寒冷地区农宅地基节能改造  

Energy-Saving Reconstruction of Farmhouse Foundation in the Cold Region

作　　者：邹惠芬[1] 胡海浪[1] 孔媛[1] 倪佳玉[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2015年第2期320-327,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51208313);地方高校国家级大学生创新创业训练计划项目(201210153018)

摘　　要：目的为减小由地基传热导致的热损失,提升房间整体热工性,研究寒冷地区农宅地基传热对住宅建筑能耗的影响,优化农宅地基节能改造.方法选择东北地区的农宅进行实验,测试农宅室内外温度和地面下方土壤温度,分析地基的传热过程;利用计算流体力学软件对地基模型的传热过程进行数值模拟,得到地基的温度场分布,分析设置不同厚度的保温层的地基传热过程,并对不同方案的模拟结果进行对比,得出最优方案.结果寒冷地区农村住宅建筑的地基改造可有效减少建筑能耗,当地基外表面敷设保温层为60 mm的苯板时其保温效果和经济性最好,室内地面和墙角相比于不加保温层温度分别增加0.712℃和3.519℃.结论地基的传热过程对室内热舒适性影响较大,在地基外表面设置保温层可有效提高室内墙角温度和室内地面温度,从而减少农宅建筑能耗.The paper aims to research effects of the ground heat transfer of farmhouse foundation on the residential building energy consumption. A typical farmhouse in cold region was selected to test it＇s inside, outside temperatures and temperature of the soil under ground. The heat transfer process of the foundation model was numerical simulated and analyzed by setting different thick- ness of the insulation layer with computational fluid dynamics software. The temperature filed of the foundation was obtained. Compared with different simulation results, a optimal plan was ob- tained. It is shown that when the thickness of benzene board used as outer insulation layer for foun- dation is 60 mm, the preservation and economical efficiency is best. The temperatures of indoor floor and comer increase 0. 712 ℃ and 3.519 ℃ respectively, compared with without insulation layer. Conclusion is that the heat transfer of foundation has a significant influence on the indoor thermal comfort. Setting the insulation layer on the outside of the foundation can effectively increase temperatures of indoor comers and ground. The energy-saving retrofit of farmhouse founda- tion can significantly decrease the residential building energy consumption.

关 键 词：农宅地基 节能 热分析 保温层 

分 类 号：TU210[建筑科学—建筑设计及理论]