1/30/2026
In the fields of precision electronics, pharmaceuticals, food processing, and high-end warehousing, humidity is a silent killer. Excessive moisture can lead to product mold growth, metal corrosion, equipment malfunctions, and even electrical safety risks. A suitable industrial dehumidifier is not just a cost, but a crucial protective investment that ensures production continuity, maintains product quality, and avoids huge losses.
Industrial dehumidifiers actively and precisely remove moisture from the air using condensation, rotary, or mixing technologies, stabilizing ambient humidity within a preset safe range (e.g., 30%-50% RH). Their value lies in: Preventing quality loss: Preventing pharmaceuticals from becoming damp and deteriorating, electronic products from oxidizing, and powder raw materials from clumping.
Ensuring production processes: In processes such as spraying and injection molding, stable humidity is a prerequisite for ensuring high yield rates.
Protecting building structures: Preventing condensation and dripping water in warehouses, corrosion of steel structures, and mold growth on walls.
Saving energy: In humid environments, dry air is easier to heat and cool than humid air, indirectly reducing the load on air conditioning systems.
The root cause of selection errors often lies in incorrect estimation of dehumidification capacity. You can refer to the following simplified formula for preliminary estimation:
Required dehumidification capacity (kg/h) ≈ [Space volume (m³) × Air density (1.2 kg/m³) × (Current humidity - Target humidity) × Air change rate] / 1000
Key variable interpretation:
Space Volume: Length × Width × Height.
Current and Target Humidity: Measure the current humidity using a hygrometer and set the target value according to industry standards or product requirements.
Air Change Rate: Determined by factors such as the frequency of door and window opening and closing, and personnel entry and exit. A closed warehouse may only require 0.5-1 air changes per hour, while a workshop with frequent personnel and goods movement may require 2-4 air changes per hour.
| characteristic |
Refrigeration dehumidifier |
Rotary dehumidifier |
| Working principle |
The air is cooled below the dew point, causing moisture to condense and then heated before being discharged. |
It uses a moisture-absorbing wheel to absorb moisture, and then regenerates it with hot air, operating in a cyclical manner. |
| Optimal operating conditions |
Normal temperature and humidity environment (e.g., 20-30°C, below 60%RH) |
Low temperature and low humidity environment (e.g., 5-15°C, requiring RH below 30%) |
| Energy efficiency ratio |
High energy efficiency within its applicable range |
Energy efficiency is significantly better than refrigeration in low-temperature environments. |
| Application Examples |
Standard warehouse, underground parking garage, indoor swimming pool |
Defrost treatment for lithium battery drying rooms, chemical raw material warehouses, and cold storage facilities. |
Food and pharmaceutical industries: Focus on materials (stainless steel), hygiene standards, and precise humidity control to prevent microbial growth.
Electronics precision manufacturing: Requires extremely low humidity stability and dust-free air filtration to protect sensitive components.
Warehousing and logistics: The focus is on preventing condensation and product mold; selection must be based on warehouse insulation and cargo characteristics.
Swimming pools and water treatment facilities: Highly corrosive environments requiring special anti-corrosion coatings and powerful dehumidification capabilities.