초록 ▼

A method of determining the moisture content of charge of wood having a moisture content below fiber saturation and being subjected to a Radio Frequency dielectric heating process to the degree required to control the process (e.g., terminate drying) by measuring the wood product package dimensions

A method of determining the moisture content of charge of wood having a moisture content below fiber saturation and being subjected to a Radio Frequency dielectric heating process to the degree required to control the process (e.g., terminate drying) by measuring the wood product package dimensions and monitoring the RF power KW and RF voltage KV being applied to the charge at the electrode(s) and further controlling (i.e., terminating) the process when the KW and KV being applied based on a pre-selected function indicates that the charge has reached a preselected moisture content.

대표청구항 ▼

[ We claim:] [10.] A method of controlling the operation of a process for Radio Frequency Dielectric Heating (RFDH) a charge comprising measuring the size of said charge to determine its dimensions of height h, width w and length l; subjecting the charge having a moisture content (in % by oven-dry w

[ We claim:] [10.] A method of controlling the operation of a process for Radio Frequency Dielectric Heating (RFDH) a charge comprising measuring the size of said charge to determine its dimensions of height h, width w and length l; subjecting the charge having a moisture content (in % by oven-dry weight) in the range of from 5% to 25% to RFDH; measuring the RF power KW being applied in kilowatts (kW) to the charge through electrode(s); measuring the RF voltage KV in kilovolts (kV) applied at the electrodes; and terminating the process cycle when the moisture content MC (as a percent by oven-dry weight of the charge) reaches a preselected value MC.sub.S as determined based on said measured values KW, KV, package dimesions h, l and w, and a predetermined function based on the measured values of KW, KV, and package dimensions h, l and w.