有害物质环境测试组合舱的研制及性能评价

研制了一种新型有害物质环境测试组合舱,该测试舱由舱体系（内舱和外舱）、恒温恒湿空气处理系统、空气循环装置和信号控制与处理软件组成。该测试舱具有可分别使用内舱和外舱对样品进行测试的特点,并采用美国FLUNT公司开发的air pack软件包对内舱和外舱的气流进行模拟与计算,并划分出内舱的层流区域,同时也对舱体系的性能进行了测试与评价。结果表明,有害物质环境测试组合舱的温湿度的相对标准偏差分别为0.04℃和0.7%,混合性达到90.7%。因此,该有害物质环境测试组合舱对温湿度控制精准,气流稳定,混合性能良好,能为室内空气污染研究提供条件稳定的室内仿真环境。

Development and performance evaluation of an environmental testing combination of chamber

A novel assembly of environmental test chamber was developed for characterizing the emissions of harmful substances.The test chamber included the chamber system（inner chamber and outer chamber）,temperature and relative humidity control system,air cyclic equipment and the signal control soft.The sample could be tested by chamber system with inner and outer chamber respectively.We simulated and computed inner chamber＇s laminar flow areas with the U.S.FLUNT airpak software,and presented the test and performance evaluation results for the chamber system.The results showed that the relative standard deviation of temperature and relative humidity was 0.04℃ and 0.7%,respectively.The mixing level of the chamber system reached to 90.7%.The experimental results indicated the environmental test chamber has a good temperature and relative humidity accuracy,airflow stability and mixture function,and can provide a stable environmental condition for simulation indoor environment.