气相空气滤清器用于去除空气中的各种污染物。然而，通常很难判断哪种空气滤清器适用于哪种污染物，而且很难确定哪种空气滤清器最适合特定应用。大多数气相空气滤清器使用吸附剂（如活性炭）去除空气中的污染物。由于吸附剂可去除的污染物各不相同，且空气清洁器包含不同配置的不同吸附剂，因此有测试数据来记录空气清洁器的性能至关重要。为了满足这一需求，ASHRAE发布了一个新的实验室测试标准，为暖通空调市场提供了第一个空气净化设备的气相测试标准。该方法为ASHRAE 145.2-2011《评估气相空气净化系统性能的实验室试验方法:空气净化装置》根据ASHRAE 145.2，针对三种不同的污染气体，对五种不同的空气滤清器进行了效率和容量测试。 选择的空气净化器涵盖了当前可用设备的各种功能，包括两个住宅单元和三个商业单元。所有的空气滤清器都是基于吸附剂的，但吸附剂的设计最适用于不同的污染物。选择了三种污染物，包括空气中不受欢迎的化合物，但通常在室内空气或进入建筑物的室外空气中发现。这些化合物还用于强调试验方法的能力以及不同类型空气滤清器之间的差异。为这些测试选择的化合物是甲苯、二氧化硫和臭氧。测试结果以对比表的形式呈现，并在适当的情况下以图形的形式呈现。这些结果包括低浓度“初始效率”、高浓度暴露的穿透曲线，以及五种空气滤清器对三种污染物的容量测量。引用:ASHRAE论文CD:2014 ASHRAE冬季会议，纽约

Gas-phase air cleaners are used to remove a wide variety of contaminants from the air. However, it is often difficult to judge which aircleaner works for which contaminants and, further, to determine which air cleaner is best for a given application. Most gas-phase air cleaners usesorbents (e.g., activated carbon) to remove the contaminants from the air. Since sorbents vary in which contaminants they can remove and aircleaners contain different sorbents in various configurations, it is critical to have test data to document the performance of air cleaners. To meet thisneed, ASHRAE has published a new laboratory test standard giving the HVAC market its first gas-phase test standard for air cleaningdevices. This method is ASHRAE 145.2-2011 "Laboratory Test Method for Assessing the Performance of Gas-Phase Air Cleaning Systems:Air Cleaning Devices."Five different air cleaners were tested for efficiency and capacity per ASHRAE 145.2 for three different contaminant gases. The aircleaners were chosen to cover a wide range of the capabilities of currently available devices and include two residential and three commercial units.All of the air cleaners are sorbent-based, but the sorbents are designed to apply best to different contaminants.Three contaminants were chosen to include compounds that are undesirable in air but are commonly found in indoor air or in outdoor airthat is entering buildings. These compounds also serve to highlight the capabilities of the test method and the differences across types of air cleaners.The compounds selected for these tests were toluene, sulfur dioxide, and ozone.The test results are presented in comparison tables and presented graphically where appropriate. These results include low concentration‘initial efficiencies,’ breakthrough curves for high concentration exposure, and capacity measurements for the five air cleaners for each of the threecontaminants.