Process and apparatus for drying by air circulation

摘要

Includes a stage in which the air temperature in an air feed pipe (3) is raised by a heater (4) and circulation of fluid in the condenser (6) is sensibly null. Between heat accumulation and utilization phases is a cooling phase in which the drying air is cooled through a heat exchanger (14). At the heat accumulation stage the heater (4) for the air feed pipe (3) is inoperative. The coolant fluid circulates in a closed circuit including condenser (6) and reservoir (13). Method of drying by circulation of air in a circuit including an air feed pipe (3) with heater (4), a drying enclosure (2) in which clothes are placed , an output pipe (5) and condenser (6) circulating a fluid. The method has: (a) a heat accumulation phase in which the drying air in the feed pipe (3) is heated by the heater (4) and cooled by the condenser (6). The coolant fluid is stored in a reservoir (13) after passing through the condenser, and; a utilization phase for the accumulated heat in which drying air introduced into the air feed pipe (3) is heat by the fluid stored in the reservoir then cooled by the condenser/exchanger (6,14) fitted in the air output pipe.(5).