Desiccant wheel dehumidifiers are highly efficient moisture-removing devices widely used in industrial and commercial settings. At the core of these machines is a rotating desiccant wheel, typically coated with silica gel, molecular sieves, or other hygroscopic materials. As air passes through the wheel, the desiccant adsorbs moisture, effectively reducing humidity levels. This continuous process allows for high-capacity dehumidification, making it ideal for applications that demand strict humidity control,

Compared to traditional refrigerant dehumidifiers, desiccant wheel models can operate efficiently even in low-temperature environments and achieve extremely low relative humidity levels (as low as 1% RH), ensuring stable conditions crucial for sensitive processes and product preservation. Their energy-efficient design, coupled with minimal maintenance requirements, further enhances their appeal in industries where humidity management is critical.

Structure of the Rotary Dehumidifier:

• Desiccant Wheel (Rotor): The core component is a large, porous wheel made from a desiccant material (like silica gel or zeolite) that absorbs moisture from the air. The wheel is divided into two sections: the process air section and the reactivation air section.

• Air Inlet and Outlet: The device has separate air channels for the process air (the air that needs to be dehumidified) and the reactivation air (air used to regenerate the desiccant).

• Blowers/Fans: These move the air through the system, one for the process air and one for the reactivation air.

• Heater: a heater is used to warm the reactivation air to regenerate the desiccant material by releasing the absorbed moisture.

Applications:

1. Industrial, Scientific Research, Military and Municipal Engineering

• Including small storage rooms, substations, museums, archives, control rooms, pump houses, laboratories, etc.
• Key Requirements:
  • Museums/Archives: Maintain humidity to prevent mildew damage to cultural relics and documents.
  • Substations/Control Rooms: Reduce corrosion risks to electrical equipment from moisture, avoiding short circuits.
  • Laboratories: Ensure constant humidity for experimental accuracy (e.g., chemical analysis, biological culture).

2. Scenarios with Strict Humidity Control (RH < 45% at 22℃-24℃)

• Covering production workshops, warehouses, and special technical rooms.
• Typical Industries:
  • Electronics Manufacturing: Prevent moisture damage to precision components (e.g., semiconductor chips, PCB production).
  • Pharmaceutical Warehousing: Comply with GMP standards to avoid drug deliquescence.
  • Lithium Battery Production: Control humidity to prevent electrolyte deterioration and ensure battery safety.

3. Scenarios with High Moisture Generation (Regardless of RH Requirement)

• E.g., food processing plants, car washing workshops, or areas with frequent water operations.
• Challenge: Moisture from processes (e.g., steam, cleaning) requires continuous dehumidification to prevent equipment corrosion.

4. Low-temperature and High-humidity Environments

• E.g., cold storage rooms (2℃-8℃) or outdoor facilities in rainy regions.
• Risk: Condensation on surfaces may damage materials (e.g., metal rust, insulation degradation).

5. Low-temperature Environments Prohibiting Condensation

• E.g., air-conditioned cold halls, refrigerated transport vehicles, or precision instrument rooms.
• Control Objective: Maintain dew-point temperature below ambient temperature to avoid water droplets on equipment surfaces.

JETEX Technical Performance Parameters

Successful Cases