杉木集成材薄板制备电热地板的热工性能  

Thermal performance of electrically heated flooring prepared by thin Chinese fir glulam

作　　者：杨保铈 贺绍均 王丰[1] 阙泽利[1] 潘彪[1] 朱一辛[1] 

机构地区：[1]南京林业大学材料科学与工程学院,南京210037

出　　处：《林业工程学报》2016年第1期46-50,共5页Journal of Forestry Engineering

基　　金："十二五"国家科技支撑计划(2012BAD24B010204)

摘　　要：以低等级杉木六棱柱体锯解薄板为基材，椽木为面板，采用内置碳纤维发热线的形式制作电热地板。在70，80，90和100 V 4种电压下对电热地板进行了热工性能的测试。结果表明：4种电压下均能达到《辐射供暖供冷技术规程》中规定的地板表面设计平均温度，80 V电压以上时地板的升温速率可达到地采暖用木质地板导热效能的要求；地板表面温度比距地板表面O．5 m及以上高度的室内温度高3～7℃，且分布均匀；70 V电压下功率最低，且每决地板由安全的35 V低电压驱动；加热试验后，电热地板面层净宽收缩率为0．57％，宽度方向翘曲度增加1．99％，长度方向翘曲度仅增加0．10％。Chinese energy structure has been changed as environment protection obtains more and more concern. In thefield of building heating, traditional heating systems are subjected to transformation as a response to market demand andgovernment regulation. Electric radiant floor heating system is considered as an energy saving and eeo-friendly solution.In this paper, electrically heated flooring was designed and evaluated both technically and economically. The flooring,with board sawn from low-grade Chinese fir hexagon glulam beam as substrate and oak veneer as face layer, was embed-ded with carbon fiber lines as heat source. The thermal performance tests were performed at 70, 80, 90 or 100 V, andthe power consumption and dimensional stability of the flooring were evaluated. The results showed that the average tem-perature of the flooring surface could meet the demand of technical standard of radiant heating system. The heating rate a-bove 80 V could meet the demand on heat conductivity of wood flooring. The temperature of the flooring surface was uni-form and 4-7 ℃ higher than that at 0. 5 m above the ground or higher. The power was the lowest when the voltage was70 V. In this case, each piece of flooring was driven at 35 V. After the heating test, the width shrinkage was 0. 57%,the warping in the width and longitudinal direction increased by 1.99% and 0. 10%, respectively.

关 键 词：低等级杉木 电热地板 热工性能 尺寸稳定性 

分 类 号：TS653[轻工技术与工程]