复合式实木铝芯电加热地板传热效果分析  

Analysis of Heat Transfer Effect for Compound Solid Wood Aluminum-Core Electro-Thermal Floor

作　　者：周玉成[1] 李响 任长清[2] 马岩[2] 杨春梅[2] 白岩[2] 邓英健 Zhou Yucheng;Li Xiang;Ren Changqing;Ma Yan;Yang Chunmei;Bai Yan;Deng Yingjian(School of Information and Electrical Engineering,Shandong Jianzhu University Jinan 250101;College of Mechanical and Electrical Engineering,Northeast Forestry University Harbin150040)

机构地区：[1]山东建筑大学信息与电气工程学院,济南250101 [2]东北林业大学机电工程学院,哈尔滨150040

出　　处：《林业科学》2018年第11期1-6,共6页Scientia Silvae Sinicae

基　　金：泰山学者优势特色学科人才团队(2015162);哈尔滨市科技局创新人才基金(2016RQYXJ015)

摘　　要：【目的】提出实木地板与铝合金芯板复合的电加热地板结构,结合电热线缆嵌入式制造工艺,构建新型实木铝芯电加热地板,以提高电加热地板采暖的热舒适性和传热效率并降低安全隐患,为电加热地板的研发、生产提供技术支持。【方法】以高档实木拼板为面板层、低档单板为底板层,通电的发热电缆与铝合金芯板组合构成发热芯层,将发热芯层嵌入实木复合地板面板层凹槽内,石棉网作为保温隔热层紧贴在发热芯层下方以保证电加热地板的热效率,采用脲醛树脂对面层和底层板材进行胶合,经过高温高压后制成企口地板。利用有限元分析软件对复合式实木铝芯电加热地板的供暖过程进行仿真。【结果】未添加铝芯散热板的电加热地板1 h后地板表面温度为33.3℃,加热层温度过于集中,高达60℃,存在安全隐患。添加铝芯散热板且散热板为普通平板式结构的电加热地板1 h后地板表面温度约为29.7℃;肋板式铝芯散热结构的地板表面热量不如平板式均匀,但地板表面温度约为34.5℃,且加热导线层温度最低,综合传热效率最好。【结论】含肋板式铝芯散热结构的电加热地板上表面温度高于不含铝芯散热结构的电加热地板,升温速度快;铝芯的结构形式对传热效果有重要影响,肋板式铝芯电加热地板升温速率快,传热效果更好。thermal floor structure combined with solid wood and aluminum alloy core board is proposed, combined with the embedded manufacturing process of electric heating cable, to build a new type of electro-thermal floor with solid wood and aluminum core, in order to improve the thermal comfort of the electr o-thermal floor heating and the heat transfer efficiency, to reduce the security hidden danger, and to provide technical support for the development and production of electro-thermal floor.【Method】 The high-grade solid wood plate is used as the surface layer, and the low-grade veneer as the bottom layer.The electrically heating cable and aluminum alloy core plate are combined to form a heating core layer, and then the heating core layer is embedded into the groove of the panel layer of solid wood composite floor. The asbestos net is adhered as a thermal insulation layer under the heating core layer to ensure the thermal efficiency, the surface layer and the bottom plate are glued by a urea-formaldehyde resin glue,the tongue-and-groove floor was made by the high temperature and high pressure made.The finite element analysis software was used to simulate the heating process of composite solid wood floor with aluminum core.【Result】 The surface temperature of the electro-thermal floor without aluminum core is 33.3 ℃ after 1 h heating, the temperature of the heating layer is concentrated, up to 60 ℃, existing safety hazard. When the electro-thermal floor is installed with a flat aluminum core radiator plate,the surface temperature of floor is about 29.7 ℃ after 1 h heating;As for the floor with ribbed aluminum core,the surface temperature of the floor is about 34.5 ℃,though the heat dissipation of ribbed structure is not as uniform as the flat type, but the temperature of the heating wire layer is the lowest and the comprehensive heat transfer efficiency is the best.【Conclusion】 The upper surface temperature of the electro-thermal floor with ribbed aluminum core is higher than that without the aluminum

关 键 词：实木地板 铝芯 电加热 有限元 

分 类 号：S772[农业科学—森林工程] TU111[农业科学—林学]