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HD-VHF Series Energy-Saving Variable Frequency Refrigerated Air Dryer
  • The electronic expansion valve can continuously adjust the flow rate within the range of 15% - 100%, adapting to drastic changes in load demands and avoiding problems such as under - feeding or over - feeding of the refrigerant.

The variable - frequency refrigerated air dryer can adjust the output cooling capacity according to the user's air consumption. Many users' equipment does not operate at 100% load all the time. For example, a user's equipment runs at 100% load during the day but only at 66% load at night. Using a fixed - frequency refrigerated air dryer means that some energy consumption at night is unnecessary. In contrast, the variable - frequency refrigerated air dryer can perfectly save this unnecessary energy consumption and achieve energy - saving effects.

For instance, the compressor of a 200 - cubic - meter refrigerated air dryer consumes 37.1 kWh of energy per hour when running at full load (100% state) during the day. At night, when the air consumption is relatively low, the compressor consumes 26.7 kWh of energy per hour when running at partial load (66% state). Calculated based on 12 hours at night, the energy saved in one night is: (37.1 - 26.7) * 12 = 124.8 kWh, achieving a 28.03% energy saving.

Note: Our company's products are constantly being optimized, and parameters are subject to change without prior notice.


Product Information

Product Details

Working Principle

  • The air consumption demand of users is not constant—it fluctuates with operational needs. However, traditional dryers consume a fixed amount of energy regardless of air usage. This is where the variable frequency refrigerated air dryer comes in.

  • When air demand is low, the variable frequency refrigerated air dryer adjusts the compressor speed via frequency conversion (without compromising the dew point of the finished air), thereby reducing the overall operating energy consumption. When air demand is high, it increases the compressor speed through frequency conversion to maintain the required dew point of the finished air.

  • By regulating the compressor speed based on real-time air usage, the variable frequency refrigerated air dryer achieves significant energy savings.

Product Features

  • Outstanding energy - saving performance.

  • Provides a constant cooling capacity to ensure a stable pressure dew point.

  • Enables soft - start of the motor, resulting in minimal impact on the power grid.

  • Comes with networking functionality, allowing real - time monitoring of data such as machine current and frequency.

  • Extends the service life of the equipment.

  • Reduces equipment maintenance costs.



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  • No.4 Shishang Road, intelligent Equipment industry Park,Yuanzhou Town ,Boluo County,Huizhou City,Guangdong

  • Global Service Hotline: 400-897-0566

  • Tel:+86 752-6688208 6688209 6688516

  • E-mail:sales@gdhdair.com

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