
Engineering Depth You Can Audit at Hangzhou DryAir
With an established presence since 2010, Hangzhou DryAir operates with verified operational data, in-house performance testing facilities, and a Tier-1 global client track record.
-70°C
Controllable Supply Dew Point
≥99%
NMP Solvent Recovery Efficiency
30%+
China Industrial Dehumidification Share
200+
Custom Units Built Per Month
74
Engineers, PhDs & HVAC Specialists
Elite Engineering Cadre
Our technical core includes 6 master's and doctoral scholars, 2 national registered HVAC engineers, 8 senior industry engineers, and 58 certified field technicians operating under strict GJB national military and ISO 9001 standards.
Tier-1 Global Track Record
Validated by world-class manufacturers including Tesla, Northvolt, CATL, ATL, BYD, EVE Energy, Farasis, Envision, SVOLT, and TTI. We engineer out common failure modes before shipment.
Rigorous Factory Acceptance Tests (FAT)
Every commercial system undergoes rigorous multi-point air velocity, casing air-leakage (Class L1/L2), and low-dew-point thermal simulation inside our specialized in-house environmental test chambers.
Engineering Application Matrix
Macro Industry Solutions & Psychrometric Selection Guide
Correctly sizing humidity control systems balances process yield against long-term lifecycle electricity and steam consumption. Use this empirical baseline for RFQ specifications.
| Application Sector | Moisture Risk & Mechanism | Target Air Parameter | Recommended System |
|---|---|---|---|
| Lithium-Ion Battery Assembly | Moisture decomposes LiPF6 electrolyte into corrosive HF acid, ruining cycle life. | -40°C to -60°C DP | Turn-key Dry Room System / Desiccant Dehumidifier |
| Solid-State & Lithium Metal | Extreme pyrophoric reaction risk with atmospheric moisture. | Down to -70°C DP | Custom DHU Series Ultra-Dry Desiccant Air Handler |
| Electrode Slurry Coating | NMP solvent vapor loss, high stack emission penalties. | ≥99% Solvent Recovery | NMP Recovery System (Condensation + Rotor Adsorption) |
| Pharmaceutical Cleanrooms | Hydrolysis, powder caking in tableting, gelatin capsule softening. | 10% – 30% RH (DP < 4°C) | Pharma-Grade Desiccant Dehumidifier Unit |
| Military, Ammo & Aerospace Storage | Galvanic corrosion, propellant degradation, electronics mildew. | ≤40% RH (Stable) | GJB Military Standard Desiccant System |
| Commercial Warehousing & Pre-cooling | Mold development, packaging structural compromise. | 45% – 60% RH | Refrigerative Commercial Dehumidifier |
| Petrochemical & Vapor Terminals | Fugitive hydrocarbon volatile organic carbon (VOC) emissions. | Strict EPA / EN Compliant | Deep-Cooling VOC Abatement + RTO Systems |
Operational Assurance
Localized Support, Global Compliance & Turnkey EPC Workflow
Purchasing capital equipment from China requires absolute certainty in structural compliance, electrical safety standards, and round-the-clock service availability.
Global Certification & Codes
All Hangzhou DryAir industrial and commercial units can be custom-engineered to meet CE directives (Machinery & Low Voltage), UL 1995/CSA standards for North America, ASME code for pressure vessels, and EAC mark for Eurasian markets. Comprehensive documentation packs include P&ID, electrical schematics in EPLAN, and complete material certificates.
Localized Field Service & 2-Year Overseas SLA
We provide full English-fluent project management teams for international commissioning, coupled with an optional 2-year full-coverage warranty service agreement. Systems include IoT-enabled remote diagnostics, allowing our headquarters engineering staff to monitor psychrometric curves and support local maintenance crews 24/7.
PHASE 01
Engineering Audit
Analysis of sensible/latent moisture loads, air exchange rates, and process delta enthalpy.
PHASE 02
BIM & Psychrometrics
Detailed ducting design, CFD airflow modeling, and regeneration energy calculation.
PHASE 03
Precision Fabrication
In-house casing assembly, wiring to UL/CE guidelines, and full FAT performance testing.
PHASE 04
On-Site Installation
Bilingual commissioning engineers deployed for panel erection, balancing, and leak testing.
PHASE 05
Validation & Life-Cycle
Continuous dew point validation, spare parts consignment stock, and SLA servicing.
Technology Roadmap
The Future of Commercial Dehumidification: 2025–2030 Roadmap
Hangzhou DryAir is actively investing in next-generation dehumidification sciences, reducing the carbon footprint of critical dry-room processes worldwide.
Solid Desiccant Nanomaterials
Transitioning from traditional silica gel and synthetic molecular sieves to metal-organic frameworks (MOFs). MOF-coated rotors enable regeneration at temperatures below 75°C, unlocking low-grade industrial waste water utilization.
