This chapter covers (1) the types of dehumidification equipment for liquid and solid desiccants, including high-pressure equipment;(2) performance curves; (3) variables of operation; and (4) some typical applications. Using desiccants to dry refrigerants is addressed in Chapter 8 of the 2014 ASHRAE Handbook—Refrigeration. Methods of DehumidificationDesiccant DehumidificationLiquid Desiccant EquipmentSolid-Sorption EquipmentRotary Solid-Desiccant DehumidifiersEquipment RatingsEquipment Operating RecommendationsApplications for Atmospheric-Pressure DehumidificationDesiccant Drying at Elevated PressureEquipment TypesApplications ISBN: 978-1-947192-53-9 (for SI versions of chapters)ISSN: 1930-7705 (for SI versions of chapters)