20年以上既有建筑外墙外保温系统研究

采用红外热成像仪、一体式智能粘结强度检测仪、热流计式导热仪、数字式氧指数测定仪等对20年以上的既有建筑外墙外保温系统的拉伸粘结强度及保温材料的氧指数、导热系数、六溴环十二烷(HBCD)含量进行测试。根据现场和实验室的测试结果,在连接安全、防火安全及热工节能方面更加有针对性地对既有建筑外保温系统性能进行评价,2个项目的测评结果均符合相关国家或行业标准的要求。

杭州地区建筑外墙热工计算示例

建筑节能是我国一项重要的长期的基本国策,它涉及到许多专业学科知识,涵盖了多个行业领域,是一项具有战略意义的系统工程。在此对墙体的热工性能作了阐述,并通过实例计算,对墙体的保温和隔热、外保温和内保温作了比较和分析,结果表明:外墙外保温的隔热性能优于外墙内保温;对夏热冬冷地区采用轻质高强的新材料时,不但要计算墙体的传热系数K值,还应计算热惰性指标D值。

Research on Thermal Insulation and Energy Saving of External Wall in City High-rise Building of Cold Area

This paper applies the method of numerical simulation and field detection, and studied energy-saving insulation characteristics on the external wails of high-rise buildings in cold area, analyze and recommend the best arrangement of building and the most generous exterior wall insulation system suitable for cold area, and the degree of insulation materials were studied. The results show that： the mode preferred cold area is exterior insulation, insulation material made of extruded polystyrene board, frame structure filling wall preferred ceramsite hollow block.