气凝胶玻璃的气候适用性分析

建立了气凝胶玻璃的光学模型与动态传热模型并进行了实验验证.根据已有理论方法建立了其他5种对比玻璃的模型,分别是:双层中空玻璃模型、三层中空玻璃模型、高透型Low-E中空玻璃模型、双银型Low-E中空玻璃模型和遮阳型Low-E中空玻璃模型.提出利用太阳能效用量指标来评价玻璃的全年适用性,并借助累计逐时得热量指标来评价玻璃在供暖期或空调期的适用性.结果表明:气凝胶玻璃在严寒地区(哈尔滨)、寒冷地区(北京)、夏热冬冷地区(长沙)、温和地区(昆明)均具有一定的节能潜力,气凝胶玻璃的太阳能效用量分别高出双层中空玻璃266.3、158.6、114.3、40.5 kWh/m~2(水平面),气凝胶玻璃的气候适用性序列为哈尔滨北京长沙昆明.

Analysis on Suitability of Employing Aerogel Glazing System in Different Climate Zones

The optical and dynamic heat-transfer models of aerogel glazing system were developed and validated by experiments. The models of other five common glazing systems (including double, triple and 3 kinds of Low-E double glazing systems) were also built based on the existing methods. The index of efficient solar energy was introduced to evaluate glazing''s annual suitability, while the index of accumulative hourly heat gain was used to evaluate the glazing systems'' suitability in the heating or the cooling season alone. The simulation results show that employing aerogel glazing system in severe cold region (Harbin), cold region (Beijing), hot-summer cold-winter region (Changsha) and temperate region (Kunming) can achieve energy efficiency. The differences of the efficient solar energy between aerogel and double glazing systems in these cities are 266.3, 158.6, 114.3 and 40.5 kWh/m2, respectively. The order of suitable level for employing aerogel glazing system is as follow: Harbin> Beijing> Changsha> Kunming.