States that spring, summer and autumn operation of ice rinks can be difficult because of problems caused by humidity. High humidity in the air above a cold ice rink creates fog, which interferes with skaters and spectators. Moisture also condenses on the ice surface, which means the refrigeration system must work hard to freeze the condensate, removing its heat through several inches of ice. States that, depending on the relative costs of electrical power and thermal energy, a desiccant dehumidifier can reduce overall operating costs and extend the operating season of an ice rink by lowering the humidity to 40% even during humid seasons. Describes such an installation in an ice rink in Grand Rapids, Michigan.

KEYWORDS: Ice rinks, USA, case studies, dehumidifiers, desiccants, cost in use, humidity, costs