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全球能源消耗比例中,建筑耗能占总能源消耗的比重较高。近年来建筑外墙保温技术成为建筑耗能节约设计中的主流技术,是我国绿色生态节能设计中的主流形式。传统建筑外墙方法能耗较大且保温性能较差。提出将聚氨酯硬泡技术运用于建筑外墙保温中,硬质聚氨酯泡沫是较优异的阻热保温材料。首先,分析了现有的浇注聚氨酯硬泡保温、喷涂聚氨酯硬泡保温、粘贴聚氨酯硬泡保温等聚氨酯高效保温节能技术。对以上三种方式的系统构成、操作流程及优势分别阐述;其次,通过实验对聚氨酯硬泡技术系统性能参数进行分析,探讨导热系数及粘贴强度对聚氨酯泡沫保温的影响;最后,通过实际监测建筑室内温度,运用聚氨酯硬泡技术后室内温度明显上升。实验证明,聚氨酯硬泡技术应用于建筑节能设计中,不仅降低了能耗,提高了室内温度,而且大大降低了住宅单位面积二氧化碳的排放量,达到了绿色节能设计的目的。
In the proportion of global energy consumption, the proportion of building energy consumption in total energy consumption is high. In recent years, building exterior insulation technology has become the mainstream technology in building energy-saving design, which is the mainstream form of green energy-saving design in China. Traditional exterior wall methods consume more energy and have poor thermal insulation properties. Proposed polyurethane foam technology used in building exterior insulation, rigid polyurethane foam is more excellent thermal insulation materials. First of all, the existing technology of polyurethane high-efficiency thermal insulation and energy-saving such as polyurethane foam rigid insulation, polyurethane rigid foam insulation and polyurethane rigid foam insulation are analyzed. Secondly, the system performance parameters of polyurethane rigid foam technology are analyzed through experiments to explore the influence of thermal conductivity and adhesive strength on the thermal insulation of polyurethane foam. Finally, through the actual monitoring of the building Indoor temperature, the use of polyurethane foam technology room temperature increased significantly. Experiments show that polyurethane rigid foam technology used in building energy-saving design, not only reduces energy consumption, increase the indoor temperature, but also greatly reduce the residential area of ?? carbon dioxide emissions, to achieve the purpose of green energy-saving design.