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    Cotes Cold Store C35C

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    C35 Basic and Coldstore
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    C35 Basic and Coldstore
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    Cotes Cold Store

    C35C

    Adsorption dehumidifier for cold storage and refrigerated environments

    The C35C is part of the Cotes Cold Store product family — adsorption dehumidifiers developed specifically for humidity control in refrigerated and frozen storage environments.

    Cold stores are exposed to continuous moisture ingress through door openings, air exchange and product handling. When humid air enters low-temperature environments, moisture quickly condenses or freezes on cold surfaces.

    The C35C removes moisture from the air before condensation or ice formation occurs, helping stabilise the internal climate of cold storage facilities.

    Unlike refrigeration systems, which primarily control temperature, the C35C uses adsorption dehumidification to control the dew point of the air, reducing condensation and ice formation inside refrigerated environments.

    Explanation of Naming

    The product designation follows Cotes naming logic:

    • C – Cotes adsorption dehumidifier platform
    • 35 – Capacity class within the product family
    • C – Cold Store application variant

    The Cold Store designation identifies units optimised for low-temperature environments rather than configurable Modular installations.

    Position within the Cotes Cold Store family

    The C35C represents the mid-capacity unit within the Cold Store range.

    The Cold Store family consists of:

    • C30C – compact cold storage dehumidifier
    • C35C – mid-capacity unit for larger refrigerated environments
    • C65C – high-capacity system for large cold storage facilities

    Although based on the same core adsorption technology as the Cotes Modular platform, Cold Store units are delivered as dedicated, pre-engineered configurations rather than modular systems with add-on modules.

    This ensures predictable and stable performance in cold environments.

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    Cold-environment operation: Designed for humidity control in refrigerated and frozen environments where condensation and ice formation must be prevented.
    Adsorption drying principle: Rotor-based adsorption removes moisture from the air and controls dew point independently of refrigeration systems.
    Cold-store optimised design: Additional insulation and internal design adaptations help prevent icing and condensation within the unit.
    Stable low-temperature operation: Engineered to operate reliably in cold storage environments down to approximately −25 °C.
    Reduced ice formation: By lowering the dew point of incoming air, the system reduces condensation and ice formation on cold surfaces.
    Mid-capacity cold-store system: The C35C provides increased airflow and drying capacity compared to the C30C for larger cold storage environments.
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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
    C30C 300 50 1.4 + 0.34 0.3 554 / 399 / 786 Datasheet
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    C35C 750 / 1000 96 / 129 2.8 +1 / 5.3 +1 0.5 / 0.9 758 / 494 / 1116 Datasheet
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    C65C 1900 / 3700 340 8 +2 / 11 +2 1 / 3 1204 / 783 / 1741 Datasheet
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    COLD STORE HUMIDITY CONTROL

    Designed to prevent condensation and ice formation in refrigerated environments where moisture ingress occurs through door openings and air exchange. 

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    ADSORPTION DRYING PRINCIPLE

    Rotor-based adsorption drying removes moisture from the air independently of cooling systems. 

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    LOW-TEMPERATURE OPERATION

    Engineered for stable operation in cold storage environments where ambient temperatures may fall below freezing. 

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    COLD-STORE OPTIMISED DESIGN

    Additional insulation and internal design adaptations help prevent internal icing and ensure stable operation. 

    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 is dehumidification needed in cold stores?
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    When humid air enters a cold environment, moisture condenses or freezes on cold surfaces. This leads to ice formation, slippery floors, reduced cooling efficiency and increased defrost cycles.

    Dehumidification removes moisture before condensation or ice formation occurs.

    Refrigeration systems primarily control temperature. Moisture control in cold environments depends on the dew point of the air, which cannot always be managed through cooling alone.

    Adsorption dehumidifiers reduce the dew point of the air and therefore prevent condensation and ice formation.

    Excess humidity in cold stores can lead to:

    • ice formation on floors and equipment
    • reduced evaporator efficiency
    • increased defrost cycles
    • safety hazards for personnel
    • product quality issues

    Controlling humidity helps stabilise the cold storage environment.

    Cold Store units are based on the same adsorption technology but are optimised specifically for cold environments. They include additional insulation and cold-environment adaptations and are delivered as fixed configurations rather than modular systems.