| 摘要: |
| 在夏热冬暖和夏热冬冷2个典型气候区,对关键材料聚氨酯板和真空绝热板进行多场耦合下的热工性能演变试验,在探究关键材料老化机制的同时,采用COMSOL仿真模拟辅助技术,来提高屋面系统部品的保温隔热性能.试验表明：夏热冬冷气候区冻融循环对聚氨酯板绝热性能的破坏程度大于夏热冬暖气候区下湿热老化的侵蚀程度;大部品构件方式为屋面隔热系统中的最佳拼接形式;通过聚氨酯板和真空绝热板的复合优化使得部品综合传热系数降为0137W/(m2·K),使用保温级别更高的关键材料后,部品传热系数可降至0065W/(m2·K). |
| 关键词: 屋面系统 多场耦合 典型气候区 仿真模拟 传热系数 |
| DOI：103969/j.issn.1007 9629201904016 |
| 分类号: |
| 基金项目:“十三五”国家重点研发项目(2016YFC0700807) |
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| Performance Evolution of Roof Insulation Materials and Optimization of Energy Saving |
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SUN Jie1, WANG Zhongping1, SHE Anming1, DING Yang1, TAN Yongqiang2
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1.School of Materials Science and Engineering, Tongji University, Shanghai 201804, China;2.Yuanda Kejian Technology Co., Ltd., Yueyang 414600, China
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| Abstract: |
| Thermal performance evolution test of the key material polyurethane board and vacuum insulation board under multi field coupling was carried out for two typical climatic zones: hot summer with warm winter and hot summer with cold winter. The aging mechanism of key materials was investigated and the thermal insulation performance of the roofing system parts was improved through COMSOL simulation. Through experiments, it is found that the effect of freeze thaw cycling on the adiabatic performance of polyurethane materials is greater than that of heat and humidity aging in hot summer and winter cold climates; the large part solution is the best splicing form in the roof insulation system; the optimized heat transfer of polyurethane board and vacuum insulation panels reduces the heat transfer coefficient of the part to 0137W/(m2·K), the key heat transfer coefficient of the parts is reduced to 0065W/(m2·K). |
| Key words: roofing system multi field coupling typical climate zone simulation heat transfer coefficient |
