Fuente: WIPO "apiculture" A dehumidification or dehydration Unit is comprised by a coil or heat exchanger of evaporation (1), a coil or heat exchanger of condensation (2), an expansion valve (3), a rejected heat air stream (4) by the condensation coil (2), a compressor (5) or another equipment for increasing pressure, a ventilator (6) is provided for rejection of heat to environment from the parts of the condensation coil (2) and a circuit or substance (7) that is to be dehydrated or demisted. A ventilator unit (8) for recirculation of air and a gutter (9) for collection of condensate in the coil, which is collected by the condensate drain (10), are also provided. An air duct (12) is provided for rejection of heat. The condensation coil (2) is divided by a border or wall (16), to use part of the heat for the reheating of the cold and dry air.