SECADO INDUSTRIAL DEL PINO RADIATA: TIEMPO DE ESTERILIZACIÓN CON CALOR Y EVOLUCION TEMPORAL DE LA TEMPERATURA

Abstract

In this work were studied the heat sterilization time (HT) and the evolution time of the internal wood temperature during industrial drying of radiata pine. The experimental design included as variable the air temperature of the initial treatments in saturated atmosphere and the wood thickness. The minimal time required to satisfy the demands of HT specify by the NIMF 15 standard between 16 and 100 mm is predicted. The interrelationship between internal wood temperature and various schedules drying are analyzed. The minimal time to heat sterilization wood the HT condition during the industrial drying of the radiata pine was between 58 and 224 minutes for 16 and 100 mm of wood thickness respectively. The internal temperature tends quickly until the wet temperature in early stages of drying, it favorise the application of accelerated and high temperature schedules to satisfy the HT demand of the NIMF 15 standard.