常规木材干燥室排汽热能回收的理论预测  

Theoretical prediction of conventional wood drying kiln exhaust gas heat recovery

作　　者：伊松林[1] 姚雪莉[1] 张璧光[1] 何正斌[1] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083

出　　处：《华北电力大学学报（自然科学版）》2010年第3期88-92,共5页Journal of North China Electric Power University：Natural Science Edition

基　　金：十一五"国家科技支撑计划项目(2006BAD18B0802);教育部新世纪优秀人才支持计划"木材太阳能干燥相变储热系统特性及优化匹配的研究

摘　　要：在对热管换热器热能回收率测试的基础之上,以从初含水率50%干至终含水率10%的柞木为标准材,根据不同干燥阶段干燥参数的变化,对其整个干燥过程中的排湿热量损失进行了理论计算,并对此种热能回收装置的热能回收量进行理论预测。计算结果表明:干燥1 m3柞木的总排湿能量为1.22×106kJ,热能回收总量为2.2×105kJ,相当于节约热值为29 260 kJ/kg的标煤7.52 kg,该研究可为木材常规干燥室排湿热能回收装置的设计、选型及最佳配比的确定提供理论参考。Based on the test for heat pipe heat recovery efficiency,used oak whose initial moisture content is 50% and ultimate moisture content is 10% as standard material,on the basis of drying parameters in different stage,theoretical exhaust heat during the whole drying progress and its heat recovery volume were calculated.The calculation result shows that：when drying 1 m3 oak,the total exhaust energy is 1.22×106 kJ,the heat recovery volume is 2.2×105 kJ which equal to 7.52 kg standard coal whose heat value is 29 260 kJ/kg.This study can provide theoretical reference for designing,selection and optimum proportion conventional wood drying kiln exhaust gas heat recovery equepment.

关 键 词：木材干燥 热能回收量 理论预测 热管换热器 

分 类 号：S782.31[农业科学—木材科学与技术]