Extreme Low Humidity (ELH) Product
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Extreme Low Humidity Unit for Battery Manufacturing
The ELH is a desiccant dehumidification unit for lithium-ion battery dry rooms, delivering supply dew points from -40°F to -76°F (-40°C to -60°C). Each unit is a custom arrangement of standard components in a thermally broken, low-leakage casing, engineered to the process condition of the plant it serves.
Supply Dew Points to -76°F (-60°C)
The desiccant rotor dries supply air to dew points as low as -76°F (-60°C) for lithium-ion battery manufacturing dry rooms. To keep the supply dew point steady in continuous duty, each unit has a purge section, pre-cooling and post-cooling coils, and a thermally broken, low-leakage casing.
- Supply dew points from -40°F to -76°F
- Silica gel desiccant rotor with purge section
- Pre-cooling and post-cooling coils
- Rotor air seals to 8 in. w.g. differential
Basis: Performance at the process condition is confirmed on the design datasheet Air2O issues for each project.
Heat Recovery and Rotor Speed Options
ELH units regenerate the desiccant with natural gas or hot water, according to the energy source available on site. Optional adaptive rotor speed matches desiccant operation to the moisture load, and optional heat recovery returns regeneration exhaust heat through a hot water coil in the outdoor air stream.
- Natural gas or hot water regeneration
- Direct gas-fired regeneration heater
- Optional adaptive desiccant rotor speed
- Optional regeneration exhaust heat recovery
Single-Rotor or Double-Rotor Arrangements
Units are built as single-rotor or double-rotor packages and shipped as a single section. MERV 8 and MERV 14 filters sit ahead of a HEPA final filter, so one unit delivers supply air that is both dried and HEPA filtered.
- Single-rotor or double-rotor package
- MERV 8, MERV 14, and HEPA filtration
- Shipped as a single section
- Optional face and bypass dampers
Sequence Written to the Process
The sequence that holds supply dew point is written to the dry room process condition and runs on a native BACnet DDC controller. The controller manages the inverter-duty rotor drive motor, regeneration heat, and cooling coils, and connects to the building management system over BACnet or Modbus.
- Native BACnet DDC controller
- BACnet/IP or MS/TP, Modbus TCP or RTU
- Sequence written to the process condition
- Inverter-duty rotor drive motor
Leakage Class CL1 in Intertek Testing
In Intertek testing, a 4 in. double-wall, polyurethane-injected ELH casing achieved leakage Class CL1 at 8 in. w.g. negative pressure, with deflection equivalent to Class CD1. The rotor is built for continuous duty, with washable, non-shedding desiccant media, seals rated for 400°F (204°C) continuous service, and permanently sealed bearings.
- Leakage Class CL1, Intertek tested
- Deflection equivalent to Class CD1
- Triple-layer gasket, dual-level caulking
- Washable, non-shedding desiccant media
Basis: Casing classes as defined in AHRI Standard 1350, where CL1 and CD1 are the most stringent classes, from Intertek testing of an ELH casing. Leakage was tested at 8 in. w.g. negative pressure. Measured deflection was 0.0005 of span, within the Class CD1 limit of 0.0033 that the standard sets at 10 in. w.g. Results apply to the casing tested.
Air2O's Extreme Low Humidity (ELH) solutions are specifically engineered to meet the stringent low dew point requirements of the lithium-ion battery industry. We understand the critical need for maintaining ultra-low humidity conditions to preserve material integrity and optimize battery performance. With our ELH systems, we provide unparalleled environmental control precision, achieving dew points as low as -60°F.
Preserving material integrity is of utmost importance in the lithium-ion battery industry, as any water contamination or premature chemical reactions can have serious consequences on battery safety and efficacy. Our ELH solutions are designed to prevent such issues, ensuring that your batteries operate at their highest level of performance.
By meticulously maintaining ultra-low humidity conditions, Air2O's ELH systems enable you to protect the integrity and lifespan of your battery materials. Our precise environmental control prevents the intrusion of moisture, which can lead to degradation and impede the battery's overall performance and reliability.
With our state-of-the-art ELH solutions, you can trust that your lithium-ion batteries are in capable hands. Our engineering expertise and attention to detail allow us to deliver the precise control and stability necessary for optimal battery performance. You can rely on our systems to maintain the strict environmental conditions required for your operations.
Whether you need to prevent water contamination, mitigate the risk of premature chemical reactions, or optimize battery safety and efficacy, Air2O's ELH systems provide the ideal solution. Our commitment to delivering the highest level of performance and reliability ensures that your lithium-ion batteries are protected and perform at their best.
The schematic represents comprehensive design for a moisture adsorption unit with purge feature, designed to efficiently eliminate excess moisture from your indoor environment.combines the principles of moisture adsorption and targeted purging to deliver optimal dehumidification performance, ensuring a comfortable and healthy indoor space.
