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    Cotes Ultradry

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    Cotes Ultrady Production Doors-min-1-1
    Product Thumbnail 1000x1000 How Ultradry works
    BM_Ultrady_Man-with-Reflection_Sustainable-Battery-27072023
    Cotes Ultrady Production Doors-min-1-1
    Product Thumbnail 1000x1000 How Ultradry works

    Cotes Ultradry

    Ultra-low humidity dry-air systems for battery dry rooms

    Cotes Ultradry is a high-performance adsorption dry-air system developed for applications requiring extremely low humidity levels and very low dew points.

    The system is primarily designed for battery dry rooms in lithium-ion battery manufacturing, where stable ultradry environments are critical for production quality and process stability.

    Unlike conventional dry-room dehumidification systems that rely heavily on high-temperature electrical heating, Cotes Ultradry uses Cotes Exergic Technology®, which enables regeneration using low-temperature heat sources such as hot water.

    This approach significantly reduces electrical energy consumption while maintaining the very low dew points required in battery production environments.

    Explanation of Naming

    The product designation reflects the system’s primary function:

    • Ultra – extremely low humidity levels
    • Dry – ultra-dry air production for critical manufacturing environments

    The Ultradry platform refers to a system architecture consisting of intake modules and main drying modules rather than a single dehumidifier unit.

    System Architecture

    Cotes Ultradry systems typically consist of two main elements:

    Intake modules
    Pre-dry incoming air before it enters the main drying stage.

    Main modules
    Perform the final drying stages required to reach ultra-low dew points for battery dry rooms.

    Depending on the project requirements, systems can be configured as:

    • Two-stage systems
    • Three-stage systems

    This modular architecture allows systems to scale with dry room size and required dew point levels.

    Typical Applications

    Cotes Ultradry systems are primarily used in battery manufacturing environments, including:

    • lithium-ion battery dry rooms
    • gigafactory production facilities
    • battery research and development labs
    • pilot production lines

    These environments require extremely low and stable humidity levels to prevent reactions between lithium compounds and moisture.

    Read more + Read less -
    Ultra-low dew point capability: Designed to achieve dew points typically ranging from −40 °C down to −120 °C in controlled dry-room environments.
    Exergic Technology®: Patented multi-stage adsorption technology enabling regeneration with low-temperature heat sources.
    Reduced electrical energy consumption: Systems can significantly reduce electrical heating demand compared to conventional dry-room dehumidification systems.
    Multi-stage adsorption architecture: Uses multiple silica-gel rotors arranged in stages to progressively reduce moisture levels.
    Flexible energy sources: Compatible with hot water from heat pumps, waste heat, solar thermal systems or other sustainable energy sources.
    Scalable system architecture: Built from intake and main modules that can be combined to match the airflow and dew-point requirements of the dry room.
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    TECHNICAL DATA

    Model DRY AIR (M3/H) REGENERATION AIR (M3/H) CONNECTED LOAD (kW) MOISTURE REMOVAL CAPACITY (KG/H) DIMENSIONS (WxDxH) DATASHEET PRODUCT MANUAL
    Cotes Ultradry Datasheet
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    how it works

    Cotes Exergic Technology®

    The challenge associated with existing non-Cotes dehumidification systems lies in their heavy reliance solely on electricity and gas, coupled with inefficient air-drying methods operating at very high temperatures. This combination creates an unstable and hazardous operating environment.

    Cotes developed the Exergic Technology®, an innovative solution maximising energy savings by using three rotors and sustainable energy sources.

    With the patented Cotes Exergic Technology®, you can utilise a combination of sustainable energy sources to achieve considerable energy cost savings and large carbon footprint reductions. All you need is hot water at 80-90°C heated by a sustainable energy source:

    • Waste heat (from elsewhere in the li-ion battery production)
    • Biomass or Biogas (if available and sustainable)
    • Solar thermal panels
    • CO₂ Heat Pump used for both heating and cooling. Pay once and use twice.
    • Electricity (From sustainable energy sources, i.e., wind power, hydropower, solar power and/or nuclear power)
    • Gas **

    Because the energy to heat the water can come from a combination of sustainable energy sources and can be changed in the future if the price of energy changes, it makes the Cotes Exergic Technology more sustainable and more future-proof. This flexibility is not possible if the dehumidifier is built for gas regeneration specifically.

    **Cotes does not recommend or consider gas as a source of sustainable energy due to the environmental footprint. We recommend utilising energy for the hot water from sustainable or “green” energy sources instead. However, if gas is a requirement, the water can come from a central gas boiler.

    Cotes Energic flow diagram 2
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    ULTRA-LOW HUMIDITY CONTROL

    Designed for industrial environments where extremely low dew points are required for manufacturing processes.

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    MULTI-STAGE ADSORPTION DRYING

    Uses multiple adsorption rotors to progressively reduce moisture levels.

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    LOW-TEMPERATURE REGENERATION

    Exergic Technology® enables regeneration using low-temperature heat sources such as hot water.

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    INDUSTRIAL SYSTEM INTEGRATION

    Systems are designed to integrate with dry-room air handling systems and industrial control architectures.

    Frequently Asked Questions

    For our full FAQ section you can go to www.cotes.com/FAQ 

    On this page we highlight some of the more frequently asked questions from customers.

     

    Why are ultra-low humidity levels required in battery production?
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    Lithium-ion battery manufacturing processes involve materials that react with moisture. Even small amounts of humidity can affect product quality and production stability.

    Dry rooms maintain extremely low humidity levels to prevent moisture contamination during production.

     Traditional dry-room systems rely heavily on high-temperature electrical heating for regeneration. Exergic Technology® allows regeneration using lower-temperature heat sources such as hot water, reducing electrical energy consumption. 

     Ultradry systems are designed to achieve very low dew points typically ranging from −40 °C down to −120 °C, depending on system configuration and process requirements. 

     Yes. The regeneration process can utilise heat from heat pumps, waste heat, solar thermal systems or other sustainable energy sources.