The Rotary Batch dryer-dehumidifier-cooler from Munson Machinery Co. Inc. is for direct or indirect drying, dehumidifying or cooling of bulk solid materials.  The configuration for direct drying, dehumidifying or cooling is equipped with a material intake chute with ports for introducing heated or cooled air directly into the batch. Configurations for indirect drying, dehumidifying or cooling come with a jacketed vessel that heats or cools the batch indirectly, and are offered with nitrogen-purged systems that eliminate exposure to the atmosphere.