
HOC (Heat of Compression) air dryers is a type of compressed air dryer that utilizes the heat generated during the compression process to regenerate the desiccant material, effectively removing moisture from the compressed air. These dryers are known for their energy efficiency and ability to reach desired dew points, making them suitable for various industrial applications.
HOC type dryer has NIL operating cost and it has no purge loss. In this design hot air coming out from Air compressor discharge is used for regeneration of desiccant and so no external electric regeneration heating is required. This design easily produces dry air of (-) 40° C Dew Point.
Key features of HOC air dryers:
- Heat of Compression: The core principle involves using the heat produced when air is compressed to dry the desiccant material, eliminating the need for external heat sources.
- Dual-Tower Design: Many HOC dryers utilize a dual-tower system, where one tower is adsorbing moisture while the other is being regenerated by the heat.
- Energy Efficiency: By using the heat of compression, these dryers can significantly reduce energy consumption compared to other dryer types.
- Dew Point: HOC dryers can achieve desired dew points, making them suitable for applications requiring very dry compressed air.
- Applications: HOC dryers are used in various industries where dry compressed air is essential, such as manufacturing, pharmaceuticals, and food processing.

