Technology Sourcebook
www.foodengineeringmag.com/articles/91989-desiccant-dryers

Desiccant dryers
March 8, 2014
Atlas Copco XD+ 550-3600 heat-of-compression desiccant dryers utilize zero purge cooling to eliminate compressed air consumption. One model produces a guaranteed dew point of -40°C; the second delivers dew point suppression due to extra heating elimination.
Atlas Copco Compressors; www.atlascopco.com