AI-Driven Psychrometric Tuning
Integration of predictive machine learning algorithms into the PLC architecture. Real-time dynamic compensation adjusts wheel rotation speed, heating valve trim, and fan VFDs based on external weather forecasts and occupancy loads.
Closed-Loop Circular Solvents
Refining combined VOC abatement and condensation technology to achieve closed-loop solvent purity upwards of 99.8%, allowing direct reintroduction into battery slurry mixing tanks without third-party distillation processing.
Procurement Knowledge Base
Frequently Asked Questions for Global Dehumidifier Buyers
Technical clarity for MEP consultants, procurement directors, and battery factory planning engineers.
What is the lowest dew point a DryAir desiccant dehumidifier can achieve?
Our specialized multi-stage rotary desiccant dehumidifiers can control supply air down to a stable -70°C dew point (equivalent to moisture content < 0.002 g/kg). This performance profile is essential for advanced lithium battery cell assembly, electrolyte filling, and solid-state cell prototyping.
Do you deliver complete turnkey dry rooms outside of mainland China?
Yes. Hangzhou DryAir delivers end-to-end turnkey projects internationally. Our scope covers initial engineering consulting, envelope paneling, dehumidification systems, ductwork fabrication, international shipping, on-site commissioning, and performance validation. We have successfully completed projects for global leaders such as Tesla, Northvolt, and TTI.
Which international safety and pressure certifications are available?
Depending on destination guidelines, DryAir equipment can be delivered certified to CE (Machinery, EMC, and Low Voltage Directives), UL/CSA for North America, ASME for pressure-rated heat exchangers, and EAC for Eurasian economic territories. The company is ISO 9001 certified and complies with the GJB national military standard.
What recovery efficiency is achieved by DryAir NMP recovery systems?
Our ZJRH series systems achieve a continuous N-Methyl-2-pyrrolidone (NMP) solvent recovery efficiency of ≥99% on roll-to-roll electrode coating lines. This drastically lowers solvent raw material procurement costs and guarantees exhaust compliance with local VOC environmental regulations.
What after-sales and warranty coverage is available to international facilities?
We provide an optional comprehensive two-year international service agreement. This includes dedicated English-speaking technical support, continuous cloud-based telemetry monitoring, guaranteed lead times on critical spares, and the on-site deployment of field engineers for scheduled overhauls.
How does Hangzhou DryAir reduce the regeneration energy of desiccant wheels?
We implement proprietary heat-recovery purge loops, internal condensation economizers, and air-to-air plate heat exchangers. By recapturing thermal energy from the hot reactivated exhaust to preheat incoming reactivation air, we reduce electric or steam energy demands by up to 30% compared to basic rotary wheels.
Complete Systems Catalog
Enterprise Product Catalog & Integrated Subsystems
Explore our complete commercial dehumidifier portfolio, dry room modules, and atmospheric recovery stations.
DHU Model
DHU Desiccant Dehumidifier
High-capacity silica/molecular sieve rotor unit engineered for clean industrial rooms and aerospace dry storage applications.
View DHU Range
Gigafactory Scale
Battery Dry Room Enclosures
Airtight cleanroom envelopes engineered for minimal envelope leakage (Class 3/4 airtightness) with automated airlocks.
Dry Room Enclosure
High Purity
ZJRH NMP Recovery Plant
Multi-stage condensation with zeolite runner concentration. Recovers high-grade liquid NMP for cathode manufacturing.
View ZJRH Series
Thermal Oxidation
JEN VOC Abatement System
Regenerative thermal oxidation and deep condensation designed for industrial process lines with high solvent exhaust.
JEN VOC Units
Water-Cooled
Commercial Water-Cooled Unit
Combines high-COP direct expansion or chilled water coils to condense high latent moisture loads economically.
Commercial Series
GJB Military
Military & Defense Preservation
Heavy-duty, vibration-resistant environmental control systems engineered for naval vessels, munition bunkers, and radar housings.
Defense Systems
Electronics Clean
Electronics & Semiconductor Air Handlers
Delivers micro-climatic accuracy for surface-mount technology (SMT), photolithography, and optical sensor fabrication.
Precision Air Units
Continuous Duty
Continuous Solvent Scrubbing
High-efficiency solvent condensation recovery stations built for round-the-clock battery gigafactory coating lines.
Scrubbing SystemsFactory Direct Engineering
Request Industrial Technical Specs & Psychrometric Audit
Send your plant blueprints, CFM airflow requirements, or target dew point parameters. Our senior HVAC engineering team will return a customized psychrometric heat-mass calculation within one business day.
Hangzhou DryAir Treatment Co., Ltd.
Dedicated overseas support & factory technical contact:
Direct Phone: +86 571 8990 5557
Engineering Email: [email protected]
Plant: No. 2088 Keji Road, Qingshan Industrial Park, Lin'an, Hangzhou, Zhejiang Province, China