B. Warwicker, UK
Desiccant is a material for modifying humidity; the chapter explains the absorption and adsorption desiccant processes. The chapter reviews the commercial, solid and liquid desiccant processes, together with selected practical applications. Health, comfort and air quality, as well as energy coefficient of performance (COP), energy efficiency ratio (EER) and seasonal energy efficiency ratio (SEER) are discussed. Finally the chapter looks to the future and reviews the more natural approach to modifying building humidity with normal building materials and reviews practical applications.