Лесотехнически Университет

Резюме

A mathematical description of the energy Q_ice-bw required for melting the temperature dependent part of frozen bound water in wood, using a software package Table Curve 2D v.5.01 has been presented. This package allows for the selection of equations, which provide the best similarity between the calculated with them values of Q_ice-bw during thermal treatment of wood containing ice and the respective numerical data obtained with an adequate temperature-energy model of Q_ice-bw. The type and coefficient values of the Table Curve equations for Q_ice-bw in this work have been determined for the case of thermal treatment of frozen beech wood with an initial temperature of −1 ^oC, −10 ^oC, −20 ^oC, −30 ^oC, −40 ^oC and moisture content of 0.4 kg·kg^-1, 0.6 kg·kg^-1, and 0.8 kg·kg^-1. The equations obtained for Q_ice-bw can be used for development and automatic implementation of scientifically based energy-efficient regimes for steaming or boiling of frozen wood materials with different parameters.