There are no ASHRAE/HVI standards for characterizing or specifying acceptable values of capture efficiency (CE) (i.e. percentage of cooking-contaminants captured/exhausted by a household rangehood). A test method, ASTM-E3087.18, was recently published describing a facility/procedure for attaining consistent CE measurements. This study presents the design, construction and operation of the first CE test-facility assembled from the ground-up following this ASTM standard. Aside from this facility, there is one other nonproprietary test-facility for standardized testing of rangehoods in accordance with ASTM-E3087.18, namely Lawrence Berkeley National Laboratory (LBNL) where a chamber was designed and built for the purpose of developing ASTM-E3087.18.

Additionally, several CE tests were performed using the described test-facility to compare results with previously published data. Similar to LBNL results, 93% of CE-tests had standard deviations less than 2.0% during a test, with non-conformances attributed to inadequate steady-state times prescribed by ASTM-E3087.18 and inlet design. Using the precision/bias procedure in ASTM-E3087.18, CE-uncertainties ranged from 0.7–3.3%, with 89% of tests having 2% uncertainty or less. A preliminary repeatability analysis showed 91% of cases repeated more than once were repeatable within 10% (i.e. ±5%) and 77% of cases repeatable within 6%(i.e. ±3%). Preliminary results showed CE increasing with flowrate, though uncertainty/repeatability appear unaffected by flowrate.

没有ASHRAE / HVI标准来表征或指定可接受的捕集效率（CE）值（即，家庭抽油烟机捕获/排出的烹饪污染物的百分比）。最近发布了一种测试方法ASTM-E3087.18，其中描述了用于获得一致的CE测量的设备/过程。这项研究介绍了遵循该ASTM标准从头开始组装的首个CE测试设备的设计，构造和操作。除此设施外，还有另一个用于按照ASTM-E3087.18标准对抽油烟机进行标准化测试的非专有测试设施，即劳伦斯伯克利国家实验室（LBNL），该实验室的设计和建造目的是为了开发ASTM-E3087 .18。

此外，使用上述测试工具进行了几次CE测试，以将结果与以前发布的数据进行比较。与LBNL结果相似，93％的CE测试在测试过程中的标准偏差小于2.0％，其中不合格归因于ASTM-E3087.18和进样口设计规定的稳态时间不足。使用ASTM-E3087.18中的精度/偏差程序，CE不确定度范围为0.7-3.3％，其中89％的测试不确定度为2％或更小。初步的可重复性分析显示，重复超过一次的案例中有91％的案例在10％（即±5％）之内可重复，而77％的案例在6％（即±3％）之内可重复。初步结果表明，CE随着流量的增加而增加，尽管不确定性/重复性似乎不受流量的影响。