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    • 10. 发明申请
    • MEASUREMENT OF MOISTURE CONTENT OF TIMBER
    • 木材水分含量的测量
    • WO1997011358A1
    • 1997-03-27
    • PCT/NO1996000222
    • 1996-09-19
    • INSTITUTT FOR ENERGITEKNIKKSCHATVET, Johnny
    • INSTITUTT FOR ENERGITEKNIKK
    • G01N23/204
    • F26B25/22G01N23/025G01N33/46
    • The moisture content of timber is measurable by irradiating the object of the measurement by fast neutrons and recording the number of resulting thermal neutrons which per unit time are attenuated by hydrogen atoms of the moisture content of the timber. However, studies have shown that there is a large difference between the effective cross section of hydrogen bound to water and hydrogen bound to wood. This fact is used to calibrate the measuring device to compensate for variations in the dry density of the timber with a satisfactory measuring accuracy. A measuring device calibrated in this manner can effectively be employed for the control of the course of drying when drying timber, such that a predetermined optimum course at all times can be followed by adjusting the parameters of drying according to the measured moisture content.
    • 木材的水分含量可以通过用快中子照射测量对象来测量,并记录每单位时间内由木材含水量的氢原子减弱的热中子数。 然而,研究表明,结合到水和结合到木材的氢的有效截面之间有很大的差异。 这个事实用于校准测量装置,以满足测量精度来补偿木材干密度的变化。 以这种方式校准的测量装置可以有效地用于干燥木材时的干燥过程的控制,使得可以随时根据测量的水分含量调节干燥参数来随时预定的最佳过程。