Actually, there are four types of desiccant air dryers available - each with a specific method for regenerating the desiccant air dryers.

Purge regenerated adsorption dryers ("heatless-type dryers") use expanded compressed air to purge moisture from the desiccant air dryers. They are best suited for lower air flow applications.

Heated purge regenerated dryers heat the expanded purge air to improve purge efficiency and reduce energy consumption by 25% compared to heatless-type dryers.

Blower regenerated dryers blow heated ambient air to regenerate wet desiccant air dryers. Since no compressed air is used, energy consumption is 40% lower than for heatless-type dryers.

Heat of compression dryers regenerate desiccant air dryers with the heat naturally given off by the compressor, without consuming additional energy.

This article comes from thecompressedairblog edit released